CN103769291A - Method and device for controlling feeding concentration of ore grinder - Google Patents

Abstract

The invention discloses a method and a device for controlling feeding concentration of an ore grinder. The method comprises the following steps of obtaining a current sound grinding state value of the ore grinder, an oil pressure of a main shaft and an ore grinder power, and calculating a load parameter of the ore grinder according to the current sound grinding state value and the ore grinder power; determining the current oil pressure state and a load parameter state of the ore grinder according to an oil pressure numerical range of the oil pressure of the main shaft and a load numerical range of the ore grinder; reducing the feeding concentration of the ore grinder in response to a high oil pressure state and a high load parameter state that the ore grinder are simultaneously positioned currently; and increasing the feeding concentration of the ore grinder in response to a low oil pressure state and a low load parameter state that the ore grinder is simultaneously positioned currently. According to the technical scheme provided by the invention, when the load state of the ore grinder is high, the feeding concentration is reduced, the load of the ore grinder is reduced, and a mine material is fully smashed; when the load state of the ore grinder is low, the feeding concentration is improved, the efficiency of an ore grinding process is improved, and the energy consumption of the unit ton finished ore is reduced.

Description

The method and apparatus of a kind of ore mill feed ore concentration control

Technical field

The application relates to Process Control of Mineral Dressing field, particularly relates to the method and apparatus of a kind of ore mill feed ore concentration control.

Background technology

In the production process of ore smelting, the raw ore ore obtaining due to mining does not reach smelting requirements, needs first raw ore ore to be carried out to ore dressing, thereby obtains meeting the concentrate of smelting requirements, is used further to smelting process.The links such as ore-dressing practice mainly comprises crushing and screening, grind grading to raw ore ore, sorts, essence mine dehydration.Wherein, grinding process is that the ore grinding of fragmentation is arrived to suitable granularity, and the mineral of pulverizing are offered to the process of sorting.In grinding process, because ore is pulverized, effectively mineralogical composition can dissociate out from gangue, and different effective mineralogical compositions are dissociated mutually.Grinding operation is to provide the critical process that sorts raw material, to the control situation of grinding process, whether the granularity that directly has influence on ore milling product can be reached to suitable granularity, and then impact sorts the quality of process and dressing product.

Referring to Fig. 1, show the course of work of ore mill in a kind of grinding process.Mineral aggregate and water are thrown in to ore mill and are mixed respectively, export pump pond after the pulverizing through ore mill to again.Wherein, the live load of ore mill affects quality and the production efficiency of product in grinding operation process: load when too high when ore mill, it will be abundant not that ore mill is pulverized mineral aggregate, and the granularity of ore milling product is excessive, thereby makes product quality not reach requirement; Load when too low when ore mill, it is excessively slow that ore mill is processed the speed of mineral aggregate, thereby the production efficiency of ore milling product is reduced.Visible, be the key of whole grinding process control to the load control of ore mill.

In grinding process, the feed ore concentration of ore mill (throwing in mineral aggregate quantity and the ratio of throwing in mineral aggregate and water number amount summation to ore mill) is one of principal element affecting ore mill load.Usually, feed ore concentration improves, and ore mill load increases, and the speed of production of product is accelerated, and feed ore concentration reduces, and ore mill load reduces, and the speed of production of product slows down.But in the prior art, the control procedure of ore mill load is not but regulated to the control of feed ore concentration, but in whole grinding process, adopt changeless feed ore concentration, the feed ore concentration that this is fixing and ore mill normal duty state adapt.Because the feed ore concentration of ore mill can not correspondingly change according to the load height of ore mill, in the time that the load condition of ore mill does not belong to normal, the feed ore concentration of ore mill just can not adapt to the load condition of ore mill; In the time that the load condition of ore mill is higher, the lump ore of grinding machine inside and the throwing of steel ball are pounded and are ground abundant not, and the grinding efficiency of grinding machine does not reach requirement, and in the time that the load condition of ore mill is on the low side, the processing speed of raw ore will decline, and the ore handling capacity of grinding machine reduces.

Summary of the invention

The application's technical problem to be solved is, the method and apparatus of a kind of ore mill feed ore concentration control is provided, departs from grinding efficiency when normal and do not reach and require and technical problem that ore handling capacity reduces to solve the ore mill load condition causing according to the changeless feed ore concentration of available technology adopting.

For solving the problems of the technologies described above, the embodiment of the present application provides the method for a kind of ore mill feed ore concentration control, and the method comprises:

Obtain ore mill current mill sound state value, main shaft oil pressure and mill power, and calculate mill load parameter according to described mill sound state value and mill power;

According to the load value scope under the oil pressure number range under described main shaft oil pressure and described mill load parameter, determine oil pressure state and load parameter state that described ore mill is current, wherein, if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, the current underload parameter state that belongs to of described ore mill, if described mill load parameter is more than or equal to the second load parameter threshold value, the current high load capacity parameter state that belongs to of described ore mill, wherein, described the second oil pressure threshold value is greater than described the first oil pressure threshold value, described the second load parameter threshold value is greater than described the first load parameter threshold value,

In high oil pressure state and high load capacity parameter state, reduce the feed ore concentration of described ore mill in response to the current while of described ore mill;

In low oil pressure state and underload parameter state, increase the feed ore concentration of described ore mill in response to the current while of described ore mill.

Optionally, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and is greater than the 3rd load parameter threshold value, described ore mill is current in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and is more than or equal to the second load parameter threshold value, described ore mill is current in the first high load capacity parameter state; Wherein, described the 3rd load parameter threshold value is less than described the first load parameter threshold value, and described the 4th load parameter threshold value is greater than described the second load parameter threshold value;

Described method also comprises:

In reasonable oil pressure state and the first high load capacity parameter state, reduce the feed ore concentration of described ore mill in response to the current while of described ore mill;

In reasonable oil pressure state and the first underload parameter state, increase the feed ore concentration of described ore mill in response to the current while of described ore mill.

Optionally, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than the second load parameter threshold value and is greater than the first load parameter threshold value, described ore mill is current in Reasonable load parameter state;

Described method also comprises:

Current in higher load condition in response to described ore mill, reduce the mine-supplying quantity of described ore mill; Described higher load condition is: the current while of described ore mill is in high oil pressure state and high load capacity parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and high load capacity parameter state in high oil pressure state and Reasonable load parameter state;

Current in low load condition in response to described ore mill, increase the mine-supplying quantity of described ore mill; Described low load condition is: the current while of described ore mill is in low oil pressure state and underload parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and underload parameter state in low oil pressure state and Reasonable load parameter state.

Optionally, also comprise:

In response to ore mill, in abnormal load state, the mine-supplying quantity that maintains described ore mill is constant; Described abnormal load state comprises: the current while of described ore mill is in high oil pressure state and underload parameter state, and the current while of described ore mill is in low oil pressure state and high load capacity parameter state.

Optionally, described foundation described mill sound state value and mill power calculate mill load parameter, comprising:

Calculate the power proportions that described mill sound state value accounts for the mill signal to noise ratio example of maximum mill sound state value and described mill power and account for maximum mill power;

According to described mill signal to noise ratio example and described power proportions are weighted to average result, obtain described mill load parameter.

