SU1080872A1 - Method of controlling the process of flotation - Google Patents

Abstract

A process for controlling the flotation process with circulating streams, based on the distribution of the circulating process streams by individual operations is proportional but floatable separation, characterized in that, in order to improve the accuracy and speed of management, the content of the useful component in the tailings, feed and concentrate is measured , the ratio of the contents of the useful component in the tails and feed is determined, and the circulating streams are distributed in separate operations and in the head of the process is proportional to According to the relation found, a depressant reagent is fed into the circulating stream supplied to a separate operation in an amount proportional to the content of the useful component in the concentrate (P and in the initial feed.

Description

The invention relates to the management of the flotation process. The topic will be used in the development and implementation of automated flotation control systems, technological processes at the concentrators of ferrous and ferrous metallurgy, the industry of building materials, the industry of mineral fertilizers. There is a known method of controlling the flotation process, which includes changing the circulating loads according to the measured amount of solid in them by simultaneous and unidirectional exposure to Cl.3. The disadvantage of the method is that the control actions do not depend on the technological parameters and, therefore, do not provide optimal indicators. A known method for controlling the process of flotation with circulating streams is based on the distribution of the circulating streams of the process in separate operations proportional to the floatability of the separation L23. The disadvantage of the known method is the need to determine the optimal flotation separation, for which it is necessary to conduct {flotometric analysis of the initial flotation feed. A flotation analysis is associated with a number of technical difficulties. In particular, it is necessary to determine the dependence of the extraction of the total solid and the extraction of the useful component on time. The state-of-the-art of measuring and measuring; NIKI does not allow the definition of these dependencies to be quite cheap and simple, which leads to a decrease in the efficiency and accuracy of control. The purpose of the invention is to improve the accuracy and efficiency of control. The goal is achieved by the fact that according to the process of flotation control with circulating streams, based on the distribution of circulating process streams in individual operations in proportion to the flooding of separation, the content of the useful component in the tailings of the feed and the concentrate is determined, the ratio of the contents of the useful component in dump tails and power, and circulating flows are distributed on separate operations and in the head of the process is proportional to the ratio found, in the circulating A lirade flow, supplied.;. in a separate operation, serves a depressant agent in an amount proportional to the content of the useful component in the concentrate and in the original diet. The drawing shows the block diagram of the device. According to the proposed method, the circulation flow of the tailings of the second purification flotation is divided into two parts and one of them is directed to the head of the process, and the other in a separate operation - to the first purification flotation. At the separation point, a pneumatic type regulator 1 is installed, controlling flow portions. Sensors for chemical analysis — calligraphers 2–4 — are installed at the sampling points for the initial flotation feed, tailings and finished concentrate. The separation point of the CMC reagent, to which the reagent supply regulator 5 is installed, is brought to the separation point. The information from calligraphers 2-4 is fed to the input of the digital computer 6, from where the tasks for regulator 1 of the ratio of parts of the flow of tailings of the second cleaner flotation and regulator 5 of the CMC feed are made. An example. Assume that at the first moment the entire tailings flow of the second cleaner cell flotation enters the process head. The potassium chloride content in the feed is 25%, in the tailings 5%, in the finished concentrate 89%, the recovery is 84.7%. The tailings flow of the second preheath flotation is separated, a part of the flow is directed to the first cross-cleaning flotation, and CMC reagent is fed to this part of the stream. At first, 0.2 of the total flow enters the first chowder flotation, while the content of potassium chloride in the tailings is 4.5%, in the initial feed - 24%. However, this results in a reduction in the quality of the finished concentrate to 86%. Therefore, in the next control step, the supply of CMC to the part of the stream of tailings of the second cleaner cell is increased. This also increases the flow rate of the tailings of the second cleaner cell flotation to 0.5. The reagent consumption is 10 g / t of the original ore. In the case of an increase in the ratio of potassium chloride content in the tailings and in the initial regulator 1, it produces reverse changes. In this case, as a result of the adjustment, the content of chloride .. potassium in the tailings is 4.2%, in the initial feed - 24%, in the finished concentrate - 90.2%, and the extracting was 86.5%. The use of the invention makes it possible to increase extraction by 1.8% by reducing the loss of potassium chloride, tails.

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Claims (1)

METHOD OF CONTROL OF THE FLOTATION PROCESS with circulating flows, based on the distribution of the circulating process flows for separate operations in proportion to the separation flotation, characterized in that, in order to increase the accuracy and efficiency of control, the useful component in the tailings, feed and concentrate is measured, the ratio of contents is determined useful component in dumps, tails and feeds, and circulating flows are distributed according to separate operations and proportionally to the head of the process ennomu respect, the circulating flow, fed into a single operation, is fed-depressant reagent in proportion to the content of the useful component in the concentrate and in the original food. OIOS