SU628954A1 - Method of controlling a flotation-disintegration cycle - Google Patents

Description

The invention relates to the enrichment of minerals and is intended to control the flotation and grinding cycle. There is a known method for controlling the process floatation, which includes the operation of classifying a frothy product by size C13. There is also known a method for controlling the flotation-grinding cycle, including the control of the size of the grinding, and comparison with the set value C23. The known methods do not allow obtaining high and stable technological indicators of enrichment in the process of ore processing with variable impregnation, since at present, in enrichment of ores, the particle size of the grinding product or is stabilized by means of density stabilization systems, or coarseness of the grinding product. The purpose of the invention is to maintain the required grinding size when processing ore with variable impregnation. This is achieved by sampling the frothy product of the initial chambers of the flosshash class according to a given particle size, determining the ratio of the number of large class to small and depending on the size the ratio found is proportional to the size of the ore grinding. The magnitude of the calculated ratio at a known grinding size reflects the degree of mineral expansion of the mineral component. Thus, for example, when ore is mined with a smaller impregnation, the amount of minerals in the pulp will decrease, which will lead to a decrease in the quantities of a large class in the froth product. This, in turn, will lead to a decrease in the calculated ratio of the number of large class to the number of small class foam product m. a team will be formed to reduce the size of the discharge classifier. Conversely, when processing more large-scale ore, the computed

The ratio lost will increase and a command will be formed to increase the size of the classifier drain.

Each size of impregnation requires a well-defined, optimum size of grinding, which, when

This corresponds to the well-defined value of the ratio of the number of large

class to the number of small class of foam product.

The change in the size of the drain of the classifier is carried out, in the direction, approximating the calculated value relative to the optimum for the given size of grinding,

If the impregnation of the useful component does not change, the equality of these relations will be achieved and the value of the size of the ground size that is established will be optimal to give this impregnation of useful minerals.

The dependence of the minimum size of grinding, and the corresponding ratio of the number of kriegs of the trained foam product classes, as well as the size of the limiting size of the partial classification, is determined on the basis of a study of a particular industrial process.

SUMMARY OF THE INVENTION

 The particle size and size of the classifier drain is monitored by a grain size sensor 1. The presented sample of the foamy product of the initial & amer flotation is subjected to sieving (classification) into two products by a given size of parts in device 2. The number of products obtained is determined by sensors 3 and 4. The signal from these sensors is fed to the computing device 5, where the signal proportional to the ratio of the number of a large class to the quantity | Mepky. The signal from the device 5 is fed to the controller 6, which by means of the actuator 7 controls the water supply to the classifier, thereby changing the crookedness of the mexican product. In addition, the regulator 6 receives a signal proportional to

rational optimal value of the controlled ratio of the large class to the small amount for a given grinding size, formed in the functional unit 8 depending on the signal from the compactness sensor 1. In the measuring unit 6, the signals from the blocks are compared; and 8. With an increase in the calculated value of the controlled ratio in comparison with the optimal value for a given particle size. The controller works in the direction of increasing the particle size of the classifier drain, and vice versa, thereby driving it to the optimum value.

The proposed method will improve the technological indicators of enrichment, noq - the regulation of the grinding size is made taking into account the change in the dissemination of useful minerals recognized by the classification results according to a given particle size of a sample of the flotation foam product and known grinding size.

Purchasing formula

The method of controlling the flotation-grinding cycle, including control of the grinding size and comparison with a given value, characterized in that, in order to maintain the required grinding size when processing ore with variable impregnation, the sample of the frothy product of the initial flotation cells is classified by a given particle size The ratio of the amount of the large class to the amount of the fine and depending on the value of the ratio found changes proportionally the size of the ore grinding.

Sources of information taken into account during (examination:

1, US patent M 325881,. cl. 1966.

2, USSR Copyright Certificate Jv 161369, class, GrOS B 13/00, 1964,

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