Optionally, described basis is weighted average result to described mill signal to noise ratio example and described power proportions, obtains described mill load parameter, comprising:

According to the coefficient of reliability of ore mill detection signal, described mill signal to noise ratio example and described power proportions are weighted on average, obtain result of weighted average;

With the first correction factor of presetting, described result of weighted average is revised, obtained described mill load parameter.

Optionally, described in obtain the current mill sound state value of ore mill, comprising:

By the mill sound detect of described ore mill being obtained to the signal of telecommunication of described mill sound detect;

Account for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determine the mill sound state value that described ore mill is current;

Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is the poor of described signal higher limit and the signal value of rolling off the production line, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect.

Optionally, the described signal proportion that accounts for described signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determines the mill sound state value that described ore mill is current, specifically comprises:

Calculate the signal proportion that difference between described signal higher limit and the current value of the described signal of telecommunication accounts for described signal spacing width;

With the second corrected parameter of presetting, described signal proportion is revised, obtained the current mill sound state value of described ore mill.

In addition, the application also provides the device of a kind of ore mill feed ore concentration control, comprising:

Acquisition module, for obtaining ore mill current mill sound state value, main shaft oil pressure and mill power;

Parameter calculating module, for calculating mill load parameter according to described mill sound state value and mill power;

State determination module, for according to the load value scope under the oil pressure number range under described main shaft oil pressure and described mill load parameter, determines oil pressure state and load parameter state that described ore mill is current, wherein, if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, the current underload parameter state that belongs to of described ore mill, if described mill load parameter is more than or equal to the second load parameter threshold value, the current high load capacity parameter state that belongs to of described ore mill, wherein, described the second oil pressure threshold value is greater than described the first oil pressure threshold value, described the second load parameter threshold value is greater than described the first load parameter threshold value,

The first concentration reduces module, in response to the current while of described ore mill in high oil pressure state and high load capacity parameter state, reduce the feed ore concentration of described ore mill;

First concentration increase module, in response to the current while of described ore mill in low oil pressure state and underload parameter state, increase the feed ore concentration of described ore mill.

Optionally, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and is greater than the 3rd load parameter threshold value, described ore mill is current in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and is more than or equal to the second load parameter threshold value, described ore mill is current in the first high load capacity parameter state; Wherein, described the 3rd load parameter threshold value is less than described the first load parameter threshold value, and described the 4th load parameter threshold value is greater than described the second load parameter threshold value;

Described device also comprises:

The second concentration reduces module, in response to the current while of described ore mill in reasonable oil pressure state and the first high load capacity parameter state, reduce the feed ore concentration of described ore mill;

Second concentration increase module, in response to the current while of described ore mill in reasonable oil pressure state and the first underload parameter state, increase the feed ore concentration of described ore mill.

Optionally, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than the second load parameter threshold value and is greater than the first load parameter threshold value, described ore mill is current in Reasonable load parameter state;

Described device also comprises:

Subtract ore deposit module, for current in higher load condition in response to described ore mill, reduce the mine-supplying quantity of described ore mill; Described higher load condition is: the current while of described ore mill is in high oil pressure state and high load capacity parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and high load capacity parameter state in high oil pressure state and Reasonable load parameter state;

Increase ore deposit module, for current in low load condition in response to described ore mill, increase the mine-supplying quantity of described ore mill; Described low load condition is: the current while of described ore mill is in low oil pressure state and underload parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and underload parameter state in low oil pressure state and Reasonable load parameter state.

Optionally, also comprise:

Maintain module, in response to ore mill in abnormal load state, the mine-supplying quantity that maintains described ore mill is constant; Described abnormal load state comprises: the current while of described ore mill is in high oil pressure state and underload parameter state, and the current while of described ore mill is in low oil pressure state and high load capacity parameter state.

Optionally, described parameter calculating module comprises:

Accounting calculating sub module, accounts for the mill signal to noise ratio example of maximum mill sound state value and described mill power and accounts for the power proportions of maximum mill power for calculating described mill sound state value;

Parameter is determined submodule, for according to described mill signal to noise ratio example and described power proportions are weighted to average result, obtains described mill load parameter.

Optionally, described parameter determines that submodule comprises:

Weighted average submodule, for according to the coefficient of reliability of ore mill detection signal, described mill signal to noise ratio example and described power proportions being weighted on average, obtains result of weighted average;

First revises submodule, for described result of weighted average being revised with the first correction factor of presetting, obtains described mill load parameter.

Optionally, described acquisition module comprises:

Signal detection submodule, for by the signal of telecommunication that the mill sound detect of described ore mill is obtained to described mill sound detect;

Mill sound is determined submodule, for account for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determines the mill sound state value that described ore mill is current; Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is the poor of described signal higher limit and the signal value of rolling off the production line, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect;

Oil pressure obtains submodule, for obtaining the current main shaft oil pressure of ore mill;

Power obtains submodule, for obtaining the current mill power of ore mill.

Optionally, the sound that grinds determines that submodule comprises:

Signal proportion submodule, accounts for the signal proportion of described signal spacing width for calculating difference between described signal higher limit and the current value of the described signal of telecommunication;

Second revises submodule, for described signal proportion being revised with the second corrected parameter of presetting, obtains the current mill sound state value of described ore mill.

Compared with prior art, the application has the following advantages:

The technical scheme of the embodiment of the present application, according to the main shaft oil pressure of ore mill, mill power and mill sound state value three comprehensively carry out to determine the load condition of ore mill, wherein, main shaft oil pressure for determine ore mill current in oil pressure state, the mill load parameter of mill power and the matching of mill sound state value for determine ore mill current in load parameter state, reduce feed ore concentration during in high oil pressure state and high load capacity parameter state in the current while of ore mill, increase feed ore concentration during in low oil pressure state and underload parameter state in the current while of ore mill.By the technical scheme of the embodiment of the present application, can realize, in the time that ore mill load condition is higher, reduce feed ore concentration, more abundant to reduce the load of ore mill and to make the throwing of raw ore lump ore and steel ball pound attrition process, thereby make the grinding efficiency of grinding machine reach requirement, in the time that ore mill load condition is on the low side, increase feed ore concentration, to improve the load of ore mill and to improve the ore handling capacity of grinding machine, thereby improve output and the efficiency of grinding process, reduce the energy consumption of unit ton concentrate.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the course of work schematic diagram of ore mill in grinding process;

Fig. 2 is the basic flow sheet of the embodiment of the method 1 of ore mill feed ore concentration control in the application;

Fig. 3 is the flow chart that obtains mill sound state value one embodiment in the embodiment of the present application;

Fig. 4 is the flow chart that calculates mill sound load parameter one embodiment in the embodiment of the present application;

Fig. 5 is the basic flow sheet of the embodiment of the method 2 of ore mill feed ore concentration control in the application;

Fig. 6 is the basic flow sheet of the embodiment of the method 3 of ore mill feed ore concentration control in the application;

Fig. 7 is the structure chart of the device embodiment 1 of ore mill feed ore concentration control in the application;

Fig. 8 is the structure chart of the device embodiment 2 of ore mill feed ore concentration control in the application;

Fig. 9 is the structure chart of the device embodiment 3 of ore mill feed ore concentration control in the application;

Figure 10 is the structure chart of the device embodiment 4 of ore mill feed ore concentration control in the application;

Figure 11 is the structure chart of a kind of parameter calculating module 702 embodiments in the embodiment of the present application;

Figure 12 is the structure chart that in the embodiment of the present application, a kind of parameter is determined submodule 1102 embodiments;

Figure 13 is the structure chart of a kind of acquisition module 701 embodiments in the embodiment of the present application;

Figure 14 is a kind of structure chart that grinds sound and determine submodule 1302 embodiments in the embodiment of the present application.

