CN116927036B - Aggregate production control method - Google Patents

Aggregate production control method Download PDF

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Publication number
CN116927036B
CN116927036B CN202311189948.1A CN202311189948A CN116927036B CN 116927036 B CN116927036 B CN 116927036B CN 202311189948 A CN202311189948 A CN 202311189948A CN 116927036 B CN116927036 B CN 116927036B
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cold
bin
overflow
hot
flow
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CN116927036A (en
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桑雨
郭倩
陈德志
蔡志勇
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Fujian Tietuo Machinery Co Ltd
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Fujian Tietuo Machinery Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1059Controlling the operations; Devices solely for supplying or proportioning the ingredients
    • E01C19/1063Controlling the operations
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1013Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1059Controlling the operations; Devices solely for supplying or proportioning the ingredients
    • E01C19/1068Supplying or proportioning the ingredients
    • E01C19/1072Supplying or proportioning the ingredients the solid ingredients

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

The invention discloses a control method for aggregate production, and belongs to the technical field of asphalt mixture production. The method specifically comprises the following steps: firstly, calculating the frequency of each cold storage bin, and judging whether flash occurs or not according to the frequency; judging whether the allowable limit range is exceeded or not according to the ratio of the overflow flow of each hot bin to the corresponding limit flow, and carrying out secondary adjustment on the frequency of each cold bin if the allowable limit range is exceeded; and finally, comparing the frequency of each cold material bin after secondary adjustment with the highest frequency 50HZ of the cold material bin, and if the ratio is greater than 1, performing tertiary adjustment on the frequency of the corresponding cold material bin. The control method gives consideration to flash control, reduces unnecessary adjustment of the cold material bin, has no delay in control of the frequency of the cold material bin, is accurate in control, improves the equipment performance, ensures that asphalt mixture equipment is produced in an optimal state, reduces flash, saves energy and reduces emission.

Description

Aggregate production control method
Technical Field
The invention relates to the technical field of asphalt mixture production, in particular to an aggregate production control method.
Background
Publication number CN 109554992a discloses a cold stock bin automatic adjusting method, which mainly comprises: 1. calibrating each cold material bin by adopting a weighing method; 2. calibrating the specification of a cold material bin; 3. giving an initial frequency of a cold storage bin; 4. calibrating a continuous level gauge of a hot stock bin and high and low positions of the continuous level gauge; 5. level change adjustment; 6. and (5) adjusting the material level. The initial frequency of the cold storage bin in the third step comprises the following steps: firstly, n hot stock bin formulas are set to be R1, R2 and … … Rn respectively, and actual hot stock formulas are set to be R1 and R2 … … Rn respectively, so that R1 is satisfied: r2 … … rn=r1: r2 … Rn, and r1+r2+ … +rn=100%, calculating to obtain an actual hot material formula rn=rn/(r1+r2+ … … +rn); secondly, setting the total yield of the cold storage bins as a certain value to be total, wherein the frequency of each cold storage bin is hz1 and hz2 … … hzn; again, an adjustment amount is added for automatic adjustment at the time of fluctuation of the material level at the time of automatic production, the adjustment amounts are respectively set to adj1, adj2, … … adjn, and the adjustment amount is controlled to be 1/n to-1/n; finally, calculating the frequency hzn = { [ (total rn)/CnHn ] [ (rn+adj) n ]/(1+adj 2+ … … +adjn) -bn }/an, hzn-1 = { [ (total rn-1) - (hzn an+bn): cnHn-1 ]/Cn-1/[ rn-1+adjn-1) ]/(1+adj 2+ … … +adjn) -bn-1 }/(1+adj n+1) and so on to obtain the frequency Hz1 = { [ total rn 1- (hzn n+bn)/(CnH 1- (hzn-1) n-1- (36H-1) n+1) n ]/(1+j2+j2+j2+adj 1) n }/(1+1) n }/(1+adj 1+j2+j2+jn) }/(1+1) n) }, according to the formula of the large-size material containing the small size material.
The third step is based on the following conditions: the sizes of the materials from Cold1 to Cold are gradually increased, the materials in Cold1 are only materials with the size of Hot1, the materials in Cold2 contain materials with the sizes of Hot1 and Hot2, and the similar types of Cold contain materials with the sizes of Hot1, hot2 and … … Hot.
However, since the Cold aggregate is affected by various factors such as mixing of the vibrating screen, shifting of the hopper, and even misoperation of operators in the actual screening process, each Cold aggregate may contain various Cold aggregates with different specifications, that is, it is difficult to achieve that the Cold1 to Cold n materials meet the above conditions in the actual production process. Therefore, it is difficult to effectively automatically adjust the cold bins in actual production. In addition, the cold material formula is automatically adjusted through the change of the bin position of the hot material bin and the height of the bin position of the hot material bin, and as the cold material is conveyed from the cold material bin to the drying roller to be heated and then stored in the hot material bin for a period of time, the control mode has time delay, and the control of the guide cooling bin is not timely.
Disclosure of Invention
The invention provides an aggregate production control method, which mainly aims at reducing unnecessary adjustment by calculating the optimal frequency of a cold storage bin and considering flash.
