Ore grinding machine control method and device

Abstract

The embodiment of the invention provides an ore grinding machine control method and device. The method comprises the following steps: acquiring current power R of an ore grinding machine; determining the relation between the current power R and Rmid-delta R as well as Rmid+delta R, wherein Rmid is a middle value of a reasonable power range of the ore grinding machine, delta R is an allowable fluctuation quantity with Rmid as the center, Rmid is equal to Rmax-delta R, and Rmax is the maximum threshold of the power of the ore grinding machine; when R is less than Rmid-delta R, increasing the feeding amount of the ore grinding machine; when R is greater than Rmid+delta R, reducing the feeding amount of the ore grinding machine; and when Rmid-delta R is less than or equal to R and R is less than or equal to Rmid+delta R, finely adjusting the feeding amount of the ore grinding machine according to a change tendency of the power of the ore grinding machine and a preset strategy. According to the ore grinding machine control method and device, real-time monitoring is carried out on the important parameter, namely the power of the ore grinding machine, rough adjustment or fine adjustment of the load (the feeding amount) of the ore grinding machine is carried out so that the ore grinding machine can work under the optimal state all the time, the electric energy waste caused by low-load operation does not occur, material stacking caused by overload does not occur, and therefore the production process can run continuously, stably and efficiently.

Description

technical field [0001] The invention relates to metallurgical technology, in particular to a method and device for controlling an ore grinding machine. Background technique [0002] The processing of ores is often the basis of the metallurgical industry. Except for a few rich ores rich in useful minerals, the vast majority of ores are lean ores containing a large number of gangues. Due to the low content of useful components and complex mineral composition of these lean ores, if they are directly used for smelting and extracting metals, the energy consumption will be high and the production cost will be high. The content of minerals meets the requirements of smelting. The process of beneficiation mainly includes crushing and screening of raw ore, grinding and grading, sorting, concentrate dehydration and other links, among which grinding operation is a key process to provide sorting raw materials. [0003] The grinding process is mainly to crush the crushed ore to a suita...

AI Technical Summary

Problems solved by technology

After the material enters the grinding machine (also referred to as the grinding machine), when the amount of material (or processing capacity, feed volume) is small, the grinding machine is always in low-load operation, the efficiency is low, and electric energy is wasted. Increased cost; and when the amount of material is too large, due to the overload of the grinding machine and the limited processing capacity, there will be a phenomenon of "bulging belly" (that is, all materials are accumulated in the grinding machine barrel and cannot be discharged from the body), thus affecting Production, in severe cases, it needs to be shut down for cleaning

[0004] In the process of realizing the present invention, the inventor found that in the prior art, the judgment of the load / processing capacity of the grinding machine basically depends on the experience of the operator. However, due to large errors in human judgment, it is impossible to respond in time. It is even more unpredictable, so the control of the load of the grinding machine is relatively passive, and sometimes there may even be consequences of stopping production and stopping work when it is too late to deal with the belly of the grinding machine.

In the prior art, there is no better way to control the processing capacity of the grinding machine more accurately, so that the grinding machine neither wastes power nor overloads

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