The specific embodiment

In order to make those skilled in the art person understand better the application's scheme, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Based on the embodiment in the application, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the application's protection.

Inventor finds through research, for a long time, ore mill load of the prior art is controlled, what adopt is all that the major influence factors of loading based on ore mill is mine-supplying quantity (throwing in the mineral aggregate quantity to ore mill) this point consideration of ore mill, realizes by the adjusting control to ore mill mine-supplying quantity.But uncared-for, in fact except mine-supplying quantity, the feed ore concentration of ore mill is also one of major influence factors of ore mill load, also can realize the ore mill control of loading by the adjusting control to feed ore concentration.

Based on above-mentioned analysis and research, the application's basic thought is: the main shaft oil pressure current according to ore mill, mill power and mill sound state value three comprehensively carry out to determine the load condition of ore mill, wherein, main shaft oil pressure for determine ore mill current in oil pressure state, the mill load parameter of mill power and the matching of mill sound state value for determine ore mill current in load parameter state, reduce feed ore concentration during in high oil pressure state and high power state in the current while of ore mill, improve feed ore concentration during in low oil pressure state and low power state in the current while of ore mill.So just can realize, in the time that ore mill load condition is higher, reduce feed ore concentration, more abundant to reduce the load of ore mill and to make the throwing of raw ore lump ore and steel ball pound attrition process, thereby make the grinding efficiency of grinding machine reach requirement, in the time that ore mill load condition is on the low side, increase feed ore concentration, to improve the load of ore mill and to improve the ore handling capacity of grinding machine, thereby improve output and the efficiency of grinding process, reduce the energy consumption of unit ton concentrate.

It should be noted that, related noun " ore mill " herein, expression be the grinding attachment using in the grinding process of ore-dressing technique, also can be described as " grinding machine ".Wherein, the technical scheme of the embodiment of the present application is applicable to multiple different grinding attachment, for example ball mill or semi-autogenous mill.

After having introduced the application's basic thought, below in conjunction with accompanying drawing, describe the specific implementation of the method and apparatus of the application's ore mill feed ore concentration control in detail by embodiment.

Referring to Fig. 2, show the basic flow sheet of the embodiment of the method 2 of ore mill feed ore concentration control in the application.In the present embodiment, described method for example can comprise the following steps:

S201, obtain ore mill current mill sound state value, main shaft oil pressure and mill power, and calculate mill load parameter according to described mill sound state value and mill power.

In the present embodiment, the mill sound that mill sound state value is detected by ore mill calculates and draws.For example particularly, a kind of obtain manner that grinds sound state value, can as shown in Figure 3, be completed by following steps:

S301, by the mill sound detect of described ore mill being obtained to the signal of telecommunication of described mill sound detect.

S302, account for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determine the mill sound state value that described ore mill is current.

Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is the poor of described signal higher limit and the signal value of rolling off the production line, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect.For example, usually, the current value of the mill sound signal of telecommunication detecting is all in the scope of 4～20 milliamperes, the current value of the maximum signal of telecommunication is 20 milliamperes, and the current value of the minimum signal of telecommunication is 4 milliamperes, and signal higher limit is 20, signal lower limit is 4, and now signal spacing width is 16.

When determine mill sound state value according to aforementioned proportion, a kind of mode is can be directly using aforementioned proportion as mill sound state value.But the mill sound of ore mill is interfered sometimes, the quiescent current value that detection mill sound obtains has deviation, even can exceed signal higher limit or not reach signal lower limit.The impact avoiding interference for the mill sound state value that makes to determine, the another kind of mode of determining mill sound state value can be first to calculate difference between described signal higher limit and the current value of the described signal of telecommunication and account for the signal proportion of described signal spacing width, with the second corrected parameter of presetting, described signal proportion is revised again, obtained the current mill sound state value of described ore mill.Like this, utilize the second corrected parameter to revise aforementioned proportion, thereby can alleviate the impact of interference.Particularly, for example can adopt following formula to calculate mill sound state value:

$\mathrm{YI}=100\×\frac{(X_{\max }-X)}{X_{\max -\min }}+{\mathrm{KD}}_2;$

Wherein, YI is mill sound state value, and X is the current value that detects the signal of telecommunication that mill sound obtains, X _maxfor signal higher limit, X _max-minfor signal spacing width, KD ₂be the second corrected parameter, wherein, KD ₂it can be the constant setting in advance.

Then return to Fig. 2.

In the present embodiment, mill load parameter be calculate according to mill sound state value and the common matching of mill power one for judging the parameter of mill load state.For example, a kind of account form of mill load parameter, can as shown in Figure 4, be completed by following steps:

S401, calculate described mill sound state value and account for the mill signal to noise ratio example of maximum mill sound state value and described mill power and account for the power proportions of maximum mill power;

S402, basis are weighted average result to described mill signal to noise ratio example and described power proportions, obtain described mill load parameter.

Wherein, if mill sound state value is to calculate in the mode shown in aforementioned Fig. 3, in fact grind a very ratio of sound state value, maximum mill sound state value is 1.Also, described mill sound state value accounts for the mill signal to noise ratio example of maximum mill sound state value, is in fact described mill sound state value.Therefore,, in present embodiment, also can directly adopt mill sound state value to perform step S402 as mill signal to noise ratio example.

For the mode of determining mill load parameter according to average weighted result, a kind of mode can be that mill signal to noise ratio example and power proportions are done to weighted average with identical weight.But the mill sound of ore mill is interfered sometimes, the quiescent current value that detection mill sound obtains has deviation, the reliability standard of mill sound state value is different, so, another kind of can mode be to adopt default coefficient of reliability to distinguish the weight of mill signal to noise ratio example and power proportions, and then with different weights, mill signal to noise ratio example and power proportions is weighted on average.In addition, even if adopted coefficient of reliability, still may there is detection error in grinding machine state value and mill sound power, and in order to eliminate this error, another mode can be first according to the coefficient of reliability of ore mill detection signal, described mill signal to noise ratio example and described power proportions to be weighted on average, obtain result of weighted average, then with the first correction factor of presetting, described result of weighted average is revised, obtain described mill load parameter.Like this, utilize the first corrected parameter to revise aforementioned proportion, thus the impact that can alleviate error.Particularly, for example can adopt following formula to calculate mill load parameter:

$\mathrm{FH}=\frac{\mathrm{JI}}{{\mathrm{JI}}_{\max }}\×a+\mathrm{YI}\×(1-a)+{\mathrm{KD}}_1;$

Wherein, FH is mill load parameter, and JI is mill power, JI _maxfor maximum mill power, YI is mill sound state value, and a is default coefficient of reliability, and KD1 is the first corrected parameter, and wherein, the preferred span of a is 0.4～0.6, and KD1 can be the constant setting in advance.