The invention adopts the following technical scheme:
an aggregate production control method comprising the steps of:
1. calculating the frequency F of each cold stock bin i The method specifically comprises the following steps:
1.1, acquiring corresponding specification materials of each hot bin contained in each cold bin in real time, and obtaining a ratio; 1.2 establishing a flow equation set for various specifications of materials, and solving and obtaining the flow x of the ith cooling bin i The method comprises the steps of carrying out a first treatment on the surface of the 1.3X obtained in step 1.2 i Value substitution formulaThe frequency F of each cold storage bin can be calculated i Wherein: q (Q) Cold i For the ith cold stock bin highest frequencyYield corresponding to 50 HZ;
2. and the hot bin flash control specifically comprises the following steps:
2.1 when the first step calculates the frequency of each cold storage bin to have F i <When 0, flash is generated; will F i Take the inverse of F i+ The method comprises the steps of carrying out a first treatment on the surface of the Frequency F i If it is positive, record F i+ The flash flow of each cold bin is denoted as x =0 Initial overflow i2.2 recording the flash flow of each hot silo as Q First overflow j The limiting flow of the flash quantity of each hot stock bin is recorded as Q Overflow limit j Total flash limiting flow Q Overflow limit total The method comprises the steps of carrying out a first treatment on the surface of the And calculating the flash flow of each hot bin according to the following formula: />Wherein: j (j) i The weight percentage of the specification material j in the ith cold storage bin is shown as j, the value of j is between a and f, and n is the number of the cold storage bins; sum of flash flow of all hot silos: />2.3 calculating the flash flow rate Q First overflow j Flow rate Q limited by hot stock bin Overflow limit j The ratio of (2) is denoted as k First overflow j ,/>Ratio k of sum of all hot silo flash flows to sum of total flash limiting flows Overflow of the first time ,/>2.4 taking k First overflow j Maximum value of (3): k (k) Initial overflow max =max{k Initial overflow a ,k Initial overflow b ,k Initial overflow c ,k Initial overflow d ,k Initial overflow e ,k Initial overflow f -a };2.5 when k Initial overflow max If the flow is more than 1, the overflow of a certain hot stock bin exceeds the allowable limit range and needs to be regulated; putting the whole setRated production of the plant is designated Q Total heat The adjusted total flow is denoted as Q Total of initial heat ,/>The frequency of each cold storage bin is secondarily adjusted, and the frequency of each cold storage bin is recalculated and recorded as F Yi i ,/>2.6 controlling the flash range after the secondary adjustment, and judging the frequency F of each cold material bin again Yi i If F Yi i The frequency adjustment of each cold storage bin can be realized if the temperature is less than or equal to 50; if F Yi i > 50, which indicates that the cold stock bin yield is insufficient, the corresponding yield of the cold stock bin 50HZ should be increased, and when the maximum flow of the cold stock bin cannot be adjusted, the yield should be reduced.
The aggregate production control method also comprises the flow control of the cold storage bin, and specifically comprises the following steps: 3.1 the secondary adjustment of the frequency F of the cold material bin Yi i The ratio to the highest frequency of 50HZ of the cold stock bin is denoted as k Cold i I.e.Taking k Cold i Maximum value of (3): k (k) Cold max =max{k Cold1 ,k Cold2 ,k Cold 3 ,k Cold 4 ,k Cold 5 ,k Cold 6 -a };3.2 when k Cold max When the temperature is more than 1, the frequency of a certain cold stock bin exceeds 50HZ, the adjustment is needed, and the total flow after the adjustment of the cold stock is recorded as Q Overflow cooling assembly ,/>3.3 recalculating the frequency of the ith Cold storage bin as F Overflow cooling i ,/>3.4F after three adjustments Overflow cooling i As the median value in the regulation, the regulation range is denoted as ΔF i At F Overflow cooling i ±ΔF i Can be adjusted within the rangeThe actual frequency is denoted as F Actual i ,F Actual i =F Overflow cooling i ±ΔF i
Further, the aggregate production control method further comprises the step of calculating the flash time and the flash flow of each heat cooking theory, and specifically comprises the following steps:
1) Set H j For each high-level mark point of the hot bin, when the hot bin is high, H j When the hot bin does not show high position, H is =1 j =0;
2) The flash flow of each material was designated as Q Overflow display j The increasing flow of the hot stock bin is recorded as Q Value-added display j At this time, the total yield of the hot materials isThe actual production flow of each hot stock bin is recorded as Q Production j ,/>
3) Each hot material flow is denoted as Q Thermal display j The actual production flow of each hot stock bin is recorded as Q Production j ,Q Thermal display j And Q is equal to Production j The difference is recorded as Q Difference j ,Q Thermal display j -Q Production j =Q Difference j The method comprises the steps of carrying out a first treatment on the surface of the When Q is Difference j When the temperature is less than or equal to 0, the hot stock bin does not generate increment, Q Value-added display j =0; when Q is Difference j When the value is more than 0, the hot stock bin can generate increment, and at the moment, Q Value-added display j =Q Difference j The maximum mass of each hot material bin capable of being filled with hot material is recorded as m Total j The time from the beginning of each hot bin to the overflow of the overflow bin is set as t j From empty to current Q in hot bin Value-added display j Change to Q Increment display j1 ,Q Increment display j2 ,……Q Value added display jn The flow duration is t respectively j1 ,t j2 ,……t jn The increment mass of the current hot stock bin internal material is recorded as m Material j ,m Material j =Q Increment display j1 *t j1 +Q Increment display j2 *t j2 +Q Value-added displayjn *t jn Theoretical flash time
Preferably, the specific method of the step 1.1 is as follows: an industrial high-speed camera is arranged at the discharging position of each cold material bin, and the industrial high-speed camera acquires a real-time cold material photo of the corresponding cold material bin; then optimizing the photo by graphic software, and classifying the shape of the cold material; and finally, calculating and obtaining the proportion of cold materials with various specifications in the photo through software.
Preferably, the specific method of the step 1.2 is as follows: 1.21 formulaEstablishing a flow equation set of all specifications, wherein: j (j) i The weight percentage of the specification material j in the ith cold storage bin is shown as j, the value of j is between a and f, and n is the number of the cold storage bins; 1.22 solving all x according to the equation set column determinant of step 1.21 i And (5) optimal solution.
