SU1217483A1 - Centrifugal flotation machine - Google Patents

Description

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The invention relates to equipment for the flotation separation of materials and can be used in the mining, metallurgical, chemical and other industries.

The purpose of the invention is to increase machine productivity and improve the quality of the concentrates obtained by creating optimal conditions for the mineralization of air bubbles and the discharge of the frothy product.

Fig. 1 shows a centrifugal flotation machine, a slit; in fig. 2 is a section A-A in FIG. one.

The flotation machine consists of a cylindrical-conical body 1 with a tangentially installed branch pipe 2 of the initial power supply, a device 3 for unloading a chamber product made, for example, by the principle of a pipe in a pipe, a device for unloading a foam product made in the form of a pipe 4 with a funnel 5 Around the funnel 5 there is a spitskasten 6 of a funnel shape. In the cone-shaped part of the body 1, aerators 7 are installed. The perforated damper 8 of the cone-shaped form is installed coaxially with the body 1 and union of the base damper 8 cylindrical grille 9, consisting of vertical plates 0, set at an angle to its radial plane and perekrshayuschih radially adjacent layers. In the space between the cylindrical part of the housing 1 and the cylindrical grid 9, concentric perforated elements 11 are staggered relative to each other. In front of the tangential loading nozzle 2 a cyclone aerator 12 can be installed.

Flotation machine works as follows.

The pulp under pressure enters from the cyclone aerator 12 tangentially into the cylindrical part of the body where, under the action of centrifugal forces, a froth product is released from the pulp, which is rapidly discharged to the upper part of the machine. Large pulp fractions enter the space between the body 1 and the cylindrical 32

A drain 9, where flow deceleration occurs and the mineralization of air bubbles is facilitated. The arrangement of perforated concentric elements 11 in a checkerboard pattern provides the most uniform pulp aeration. Fine and medium mineral fractions enter the rotating pulp flow.

into the inner space of the cylindrical lattice 9. The largest particles are concentrated near the lattice 9 and form a dense weighted layer into which air bubbles are directed through the cylindrical lattice. High turbulence in the near-wall layer provides for cleaning of bubbles with large grains fixed on them and fixing

on vacant sites of more hydrophobic minerals of smaller size. The implementation of the grating 9 in the form of vertical plates 10, located at an angle to its radial plane and

intersecting in the radial direction of each other, prevents the mixing of the pulp from the inner and outer spaces of the cylindrical lattice 9 and ensures high turbulence of the inner wall layer. Mineralized air bubbles and non-floated fractions pass through a quenching rotation perforated damper 8 and are divided into foam and chamber products. Performing the fixture dp of unloading the froth product in the form of a pipe 4 with a funnel 5 coaxially to the body ensures intensive collection of floated particles, and the implementation of spitskasten 6, which has a funnel shape, provides an intensive circulation of the industrial product in the upper part of the flotation machine. The chamber product is discharged through a discharge, device, made like a pipe in a pipe.

Thus, during the operation of the centrifugal flotation machine, the air bubbles are consistently mineralized with mineral grains of various sizes, the intensive output of lightly floated fractions and the discharge of the froth product results in an increase in its productivity

concentrates obtained.

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Circulation 515

Order 1030/11 Subscription

Branch PPP Patent, Uzhgorod, Proektna St., 4

Claims (3)

1. CENTRIFUGAL FLOTATION MACHINE, which includes a cylindrical-conical body with a tangentially installed nozzle for supplying initial power, devices for unloading chamber and foam products, an aerator and perforated damper, characterized in that, in order to increase the productivity of the machine and improve the quality of the concentrates obtained by creating optimal conditions for the mineralization of air bubbles and unloading of the foam product, the machine is equipped with a cylinder mounted coaxially to the cylinder in its cylindrical part with a grill and additional aerators made in the form of concentric perforated elements installed between the cylindrical grill and the body, while the device for unloading the foam product is made in the form of a funnel, chipper and spitskasten installed coaxially installed in the central part of the pipe, and a perforated damper It is made in the form of a truncated cone and the _{β β} dinene is cobbed with a large base with a cylindrical lattice. 2. Machine pop. 1, the fact that the cylindrical lattice consists of plates mounted vertically and at an angle to the radial plane of the lattice with the possibility of partial overlapping of each other in the radial direction. 3. Machine pp. 1 and 2, characterized in that the concentric perforated elements are staggered relative to each other. 1 12