Then return to Fig. 2.After S201 is finished, then carry out S202.

S202, according to the load value scope under the oil pressure number range under described main shaft oil pressure and described mill load parameter, determine oil pressure state and load parameter state that described ore mill is current.

Particularly, definite mode of oil pressure state and load parameter state can be for example: if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, the current underload parameter state that belongs to of described ore mill, if described mill load parameter is more than or equal to the second load parameter threshold value, the current high load capacity parameter state that belongs to of described ore mill, wherein, described the second oil pressure threshold value is greater than described the first oil pressure threshold value, described the second load parameter threshold value is greater than described the first load parameter threshold value.

It should be noted that, the first oil pressure threshold value and the second oil pressure threshold value can be set according to the maximum oil pressure of ore mill, and for example, 95%, the second oil pressure threshold value that the first oil pressure threshold value can be pressed for maximum oil can be 85% of maximum oil pressure; Similarly, the first load parameter threshold value and the second load parameter threshold value can be to set according to the maximum mill load parameter of ore mill, for example, the first load parameter threshold value can be that 80%, the second load parameter threshold value of maximum mill load parameter can be 90% of maximum mill load parameter.

S203, in response to the current while of described ore mill in high oil pressure state and high load capacity parameter state, reduce the feed ore concentration of described ore mill.

Wherein, the mode reducing can be current feed ore concentration to be deducted to a fixing regulated value again obtain current feed ore concentration.

S204, in response to the current while of described ore mill in low oil pressure state and underload parameter state, increase the feed ore concentration of described ore mill.

Wherein, the mode of increase can be that current feed ore concentration is added to a fixing regulated value obtains current feed ore concentration again.

It should be noted that, determine that from the mill sound by ore mill in prior art (ore mill produce noise) mode of load condition is different, what in the present embodiment, adopt is the load condition that main shaft oil pressure, mill power and the mill sound state value three of ore mill comprehensively carrys out to determine ore mill.This on the one hand, mainly because prior art is for mine-supplying quantity is controlled, and corresponding relation between corresponding relation and mine-supplying quantity and load condition between feed ore concentration and load condition is different, between ore mill feed ore concentration and mill sound, almost there is no correlation, when feed ore concentration changes, the mill sound of ore mill does not almost change; On the other hand, be because the interference that mill sound can be subject to outer work condition is fluctuateed, can not reflect exactly the load condition of ore mill.

Be understandable that, in order to make feed ore concentration control sensitiveer, can also ore mill current neither simultaneously in high oil pressure state and high load capacity parameter state, when also different in low oil pressure state and underload parameter state in the situation that, oil pressure state and load parameter state are done to further identification, thereby determine whether to regulate feed ore concentration.For example, comprise high oil pressure state except aforementioned, low oil pressure state, outside definite mode of high load capacity parameter state and underload parameter, definite mode of oil pressure state and load parameter state can also comprise: if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and is greater than the 3rd load parameter threshold value, described ore mill is current in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and is more than or equal to the second load parameter threshold value, described ore mill is current in the first high load capacity parameter state, wherein, described the 3rd load parameter threshold value is less than described the first load parameter threshold value, and described the 4th load parameter threshold value is greater than described the second load parameter threshold value.Now, after S202, can also comprise: in reasonable oil pressure state and the first high load capacity parameter state, reduce the feed ore concentration of described ore mill in response to the current while of described ore mill; In reasonable oil pressure state and the first underload parameter state, increase the feed ore concentration of described ore mill in response to the current while of described ore mill.Wherein, identical with the second load parameter threshold value with the first load parameter threshold value is, the 3rd load parameter threshold value and the 4th load parameter threshold value can be also to set according to the maximum mill load parameter of ore mill, for example, suppose the first load parameter threshold value be maximum mill load parameter 80% and the second load parameter threshold value is 90% of maximum mill load parameter, the 3rd load parameter threshold value can be that 70%, the four load parameter threshold value of maximum mill load parameter can be 90% of maximum mill load parameter.

In the present embodiment, for fear of feed ore concentration is excessively regulated, can also S203 or S204 complete after, the feed ore concentration that exceedes the upper limit or do not reach lower limit is adjusted.Particularly, after S202 is complete, or S203 complete after, the corresponding relation of feed ore concentration that can also more described ore mill and upper limit of concentration value, concentration limit value; Be greater than described upper limit of concentration value in response to described feed ore concentration, described feed ore concentration is adjusted to described upper limit of concentration value; Be less than described concentration limit value in response to described feed ore concentration, described feed ore concentration is adjusted to described concentration limit value.Wherein, described upper limit of concentration value is greater than described concentration limit value.This upper limit of concentration value and concentration limit value can arrange according to concrete operating mode, and for example, upper limit of concentration value can be set as 85%, and concentration limit value can be set as 75%.

By the technical scheme of the present embodiment, in the time that ore mill load condition is higher, reduce feed ore concentration, more abundant to reduce the load of ore mill and to make the throwing of raw ore lump ore and steel ball pound attrition process, thereby make the grinding efficiency of grinding machine reach requirement, in the time that ore mill load condition is on the low side, increase feed ore concentration, to improve the load of ore mill and to improve the ore handling capacity of grinding machine, thereby improve output and the efficiency of grinding process, reduce the energy consumption of unit ton concentrate.

Because the influence factor of ore mill load condition not only comprises feed ore concentration, also comprise mine-supplying quantity, so, when ore mill load condition is controlled, can be by regulate control to realize to feed ore concentration and mine-supplying quantity simultaneously simultaneously.

Referring to Fig. 5, show the basic flow sheet of the embodiment of the method 2 of ore mill feed ore concentration control in the application.In the present embodiment, described method for example can comprise the following steps:

S501, obtain ore mill current mill sound state value, main shaft oil pressure and mill power, and calculate mill load parameter according to described mill sound state value and mill power.

S502, according to the load value scope under the oil pressure number range under described main shaft oil pressure and described mill load parameter, determine oil pressure state and load parameter state that described ore mill is current.

Particularly, definite mode of oil pressure state and load parameter state can be for example: if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current in low oil pressure state, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current in high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, described ore mill is current in underload parameter state, if described mill load parameter is less than the second load parameter threshold value and is greater than the first load parameter threshold value, described ore mill is current in Reasonable load parameter state, if described mill load parameter is more than or equal to the second load parameter threshold value, described ore mill is current in high load capacity parameter state, wherein, described the second oil pressure threshold value is greater than described the first oil pressure threshold value, described the second load parameter threshold value is greater than described the first load parameter threshold value.

Be understandable that, after S502 is complete, need to determine that entering following which step continues to carry out according to the current oil pressure state of ore mill and load parameter state.Wherein, determine that the step that enters can be one while control, can be also two at every turn, for example, determining while entering S503 and can determine and enter S504 simultaneously, can determine and enter S506 simultaneously while entering S505 definite.

