RU1789277C - Pulp conditioning apparatus - Google Patents

Abstract

The invention relates to mineral processing. The goal is to improve the conditioning quality of the pulp and reduce the consumption of flotation reagents (RF) by increasing the contact zone of the pulp stream with the RF and more uniform processing. In the upper part of the apparatus body (K) 1, under the feeding device (P) 7, on the axis K1, P 2 is located for distributing the pulp in a continuous flow, made in the form of a disk 3 or a cone 4 located upward. On the upper surface of P 2, curved radial guides are fixed. Under P 2, one above the other, on the axis K 1, there are an air supply nozzle 8 and an injector 10 for supplying the FR in the form of aerosols directed towards each other. Under the nozzle 10 is an annular flow divider 13, below which is located a conical chipper 14 of the pulp stream. Below the nozzle 10, but above the flow divider 13, as well as at the same level with the chipper 14, conical reflectors 15 are located on the wall K 1. The height of the lower edges of the chipper 14 and the reflector 15 is the same. The initial pulp through P 7 enters P 2, after which it falls in the form of a continuous stream. From the nozzle 10 and nozzle 8, an air stream and a stream of FR in the form of aerosols, which, after collision, are directed to contact with the pulp stream, flow towards each other. The treated pulp flows down and collects in the lower part of K1, from where it is discharged through P 21 to allow the treated pulp to flotate. 2 s.p. f-ly, 5 at. With tttftjr XI 00 Yu Yu XI x |

Description

The invention relates to the field of mineral processing by flotation, in particular, to devices for preparing pulp for the flotation process, and can be used in the processing of ore and non-metallic raw materials.

The aim of the invention is to improve the quality of conditioning of the pulp and reduce the consumption of flotation reagents, by increasing the contact zone of the flow of pulp with flotation reagents and more uniform processing.

Figure 1 shows a vertical axial section through a pulp conditioning apparatus; Fig. 2 shows an embodiment of a pulp distribution device; Fig. 3 is a plan view of this device; Fig. 4 is a vertical axial section through a pulp conditioning apparatus provided with a pulp dividers and reflector system; figure 5 is a section aa in figure 4.

The pulp conditioning apparatus consists of a vertically mounted hollow cylinder 1, in the upper part of which on its axis there is a device 2 for distributing the pulp into a continuous flow, made in the form of a disk 3 or a cone 4 mounted upward. On the upper surface of the cone 4 of the distribution device 2, curved radial guides 5 are mounted, converging at the top of the device 2. The pulp distribution device 2 is attached to the vertical cylindrical body 1 by means of rods 6. Above the pulp distribution device 2 on a continuous flow, on the axis of the housing 1 there is a feeding device 7, Under the device 2 for distributing the pulp on the axis of the housing 1 there is an air nozzle 8 connected to the pipe 9 for air garden. Under the nozzle for supplying air 8, an atomizer 10 for supplying flotation reagents in the form of aerosols is connected to the pipe 11 for supplying flotation reagents and to the pipe 12 of compressed air, with the nozzle for supplying air 8 and the nozzle facing each other. Under the nozzle 10 for supplying flotation reagents, an annular flow holder 13 having a triangular cross section and facing with a narrow part up is installed coaxially to the housing 1. Under the annular support 11 on the axis of the housing 1, a conical pulp flow cone 14 is installed with its top upward. Below the nozzle 10 for the supply of flotation reagents, but above the annular sweater 13, and also at the same level as

conical chipper 14 with the coincidence of the height of their lower edges, conical reflectors 15 are made on the inner surface of the wall of the cylindrical body 1, made in the form of truncated cones attached with large bases to the body 1.

Under the cone chipper 14, similar to the air nozzle 8 and nozzle 10

an air nozzle 16 is installed with a pipe 17 for supplying air and a nozzle 18 for supplying flotation reagents in the form of aerosols, with a pipe 19 for supplying flotation reagents and a pipeline 20 of compressed

5 air. In the lower part of the cylindrical body 1 there is a device 21 for withdrawing the treated pulp.

The pulp conditioning apparatus operates as follows. Original

0 the pulp comes from the feed device 7 to the tool 2, from which it flows downward in the form of a continuous annular flow. At the same time, compressed air is supplied to the air nozzle 8 through line 9, and flotation reagents and compressed air are supplied to nozzle 10 through line 11 and line 12, respectively. The flow of compressed air from the nozzle 8 and the aerosol of reagents from the nozzle

0 1Q collide with each other, which leads to a decrease in the velocities of these flows and an increase in the volume of flotation reagents occupied by the aerosol .i

The latter makes it possible to increase the area of contact of the continuous flow of pulp with the aerosol of reagents. The pulp treated with reagents and air falls down onto the conical reflector 15, flows from them onto the annular flow divider 13, where

0 is divided into two streams. The pulp stream closest to the axis enters the cone chipper 14, and the peripheral stream enters the next cone reflector 15. The pulp streams flowing from the cone chipper 14 and the cone reflector 15 are combined and fall down as a continuous annular stream treated with aerosol flotation reagents, The aerosol flow from the nozzle 18 and the air stream from the nozzle 16 resulting from the interaction of the reagents 16. The pulp re-treated with reagents accumulates in the lower part of the housing 1 and is directed to the flotation through the device 21.

5

To twist the continuous annular flow of pulp falling from the device 2 for its distribution, curved guides 5 can be installed on it.

Claims (3)

SUMMARY OF THE INVENTION 1. A pulp conditioning apparatus, comprising a housing, within which a pulp distribution device, at least one nozzle for supplying air and one nozzle for supplying flotation reagents in the form of aerosols, a reflector and a device for discharging the treated pulp are arranged in series the fact that, in order to improve the quality of conditioning of the pulp and reduce the consumption of flotation agents by increasing the contact zone of the flow of pulp with flotation agents and more uniformity and processing, the housing is formed as a hollow cylinder vertically mounted, means for distributing the pulp is in the form oosno disposed with the housing disc or cone vertex facing up, the air nozzle and nozzle are arranged in pairs under each other coaxially to the housing and are directed towards each other. 2. The apparatus according to claim 1, characterized in that the pulp distribution device is made with curved radial guides mounted on its upper surface. 3. The apparatus according to claims 1 and 2, characterized in that if there is more than one pair of nozzle-nozzle, the apparatus is equipped with an annular flow divider and a cone chipper installed between the pairs and additional reflectors fixed on the cone, one of which is located between the nozzle and an annular flow divider, and the other at the level of the conical bump with the location of their lower edges on one horizontal plane. Fie. 1 Fi Mr. Z Fig.Z FIG. 5