SU778795A1 - Method of automatic control of wet disintegrating process - Google Patents

Description

   .

The invention relates to the automated process of grinding raw materials in drum mills operating in closed cycles with spiral classifiers at the beneficiation plants of nonferrous and ferrous metallurgy .-,.

There is a known method of controlling single stage grinding cycles based on the use of the ratio of its power supply, grinding noise

tsy and size out of the mill. product u ... 5

However, the list does not provide the necessary quality control.

The method of automatic control of the wet grinding process is known, including measuring 20 and stacking the sound parameter, measuring and controlling the flow of ore and water, to the mill, measuring the flow of solid and the content of the control class in the discharge of the class 25 classifier on the control class and the introduction of the correction and the system, the theme of the stabilization of the 1 st parameter 23.

It provides for the introduction of corrective actions on the stabilized parameters from the circulating load sensor in the grinding unit, which is used as a meter for the power consumption of the electric motor of the classifier.

However, the circulating load can serve as an indirect parameter reflecting the grindability of the original ore, as much as the change in the size, solidity and physicomechanical properties of the crushed material causes its change. The imperfection of the sensor used, as well as the difficulty of separating the useful signal from the disturbance, is greater inertia the facility does not allow timely and sufficiently accurate introduction of a regulating effect, based on changes in the circulating load.

The purpose of the invention is to improve the performance of the finished product.

The goal is achieved in that according to the method of automatic control of the wet and melt process, key measurement and stabilization, measurement and control of ore and water consumption in the mill, flow measurement of the solid and the content of the control class in the classifier discharge, stabilization of the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, the grading, and the grading class. correction in the stabilization system sound parameter, additionally determine the grindability

ores by calculating the ratio of the productivity of the finished product, equal to the product of the solid consumption in the discharge of the classifier for the content of the control class in it, to the ore consumption value, taking into account the delay time, a. Correction introduction. in the stabilization system of the sound parameter, the following is carried out: in a proportional dependence on the calculated ore millability: at an increase in the millability, increase the loading of the mill with ore, and reduce the amount of ore. . . -, The drawing shows a diagram of the device that implements the proposal. way .. ,, ,: ,,. ::; ,; The device includes cvtcieMy Stabil-Ly, zation z.gruzki mill on zvuko-. The metric parameter that contains the sound sensor 1; . device 2, regulator 3., additional mechanism 4, ischeychtsy.

ore flow rate, flow from the bunker

 meipjitsu b, yistem sos tIo yeyiy.

 a-water, soder; Secondary ore sludge weight 7

Pribor8 consumption: VUDy, sensor 9 ipac-. water stroke, secondary device 10 times of water, controller 11 of the solar, actuator 12, which changes the flow rate of water in the system, the stabilization system of the classifier, according to the Control class, which contains the sensor 13 size, secondary device 14, controller 15, actuator 16, changing the flow of water into the classifier. 17, a system for controlling the flow rate of a classifier solid in the discharge, which contains a solid flow sensor 18 and a secondary device 19, a calculating unit 20 for which signals from the secondary device 4, recording the size of the classifier drain, from a bluter device 19 / registrating flow

firmly in with l yvё to l ace of the qualifier.

Control is carried out as follows.

 - The Uyryayayt by the flow parameter of the wind parameter does not provide maximum performance, since the given noise of the mill, on which the regulator is tuned, corresponds to ore, which has 6 specific physical properties and grain size distribution. If they change, then the level of noise corresponding to the maximum performance should be different.

Therefore, the ratio of the performance of the finished product to the performance of the initial power in the computing unit 20 is determined and a correction is introduced for this value into the load controller 3 of the sound-stabilization system. In the same block take into account the delay time. . .

During the operation of the stabilization system of the sound parameter 1-2-3-4, the stabilization system of the particle size of the discharge classifier 13-14-15-16 and the system of the ratio of ore-water 7-8-9-10-11-12, the change in the ratio of performance of the finished product to the performance of the original feed fixes the change in the ore grindability upwards, and from block 20 to the regulator 3 a correction is made to increase the productivity of the original feed rate and vice versa.

Claims (2)

1. USSR author's certificate number 154470, cl. B 02 C 25/00, 1963. 2. Authors certificate of the USSR 280218, cl. in 02 C 25/00, 1967. Ooffet