S503, in response to the current while of described ore mill in high oil pressure state and high load capacity parameter state, reduce the feed ore concentration of described ore mill.

S504, current in higher load condition in response to described ore mill, reduces the mine-supplying quantity of described ore mill.

Wherein, described higher load condition comprises following three kinds of situations:

(1) the current while of described ore mill is in high oil pressure state and high load capacity parameter state;

(2) the current while of described ore mill is in high oil pressure state and Reasonable load parameter state;

(3) the current while of described ore mill is in reasonable oil pressure state and high load capacity parameter state.

Be understandable that, described higher load condition comprises above three kinds of situations, refer to that above-mentioned three kinds of any one situations of situation can be referred to as higher load condition, as long as the main shaft oil pressure and the mill load parameter that are ore mill meet above-mentioned any one situation, just represent that ore mill is current in higher load condition.

It should be noted that, in the time of the adjusting control at every turn mine-supplying quantity being reduced, a kind of possible control mode can be to reduce mine-supplying quantity with fixed value, and before and after regulating, the difference (regulated quantity) of mine-supplying quantity is a fixed value.But in order to carry out more subtly mine-supplying quantity control, another kind of possible control mode can be to determine the regulated quantity of mine-supplying quantity in conjunction with the current concrete oil pressure state of ore mill and load parameter state, and before and after regulating, the difference of mine-supplying quantity is ground sound, main shaft oil pressure and mill power in conjunction with ore mill and comprehensively determined; Particularly, S504 for example can comprise: identify the current residing oil pressure state of described ore mill and load parameter state; In high oil pressure state and high load capacity parameter state, the mine-supplying quantity of described ore mill is reduced to the first regulated quantity in response to the current while of described ore mill; In high oil pressure state and Reasonable load parameter state, the mine-supplying quantity of described ore mill is reduced to the second regulated quantity in response to the current while of described ore mill; In reasonable oil pressure state and high load capacity parameter state, the mine-supplying quantity of described ore mill is reduced to the second regulated quantity in response to the current while of described ore mill.Wherein, described the second regulated quantity is less than described the first regulated quantity.Be understandable that, when the current while of ore mill is in high oil pressure state and high load capacity parameter state, also be that the oil pressure of ore mill and mill load parameter are when all high, illustrate that now the interior mineral aggregate of ore mill is too much, so it is larger with respect to the second regulated quantity adopting in other situations now to reduce the first regulated quantity that mine-supplying quantity adopts, so that mine-supplying quantity can be reduced rapidly, ore mill inner stuffing reduces rapidly.

S505, in response to the current while of described ore mill in low oil pressure state and underload parameter state, increase the feed ore concentration of described ore mill.

S506, current in low load condition in response to described ore mill, increases the mine-supplying quantity of described ore mill.

Wherein, described low load condition comprises following three kinds of situations:

(1) the current while of described ore mill is in low oil pressure state and underload parameter state;

(2) the current while of described ore mill is in low oil pressure state and Reasonable load parameter state;

(3) the current while of described ore mill is in reasonable oil pressure state and underload parameter state.

Be understandable that, described low load condition comprises above three kinds of situations, refer to that above-mentioned three kinds of any one situations of situation can be referred to as low load condition, as long as the main shaft oil pressure and the mill load parameter that are ore mill meet above-mentioned any one situation, just represent that ore mill is current in low load condition.

It should be noted that, in the time of the adjusting control at every turn mine-supplying quantity being increased, a kind of possible control mode can be to increase mine-supplying quantity with fixed value, and before and after regulating, the difference (regulated quantity) of mine-supplying quantity is a fixed value.But in order to carry out more subtly mine-supplying quantity control, another kind of possible control mode can be to determine the regulated quantity of mine-supplying quantity in conjunction with the current concrete oil pressure state of ore mill and load parameter state, and before and after regulating, the difference of mine-supplying quantity is ground sound, main shaft oil pressure and mill power in conjunction with ore mill and comprehensively determined; Particularly, S506 for example can comprise: identify the current residing oil pressure state of described ore mill and load parameter state; In low oil pressure state and underload parameter state, the mine-supplying quantity of described ore mill is increased to the 3rd regulated quantity in response to the current while of described ore mill; In low oil pressure state and Reasonable load parameter state, the mine-supplying quantity of described ore mill is increased to the 4th regulated quantity in response to the current while of described ore mill; In reasonable oil pressure state and underload parameter state, the mine-supplying quantity of described ore mill is increased to the 4th regulated quantity in response to the current while of described ore mill.Wherein, described the 4th regulated quantity is less than described the 3rd regulated quantity.Be understandable that, when the current while of ore mill is in low oil pressure state and underload parameter state, also be that the oil pressure of ore mill and mill load parameter are when all high, illustrate that now the interior mineral aggregate of ore mill is very few, so it is larger with respect to the 4th regulated quantity adopting in other situations now to increase the 3rd regulated quantity that mine-supplying quantity adopts, so that mine-supplying quantity can be increased rapidly, ore mill inner stuffing increases sharply.In addition, will also be appreciated that the 3rd regulated quantity and aforementioned the first regulated quantity can be to adopt same numerical value, similarly, the 4th regulated quantity can be also to adopt same numerical value with aforementioned the second regulated quantity.Certainly, above four regulated quantitys also can adopt different numerical value, for example, specifically can set according to actual condition.

In the present embodiment, in the time that mine-supplying quantity is regulated, the mode of determining ore mill load condition is equally also comprehensively to determine according to the main shaft oil pressure of ore mill, mill power and mill sound three, and as in prior art, is not the load condition of only determining ore mill according to mill sound.The noise that can avoid like this ore mill in actual production complicated and changeable be subject to many-sided interference and the load condition that causes judge inaccurate, thereby make the mine-supplying quantity control of ore mill more accurate.

In the actual moving process of ore mill, ore mill sometimes neither in higher load condition also not in low load condition, but be in abnormal conditions, now, in the present embodiment, can also determine how the mine-supplying quantity of ore mill is controlled further combined with the mill sound situation of ore mill, for example particularly, on the process base shown in Fig. 5, the present embodiment can also further comprise after S502: in response to ore mill, in abnormal load state, the mine-supplying quantity that maintains described ore mill is constant.Like this, under abnormal conditions, ore mill keeps mine-supplying quantity constant, waits for that oil pressure state and the load parameter state of ore mill further changes, until meet higher load condition or low load condition enters S504 again or S506 regulates mine-supplying quantity.

Wherein, described abnormal load state comprises following two kinds of situations:

(1) the current while of described ore mill is in high oil pressure state and underload parameter state;

(2) the current while of described ore mill is in low oil pressure state and high load capacity parameter state.

Be understandable that, described abnormal load state comprises above two kinds of situations, refer to that any one situation of above-mentioned two situations can be referred to as abnormal load state, as long as the main shaft oil pressure and the mill load parameter that are ore mill meet above-mentioned any one situation, just represent that ore mill is current in abnormal load state.

