CN105057079A - Control system and control method of ore grinding ore granularity - Google Patents
Control system and control method of ore grinding ore granularity Download PDFInfo
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Abstract
The invention relates to the technical field of beneficiation, in particular to a control system and control method of ore grinding ore granularity. The control system of the ore grinding ore granularity comprises a human-computer interface unit, a detection unit, a central data processing unit and an executing unit. Set parameters related to the ore grinding ore granularity are set in the human-computer interface unit, actual parameters related to the ore grinding ore granularity are detected in real time through the detection unit, and the actual parameters and the set parameters are intelligently analyzed and judged through the central data processing unit. Then, the executing unit is used for controlling related actions, and the proportion of large ore, medium ore and small ore is kept within the range of the set parameters. The stability of the ore amount is guaranteed through automatic control, and the optimal granularity level distribution of feeding ore is guaranteed. The ore grinding efficiency of a semi-automatic ore grinding machine is greatly improved, and the overflow concentration and fineness of a whirlcone are improved to a certain degree.
Description
Technical field
The present invention relates to mixing beneficiation technical field, especially relate to a kind of ore grinding ore grain size control system and control method.
Background technology
Ore grinding part is as ore dressing part very important part, and the quality of grinding operation index directly has influence on the stable of next stage beneficiation flowsheet floatation indicators.Therefore, stable control ore grinding ore grain size index has very important effect for mineral processing production.
Existing grinding flowsheet is roughly as follows:
Ore drops on ore pile after being rotated crusher in crushing, then is given on feeding belt by ore by the heavy plate feeder below ore pile.Ore enters semi-autogenous mill by Belt Conveying again, and the feeding end of semi-autogenous mill is provided with the Semi-Autogenous valve that adds water, and water and ore enter semi-autogenous mill, have steel ball in semi-autogenous mill, by the rotation of semi-autogenous mill by ore reduction, discharges from the exhaust end of semi-autogenous mill;
The exhaust end of semi-autogenous mill is provided with Semi-Autogenous flushing water valve, the ore pulp of discharging from the exhaust end of semi-autogenous mill carries out first time classification by straight line shaker, straight line shaker also has flushing water, and thick particle falls into passback belt by vibration on compass screen surface, then returns and enter semi-autogenous mill fragmentation;
The undersize of straight line shaker, enters Pulp pump pond, is transported to cyclone by Pulp pump, carries out second time classification; Qualified grade overflows and enters floatation system by cyclone, and coarse granule enters ball mill from the desilting mouth of cyclone, again grinds, and discharges afterwards from the exhaust end of ball mill.The exhaust end of ball mill is provided with flushing water, and the ore pulp that ball milling is discharged enters Pulp pump pond, and then enters cyclone classification.
Because the disposal ability of semi-autogenous mill is limited, if ore particle mean size is excessive, then the ore removal of semi-autogenous mill can be caused second-rate, and if ore particle mean size is too small, then waste the production capacity of semi-autogenous mill.And the lump footpath span of gyratory crusher fragmentation is comparatively large, therefore needs ore to classify according to block footpath, then send into semi-autogenous mill by a certain percentage, the quality of the final products of guarantee ore grinding like this and output,
In prior art, the parameter normally by adjusting cyclone adjusts the granularity of cyclone overflow, does not provide solution from ore source.
Summary of the invention
The object of the present invention is to provide a kind of ore grinding ore grain size control system and control method, the optimum of semi-autogenous mill can be realized to ore control.