As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
1. according to the invention, through a control method of aggregate production, the frequency of each cold storage bin is calculated, and whether flash occurs is judged according to the frequency; judging whether the allowable limit range is exceeded or not according to the ratio of the overflow flow of each hot bin to the corresponding limit flow, and carrying out secondary adjustment on the frequency of each cold bin if the allowable limit range is exceeded; and finally, comparing the frequency of each cold material bin after secondary adjustment with the highest frequency 50HZ of the cold material bin, and if the ratio is greater than 1, performing tertiary adjustment on the frequency of the corresponding cold material bin. The control method gives consideration to flash control, reduces unnecessary adjustment of the cold material bin, has no delay in control of the frequency of the cold material bin, is accurate in control, improves the equipment performance, ensures that asphalt mixture equipment is produced in an optimal state, and reduces the mixing rate and the channeling rate of the vibrating screen.
2. The invention also provides parameters such as hot material flash time, flash flow and the like, which are used for reference by a user to optimize raw materials, screens and formulas.
Detailed Description
The following describes specific embodiments of the present invention. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details. Well-known components, methods and procedures are not described in detail.
The following description will be made specifically on an asphalt mixture stirring apparatus of the LB4000 type, which includes 6 cold bins and 6 hot bins, and the standard materials contained in the hot bins are a, b, c, d, e, f, respectively.
A method of aggregate production control comprising:
1. cold stock bin frequency calculation
Rated production of the complete plant is designated as Q Total heat . For example, LB4000 type yield is 320t/h, i.e. Q Total heat =320t/h。
Each material formula of the hot material bin is marked as M i . The formulas of 6 materials of the LB4000 type hot stock bin are respectively recorded as: m is M a 、M b 、M c 、M d 、M e 、M f
The theoretical flow rate of each material in the hot material bin is as follows: q (Q) i =Q Total heat *M i . The flow rates of the LB4000 type 6 materials are respectively recorded as: q (Q) a 、Q b 、Q c 、Q d 、Q e 、Q f I.e. Q a =Q Total heat *M a ,Q b =Q Total heat *M b ,Q c =Q Total heat *M c ,Q d =Q Total heat *M d ,Q e =Q Total heat *M e ,Q f =Q Total heat *M f
The corresponding yield of each cold stock bin 50HZ is denoted as Q Cold i The method comprises the steps of carrying out a first treatment on the surface of the The corresponding flow rate of 50Hz of the LB4000 type 6 cold bins is as follows: q (Q) Cold1 、Q Cold2 、Q Cold 3 、Q Cold 4 、Q Cold 5 、Q Cold 6
Each cold bin frequency is denoted F i LB4000 number 6The frequency of the cold material bin is as follows: f (F) 1 、F 2 、F 3 、F 4 、F 5 、F 6
The flow rate of each cold material bin is denoted as x i LB4000 cold magazine flows were noted as x 1 、x 2 、x 3 、x 4 、x 5 、x 6
Thus only x is required i Then can pass throughThe frequency of each cold storage bin is calculated, and the specific calculation mode is as follows:
1.1, setting that each cold storage bin contains materials with corresponding specifications of each hot storage bin, and acquiring the materials with corresponding specifications of each hot storage bin in each cold storage bin in real time to obtain the proportion. Each cold material bin contains materials with corresponding specifications of each hot material bin and is respectively marked as a cold material 1 bin according to the percentage: a, a 1 、b 1 、c 1 、d 1 、e 1 、f 1 The method comprises the steps of carrying out a first treatment on the surface of the Cold material 2 bin: a, a 2 、b 2 、c 2 、d 2 、e 2 、f 2 The method comprises the steps of carrying out a first treatment on the surface of the 3 bins of cold materials: a, a 3 、b 3 、c 3 、d 3 、e 3 、f 3 The method comprises the steps of carrying out a first treatment on the surface of the 4 bins of cold materials: a, a 4 、b 4 、c 4 、d 4 、e 4 、f 4 The method comprises the steps of carrying out a first treatment on the surface of the 5 bins of cold materials: a, a 5 、b 5 、c 5 、d 5 、e 5 、f 5 The method comprises the steps of carrying out a first treatment on the surface of the Cold material 6 bin: a, a 6 、b 6 、c 6 、d 6 、e 6 、f 6
The specific method for acquiring the corresponding specification materials of each hot bin in each cold bin in real time in the step 1.1 is as follows: an industrial high-speed camera is arranged at the discharging position of each cold material bin, and the industrial high-speed camera acquires a real-time cold material photo of the corresponding cold material bin; then optimizing the photo by graphic software, and classifying the shape of the cold material; and finally, calculating and obtaining the proportion of cold materials with various specifications in the photo through software.