In addition, for fear of the excessive adjusting of mine-supplying quantity, S504 or S506 complete after, can also further judge whether the mine-supplying quantity of described ore mill exceedes default mine-supplying quantity higher limit, if so, the mine-supplying quantity of described ore mill is adjusted to described mine-supplying quantity higher limit.Wherein, mine-supplying quantity higher limit can be a constant of presetting, as being preferably 360 tons/hour.

By the technical scheme of the present embodiment, comprehensively carry out to determine the load condition of ore mill according to the main shaft oil pressure of ore mill, mill power and mill sound three, and come mine-supplying quantity and feed ore concentration to be regulated to control according to definite load condition, thereby realized, ore mill load is adjusted more accurately and rapidly. simultaneously

In order to make technical scheme that those skilled in the art the are well understood to the application more application mode in actual scene, below will be take an application scenarios as example, introduce in detail a kind of embodiment of the application in practical application.But the embodiment that it should be noted that this application scenarios is only spirit for the ease of understanding the application and principle and illustrate, the application's embodiment is unrestricted in this regard.On the contrary, the application's embodiment can be applied to applicable any scene.

This application scene adopts, the combination of main shaft oil pressure, mill power and mill sound state value three based on ore mill, consider determine ore mill current in load condition, and then the regulative mode of definite feed ore concentration and mine-supplying quantity.Particularly, referring to Fig. 6, show the flow chart of the embodiment of the method 3 of ore mill feed ore concentration control in the application.In the present embodiment, can comprise the following steps:

S601, detect the signal of telecommunication of the current main shaft oil pressure of ore mill, mill power and mill sound and preserve.

In the present embodiment, can and control parameter by main detected parameters and preserve, to can check when equipment is overhauled later.The parameter of preserving, for example can comprise the mill sound state value calculating in main shaft oil pressure, mill power and the subsequent step in each control moment, current mine-supplying quantity, current amount of water etc., the quantity that each parameter is preserved can be all data in a nearest Preset Time section, for example supplemental characteristic in nearest 3 months.

S602, according to mill sound the signal of telecommunication calculate current mill sound state value and preserve.

Particularly, can calculate by following formula:

$\mathrm{YI}=100\×\frac{(20-X)}{16}+\mathrm{KD};$

Wherein, YI is mill sound state value, and X is the current value that detects the signal of telecommunication that mill sound obtains, and KD is default corrected parameter.

S603, calculate mill sound load parameter according to the current mill power of ore mill and mill sound state value.

Particularly, can calculate by following formula:

$\mathrm{FH}=\frac{\mathrm{JI}}{{\mathrm{JI}}_{\max }}\×a+\mathrm{YI}\×(1-a)+{\mathrm{KD}}_1;$

Wherein, JI is mill power, JI _maxfor maximum mill power, YI is mill sound state value, and a is default coefficient of reliability, KD ₁it is the first corrected parameter.

S604, according to the number range under current main shaft oil pressure and mill load parameter, determine ore mill current in oil pressure state and load parameter state.

Particularly, can determine each state according to table 1:

Table 1

In table 1, the first oil pressure threshold value can be 85% of maximum oil pressure, the second oil pressure threshold value can be 95% of maximum oil pressure, the first load parameter threshold value can be 80% of maximum mill load parameter, the second load parameter threshold value can be 90% of maximum mill load parameter, the 3rd load parameter threshold value can be that 70%, the four load parameter threshold value of maximum mill load parameter can be 95% of maximum mill load parameter.Wherein, the first high load capacity parameter state and the second high load capacity parameter state belong to the high load capacity parameter state described in previous embodiment, and the first underload parameter state and the second underload parameter state belong to the underload parameter state described in previous embodiment.

S605, according to the current oil pressure state of ore mill and load parameter state, determine the current load condition of ore mill and determine the regulative mode of feed ore concentration, mine-supplying quantity.

Particularly, can determine with reference to table 2:

Table 2

In table 2, the first regulated quantity is greater than the second regulated quantity.It should be noted that, in table 2, load condition and feed ore concentration, mine-supplying quantity regulative mode are to determine on the basis of preceding method embodiment 1 and embodiment of the method 2, but easy and clear for what describe in the present embodiment, with form statement, therefore the definite mode in table 2 is the basic thought that meets the application who introduces in aforementioned each embodiment.

S606, judge regulate after ore mill feed ore concentration, mine-supplying quantity whether belong to corresponding limits, if not, enter S607, if so, directly enter S608.

Wherein, for ore mill feed ore concentration, be to judge whether feed ore concentration is less than or equal to upper limit of concentration value and is more than or equal to concentration limit value; For ore mill mine-supplying quantity, be to judge whether feed ore concentration exceedes mine-supplying quantity higher limit.

S607, using described corresponding limit value value as regulate after ore mill feed ore concentration and/or mine-supplying quantity, enter S608.

Particularly, in the time that ore mill feed ore concentration is greater than upper limit of concentration value, the feed ore concentration using upper limit of concentration value after regulating; In the time that ore mill feed ore concentration is less than concentration limit value, the feed ore concentration using concentration limit value after regulating; In the time that ore mill mine-supplying quantity is greater than mine-supplying quantity higher limit, the mine-supplying quantity using mine-supplying quantity higher limit after regulating.

S608, according to ore mill feed ore concentration and mine-supplying quantity after regulating, adjust the vibration frequency of ore grinding storehouse vibrofeeder and the amount of water of ore mill make-up water pump, so that actual feed ore concentration, mine-supplying quantity are controlled.

By the technical scheme of the present embodiment, main shaft oil pressure, mill power and three based on ore mill grinds the combination of sound state value, consider determine ore mill current in load condition, and then the control mode of definite feed ore concentration, mine-supplying quantity, thereby realized, ore mill load is adjusted more accurately and rapidly.

Corresponding to method, the application also provides the device of a kind of ore mill feed ore concentration control.

Referring to Fig. 7, show the structure chart of the device embodiment 1 of ore mill feed ore concentration control in the application.In the present embodiment, described device can comprise:

Acquisition module 701, for obtaining ore mill current mill sound state value, main shaft oil pressure and mill power;

Parameter calculating module 702, for calculating mill load parameter according to described mill sound state value and mill power;

State determination module 703, for according to the load value scope under the oil pressure number range under described main shaft oil pressure and described mill load parameter, determines oil pressure state and load parameter state that described ore mill is current, wherein, if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, the current underload parameter state that belongs to of described ore mill, if described mill load parameter is more than or equal to the second load parameter threshold value, the current high load capacity parameter state that belongs to of described ore mill, wherein, described the second oil pressure threshold value is greater than described the first oil pressure threshold value, described the second load parameter threshold value is greater than described the first load parameter threshold value,

The first concentration reduces module 704, in response to the current while of described ore mill in high oil pressure state and high load capacity parameter state, reduce the feed ore concentration of described ore mill;

First concentration increase module 705, in response to the current while of described ore mill in low oil pressure state and underload parameter state, increase the feed ore concentration of described ore mill.