A kind of ore grinding ore grain size control system provided by the invention, comprising:
Human and machine interface unit, inputs the setup parameter about ore grinding ore grain size wherein, and described setup parameter comprises: the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder; Send in the ore of semi-autogenous mill, the area ratio range parameter shared by large ore and the area ratio range parameter shared by little ore; And send into the ore total amount parameter of semi-autogenous mill;
Detecting unit, be configured to detect the actual parameter about ore grinding ore grain size, described actual parameter comprises: send in the ore of semi-autogenous mill, the real area ratio shared by large ore and the real area ratio shared by little ore, and the actual total amount of ore sending into semi-autogenous mill;
Central data processing unit, described actual parameter and described setup parameter is configured to directly to carry out intellectual analysis judgement, and according to analysis and judged result, improve or reduce the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder;
Performance element, according to the frequency parameter after adjustment, corresponding raising or reduce the operating frequency of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder, make in the ore of feeding semi-autogenous mill, real area ratio shared by large ore and the real area ratio shared by little ore respectively in the area ratio range parameter shared by the large ore of setting and the area ratio range parameter shared by little ore, and make the actual total amount of the ore of feeding semi-autogenous mill be stabilized in the ore total amount parameter of the feeding semi-autogenous mill of setting.
Preferably, described detecting unit detects large real area ratio shared by ore and the real area ratio shared by little ore in the ore sending into semi-autogenous mill, by central data processing unit, itself and the area ratio range parameter shared by the large ore set and the area ratio range parameter shared by little ore are compared, as the real area ratio of large ore or little ore below or above the lower limit of the area ratio scope of setting or higher limit time, then improve or reduce the frequency of large ore heavy plate feeder or little ore heavy plate feeder accordingly, until the real area ratio of large ore or little ore is stabilized within the scope of the area ratio of setting,
In the process of real area ratio adjusting large ore or little ore, the deviation that the ore deposit simultaneously detected according to mine-supplying quantity and the belt conveyer scale of setting is measured, automatically the frequency of ore heavy plate feeder in being adjusted by PID, makes the actual total amount of the ore of feeding semi-autogenous mill continually and steadily in the ore total amount parameter of the feeding semi-autogenous mill of setting.
Preferably, described setup parameter also comprises higher limit and the lower limit of the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder.
Preferably, the block footpath of described large ore is 100mm ~ 200mm, and the block footpath of described middle ore is 50mm ~ 100mm, and the block footpath of described little ore is 0 ~ 50mm.
Preferably, described ore is broken by gyratory crusher, obtains large ore, middle ore and little ore, and sends and drop to ore pile; According to the segregation effect of ore, little ore is positioned at the central authorities of ore pile, and large ore is positioned at the both sides of the edge of ore pile, and two regions between little ore and large ore are middle ore.
Preferably, described large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder respectively have two groups, are arranged at the below of ore pile, corresponding with the position of large ore, middle ore, little ore respectively; Often organize heavy plate feeder and all have two, be symmetrically arranged in the both sides of feeding belt.
Preferably, described performance element adopts the mode of substep adjustment, carries out intermittent unique step adjustment to the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder.
A kind of ore grinding ore grain size control method provided by the invention, comprising:
Foresee steps: input the setup parameter about ore grinding ore grain size in human and machine interface unit, described setup parameter comprises: the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder; Send in the ore of semi-autogenous mill, the area ratio range parameter shared by large ore and the area ratio range parameter shared by little ore; And send into the ore total amount parameter of semi-autogenous mill;
Detecting step: utilize detecting unit detection about the actual parameter of ore grinding ore grain size, described actual parameter comprises: send in the ore of semi-autogenous mill, real area ratio shared by large ore and the real area ratio shared by little ore, and the actual total amount of ore sending into semi-autogenous mill;
Treatment step: the described actual parameter detected by described detecting unit is transferred to central data processing unit with the described setup parameter inputted by described interface operation unit, carries out intellectual analysis judgement by described central data processing unit; And
Ore grinding ore grain size rate-determining steps: according to the analysis judged result of described CPU, control improve or reduce large ore heavy plate feeder by performance element, the actual operating frequency of middle ore heavy plate feeder and little ore heavy plate feeder, make in the ore of feeding semi-autogenous mill, real area ratio shared by large ore and the real area ratio shared by little ore are respectively in the area ratio range parameter shared by the large ore of setting and the area ratio range parameter shared by little ore, and make the actual total amount of the ore of feeding semi-autogenous mill be stabilized in the ore total amount parameter of the feeding semi-autogenous mill of setting.
