SU1745337A1 - Flotation classifier - Google Patents

Abstract

The flotation class is related to mineral processing and is intended to classify crushed ore in a closed grinding cycle with limited sedimentation of heavy minerals by flotation, dewatering and sand transport. The goal is to increase the extraction of valuable components while reducing operating costs, the flotation classifier consists of a dewatering elevator wheel 1 and fixed fixed walls 2 forming a bath 3 jointed with a seal, additional elevator wheels for lifting, and leakage through the seal and the original ore, air lift packages (A ) 8 and 9, forming a pocket (K) 12 for receiving the initial A

Description

The invention relates to devices for classifying crushed ore prior to flotation and can be applied in the mining industry.

The purpose of the invention is to increase the recovery of valuable components, while at the same time reducing operating costs.

Figure 1 shows the flotation classifier, a cross-section; figure 2 - section aa see, 1.

The flotation classifier consists of an elevator wheel 1, fixed end walls 2 forming a bath 3. A seal 4 is installed between the end ring of the elevator wheel and fixed end walls. On both sides of the elevator wheel 1 additional elevator wheels 5 and 6 are mounted to return the grooves through the seal to bath 3 The elevator wheels rotate on the rollers 7. Inside the bath, the airlift packages 8 and the additional packages 9 are fitted perpendicularly to the fixed walls; air from the collector 11. Between the airlift packages there is a pocket 12 for the source material, under which a tent-shaped distributor 13, made in the form of a triangular prism, with two adjacent faces equal and facing the packages 8 and 9, is installed with a gap to the packages 8 and 9 The slopes of the distributor and the lower edges of the airlift packages form slots 14. In the bath 3 there are gutters with nozzles 15 and 16 for receiving foam (concentrate) and 17 and 18 for draining. The additional elevator wheel 5 also serves to lift the raw material entering through chute 19, the flotation class is equipped with a source material funnel 20, a funnel 22 for discharging dehydrated sands and a funnel 23 for returning leakage through the seal 4 to the supply tank. 21. A stationary bath 8 with a lag system and pillars 24 attached to a base 25.

Flotation class works as follows.

The elevator wheels are rotated, and in the airlift packages 8 and 9 through the pipe

11 and the tubes 10 are supplied with compressed air. The unloading of the mill with reagents for flotation of heavy minerals by gravity is directed along the chute 19 into the elevator wheel 5 and rises, unloading into the funnel 20. Hence the crushed ore along the chute 21 with a longitudinal slit falls into the pocket 12. evenly distributed along the airlift packages 8 and 9. From a pocket of 12, all crushed ore passes through

slots 14. Here ore is classified — material with a size of minus 1-3 mm (up to 1 mm are heavy particles and up to 3 mm are light) rises in the upward flow of airlifts, contacts air bubbles and is thrown onto the pulp surface in bath 3. minerals in the form of foam are discharged in gutter 15 and 16, and the overflow in the form of overflow is discharged into gutter 17 and 18. The level of overflow for draining is lower than

for frothy product. The size of the drain is regulated by water.

A material with a size of 1-3 mm is a circulating load and immediately after exiting the slot 14 is lowered into the buckets of the dewatering elevator wheel 1.

The dehydrated material rises and is discharged into the chute 22, which provides gravity sand transport.

in loading the mill through the snail. Possible leakage through the seal 4 is returned to the bath through the pocket 12 by means of elevator wheels 5 and 6 and funnels with chutes 20 and 23.

Practical data obtained in industrial conditions and on the stands show that during flotation in the flotation classifier galena particles up to 1 mm are released into the froth product, and extraction of galena into the flotation classifier reaches 60% of the ore. Classification efficiency for heavy minerals,

able to float increases with

12 to 45%. The extraction of galena in the finished concentrate during the operation of the flotation classifier increases to 3%.

Formula of the invention Flotation classifier, which includes a container with end walls, installed in a tank perpendicular to the end walls of a package of airlifts, a device for receiving a heavy fraction and foam, a distributor of the starting material, which is distinctive and extracting valuable components while reducing operating costs, it is equipped with an additional airlift package installed in parallel

the main package of airlifts with the formation of a pocket for receiving the source material, and a chute for receiving a drain installed behind the device for receiving foam, while the device for receiving the heavy fraction is made in the form of an elevator wheel installed between the end walls of the tank with the formation of a bath, material is installed under the pocket for receiving the source material along its entire length with a gap to the airlift packages and is made in the form of a triangular prism, two adjacent faces of which are equal and addressed to the airlift packages.

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Claims (1)

Claim A flotation classifier, including a container with end walls, a package of aerial lifts installed in the container perpendicular to the end walls, a device for receiving a heavy fraction and foam, a source material distributor, characterized in that, in order to increase the extraction of valuable components while reducing operating costs, it is equipped with an additional a package of aerial lifts installed parallel to the main package of aerial lifts with the formation of a pocket for receiving the source material, and a chute for receiving the drain, install attached to the device for receiving foam, while the device for receiving the heavy fraction is made in the form of an elevator wheel installed between the end walls of the tank with the formation of a bath, and the distributor 10 of the source material is installed under the pocket for receiving the source material along its entire length with a gap to the packets aerial lifts and is made in the form of a triangular prism, two adjacent faces of which are equal to 15 and are facing packages of aerial lifts.