SU1465125A1 - Hydrocyclone - Google Patents

Abstract

The invention relates to the beneficiation of minerals and can be used in the mining and processing industry for the classification of crushed ores. The purpose of the invention is to increase productivity. A hydrocyclone includes a body consisting of prismatic and pyramidal parts, feeding and sand-filled, drain pipe 5. In this case, the prismatic part of the body is rotated relative to the pyramidal angle of 180 ° / n, where n is the number of sides of the prism. The pulp is fed under pressure through the feed nozzle into the prismatic part of the hydrocyclone and is twisted. Large particles are discharged through a sand nozzle, small particles through a discharge pipe. The presence of faces in the housing allows for increased separation efficiency due to the elutriation of the condensed product in them. Rotation of the prismatic part of the body relative to the pyramid will allow a 20–30% increase in the overall performance of the apparatus while maintaining the separation efficiency. 1 tab., 4 Il. with (L

Description

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The invention relates to the mining and processing industry and can be used to classify finely divided materials for the beneficiation of ores.

The purpose of the invention is to increase productivity.

FIG. Figure 1 shows a hydrocyclone, which is a combination of a quadrangular prism and a pyramid (the square is inscribed in a square); in fig. 2 - the same, top view; in fig. 3 - a hydrocyclone in the form of a hexagonal prism and the corresponding pyramid (the contour of the base of the prism is not inscribed in the contour of the base of the pyramid); in fig. 4 - the same, top view.

A hydrocyclone includes a body consisting of a prismatic 1 and a pyramidal 2 parts, supplying 3 and sand 4 nozzles and a drain pipe 5. The prismatic part of the body is rotated relative to the pyramidal angle of 180 ° / n, where n is the number of sides of the prism. At the hydrocyclone according to the variant shown in FIG. 1 and 2, the bases of the prism lie on the sides of the base of the pyramid (the square is inscribed in a square), i.e. the condition is fulfilled: the angle of rotation is 180 ° / 4 45 °. At the hydrocyclone according to the variant shown in FIG. 3 and 4, besides the rotation of the body parts relative to each other at an angle of 180 ° / 6 30 °, the contour of the base of the prism is enclosed within the contour of the base of the pyramid. Thanks to this technical solution, the base area of the pyramidal part of the body of the hydrocyclone will be greater than that of the prize.

Hydrocyclone works as follows.

Through the feed nozzle 3, under the pressure of the hydrocyclone, pulp is fed under pressure due to the tangential position 4: O SL

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cottage and central unloading acquires a rotational motion. Under the action of centrifugal force, larger and heavier grains are dropped to the walls of the hydrocyclone body, slide down and unload through the sand nozzle 4. Small and light sludge particles are removed from the hydrocyclone through the drain pipe 5. As the prismatic part of the hydrocyclone body is rotated relative to the pyramidal At an angle of 180 ° / n and the area of its base, the massive base areas of the pyramidal suit, the pulp flow, in addition to spiraling in a plane close to the horizontal, acquires an additional component of the velocity and in the vertical plane, i.e., the proposed construction of a hydrocyclone of material circulation in its cavity imparts a new specific property: AT | -OLO pulp flow attack to the edges of the pyramidal part of the body decreases, which leads to a decrease in the hydraulic resistance of the apparatus and to an increase in its performance .

The table shows the results of the calculation of the coefficient of hydraulic resistance (e) for various variants of hydrocyclone apparatuses.

As can be seen from the table, the rotation of the prismatic part relative to the pyramid at an angle of 180 ° / p reduces the hydraulic resistance of the hydrocyclone, which leads to an increase in the overall performance of the device.

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The number of faces at the proposed hydrocyclone is selected depending on the granulometric composition of the crushed ore, its density, mineral composition and other factors. For example, for the classification of coarse-grained material, it is advisable to use a hydrocyclone with more than 10 faces, for a fine-grained material - less than 10. In addition, in some cases, when classifying dense and coarse-grained pulps, the number of faces of the prismatic part can be increased compared to the pyramidal one.

Thus, the proposed hydrocyclone performance will be 20- 30% higher than that of the apparatus, which can be constructed on the basis of the prototype. Compared to commercially available cylindrical hydrocyclones, the proposed hydrocyclone provides a higher degree of particle size separation while maintaining its productivity at the cylindrical level.

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Claims (1)

Invention Formula A hydrocyclone containing a prismatic pyramidal body, supplying and sanding nozzles, a drain pipe, characterized in that, in order to increase productivity, the prismatic part of the body is rotated relative to the pyramidal angle of 180 ° / n, where n is the number of sides of the prism. Parallel arrangement of the sides of the bases of the prismatic and pyramidal parts1, 000,500,300,19 The prismatic part is rotated by about ° C relative to the pyramid 0.30 0.04 0.08 O 05srig. 2 rtvFig. 3