Preferably, described ore grinding ore grain size rate-determining steps is:
Described detecting unit detects large real area ratio shared by ore and the real area ratio shared by little ore in the ore sending into semi-autogenous mill, by central data processing unit, itself and the area ratio range parameter shared by the large ore set and the area ratio range parameter shared by little ore are compared, as the real area ratio of large ore or little ore below or above the lower limit of the area ratio scope of setting or higher limit time, then improve or reduce the frequency of large ore heavy plate feeder or little ore heavy plate feeder accordingly, until the real area ratio of large ore or little ore is stabilized within the scope of the area ratio of setting,
In the process of real area ratio adjusting large ore or little ore, the frequency of ore heavy plate feeder in simultaneously automatically being adjusted by performance element, makes the actual total amount of the ore of feeding semi-autogenous mill continually and steadily in the ore total amount parameter of the feeding semi-autogenous mill of setting.
Preferably, in described ore grinding ore grain size rate-determining steps, central data processing unit adopts the mode of substep adjustment, intermittent unique step adjustment is carried out to the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder, if qualified, just no longer adjust, if defective, just continue adjustment, until limit value.
Beneficial effect of the present invention is:
(1) ensure that the stable of mine-supplying quantity, in turn ensure that to the optimum grain class distribution of ore deposit ore, drastically increase the grinding efficiency of ore grinding semi-autogenous mill, cyclone overflow enriched fineness is also had some improvement;
(2) data acquisition and device manipulate whole automation, fast response time;
(3) more accurate to the regulation and control of each device;
(4) make use of the disposal ability of semi-autogenous mill to greatest extent, improve the service life of semi-autogenous mill liner plate simultaneously.
Accompanying drawing explanation
The schematic diagram of the grinding flowsheet of Fig. 1 involved by the embodiment of the present invention;
Fig. 2 is the schematic diagram of the ore grinding ore grain size control system that the present invention relates to;
When Fig. 3 is not for using of the present invention, the ore grain size change curve of the feeding semi-autogenous mill that ore grain size analyzer records;
Fig. 4 is after using the present invention, the ore grain size change curve of the feeding semi-autogenous mill that ore grain size analyzer records.
Detailed description of the invention
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
The schematic diagram of the grinding flowsheet of Fig. 1 involved by the embodiment of the present invention.
As shown in Figure 1, in one preferred embodiment, mine-feeding equipment is heavy plate feeder 1.Its grinding flowsheet is roughly as described below:
Ore is broken through gyratory crusher, drops in the process of ore pile and can produce segregation effect.The rule of segregation effect is: the ore that in dropping process, particle is larger is more walked toward both sides, and the less ore of particle is in central authorities.The arranged beneath of ore pile 12 heavy plate feeder, are designated as 1 respectively
#heavy plate feeder ~ 12
#heavy plate feeder, every two compositions one group, are six groups altogether.Often organize the both sides, top that heavy plate feeder is oppositely disposed in feeding belt 2, carry ore to feeding belt 2 simultaneously.1
#~ 2
#heavy plate feeder, 3
#~ 4
#heavy plate feeder, 5
#~ 6
#heavy plate feeder, 7
#~ 8
#heavy plate feeder, 9
#~ 10
#heavy plate feeder, 11
#~ 12
#heavy plate feeder from the corner of ore pile to centre, then arrives again to corner successively.Can think, 1
#~ 2
#heavy plate feeder, 11
#~ 12
#the ore grain size distribution that heavy plate feeder is corresponding is comparatively thick, is large ore heavy plate feeder; 3
#~ 4
#heavy plate feeder, 9
#~ 10
#the ore grain size distribution that heavy plate feeder is corresponding is medium, is middle ore heavy plate feeder; 7
#~ 8
#heavy plate feeder, 9
#~ 10
#the ore grain size distribution that heavy plate feeder is corresponding is comparatively thin, is little ore heavy plate feeder.
