SU1360803A1 - Pneumatic flotation machine - Google Patents

Abstract

This invention relates to the enrichment of minerals. The purpose of the invention is to reduce the loss of valuable components by reducing the duration of the launch under load. In the chamber (K) 1 with bottom 2, cylindrical tanks (CB) 3, 4 are concentrically mounted. Facing the bottom 2 К 1 the end of the central CE 3 is made in the original supply Foamy product in the form of a truncated cone 16 facing the smaller base to the bottom 2. In CE 3 a pipe (P) 11 is installed to unload the chamber product, the free end of which is directed to the bottom 2. At the same time P 11 is connected to the atmosphere by tube 15. A foam chute 9 s P 10 is installed to drain the frothy product. 5 products are installed in the hydrocyclone 6, 7 ring slurries de divisors 8 for aerating pulp - dispersion Gator 12-14. When the machine is started under load, the pulp from CE 3 blurs the material deposited at the bottom of 2 K 1, ensuring a quick start of the machine. The frothy product flows by gravity into chute 9 and is removed through P 10. Unferted material g goes to regrindment in the countercurrent zone between CE 4 and K 1 walls, a / L, then into the flow zone between CE 3 walls and 4. 1 or . oo CD o 00 oo 16

Description

The invention relates to the enrichment of minerals, in particular, to designs of pneumatic type flotation machines.

The purpose of the invention is to reduce the loss of valuable components by reducing the duration of the launch under load.

The drawing shows a pneumatic flotation machine, a slit.

The pneumatic flotation machine consists of chamber 1 with bottom 2, cylindrical tanks 3 and 4 concentrically mounted in chamber 1, devices for classifying the initial feed, made, for example, in the form of a hydrocyclone 5, devices for feeding separated fractions into chamber 1, For example, in the form of collectors 6 and 7 of annular pulverizer 8, foam chute 9 with a drain pipe 10, pipe 11 for unloading a chamber product installed in the central cylindrical module 3 and directed to the free end Ohm to the bottom 2 chambers 1, and dispersants 12-14 air. The nozzle 12 for unloading the chamber product communicates with the atmosphere through the tube 15. The end of the inner cylindrical container 3 near the bottom 2 is made in the form of a truncated cone 16 directed by a smaller base to the bottom 2 of the chamber 1. Windows 17 are made in the upper end of the central cylindrical container 3.

The machine works in the following way.

The pulp treated with reagents is fed under pressure into a hydrocyclone 5, where it is divided into sandy and fine fractions. The coarse fraction through the collector 5 is fed to the pulp divider 8 and further to the foam layer formed during aeration of the pulp with air dispersants 12. The foam product flows by gravity into the foam chute 9 and is removed through the drain pipe 10. The unsupplemented material enters the countercurrent area between the walls of the gauge 1 and the cylindrical tank 4. The fine fraction of the source material is fed through the collector 7. By turning the pulp flow through the dispersants 13, an airy note is formed, floating the hydrophobic components. The resulting frothy product is discharged into the foam chute 9. Non-floated particles with a stream are pulverized into the flow zone formed by the walls of cylindrical cells. Editor I. Shulla Order 5779/11

Compiled by V. Morozov

Tehred I. VeresKorrektor O. Kravtsova

Circulation 509Subscribe

VNIIPI USSR State Committee on the case of inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, at, h. Project, 4

bones 3 and 4 where air is supplied through dispersants 14. The extracted mineral particles are carried into the foam layer and are discharged from there into the foam chute 9. Non-floated material enters the internal cylindrical tank 4 through windows 17, from where it is partially unloaded via pipe 11, and partially through the lower end 16 of tank 3.

in the bottom volume. When the machine is started up under load, a downward jet of fluid is created at the exit of the truncated cone 16 and blurs the material deposited on the bottom 2 of the chamber 1, and ensures a quick start of the machine. Perform the bottom of the inside about

Rennei cylindrical tank 3 in the form of a truncated cone, facing a smaller base to the bottom 2 of the chamber 1, provides for the formation of an intense downward jet and helps to reduce the duration of the launch of the mask under load. At the same time, the implementation of the nozzle 11 with the free end facing the bottom 2 of the chamber 1 and communicated through the atmosphere tube 15 prevents the pulp from being discharged from the chamber when the flotation mechanism is disconnected. Reducing the start-up time of the machine and preventing the discharge of the pulp when the flotation machine is stopped under loading help reduce the loss of valuable components during flotation.

Claims (1)

Invention Formula A pneumatic flotation machine, comprising a chamber with a bottom, concentric cylindrical tanks installed in the chamber, air dispersers, devices for classifying the initial feed and feeding the obtained fractions into the chamber volume, foam chute and tube for unloading the chamber product, characterized in that reduce the loss of valuable components by reducing the duration of the launch under load; the nozzle for unloading the chamber product is installed in the central cylindrical 5 em.kosti, communicated through the tube with the atmosphere and directed to the bottom of the chamber with the free end, and the end of the central cylindrical tank facing the bottom of the chamber is made in the form of a truncated cone, facing the bottom to the bottom 0 0 cameras.