Referring to Fig. 8, show the structure chart of the device embodiment 2 of ore mill feed ore concentration control in the application.In the present embodiment, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and is greater than the 3rd load parameter threshold value, described ore mill is current in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and is more than or equal to the second load parameter threshold value, described ore mill is current in the first high load capacity parameter state; Wherein, described the 3rd load parameter threshold value is less than described the first load parameter threshold value, and described the 4th load parameter threshold value is greater than described the second load parameter threshold value.Described device, except comprising all structures shown in Fig. 7, can also comprise:

The second concentration reduces module 801, in response to the current while of described ore mill in reasonable oil pressure state and the first high load capacity parameter state, reduce the feed ore concentration of described ore mill;

Second concentration increase module 802, in response to the current while of described ore mill in reasonable oil pressure state and the first underload parameter state, increase the feed ore concentration of described ore mill.

Referring to Fig. 9, show the structure chart of the device embodiment 3 of ore mill feed ore concentration control in the application.In the present embodiment, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than the second load parameter threshold value and is greater than the first load parameter threshold value, described ore mill is current in Reasonable load parameter state.Described device, except comprising all structures shown in Fig. 7, can also comprise:

Subtract ore deposit module 901, for current in higher load condition in response to described ore mill, reduce the mine-supplying quantity of described ore mill; Described higher load condition is: the current while of described ore mill is in high oil pressure state and high load capacity parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and high load capacity parameter state in high oil pressure state and Reasonable load parameter state;

Increase ore deposit module 902, for current in low load condition in response to described ore mill, increase the mine-supplying quantity of described ore mill; Described low load condition is: the current while of described ore mill is in low oil pressure state and underload parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and underload parameter state in low oil pressure state and Reasonable load parameter state.

Referring to Figure 10, show the structure chart of the device embodiment 4 of ore mill feed ore concentration control in the application.In the present embodiment, described device, except comprising all structures shown in Fig. 9, can also comprise:

Maintain module 1001, in response to ore mill in abnormal load state, the mine-supplying quantity that maintains described ore mill is constant; Described abnormal load state comprises: the current while of described ore mill is in high oil pressure state and underload parameter state, and the current while of described ore mill is in low oil pressure state and high load capacity parameter state.

Referring to Figure 11, show the structure chart of a kind of parameter calculating module 702 in the embodiment of the present application.Wherein, described parameter calculating module 702 can comprise:

Accounting calculating sub module 1101, accounts for the mill signal to noise ratio example of maximum mill sound state value and described mill power and accounts for the power proportions of maximum mill power for calculating described mill sound state value;

Parameter is determined submodule 1102, for according to described mill signal to noise ratio example and described power proportions are weighted to average result, obtains described mill load parameter.

Furthermore, optional, referring to Figure 12, show a kind of parameter in the embodiment of the present application and determine the structure chart of submodule 1102.Wherein, described parameter determines that submodule 1102 can comprise:

Weighted average submodule 1201, for according to the coefficient of reliability of ore mill detection signal, described mill signal to noise ratio example and described power proportions being weighted on average, obtains result of weighted average;

First revises submodule 1202, for described result of weighted average being revised with the first correction factor of presetting, obtains described mill load parameter.

Referring to Figure 13, show the structure chart of a kind of acquisition module 701 in the embodiment of the present application.Wherein, described acquisition module 701 can comprise:

Signal detection submodule 1301, for by the signal of telecommunication that the mill sound detect of described ore mill is obtained to described mill sound detect;

Mill sound is determined submodule 1302, for account for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determines the mill sound state value that described ore mill is current; Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is the poor of described signal higher limit and the signal value of rolling off the production line, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect;

Oil pressure obtains submodule 1303, for obtaining the current main shaft oil pressure of ore mill;

Power obtains submodule 1304, for obtaining the current mill power of ore mill.

Furthermore, optional, referring to Figure 14, show a kind of structure chart that grinds sound and determine submodule 1302 in the embodiment of the present application.Wherein, described mill sound determines that submodule 1302 can comprise:

Signal proportion submodule 1401, accounts for the signal proportion of described signal spacing width for calculating difference between described signal higher limit and the current value of the described signal of telecommunication;

Second revises submodule 1402, for described signal proportion being revised with the second corrected parameter of presetting, obtains the current mill sound state value of described ore mill.

By the technical scheme of the present embodiment, in the time that ore mill load condition is higher, reduce feed ore concentration, more abundant to reduce the load of ore mill and to make the throwing of raw ore lump ore and steel ball pound attrition process, thereby make the grinding efficiency of grinding machine reach requirement, in the time that ore mill load condition is on the low side, increase feed ore concentration, to improve the load of ore mill and to improve the ore handling capacity of grinding machine, thereby improve output and the efficiency of grinding process, reduce the energy consumption of unit ton concentrate.

It should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.Term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.

For device embodiment, because it corresponds essentially to embodiment of the method, so relevant part is referring to the part explanation of embodiment of the method.Device embodiment described above is only schematic, the wherein said unit as separating component explanation can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed on multiple NEs.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.

The above is only the application's the specific embodiment; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection domain.

Claims (16)

1. a method for ore mill feed ore concentration control, is characterized in that, comprising:

Obtain ore mill current mill sound state value, main shaft oil pressure and mill power, and calculate mill load parameter according to described mill sound state value and mill power;

According to the load value scope under the oil pressure number range under described main shaft oil pressure and described mill load parameter, determine oil pressure state and load parameter state that described ore mill is current, wherein, if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, the current underload parameter state that belongs to of described ore mill, if described mill load parameter is more than or equal to the second load parameter threshold value, the current high load capacity parameter state that belongs to of described ore mill, wherein, described the second oil pressure threshold value is greater than described the first oil pressure threshold value, described the second load parameter threshold value is greater than described the first load parameter threshold value,

In high oil pressure state and high load capacity parameter state, reduce the feed ore concentration of described ore mill in response to the current while of described ore mill;

In low oil pressure state and underload parameter state, increase the feed ore concentration of described ore mill in response to the current while of described ore mill.

2. method according to claim 1, it is characterized in that, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and is greater than the 3rd load parameter threshold value, described ore mill is current in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and is more than or equal to the second load parameter threshold value, described ore mill is current in the first high load capacity parameter state; Wherein, described the 3rd load parameter threshold value is less than described the first load parameter threshold value, and described the 4th load parameter threshold value is greater than described the second load parameter threshold value;

Described method also comprises:

In reasonable oil pressure state and the first high load capacity parameter state, reduce the feed ore concentration of described ore mill in response to the current while of described ore mill;

In reasonable oil pressure state and the first underload parameter state, increase the feed ore concentration of described ore mill in response to the current while of described ore mill.

3. method according to claim 1, it is characterized in that, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than the second load parameter threshold value and is greater than the first load parameter threshold value, described ore mill is current in Reasonable load parameter state;

Described method also comprises:

Current in higher load condition in response to described ore mill, reduce the mine-supplying quantity of described ore mill; Described higher load condition is: the current while of described ore mill is in high oil pressure state and high load capacity parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and high load capacity parameter state in high oil pressure state and Reasonable load parameter state;

Current in low load condition in response to described ore mill, increase the mine-supplying quantity of described ore mill; Described low load condition is: the current while of described ore mill is in low oil pressure state and underload parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and underload parameter state in low oil pressure state and Reasonable load parameter state.