Under normal circumstances, the same time opens six heavy plate feeder, other six for subsequent use, the heavy plate feeder of work is all paired setting, and give ore deposit frequency consistent, can prevent like this because left and right is uneven and cause belt deviation, as first opened 1 first time period to ore deposit
#~ 6
#heavy plate feeder, 7
#~ 12
#heavy plate feeder is for subsequent use, opens 7 in the next time period
#~ 12
#heavy plate feeder, 1
#~ 6
#heavy plate feeder is for subsequent use.
Ore is given on feeding belt 2 by heavy plate feeder 1, and measures actual mine-supplying quantity by belt conveyer scale 3.Ore delivers into semi-autogenous mill 5 by feeding belt 2 again, the feeding end of semi-autogenous mill 5 is provided with the Semi-Autogenous valve 4 that adds water, actual confluent is recorded by the Semi-Autogenous valve flowmeter 40 that adds water, water and ore enter semi-autogenous mill 5, steel ball is had in semi-autogenous mill 5, by the rotation of semi-autogenous mill 5 by ore reduction, discharge from the exhaust end of semi-autogenous mill 5;
The exhaust end of semi-autogenous mill 5 is provided with Semi-Autogenous flushing water valve 6, and actual confluent is recorded by Semi-Autogenous flushing water valve flowmeter 60; The ore pulp of discharging from the exhaust end of semi-autogenous mill 5 carries out first time classification by straight line shaker 7, straight line shaker 7 also there is flushing water, thick particle falls into No. four belts by vibration on compass screen surface, turn back to feeding belt 2 (not shown) by No. six belts again, again enter semi-autogenous mill 5 broken;
The undersize of straight line shaker 7, enters Pulp pump pond 8, and the actual liquid level in Pulp pump pond 8 is recorded by Pulp pump pit level meter 80, is transported to cyclone 10, carries out second time classification by Pulp pump 9; By regulating the technological parameter such as feed ore concentration, pressure, flow, work number, excess flow of cyclone 10, qualified grade overflows and enters floatation system by cyclone 10, coarse granule enters ball mill 11 from the desilting mouth of cyclone 10, again grind, discharge from the exhaust end of ball mill 11 afterwards.The exhaust end of ball mill 11 is provided with flushing water, and control confluent by controlling ball milling flushing water valve 12, actual confluent is recorded by ball milling flushing water valve flowmeter 120, and the ore pulp that ball milling is discharged enters Pulp pump pond 8, and then enters cyclone 10 classification.
The arrival end of cyclone 10 is provided with cyclone feed ore concentration detector 100, cyclone 10 is provided with cyclone Pressure gauge 103.
The pipeline that cyclone 10 overflow enters floatation system there is a cyclone excess flow meter 101, detects cyclone excess flow; Also have a particle size analyzer (cyclone overflow granularity instrument) 102 in addition for detecting cyclone overflow granularity and cyclone effluent concentration, and using important reference that cyclone overflow granularity and cyclone effluent concentration regulate as ore grinding.
Fig. 2 is the schematic diagram of the ore grinding ore grain size control system that the present invention relates to; It specifically forms and control planning is:
Human and machine interface unit, inputs the setup parameter about ore grinding ore grain size wherein, and described setup parameter comprises: the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder; Send in the ore of semi-autogenous mill, the area ratio range parameter shared by large ore and the area ratio range parameter shared by little ore; And send into the ore total amount parameter of semi-autogenous mill;
Detecting unit, be configured to detect the actual parameter about ore grinding ore grain size, described actual parameter comprises: send in the ore of semi-autogenous mill, the real area ratio shared by large ore and the real area ratio shared by little ore, and the actual total amount of ore sending into semi-autogenous mill;
Central data processing unit, described actual parameter and described setup parameter is configured to directly to carry out intellectual analysis judgement, and according to analysis and judged result, improve or reduce the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder;
Performance element, according to the frequency parameter after adjustment, corresponding raising or reduce the operating frequency of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder, make in the ore of feeding semi-autogenous mill, real area ratio shared by large ore and the real area ratio shared by little ore respectively in the area ratio range parameter shared by the large ore of setting and the area ratio range parameter shared by little ore, and make the actual total amount of the ore of feeding semi-autogenous mill approach the ore total amount parameter of the feeding semi-autogenous mill of setting.