1.2, establishing a flow equation set of various specifications:
a 1 *x 1 +a 2 *x 2 +a 3 *x 3 +a 4 *x 4 +a 5 *x 5 +a 6 *x 6 =Q a
b 1 *x 1 +b 2 *x 2 +b 3 *x 3 +b 4 *x 4 +b 5 *x 5 +b 6 *x 6 =Q b
c 1 *x 1 +c 2 *x 2 +c 3 *x 3 +c 4 *x 4 +c 5 *x 5 +c 6 *x 6 =Q c
d 1 *x 1 +d 2 *x 2 +d 3 *x 3 +d 4 *x 4 +d 5 *x 5 +d 6 *x 6 =Q d
e 1 *x 1 +e 2 *x 2 +e 3 *x 3 +e 4 *x 4 +e 5 *x 5 +e 6 *x 6 =Q e
f 1 *x 1 +f 2 *x 2 +f 3 *x 3 +f 4 *x 4 +f 5 *x 5 +f 6 *x 6 =Q f
1.3 the flow equation set determinant according to step 1.2:
D=a 1 *b 2 *c 3 *d 4 *e 5 *f 6 +a 2 *b 3 *c 4 *d 5 *e 6 *f 1 +a 3 *b 4 *c 5 *d 6 *e 1 *f 2 +a 4 *b 5 *c 6 *d 1 *e 2 *f 3 +a 5 *b 6 *c 1 *d 2 *e 3 *f 4 +a 6 *b 1 *c 2 *d 3 *e 4 *f 5 -a 6 *b 5 *c 4 *d 3 *e 2 *f 1 -a 5 *b 4 *c 3 *d 2 *e 1 *f 6 -a 4 *b 3 *c 2 *d 1 *e 6 *f 5 -a 3 *b 2 *c 1 *d 6 *e 5 *f 4 -a 2 *b 1 *c 6 *d 5 *e 4 *f 3 -a 1 *b 6 *c 5 *d 4 *e 3 *f 2
D1=Q a *b 2 *c 3 *d 4 *e 5 *f 6 +a 2 *b 3 *c 4 *d 5 *e 6 *Q f +a 3 *b 4 *c 5 *d 6 *Q e *f 2 +a 4 *b 5 *c 6 *Q d *e 2 *f 3 +a 5 *b 6 *Q c *d 2 *e 3 *f 4 +a 6 *Q b *c 2 *d 3 *e 4 *f 5 -a 6 *b 5 *c 4 *d 3 *e 2 *Q f -a 5 *b 4 *c 3 *d 2 *Q e *f 6 -a 4 *b 3 *c 2 *Q d *e 6 *f 5 -a 3 *b 2 *Q c *d 6 *e 5 *f 4 -a 2 *Q b *c 6 *d 5 *e 4 *f 3 -Q a *b 6 *c 5 *d 4 *e 3 *f 2
D2=a 1 *Q b *c 3 *d 4 *e 5 *f 6 +Q a *b 3 *c 4 *d 5 *e 6 *f 1 +a 3 *b 4 *c 5 *d 6 *e 1 *Q f +a 4 *b 5 *c 6 *d 1 *Q e *f 3 +a 5 *b 6 *c 1 *Q d *e 3 *f 4 +a 6 *b 1 *Q c *d 3 *e 4 *f 5 -a 6 *b 5 *c 4 *d 3 *Q e *f 1 -a 5 *b 4 *c 3 *Q d *e 1 *f 6 -a 4 *b 3 *Q c *d 1 *e 6 *f 5 -a 3 *Q b *c 1 *d 6 *e 5 *f 4 -Q a *b 1 *c 6 *d 5 *e 4 *f 3 -a 1 *b 6 *c 5 *d 4 *e 3 *Q f
D3=a 1 *b 2 *Q c *d 4 *e 5 *f 6 +a 2 *Q b *c 4 *d 5 *e 6 *f 1 +Q a *b 4 *c 5 *d 6 *e 1 *f 2 +a 4 *b 5 *c 6 *d 1 *e 2 *Q f +a 5 *b 6 *c 1 *d 2 *Q e *f 4 +a 6 *b 1 *c 2 *Q d *e 4 *f 5 -a 6 *b 5 *c 4 *Q d *e 2 *f 1 -a 5 *b 4 *Q c *d 2 *e 1 *f 6 -a 4 *Q b *c 2 *d 1 *e 6 *f 5 -Q a *b 2 *c 1 *d 6 *e 5 *f 4 -a 2 *b 1 *c 6 *d 5 *e 4 *Q f -a 1 *b 6 *c 5 *d 4 *Q e *f 2
D4=a 1 *b 2 *c 3 *Q d *e 5 *f 6 +a 2 *b 3 *Q c *d 5 *e 6 *f 1 +a 3 *Q b *c 5 *d 6 *e 1 *f 2 +Q a *b 5 *c 6 *d 1 *e 2 *f 3 +a 5 *b 6 *c 1 *d 2 *e 3 *Q f +a 6 *b 1 *c 2 *d 3 *Q e *f 5 -a 6 *b 5 *Q c *d 3 *e 2 *f 1 -a 5 *Q b *c 3 *d 2 *e 1 *f 6 -Q a *b 3 *c 2 *d 1 *e 6 *f 5 -a 3 *b 2 *c 1 *d 6 *e 5 *Q f -a 2 *b 1 *c 6 *d 5 *Q e *f 3 -a 1 *b 6 *c 5 *Q d *e 3 *f 2
D5=a 1 *b 2 *c 3 *d 4 *Q e *f 6 +a 2 *b 3 *c 4 *Q d *e 6 *f 1 +a 3 *b 4 *Q c *d 6 *e 1 *f 2 +a 4 *Q b *c 6 *d 1 *e 2 *f 3 +Q a *b 6 *c 1 *d 2 *e 3 *f 4 +a 6 *b 1 *c 2 *d 3 *e 4 *Q f -a 6 *Q b *c 4 *d 3 *e 2 *f 1 -Q a *b 4 *c 3 *d 2 *e 1 *f 6 -a 4 *b 3 *c 2 *d 1 *e 6 *Q f -a 3 *b 2 *c 1 *d 6 *Q e *f 4 -a 2 *b 1 *c 6 *Q d *e 4 *f 3 -a 1 *b 6 *Q c *d 4 *e 3 *f 2
D6=a 1 *b 2 *c 3 *d 4 *e 5 *Q f +a 2 *b 3 *c 4 *d 5 *Q e *f 1 +a 3 *b 4 *c 5 *Q d *e 1 *f 2 +a 4 *b 5 *Q c *d 1 *e 2 *f 3 +a 5 *Q b *c 1 *d 2 *e 3 *f 4 +Q a *b 1 *c 2 *d 3 *e 4 *f 5 -Q a *b 5 *c 4 *d 3 *e 2 *f 1 -a 5 *b 4 *c 3 *d 2 *e 1 *Q f -a 4 *b 3 *c 2 *d 1 *Q e *f 5 -a 3 *b 2 *c 1 *Q d *e 5 *f 4 -a 2 *b 1 *Q c *d 5 *e 4 *f 3 -a 1 *Q b *c 5 *d 4 *e 3 *f 2
1.4 when d=0, the system of equations is now solution-free and the cold silo raw material specifications must be checked down to produce the grading formulation.When D is not equal to 0, the flow rate of each cold storage binBy the formula->The frequency of each cold stock bin can be calculated: />Cold charge 1 bin frequency:>cold stock 2 bin frequency:cold charge 3 bin frequency:>cold charge 4 bin frequency:>cold charge 5 bin frequency:6 bin frequency of cold material:>
determining each cold material bin F i If the frequency of each cold storage bin is 0.ltoreq.F i The frequency adjustment of each cold storage bin can be realized if F exists i <0; the generation of the flash is inevitable, and the user is informed of the unavoidable flash, and the flash can be solved from the specifications of the screen, the grading and the cold stock bin, or controlled, so that excessive blocking of the flash is avoided; if F i If the yield of the bin is more than 50, the corresponding yield of the cold material bin 50HZ is increased, or other bins are opened to place materials with the same specification.
