Method and device for controlling pulp concentration in ore grinding classification course

Abstract

The invention discloses a method for controlling pulp concentration in an ore grinding classification course. The method comprises the steps of detecting a current concentration value of a classification device; calculating a changeable value of the current concentration value according to the difference between the current concentration value and a previous concentration value; analyzing the value range of the current concentration value and the value range of the changeable value of the current concentration value; increasing the water addition amount of a pump sump in response to the condition that the current concentration value is larger than an upper limit value of a reasonable concentration value as well as the changeable value of the current concentration value is larger than a first changeable threshold value; refusing to increase the water addition amount of the pump sump in response to the condition that the current concentration value is larger than the upper limit value of the reasonable concentration value as well as the changeable value of the current concentration value is smaller than the first changeable threshold value; decreasing the water addition amount of the pump sump in response to the condition that the current concentration value is smaller than a lower limit value of the reasonable concentration value as well as the changeable value of the current concentration value is smaller than a second changeable threshold value; refusing to decrease the water addition amount of the pump sump in response to the condition that the current concentration value is smaller than the lower limit value of the reasonable concentration value as well as the changeable value of the current concentration value is larger than the second changeable threshold value. In addition, the invention further provides a device for controlling the pulp concentration in the ore grinding classification course.

Description

technical field [0001] The application relates to the field of mineral processing process control, in particular to a method and device for controlling pulp concentration in the grinding and grading process. Background technique [0002] In the production process of ore smelting, since the raw ore obtained from mining cannot meet the smelting requirements, it is necessary to process the raw ore first to obtain concentrates that meet the smelting requirements, and then use them in the smelting process. The beneficiation operation mainly includes crushing and screening of raw ore, grinding and grading, sorting, concentrate dehydration and other links. Among them, the grinding process is to crush the crushed ore to a suitable particle size, and provide the crushed minerals to the sorting process. During the grinding process, since the ore is crushed, the effective mineral components can be dissociated from the gangue, and different effective mineral components can be dissociat...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by this application is to provide a method and device for controlling the pulp concentration in the grinding and grading process, so as to solve the difference between the actual pulp concentration and the reference pulp concentration based on the real-time classification device in the prior art. The technical problem of excessive adjustment of pulp concentration and large fluctuations in the classification device caused by adjusting the amount of water added to the semi-autogenous mill

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