Optimization control method for grind grading process

A process optimization and control method technology, applied in the direction of adaptive control, general control system, control/adjustment system, etc., can solve the problems of low production efficiency, high energy consumption, uneven product quality, etc., and achieve the reduction of labor intensity, Low energy consumption and the effect of improving enterprise management level

Inactive Publication Date: 2008-08-20
徐宝平
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the grinding and grading process is basically all produced by human judgment and manual operation, which has the defects of high energy consumption, uneven product quality and low production efficiency.

Method used

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  • Optimization control method for grind grading process
  • Optimization control method for grind grading process
  • Optimization control method for grind grading process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0071] The grinding machine of an iron ore dressing plant, the specification of the grinding machine is φ3200×4500, the cylinder has a constant speed of 18.5r / min, the loading capacity of steel balls is 73T, the rated power is 1000kw, the rated current is 38A, the set output is 52t / h, the choice of feeding JGC-40I belt weighing feeder, the maximum feeding rate is 100t / h, the screw classifier model is FG-7, the screw speed is 3.5r / min, the sand return rate is 100-445t / h, and the overflow rate is 31- 165t / h.

[0072] The control system selects S7-300PLC, and the host computer selects industrial control computer.

[0073] Firstly, the advanced control module obtains the historical data and real-time data of the grinding and grading process. The data includes: feeding amount (1-100t / h), motor current (0-50A), motor power (0-1200kw), vibration measuring points (4 -20mA), noise measuring point (4-20mA), sand-returning water flow rate (0-300t / h), sand-returning amount (0-280t / h), sp...

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Abstract

The invention discloses an optimal control method for grinding and grading mineral powder, which is characterized in that: the grinding load and grinding concentration is obtained by sampling grinding-grading process signal, with the help of the advanced control and through testing the state in the grinder; the optimal grinding load, the optimal sand-returning ratio, the optimal grinding concentration and the optimal overflow concentration are obtained through the grinding load optimization, the sand-returning ratio optimization, the grinding concentration optimization and the overflow concentration optimization; the feeding quantity is obtained through the control algorithm of the feeding quantity ; the sand-returning water volume is obtained through the control algorithm of the sand-returning water volume; the discharging water volume is obtained through the control algorithm of the discharging water volume. The optimal control method has advantages that: the global optimization to the grinding-grading process is realized; and meanwhile the diagnosis is done to reveal the fault of the grinding-grading process; the appraisal and analysis is executed in the grinding-grading process; reasonable advice is come out; continuous, stable, safe and economic running is ensured; so the method is widely used in the grinding-grading process and similar wet milling process in other industry crafts.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to an optimization control method for the grinding and grading process. Background technique [0002] The grinding and grading process is a key link in the beneficiation production process, which directly affects the quality and recovery rate of concentrate products. Controlling the grinding process is of great significance for saving energy and reducing consumption, and improving the quality and output of final products. [0003] Grinding machine is the equipment that consumes the most electric energy in the concentrator. More than 60% of the cost of grinding and grading operations is energy consumption, because the efficiency of grinding and grading should be considered when evaluating the working quality of the ore grinding machine. [0004] At present, the grinding and grading process is basically all produced by human judgment and manual operation, which has the defec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C25/00G05B13/04G05B23/02
Inventor 张相利陈伟
Owner 徐宝平
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