For the present invention, ore grain size analyzer measurement data also gathers image, and ore grain size image analysis system completes analysis quickly and accurately, to the particle size distribution characteristic of yield ores.Ore is divided three classes with block footpath: little ore 0 ~ 50mm, middle ore 50mm ~ 100mm, large ore 100mm ~ 200mm, super large more than ore 200mm.Because the content of super large ore is few, here do not detect, also do not participate in controlling.
First the reasonable area ratio interval setting large ore in interface operation unit is 280 ‰ ~ 350 ‰, and the reasonable area ratio interval of little ore is 200 ‰ ~ 260 ‰; The ore total amount sending into semi-autogenous mill is 1800t/h; And set the operating frequency of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder, as 10Hz; In addition, the frequency limits of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder is set, is generally 5Hz ~ 15Hz.
Control for large ore heavy plate feeder: when the large mineral content that ore grain size analyzer detects is less than 280 ‰, large mineral content is too small, then increase running 1
#~ 2
#heavy plate feeder or 11
#~ 12
#the frequency 0.1Hz of heavy plate feeder, observe the content of ore grain size after 5min again, if large mineral content is still lower than 280 ‰, then continue to increase 0.1Hz, observe again after 5min, until large ore grain size content be more than or equal to 280 ‰ or frequency bring up to maximum 15Hz.When the large ore grain size content detected is greater than 350 ‰, then reduce by 1
#~ 2
#heavy plate feeder or 11
#~ 12
#heavy plate feeder frequency 0.1Hz, the inspection of every 5min clock once, reduces 0.1Hz at every turn, until ore grain size is less than 350 ‰ or frequency drops to minimum 5Hz.The low-limit frequency of large ore heavy plate feeder setting is 5Hz, when the given frequency of heavy plate feeder is lower than 5Hz, likely there will be card ore phenomenon.
When the large ore grain size detected is between 280 ‰ ~ 350 ‰, then large ore heavy plate feeder keeps ongoing frequency constant.
The control adjustment 5 of little ore
#~ 6
#or 7
#~ 8
#heavy plate feeder frequency, control method is identical with the control of the heavy plate of large ore.
The proportional amount of large ore and little ore is in rational distributed area, and the ratio of intermediate ore is naturally also just in rational interval.When large ore and little ore because of ratio improper time, the frequency of large ore heavy plate feeder and little ore heavy plate feeder will adjust automatically, the ore deposit caused on feeding belt 2 amount changes by this, now, increase or the frequency of ore heavy plate feeder in reducing, the actual total amount of ore of belt conveyer scale 3 detection on feeding belt 2 is made to approach the ore total amount parameter of setting, stable to ensure ore deposit amount.
