SU1349798A1 - Apparatus for preparing pulp for flotation - Google Patents

Abstract

The invention relates to the field of mineral processing and m. used in the flotation of ores of non-ferrous and ferrous metals, as well as in the chemical, coal and other industrial sectors. The purpose of the invention is to increase the efficiency of processing the pulp due to the intensive charging of mineral grains. The device includes a cylindrical body (K) 1 with inlet 2 and outlet 3 nozzles (P) and CL I; D 00

Description

installed in K 1 spiral worker 4 and axial auxiliary 5 electrodes (E) with current leads 6-8 at the ends. Spiral E 4 is made as a base facing the P 2 hemispheres of coils of elastic material located close to each other. At the same time, E A in the horizontal projection is made overlapping the cross section K 1 and is installed between O 5 and P 3 with the ability to make elastic oscillations in the direction pulp movements in perpendicular directions and, like E 5, the twist1

The invention relates to the field of mineral processing and can be used in the flotation of nonferrous and ferrous ores, as well as in the chemical, coal and other industrial sectors.

The purpose of the invention is to increase the efficiency of processing the pulp due to the intensive charging of mineral grains.

The drawing shows the device section.

The device includes a cylindrical housing 1 with an inlet 2 and outlet 3 nozzles. Inside the case there are spiral working 4 and axial auxiliary 5 electrodes. The spiral working electrode 4 is made in the form of a hemisphere reversed to the auxiliary electrode from coils of resilient material located close to each other. The contd 1 of electrode 4 is equipped with current leads 6 and 7, Auxiliary electrode 5 has a current lead 8 at its end. A working electrode 4 is installed between the output nozzle 3 and auxiliary electrode 5. Current leads 6–8 are brought along side housing 1 through bushing insulators 9–11 for to electrical power supplies,

The working electrode has the ability to make elastic oscillations in the direction of the flow of the pulp and in perpendicular directions. In addition, as the auxiliary

oscillations. The pulp through P 2 enters K 1 and exits through P 3. When constant electrical voltage is applied to the current leads 6, 8 under the pressure of the pulp, coils E 4 elastically diverge to form a slit. Passing through them, the dispersed particles contact with E 4 and acquire its charge. When flow past pulp E 4 and 5, the latter oscillate. This leads to a decrease in the polarization effects on O 4 and 5 and contributes to the cleaning of the surfaces of mineral grains. 1 il.

electrode, it has the ability to make and torsional vibrations,

The device works as follows.

Through the inlet nozzle 2, the slurry enters into the housing 1 and exits through the outlet nozzle 3. A constant electrical voltage is applied to the current leads 6.8 of the working 4 and the auxiliary 5 electrodes.

Under the pressure of the pulp flow, the coils of the working electrode 4 are elastically consumed, and the pulp passes through the forming holes - the slits. The passage through the slots, the dispersed particles are in contact with the working electrode 4 and acquire its charge.

The flow around the pulp of the working and auxiliary electrodes leads to oscillations of these electrodes. At the same time, electrolysis gas bubbles form on the surface of the electrodes of the finely dispersed Hbie and are carried away by the turbulent pulp flows. This ensures the reduction of polarization effects on the electrodes, leading to additional losses of electricity. In addition, the effect of mechanical (acoustic) oscillations on the pulp also contributes to cleaning the surfaces of mineral grains and improving their interaction with reagents.

The arrangement of the turns of the working electrode 4 in contact and form

The hemisphere facing the auxiliary electrode 5 ensures efficient and uniform charging of mineral grains and prevents jamming between the turns of the working electrode, thus ensuring high reliability of the device.

Placing the working electrode 4 on the side of the outlet nozzle prevents the dispersed particles of the pulp from acquiring a charge that coincides in sign with the charge of the auxiliary electrode 5.

Thus, during the operation of the device, an increase in the efficiency of pulp preparation is achieved, which ensures the following technical and economic indicators of flotation.

Editor C, Baker

Compiled by V.Morozov Tehred A. Kravchuk

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Circulation 509Subscribe

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Design, And

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Claims (1)

Invention Formula A device for preparing the pulp for flotation, including a housing with an inlet and an outlet, mounted inside the housing of a spiral working and axial auxiliary electrodes with current leads at the ends, characterized in that, in order to increase the efficiency of pulp processing due to intensive charging of mineral grains, the turns of the working electrode located close to each other with the formation of a hemisphere, facing the base of the inlet nozzle, while the working electrode in the horizontal projection is made overlapped p pepper housing section and installed between the auxiliary electrode and the outlet pipe. Proofreader O. Kravtsov