2. Flash control for hot stock bin
2.1 when F i <0, if the problem cannot be solved by starting from the specifications of the screen, the grading and the cold stock bin, the flash quantity should be controlled.
The overflow flow rate of each hot stock bin is recorded as Q First overflow j The limiting flow of the flash quantity of each hot stock bin is recorded as Q Overflow limit j I.e. Q Overflow limit a 、Q Limit b of overflow 、Q Limit c of overflow 、Q Limit d of overflow 、Q Overflow limit e 、Q Limit f of overflow Total flash limiting flow Q Overflow limit total
2.2 if the bin frequency F i Negative, then F i Take the inverse of F i+ The method comprises the steps of carrying out a first treatment on the surface of the If the frequency F i If positive, then it is marked as F i+ =0, cold flash flow is noted as x Initial overflow i
2.3 calculating the flash flow of each hot bin according to the following formula:
hot material 1 bin Q Initial overflow a =a 1 *x Initial overflow 1 +a 2 *x Primary overflow 2 +a 3 *x Initial overflow 3 +a 4 *x Initial overflow 4 +a 5 *x Initial overflow 5 +a 6 *x Initial overflow 6
Hot material 2 bin Q Initial overflow b =b 1 *x Initial overflow 1 +b 2 *x Primary overflow 2 +b 3 *x Initial overflow 3 +b 4 *x Initial overflow 4 +b 5 *x Initial overflow 5 +b 6 *x Initial overflow 6
3 bins Q of hot material Initial overflow c =c 1 *x Initial overflow 1 +c 2 *x Primary overflow 2 +c 3 *x Initial overflow 3 +c 4 *x Initial overflow 4 +c 5 *x Initial overflow 5 +c 6 *x Initial overflow 6
Hot material 4 bin Q Initial overflow d =d 1 *x Initial overflow 1 +d 2 *x Primary overflow 2 +d 3 *x Initial overflow 3 +d 4 *x Initial overflow 4 +d 5 *x Initial overflow 5 +d 6 *x Initial overflow 6
Hot material 5 bin Q Initial overflow e =e 1 *x Initial overflow 1 e 2 *x Primary overflow 2 +e 3 *x Initial overflow 3 +e 4 *x Initial overflow 4 +e 5 *x Initial overflow 5 +e 6 *x Initial overflow 6
Hot material 6 bin Q Initial overflow f =f 1 *x Initial overflow 1 +f 2 *x Primary overflow 2 +f 3 *x Initial overflow 3 +f 4 *x Initial overflow 4 +f 5 *x Initial overflow 5 +f 6 *x Initial overflow 6
Sum Q of hot material 1-6 bins Overflow of the first time =Q Initial overflow a +Q Initial overflow b +Q Initial overflow b +Q Initial overflow b +Q Initial overflow b +Q Initial overflow b
2.4 calculated flash flow Q First overflow j Flow rate Q limited by hot stock bin Overflow limit j The ratio of (2) is denoted as k First overflow j I.e.Hot material 1 bin->Hot material 2 bin->Hot material 3 bin->Hot material 4 bin->Hot material 5 bin->Hot material 6 bin->The sum of 1-6 bins of hot materials->
2.5 taking k First overflow j Maximum value of (3): k (k) Initial overflow max =max{k Initial overflow a ,k Initial overflow b ,k Initial overflow c ,k Initial overflow d ,k Initial overflow e ,k Initial overflow f };
2.6 if k Initial overflow max If the overflow of each hot bin is less than or equal to 1, indicating that the overflow of each hot bin is within an allowable limit range; if k Initial overflow max And if the flow is more than 1, the overflow of a certain hot stock bin exceeds the allowable limit range and needs to be regulated.
2.7 Total flow after adjustment is denoted as Q Total of initial heatWill Q Total heat Replacement by Q Total of initial heat Reducing the yield, adopting the calculation method of the step 1.4 to carry out secondary adjustment on the frequency of each cold stock bin, and recalculating the frequency of each material and marking the frequency as F Yi i
Frequency after cold charge 1 bin secondary adjustment:
frequency after 2 bins of cold materials are secondarily adjusted:
frequency after 3 storehouse secondary adjustment of cold charge:
frequency after 4 bin secondary adjustment of cold charge:
frequency after 5 bin secondary adjustment of cold charge:
frequency after cold charge 6 bin secondary adjustment:
2.8 after secondary adjustment, the overflow is controlled within the overflow range, and the frequency F of each cold storage bin is determined again Yi i If the frequency F of each cold stock bin Yi i The frequency adjustment of each cold storage bin can be realized if F exists Yi i If the flow rate is more than 50, the yield of the cold material bin is insufficient, and when the maximum flow rate of the cold material bin cannot be adjusted and other cold material bins cannot be adopted due to factors such as the silo, the yield is reduced.
3. Cold stock bin flow control
Whether or not k Initial overflow max Whether the value is more than 1 or less than 1, whether the flash secondary adjustment is needed, as long as F i > 50 or F Yi i More than 50, the cold material flow control can be carried out, the control method is the same, and F is adopted Yi i To be described.