4. method according to claim 3, is characterized in that, also comprises:

In response to ore mill, in abnormal load state, the mine-supplying quantity that maintains described ore mill is constant; Described abnormal load state comprises: the current while of described ore mill is in high oil pressure state and underload parameter state, and the current while of described ore mill is in low oil pressure state and high load capacity parameter state.

5. method according to claim 1, is characterized in that, described foundation described mill sound state value and mill power calculate mill load parameter, comprising:

Calculate the power proportions that described mill sound state value accounts for the mill signal to noise ratio example of maximum mill sound state value and described mill power and account for maximum mill power;

According to described mill signal to noise ratio example and described power proportions are weighted to average result, obtain described mill load parameter.

6. method according to claim 5, is characterized in that, described basis is weighted average result to described mill signal to noise ratio example and described power proportions, obtains described mill load parameter, comprising:

According to the coefficient of reliability of ore mill detection signal, described mill signal to noise ratio example and described power proportions are weighted on average, obtain result of weighted average;

With the first correction factor of presetting, described result of weighted average is revised, obtained described mill load parameter.

7. method according to claim 1, is characterized in that, described in obtain the current mill sound state value of ore mill, comprising:

By the mill sound detect of described ore mill being obtained to the signal of telecommunication of described mill sound detect;

Account for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determine the mill sound state value that described ore mill is current;

Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is the poor of described signal higher limit and the signal value of rolling off the production line, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect.

8. method according to claim 7, is characterized in that, the described signal proportion that accounts for described signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication is determined the mill sound state value that described ore mill is current, specifically comprises:

Calculate the signal proportion that difference between described signal higher limit and the current value of the described signal of telecommunication accounts for described signal spacing width;

With the second corrected parameter of presetting, described signal proportion is revised, obtained the current mill sound state value of described ore mill.

9. a device for ore mill feed ore concentration control, is characterized in that, comprising:

Acquisition module, for obtaining ore mill current mill sound state value, main shaft oil pressure and mill power;

Parameter calculating module, for calculating mill load parameter according to described mill sound state value and mill power;

State determination module, for according to the load value scope under the oil pressure number range under described main shaft oil pressure and described mill load parameter, determines oil pressure state and load parameter state that described ore mill is current, wherein, if described main shaft oil pressure is less than or equal to the first oil pressure threshold value, described ore mill is current in low oil pressure state, if described main shaft oil pressure is more than or equal to the second oil pressure threshold value, described ore mill is current belongs to high oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value, the current underload parameter state that belongs to of described ore mill, if described mill load parameter is more than or equal to the second load parameter threshold value, the current high load capacity parameter state that belongs to of described ore mill, wherein, described the second oil pressure threshold value is greater than described the first oil pressure threshold value, described the second load parameter threshold value is greater than described the first load parameter threshold value,

The first concentration reduces module, in response to the current while of described ore mill in high oil pressure state and high load capacity parameter state, reduce the feed ore concentration of described ore mill;

First concentration increase module, in response to the current while of described ore mill in low oil pressure state and underload parameter state, increase the feed ore concentration of described ore mill.

10. device according to claim 9, it is characterized in that, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than or equal to the first load parameter threshold value and is greater than the 3rd load parameter threshold value, described ore mill is current in the first underload parameter state, if described mill load parameter is less than the 4th load parameter threshold value and is more than or equal to the second load parameter threshold value, described ore mill is current in the first high load capacity parameter state; Wherein, described the 3rd load parameter threshold value is less than described the first load parameter threshold value, and described the 4th load parameter threshold value is greater than described the second load parameter threshold value;

Described device also comprises:

The second concentration reduces module, in response to the current while of described ore mill in reasonable oil pressure state and the first high load capacity parameter state, reduce the feed ore concentration of described ore mill;

Second concentration increase module, in response to the current while of described ore mill in reasonable oil pressure state and the first underload parameter state, increase the feed ore concentration of described ore mill.

11. devices according to claim 9, it is characterized in that, if described main shaft oil pressure is less than the second oil pressure threshold value and is greater than the first oil pressure threshold value, described ore mill is current in reasonable oil pressure state, if described mill load parameter is less than the second load parameter threshold value and is greater than the first load parameter threshold value, described ore mill is current in Reasonable load parameter state;

Described device also comprises:

Subtract ore deposit module, for current in higher load condition in response to described ore mill, reduce the mine-supplying quantity of described ore mill; Described higher load condition is: the current while of described ore mill is in high oil pressure state and high load capacity parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and high load capacity parameter state in high oil pressure state and Reasonable load parameter state;

Increase ore deposit module, for current in low load condition in response to described ore mill, increase the mine-supplying quantity of described ore mill; Described low load condition is: the current while of described ore mill is in low oil pressure state and underload parameter state, the current while of described ore mill, the current while of described ore mill was in reasonable oil pressure state and underload parameter state in low oil pressure state and Reasonable load parameter state.

12. devices according to claim 11, is characterized in that, also comprise:

Maintain module, in response to ore mill in abnormal load state, the mine-supplying quantity that maintains described ore mill is constant; Described abnormal load state comprises: the current while of described ore mill is in high oil pressure state and underload parameter state, and the current while of described ore mill is in low oil pressure state and high load capacity parameter state.

13. devices according to claim 9, is characterized in that, described parameter calculating module comprises:

Accounting calculating sub module, accounts for the mill signal to noise ratio example of maximum mill sound state value and described mill power and accounts for the power proportions of maximum mill power for calculating described mill sound state value;

Parameter is determined submodule, for according to described mill signal to noise ratio example and described power proportions are weighted to average result, obtains described mill load parameter.

14. devices according to claim 13, is characterized in that, described parameter determines that submodule comprises:

Weighted average submodule, for according to the coefficient of reliability of ore mill detection signal, described mill signal to noise ratio example and described power proportions being weighted on average, obtains result of weighted average;

First revises submodule, for described result of weighted average being revised with the first correction factor of presetting, obtains described mill load parameter.

15. devices according to claim 9, is characterized in that, described acquisition module comprises:

Signal detection submodule, for by the signal of telecommunication that the mill sound detect of described ore mill is obtained to described mill sound detect;

Mill sound is determined submodule, for account for the signal proportion of signal spacing width according to the difference between signal higher limit and the current value of the described signal of telecommunication, determines the mill sound state value that described ore mill is current; Wherein, described signal higher limit is the current value of the maximum signal of telecommunication of described ore mill mill sound detect, described signal spacing width is the poor of described signal higher limit and the signal value of rolling off the production line, and described signal lower limit is the current value of the minimum signal of telecommunication of described ore mill mill sound detect;

Oil pressure obtains submodule, for obtaining the current main shaft oil pressure of ore mill;

Power obtains submodule, for obtaining the current mill power of ore mill.

16. devices according to claim 15, is characterized in that, the sound that grinds determines that submodule comprises:

Signal proportion submodule, accounts for the signal proportion of described signal spacing width for calculating difference between described signal higher limit and the current value of the described signal of telecommunication;

Second revises submodule, for described signal proportion being revised with the second corrected parameter of presetting, obtains the current mill sound state value of described ore mill.

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