When Fig. 3 is not for using of the present invention, the ore grain size change curve of the feeding semi-autogenous mill that ore grain size analyzer records; Fig. 4 is after using the present invention, the ore grain size change curve of the feeding semi-autogenous mill that ore grain size analyzer records.Contrast uses the ore grain size change curve before and after the present invention, before using the present invention, ore grain size fluctuation is larger, and after using the present invention, large ore is stabilized in 280 ‰ ~ 350 ‰, little ore is stabilized in 200 ‰ ~ 260 ‰, both ensure that the stable of mine-supplying quantity, in turn ensure that to the optimum grain class distribution of ore deposit ore, drastically increase the grinding efficiency of ore grinding semi-autogenous mill, cyclone overflow enriched fineness is also improved.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. an ore grinding ore grain size control system, is characterized in that, comprising:
Human and machine interface unit, inputs the setup parameter about ore grinding ore grain size wherein, and described setup parameter comprises: the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder; Send in the ore of semi-autogenous mill, the area ratio range parameter shared by large ore and the area ratio range parameter shared by little ore; And send into the ore total amount parameter of semi-autogenous mill;
Detecting unit, be configured to detect the actual parameter about ore grinding ore grain size, described actual parameter comprises: send in the ore of semi-autogenous mill, the real area ratio shared by large ore and the real area ratio shared by little ore, and the actual total amount of ore sending into semi-autogenous mill;
Central data processing unit, described actual parameter and described setup parameter is configured to directly to carry out intellectual analysis judgement, and according to analysis and judged result, improve or reduce the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder;
Performance element, according to the frequency parameter after adjustment, corresponding raising or reduce the operating frequency of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder, make in the ore of feeding semi-autogenous mill, real area ratio shared by large ore and the real area ratio shared by little ore respectively in the area ratio range parameter shared by the large ore of setting and the area ratio range parameter shared by little ore, and make the actual total amount of the ore of feeding semi-autogenous mill be stabilized in the ore total amount parameter of the feeding semi-autogenous mill of setting.
2. ore grinding ore grain size control system according to claim 1, it is characterized in that, described detecting unit detects large real area ratio shared by ore and the real area ratio shared by little ore in the ore sending into semi-autogenous mill, by central data processing unit, itself and the area ratio range parameter shared by the large ore set and the area ratio range parameter shared by little ore are compared, as the real area ratio of large ore or little ore below or above the lower limit of the area ratio scope of setting or higher limit time, then improve or reduce the frequency of large ore heavy plate feeder or little ore heavy plate feeder accordingly, until the real area ratio of large ore or little ore is stabilized within the scope of the area ratio of setting,
In the process of real area ratio adjusting large ore or little ore, the deviation that the ore deposit simultaneously detected according to mine-supplying quantity and the belt conveyer scale of setting is measured, automatically the frequency of ore heavy plate feeder in being adjusted by PID, makes the actual total amount of the ore of feeding semi-autogenous mill be stabilized in the ore total amount parameter of the feeding semi-autogenous mill of setting.
3. ore grinding ore grain size control system according to claim 2, it is characterized in that, described setup parameter also comprises higher limit and the lower limit of the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder.
4. ore grinding ore grain size control system according to claim 2, is characterized in that, the block footpath of described large ore is 100mm ~ 200mm, and the block footpath of described middle ore is 50mm ~ 100mm, and the block footpath of described little ore is 0 ~ 50mm.
5. ore grinding ore grain size control system according to claim 2, is characterized in that, described ore is broken by gyratory crusher, obtains large ore, middle ore and little ore, and sends and drop to ore pile; According to the segregation effect of ore, little ore is positioned at the central authorities of ore pile, and large ore is positioned at the both sides of the edge of ore pile, and two regions between little ore and large ore are middle ore.
6. ore grinding ore grain size control system according to claim 4, it is characterized in that, described large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder respectively have two groups, be arranged at the below of ore pile, corresponding with the position of large ore, middle ore, little ore respectively; Often organize heavy plate feeder and all have two, be symmetrically arranged in the both sides of feeding belt.
7. ore grinding ore grain size control system according to claim 2, it is characterized in that, described performance element adopts the mode of substep adjustment, carries out intermittent unique step adjustment to the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder.