3.1 frequency F after secondary adjustment for cold material bin Yi i The ratio to the highest frequency of 50HZ of the cold stock bin is denoted as k Cold i I.e.Cold charge 1 bin->Cold charge 2 bin->Cold charge 3 bin->Cold charge 4 bin->Cold charge 5 bin->Cold charge 6 bin->
3.2 taking k Cold i Maximum value of (2)
k Cold max =max{k Cold1 ,k Cold2 ,k Cold 3 ,k Cold 4 ,k Cold 5 ,k Cold 6 }
3.3 if k Cold max And if the frequency is less than or equal to 1, indicating that the frequency of each bin of the cold storage bin is within 50 HZ. If k is Cold max And if the frequency is more than 1, the frequency of a certain cold storage bin exceeds 50HZ, and the cold storage bin needs to be adjusted.
3.4 Total flow after Cold charge adjustment is denoted as Q Overflow cooling assembly
3.5Q Total of initial heat Replacement by Q Overflow cooling assembly The yield is reduced again, and the frequency of each cold stock bin is recalculated and recorded as F according to the frequency calculation method in the step 1.4 Overflow cooling i
Frequency after cold charge 1 bin is adjusted for three times:frequency after cold charge 2 bins are regulated for three times: />Frequency after 3 times of adjustment of cold charge: />Frequency after cold charge 4 bins are adjusted for three times: />Frequency after 5 bins of cold materials are regulated for three times:frequency after 6 bin three times of cold charge adjustment:
3.6F after the third adjustment Overflow cooling i As the median value in the regulation, the regulation range is denoted as ΔF i Because the vibrating screen has certain mixing rate, the grading allows certain error, and operators, at F Overflow cooling i ±ΔF i The actual frequency is marked as F Actual i Cold charge 1 bin F Practical 1 =F Overflow cooling 1 ±ΔF 1 Cold charge 2 bin F Practical 2 =F Overflow cooling 2 ±ΔF 2 3 bins of cold material F Actual 3 =F Overflow cooling 3 ±ΔF 3 4 bins of cold material F Practical 1 =F Overflowing cold 4 ±ΔF 4 5 bins of cold material F Actual 5 =F Overflowing cold 5 ±ΔF 5 6 bins of cold material F Actual 6 =F Overflow cooling 6 ±ΔF 6
4. The flow and total flow value of each cold material at the moment are obtained through calculation
4.1 Each Cold flow is denoted Q Cold display i Cold charge 1 bin flow:cold charge 2 bin flow:3 bin flow of cold charge: />Cold charge 4 bin flow:cold material 5 bin flow: />Cold material 6 bin flow:
4.2 total flow of cold charge: q (Q) Cold display i =Q Cold display 1 +Q Cold display 2 +Q Cold display 3 +Q Cold display 4 +Q Cold display 5 +Q Cold display 6
5. The flow and total flow value of each hot material at the moment are obtained through calculation
5.1 Each hot stream is designated Q Thermal display j
Hot stock 1 bin flow:
Q thermal display a =a 1 *Q Cold display 1 +a 2 *Q Cold display 2 +a 3 *Q Cold display 3 +a 4 *Q Cold display 4 +a 5 *Q Cold display 5 +a 6 *Q Cold display 6
Hot material 2 bin flow:
Q thermal display b =b 1 *Q Cold display 1 +b 2 *Q Cold display 2 +b 3 *Q Cold display 3 +b 4 *Q Cold display 4 +b 5 *Q Cold display 5 +b 6 *Q Cold display 6
3 bin flow of hot material:
Q thermal display c =c 1 *Q Cold display 1 +c 2 *Q Cold display 2 +c 3 *Q Cold display 3 +c 4 *Q Cold display 4 +c 5 *Q Cold display 5 +c 6 *Q Cold display 6
Hot material 4 bin flow:
Q thermal display d =d 1 *Q Cold display 1 +d 2 *Q Cold display 2 +d 3 *Q Cold display 3 +d 4 *Q Cold display 4 +d 5 *Q Cold display 5 +d 6 *Q Cold display 6
Hot material 5 bin flow:
Q thermal display e =e 1 *Q Cold display 1 +e 2 *Q Cold display 2 +e 3 *Q Cold display 3 +e 4 *Q Cold display 4 +e 5 *Q Cold display 5 +e 6 *Q Cold display 6
Hot material 6 bin flow:
Q thermal display f =f 1 *Q Cold display 1 +f 2 *Q Cold display 2 +f 3 *Q Cold display 3 +f 4 *Q Cold display 4 +f 5 *Q Cold display 5 +f 6 *Q Cold display 6
5.2 total flow value of hot material: q (Q) Thermal display assembly =Q Thermal display a +Q Thermal display b +Q Thermal display c +Q Thermal display d +Q Thermal display e +Q Thermal display f
6. Calculating the flash time and flash flow of each heat cooking theory
6.1 setting H j For each high-level mark point of the hot bin, when the hot bin is high, H j When the hot bin does not show high position, H is =1 j =0;
6.2 flash flow per batch is denoted as Q Overflow display j The increasing flow of the hot stock bin is recorded as Q Value-added display j At this time, the total yield of the hot materials isThe actual production flow of each hot stock bin is recorded as Q Production j ,/>
6.3Q Thermal display j And Q is equal to Production j The difference is recorded as Q Difference j ,Q Thermal display j -Q Production j =Q Difference j . When Q is Difference j When the temperature is less than or equal to 0, the hot stock bin does not generate increment, Q Value-added display j =0; when Q is Difference j When the value is more than 0, the hot stock bin can generate increment, and at the moment, Q Value-added display j =Q Difference j The maximum mass of each hot material bin capable of being filled with hot material is recorded as m Total j The time from the beginning of each hot bin to the overflow of the overflow bin is set as t j From empty to current Q in hot bin Value-added display j Change to Q Increment display j1 ,Q Increment display j2 ,……Q Value added display jn The flow duration is t respectively j1 ,t j2 ,……t jn The increment mass of the current hot stock bin internal material is recorded as m Material j :m Material j =Q Increment display j1 *t j1 +Q Increment display j2 *t j2 +Q Value added display jn *t jn Theoretical flash time
(1) Hot material 1 bin
When Q is Value-added display a When=0, the hot material 1 bin will not overflow; when Q is Value-added display a At > 0, m Material a =Q Value-added display a1 *t a1 +Q Value-added display a2 *t a2 +……Q Value added display an *t an
Hot1 bin theoretical flash time:hot material 1 bin flash flow: q (Q) Overflow display a =Q Value-added display a *H a I.e. the flash flow is shown when the hot material is at the high position of 1 bin.
