SU961787A1 - Flotation machine - Google Patents

Description

(54) FLOTATION MACHINE

one

The invention relates to the enrichment of minerals and can be used in the processing plants of ferrous and nonferrous metallurgy, in the coal and mining industries, in particular, in the flotation of potash ores.

The ejector flotation machine is known, including the chamber, the loading and unloading devices and the ejector-disperser located inside the chamber 1.

However, this flotation machine does not ensure the completeness of extraction of the floatable mineral due to the fact that the pulp air mixture is unevenly distributed throughout the chamber volume.

Closest to the proposed technical dryness and the achieved result is a flotation machine containing a chamber, loading and unloading devices, a circulation pump with an air intake pipe and a discharge pipe with suction pipes located below the level of the foam layer, aerator 2.

This flotation machine also has a low extraction of the floatable mineral. Uj due to the fact that part of the pulp located at the walls of the chamber is insufficiently aerated, and coarse-grained part of the pulp

5, this occurs along the walls of the chamber and is not amenable to flotation development.

The aim of the invention is to increase the recovery of the mineral to be floated by uniform aeration of the pulp, mixing Q with it throughout the entire volume of the chamber.

This goal is achieved by the fact that the aerator in the flotation machine is designed as a collector with parallel rows of ejectors, while the ejectors of the middle row are set at an angle of 45-75 ° to the plane of the bottom of the chamber in the direction of discharge, and the ejectors of the extreme rows are directed to the matching lines groom bottom ka.mery with its side walls.

The flotation machine is made in a series of cameras connected in series.

Such an embodiment of the aerator contributes to the uniform aeration of the pulp throughout the chamber, prevents the flooding material from the bottom corner zones of the chamber from sludge flooding, improves the discharge of the chamber product.

FIG. 1 shows the flotation machine, general view; in fig. 2 - omna from chambers, cross section.

The flotation machine consists of two or more filler chambers 1 mounted on a common frame 2, a loading device 3 mounted on the first chamber 1, and a discharge device 4 mounted on the last chamber. Each chamber is a rectangular casing 5 with foam collectors 6, connected to lateral inclined walls 7 and a bottom 8. Each chamber has a circulating system consisting of a circulation pump 9 with an air intake pipe 10 and a discharge pipe 11. Circulating the pump 9 in its lower part is connected to a nozzle 12 having suction nozzles 13 for collecting pulp from the volume of chamber 1 near its side walls: where there are downward flows of clarified pulp. The suction inlets 13 of the circulation system are located below the level of the foam layer. The flotation screen aerator is made in the form of an air distribution manifold 14 with riial parallel rows of ejectors 15, the middle row ejectors are installed at an angle of 45-75 ° to the plane of the chamber bottom in the discharge direction, and the ejectors of the extreme rows are directed to the chamber bottom lines with its side walls. The ejectors 15 and the discharge pipe 11 are connected through the pulprodistributive manifold 16.

Flotation machine works as follows.

The initial pulp treated with reagents is fed into the loading device 3, from where the pulp passes into chamber 1. When the chamber 1 is filled with pulp to the level of the ends of the suction nozzles 13, the circulation pump 9 is turned on. A part of the clarified pulp from chamber 1 enters the circulation system and circulates inside the chamber volume 1, the passage through the suction nozzles 13, the discharge pipe 11, the pulp distribution manifold 16, the ejectors 15 and again enters the chamber 1. When the pulp flows through the ejector

15, air entering the atmosphere from the atmosphere into the pulp volume is sucked in via the pipeline 10 into the atmosphere, and as a result, it is aerated. Floated hydrophobic material - enters

on the surface of the pulp, forming a layer of mineralized foam, which flows into the collecting chute 6. The hydrophilic material of the pulp is deposited on the bottom 8 of the chamber 1 and moves to the discharge device 4 under the action of jets of pulp directed at an angle of 45-75 ° to the bottom 8 of the chamber 1 in the direction unloading. The pulp flow, which leaves the ejectors of the 15 extreme rows, is directed to the lines of interface between the bottom of the chamber and its side walls, which ensures efficient study of the pulp in the bottom zone and prevents silting of the chamber with a solid phase.

. The flotation pattern during the flotation of clay from potash ore allows to increase the extraction of clay by 5-20% and reduce the loss of KC1 with clay product by 2-60 / 0.

Claims (2)

1. A flotation machine containing a chamber, loading and unloading devices, a circulation pump with an air intake pipe and a discharge pipe with suction nozzles located below the level of the foam layer, the aerator, characterized in that, in order to increase the recovery of the floating mineral, the aerator is made in collector with parallel rows of ejectors, while the ejectors of the middle row are set at an angle of 45-75 ° to the plane of the bottom of the chamber in the direction of discharge, and the ejectors of the extreme rows are directed to line of the camera bottom with its 0 side walls. 2. A mask according to claim i, characterized in that it is made of a series of series-connected chambers. Sources of information taken into account in the examination of 5 1. USSR Copyright Certificate № 150445, cl. B 03 D 1/14, 1961. 2. Nebera V.P., Sobolev D.S. The state and main directions of flotation development abroad. M., “Nedra, 1968, p. 122 (prototype). §