8. an ore grinding ore grain size control method, is characterized in that, comprising:
Foresee steps: input the setup parameter about ore grinding ore grain size in human and machine interface unit, described setup parameter comprises: the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder; Send in the ore of semi-autogenous mill, the area ratio range parameter shared by large ore and the area ratio range parameter shared by little ore; And send into the ore total amount parameter of semi-autogenous mill;
Detecting step: utilize detecting unit detection about the actual parameter of ore grinding ore grain size, described actual parameter comprises: send in the ore of semi-autogenous mill, real area ratio shared by large ore and the real area ratio shared by little ore, and the actual total amount of ore sending into semi-autogenous mill;
Treatment step: the described actual parameter detected by described detecting unit is transferred to central data processing unit with the described setup parameter inputted by described interface operation unit, carries out intellectual analysis judgement by described central data processing unit; And
Ore grinding ore grain size rate-determining steps: according to the analysis judged result of described CPU, control improve or reduce large ore heavy plate feeder by performance element, the actual operating frequency of middle ore heavy plate feeder and little ore heavy plate feeder, make in the ore of feeding semi-autogenous mill, real area ratio shared by large ore and the real area ratio shared by little ore are respectively in the area ratio range parameter shared by the large ore of setting and the area ratio range parameter shared by little ore, and make the actual total amount of the ore of feeding semi-autogenous mill stablize the ore total amount parameter of the feeding semi-autogenous mill of setting.
9. ore grinding ore grain size control method according to claim 8, is characterized in that, described ore grinding ore grain size rate-determining steps is:
Described detecting unit detects large real area ratio shared by ore and the real area ratio shared by little ore in the ore sending into semi-autogenous mill, by central data processing unit, it is carried out analysis with the area ratio range parameter shared by the large ore set and the area ratio range parameter shared by little ore to judge, as the real area ratio of large ore or little ore below or above the lower limit of the area ratio scope of setting or higher limit time, then improve or reduce the frequency of large ore heavy plate feeder or little ore heavy plate feeder accordingly, until the real area ratio of large ore or little ore is stabilized within the scope of the area ratio of setting,
In the process of real area ratio adjusting large ore or little ore, the deviation that the ore deposit simultaneously detected according to mine-supplying quantity and the belt conveyer scale of setting is measured, automatically the frequency of ore heavy plate feeder in being adjusted by PID, makes the actual total amount of the ore of feeding semi-autogenous mill continue to approach the ore total amount parameter of the feeding semi-autogenous mill of setting.
10. ore grinding ore grain size control method according to claim 9, it is characterized in that, in described ore grinding ore grain size rate-determining steps, central data processing unit adopts the mode of substep adjustment, carries out intermittent unique step adjustment to the frequency parameter of large ore heavy plate feeder, middle ore heavy plate feeder and little ore heavy plate feeder.
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| CN107051700A (en) * | 2016-10-20 | 2017-08-18 | 丹东东方测控技术股份有限公司 | A kind of method that utilization segregation effect improves semi-autogenous mill grinding efficiency |
| CN108745605A (en) * | 2018-06-26 | 2018-11-06 | 湖南泰通能源管理股份有限公司 | A kind of intelligence grinding system control method |
| CN111266178A (en) * | 2020-02-24 | 2020-06-12 | 新乡市中誉鼎力软件科技股份有限公司 | Radar detection-based broken stone transmission control system and method for mine exploitation |
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| CN111266178A (en) * | 2020-02-24 | 2020-06-12 | 新乡市中誉鼎力软件科技股份有限公司 | Radar detection-based broken stone transmission control system and method for mine exploitation |
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| CN112317110A (en) * | 2020-09-27 | 2021-02-05 | 鞍钢集团矿业有限公司 | Ore grinding granularity prediction system and method based on deep learning |
| CN112892794A (en) * | 2021-01-15 | 2021-06-04 | 清华大学 | Intelligent sand making real-time adjusting system and method in tunnel |
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| CN115400866B (en) * | 2022-08-22 | 2023-08-04 | 安徽铜冠（庐江）矿业有限公司 | Ore grinding control method, device, equipment and medium based on ore block characteristics |
| CN116328916A (en) * | 2023-03-29 | 2023-06-27 | 中才邦业(杭州)智能技术有限公司 | Open-circuit cement mill control method and system based on online particle size monitor |
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