(2) Hot material 2 bin
When Q is Value-added display b When the temperature is=0, the hot material 2 bin cannot overflow; when Q is Value-added display b At > 0, m Material b =Q Value-added display b1 *t b1 +Q Value-added display b2 *t b2 +……Q Value added display bn *t bn
2 bin theoretical flash time of hot material:flash flow Q of hot material 2 bin Overflow display b = Q Value-added display b *H b I.e. the flash flow is shown when the hot material is at the high position of 2 bins.
(3) Hot material 3 bin
When Q is Value-added display c When=0, the hot material 3 bin will not overflow; when Q is Value-added display c At > 0, m Material c =Q Value-added display c1 *t c1 +Q Value-added display c2 *t c2 +……Q Value-added display cn *t cn
3 storehouse reason of hot materialFlash time:flash flow Q of hot material 3 bin Spill display c=Q Value-added display c *H c I.e. the flash flow is shown when the hot material is at the high position of 3 bins.
(4) Hot material 4 bin
When Q is Value-added display d When=0, the hot material 4 bin will not overflow; when Q is Value-added display d At > 0, m Material d =Q Value-added display d1 *t d1 +Q Value-added display d2 *t d2 +……Q Value added display dn *t dn
Hot material 4 bin theoretical flash time:hot material 4 bin flash flow: q (Q) Overflow display d =Q Value-added display d *H d I.e. the flash flow is shown when the hot material is at the high position of 4 bins.
(5) Hot material 5 bin
When Q is Value-added display e When=0, the hot material 5 bin will not overflow; when Q is Value-added display e At > 0, m Material e =Q Value-added display e1 *t e1 +Q Value-added display e2 *t e2 +……Q Value-added display en *t en
Hot 5 bin theoretical flash time:flow of hot material 5 bin flash: q (Q) Overflow display e =Q Value-added display e *H e I.e. the flash flow is shown when the hot material is at the high position of 5 bins.
(6) Hot material 6 bin
When Q is Value-added display d When the temperature is=0, the hot material 6 bin cannot overflow; when Q is Value-added display f At > 0, m Material f =Q Value-added display f1 *t f1 +Q Value-added display f2 *t f2 +……Q Value-added display fn *t fn
Hot material 6 bin theoretical flash time:hot material 6 bin flash flow: q (Q) Overflow display f =Q Value-added display f *H f I.e. the flash flow is shown when the hot material is at the high position of 6 bins.
5.4 total flow of hot flash
Q Value-added display total =Q Value-added display a +Q Value-added display b +Q Value-added display c +Q Value-added display d +Q Value-added display e +Q Value-added display f
The foregoing is merely illustrative of specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention by using the design concept shall fall within the scope of the present invention.

Claims (3)

1. The aggregate production control method is characterized by comprising the following steps of:
step (1), calculating the frequency F of each cold storage bin i The method specifically comprises the following steps:
1.1, acquiring corresponding specification materials of each hot bin in each cold bin in real time, and obtaining a proportion, wherein the asphalt mixture stirring equipment comprises 6 cold bins and 6 hot bins, and the specification materials contained in each hot bin are a, b, c, d, e, f respectively; the specific method comprises the following steps: an industrial high-speed camera is arranged at the discharging position of each cold material bin, and the industrial high-speed camera acquires a real-time cold material photo of the corresponding cold material bin; then optimizing the photo by graphic software, and classifying the shape of the cold material; finally, calculating and obtaining the proportion of cold materials with various specifications in the photo through software;
1.2 establishing a flow equation set for various specifications of materials, and solving and obtaining the flow x of the ith cooling bin i The flow of 6 cold bins is denoted as x 1 、x 2 、x 3 、x 4 、x 5 、x 6 The method comprises the steps of carrying out a first treatment on the surface of the The specific method comprises the following steps: 1.21 formulaEstablishing a flow equation set of all specifications, wherein: j (j) i The weight percentage of the specification material j in the ith cold storage bin is shown as j, the value of j is between a and f, and n is the number of the cold storage bins; 1.22 solving all x according to the equation set column determinant of step 1.21 i An optimal solution;
1.3X obtained in step 1.2 i Value substitution formulaThe frequency F of each cold storage bin can be calculated i Wherein: q (Q) Cold i The yield corresponding to the highest frequency of 50HZ of the ith cold stock bin;
step (2), hot feed bin flash control, specifically includes:
2.1 when the step (1) calculates the frequency of each cold storage bin to exist F i <When 0, flash is generated, and the flash flow of each cold stock bin is marked as x Initial overflow iWill F i Take the inverse of F i+ The method comprises the steps of carrying out a first treatment on the surface of the Frequency F i If it is positive, record F i+ =0;
2.2 recording the flash flow of each hot silo as Q First overflow j The limiting flow of the flash quantity of each hot stock bin is recorded as Q Overflow limit j Total flash limiting flow Q Overflow limit total The method comprises the steps of carrying out a first treatment on the surface of the And calculating the flash flow of each hot bin according to the following formula:wherein: j (j) i The weight percentage of the specification material j in the ith cold storage bin is shown as j, the value of j is between a and f, and n is the number of the cold storage bins; sum of flash flow of all hot silos: />
2.3 calculating the flash flow rate Q First overflow j Flow rate Q limited by hot stock bin Overflow limit j Is recorded as the ratio ofk First overflow jRatio k of sum of all hot silo flash flows to sum of total flash limiting flows Overflow of the first time ,/>
2.4 taking k First overflow j Maximum value of (3): k (k) Initial overflow max =max{k Initial overflow a ,k Initial overflow b ,k Initial overflow c ,k Initial overflow d ,k Initial overflow e ,k Initial overflow f };
2.5 when k Initial overflow max If the flow is more than 1, the overflow of a certain hot stock bin exceeds the allowable limit range and needs to be regulated; rated production of the complete plant is designated as Q Total heat The adjusted total flow is denoted as Q Total of initial heatThe frequency of each cold storage bin is secondarily adjusted, and the frequency of each cold storage bin is recalculated and recorded as F Yi i ,/>
2.6 controlling the flash range after the secondary adjustment, and judging the frequency F of each cold material bin again Yi i If F Yi i The frequency adjustment of each cold storage bin can be realized if the temperature is less than or equal to 50; if F Yi i > 50, which indicates that the cold stock bin yield is insufficient, the corresponding yield of the cold stock bin 50HZ should be increased, and when the maximum flow of the cold stock bin cannot be adjusted, the yield should be reduced.
2. A method for controlling the production of aggregate as claimed in claim 1, further comprising: step (3), cold material bin flow control: 3.1 the secondary adjustment of the frequency F of the cold material bin Yi i The ratio to the highest frequency of 50HZ of the cold stock bin is denoted as k Cold i I.e.Taking k Cold i Maximum value of (3): k (k) Cold max =max{k Cold1 ,k Cold2 ,k Cold 3 ,k Cold 4 ,k Cold 5 ,k Cold 6 -a };3.2 when k Cold max When the temperature is more than 1, the frequency of a certain cold stock bin exceeds 50HZ, the adjustment is needed, and the total flow after the adjustment of the cold stock is recorded as Q Overflow cooling assembly
3.3 recalculating the frequency of the ith Cold storage bin as F Overflow cooling i3.4F after three adjustments Overflow cooling i As the median value in the regulation, the regulation range is denoted as ΔF i At F Overflow cooling i ±ΔF i The actual frequency is marked as F Actual i ,F Actual i =F Overflow cooling i ±ΔF i
3. A method for controlling the production of aggregate as claimed in claim 2, wherein: the method also comprises the following specific steps of calculating the flash time and the flash flow of each heat cooking theory:
1) Set H j For each high-level mark point of the hot bin, when the hot bin is high, H j When the hot bin does not show high position, H is =1 j =0;
2) The flash flow of each material was designated as Q Overflow display j The increasing flow of the hot stock bin is recorded as Q Value-added display j At this time, the total yield of the hot materials isThe actual production flow of each hot stock bin is recorded as Q Production j ,/>
3) Each hot material flow is denoted as Q Thermal display j The actual production flow of each hot stock bin is recorded as Q Production j ,Q Thermal display j And Q is equal to Production j The difference is recorded as Q Difference j ,Q Thermal display j -Q Production j =Q Difference j The method comprises the steps of carrying out a first treatment on the surface of the When Q is Difference j When the temperature is less than or equal to 0, the hot stock bin does not generate increment, Q Value-added display j =0; when Q is Difference j When the value is more than 0, the hot stock bin can generate increment, and at the moment, Q Value-added display j =Q Difference j The maximum mass of each hot material bin capable of being filled with hot material is recorded as m Total j The time from the beginning of each hot bin to the overflow of the overflow bin is set as t j From empty to current Q in hot bin Value-added display j Change to Q Increment display j1 ,Q Value-added display j 2,……Q Value added display jn The flow duration is t respectively j1 ,t j2 ,……t jn The increment mass of the current hot stock bin internal material is recorded as m Material j ,m Material j =Q Increment display j1 *t j1 +Q Increment display j2 *t j2 +Q Value added display jn *t jn Theoretical flash time
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US4089509A (en) * 1977-07-05 1978-05-16 Seltec Corporation Composition control system for an asphalt plant
JP2000309812A (en) * 1999-04-22 2000-11-07 Nkk Corp Method for controlling pulverized fine coal level in coal bin in pulverized fine coal blowing equipment in blast furnace
CN109554992A (en) * 2018-11-12 2019-04-02 福建铁拓机械有限公司 A kind of cold burden storehouse Automatic adjustment method
CN112921748A (en) * 2021-01-29 2021-06-08 山东省交通科学研究院 Production mixing ratio debugging method for dynamic balance of intermittent asphalt mixing station
JP2021176696A (en) * 2020-05-06 2021-11-11 許昌徳通振動攪拌科技股▲ふん▼有限公司 Control method and control device for mixing plant, and mixing plant
CN115262327A (en) * 2022-09-27 2022-11-01 福建省铁拓机械股份有限公司 Automatic adjusting system and adjusting method for asphalt mixing station flash
CN115595853A (en) * 2022-12-16 2023-01-13 福建省铁拓机械股份有限公司(Cn) Aggregate control system and method of continuous asphalt mixture stirring equipment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089509A (en) * 1977-07-05 1978-05-16 Seltec Corporation Composition control system for an asphalt plant
JP2000309812A (en) * 1999-04-22 2000-11-07 Nkk Corp Method for controlling pulverized fine coal level in coal bin in pulverized fine coal blowing equipment in blast furnace
CN109554992A (en) * 2018-11-12 2019-04-02 福建铁拓机械有限公司 A kind of cold burden storehouse Automatic adjustment method
JP2021176696A (en) * 2020-05-06 2021-11-11 許昌徳通振動攪拌科技股▲ふん▼有限公司 Control method and control device for mixing plant, and mixing plant
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