SU1674899A1 - Method and device for separating solid particles from liquid - Google Patents

Abstract

The invention relates to the purification of the pulp during the enrichment of minerals. The purpose of the invention is to increase the effectiveness of clarification. The height of the deposition zone can be controlled. The device includes a housing 1 conical with a sedimentary pipe 6, a pulp conveyor pipe 2 with a straight section 7, located at the bottom of the housing 1 laminariser 4 flows in the form of plate packs 23 radial trays 24 drain threshold trough 5 with a branch pipe 26 Pulp receiver 3 can be set relative to Section 7 of the slurry tube with the possibility of movement, is cylindrical and equipped with a flow twistor 11 with working elements in the form of nozzles. Options are possible for the pulp-receivers 3 in the form of cones with narrowing or expansion in turn and equipped with twisting elements 11 with working elements in the form blades Pulp is fed through pipe 2e pulporem 3 where, by giving the pulp a screw movement from top to bottom using a twister 11, the pulp is divided into two parts - with coarse and finely dispersed The first fraction of the flow of pulp with a fine fraction through the flow of pulp with a coarse fraction ensures the precipitation of the coarse fraction from the captured fine 4 sf f-ly, 4 il 2 V SP C s 00 | 0 0

Description

The invention relates to a device for cleaning liquid from suspended particles and can be used to clean the pulp during the beneficiation of minerals.

The purpose of the invention is to increase the efficiency of clarification, as well as the possibility of adjusting the height of the deposition zone.

FIG. 1 shows a device, a longitudinal section; Fig. 2 shows an embodiment of a pulp receiver in the form of a cylinder; in FIG. 3, too, in the form of a reverse truncated cone; figure 4 -v same, in the form of a truncated cone.

The device has a housing 1, a slurry pipe 2 with a pulp receiver 3, a laminarizer 4 flow and a drain threshold chute 5.

The housing 1 is made conical with a slope of the wall to the horizon of 45-52 ° and is equipped with a sedimentary nozzle 6. Pulp feed - a conduit 2 has a vertical section 7, the end of which is located in the lower part of the housing 1 and is equipped with a pulp receiver 3. The latter is made in the form of a glass, has a working surface in the form of a body of rotation. for example cylindrical 8 (figure 2). the upper closed end 9 in the form of an annular lid and the lower open end 10. The pulpo-receiver 3 is equipped with a flow swirler 11, made, for example, with working elements in the form of nozzles 12, equally oriented (for example, clockwise) to the working surface and hydraulically associated with inclined radial nozzles 13 and the lower end of the vertical section 7 of the pulp-supporting pipe 2. The working elements (nozzles 12) are placed in the zone behind the diametrical dimension of the section 7 of the pulp-supporting pipe 2. The pulpo-receiver 3 is installed relative to the vertical section 7 of the pulp-supporting pipe 2 with the possibility of axial displacement (to control the deposition zone), for which at the lower end of the pipe 2 a rigidly connected guide ring 14 is placed and the second guide ring 15 is rigidly connected to the upper end 9 ribs 16 stiffness, and the latter are connected by tami 17 with a lifting mechanism (not shown).

The pulp-receiver 3 can be made in the form of a reverse truncated cone 18 to increase the efficiency of work on the pulp with a reduced content of the coarse-dispersed fraction or in the form of a cone 19 (Fig. 4) to increase the efficiency of work on the pulp with an increased content of the coarse fraction. In these cases, the flow curler 11 is made with the working elements in the form of blades 20 mounted obliquely on the cylindrical body 21 of the thread curler 11. The housing 21 is integrally connected to the upper end 9 by means of the radial ribs 22. and the end 9

rigidly connected with the vertical section 7 of the slurry pipe 2. The regulation of the deposition zone in this case can be achieved by telescoping the section of the vertical part of the slurry pipe 2 (not shown). The laminar flow 4 is made in the form of sector packages of inclined parallel plates 23, bounded on the sides by radial trays 24, hydraulically

5 associated with the groove 5 In the central part of the housing 1 in the zone of the laminarizer 4, a cylindrical screen 25 can be mounted coaxially with the vertical part 7 of the pulp-feed pipe 2

0 of the disturbed part of the liquid due to the possible release of air contained in the pulp from the pulp receiver 3 Drain threshold trough 5 is equipped with a discharge nozzle 26. At an angle of inclination to the horizon

5 of the wall of the housing 1. equal to 52 °. Means for removing sediment, apart from external hydrotransport, are not required; at smaller angles of inclination such a system can be a flushing system (not shown).

0The device operates as follows.

The pulp flow through the pulp-feeding tube 2 is fed to the pulpo-receiver 3, imparting to the flow, when discharged by means of twists of the flow 11, is a screw motion from top to bottom. By virtue of this, the coarse fraction (particles) under the action of centrifugal forces on the working surface 8 (18 or 19) of the pulp receiver 3 is lowered, creating

0 a ring section curtain through which a stream of pulp of a part of the fine fraction (particles) is passed through the space covered by the curtain. With such a transmission, a part of fine5 dispersed particles is deposited together with coarse particles in the discharge zone, after passing through the curtain a part of fine particles is raised by an upward flow to the upper central part of the core.

0 is position 1 and is radially distributed. at the same time, the flow is paminarized with the help of a laminar laminator 4. which provides gravitational sedimentation of fine particles in the peripheral part

5 housing 1. In the presence of air in the pulp, the flow of the latter falls inside the screen 25. In this way, its disturbing effect on laminarization is excluded. The clarified liquid through the radial trays 24 enters the threshold drainage chute 5 and is removed (at a constant level) through the nozzle 26. The thickened product is removed through the nozzle 6.

The use of the invention will allow, while maintaining productivity, to reduce the removal of the fine fraction by clarified water, which reduces operating costs by eliminating or reducing the use of expensive coagulators.

Claims (5)

Claim 1. Device for separating solid particles from liquid, including a body, a pulp-feeding pipe with a pulp receiver, located in the lower part of the body and made in the form of a rotating body surface with a vertical axis, a flow laminarizer in the form of packages of inclined parallel plates, a drainage chute with a branch pipe and a means for removing sediment, characterized in that, in order to increase the efficiency of the clarification, the pulp-receiver is provided with a cover and a swirler made with working elements in nozzles or blades attached to the lower end of the slurry tube and directed to the inner surface of the slurry receiver. 2. The device according to claim 1, wherein, in order to be able to adjust the height of the deposition zone, the pulpo-receiver is mounted with the possibility of vertical movement relative to the pulp-feed pipe. 3. Device pop. 1, characterized by the fact that the pulp receiver is made in the form of a reverse truncated cone. 4. The device is pop. 1. distinguishing - with the fact that the pulp receiver is made1 in the form of a truncated cone. 5. Device pop. 1, characterized in that the pulp receiver is made in the form of a cylinder. FIG. 2 Fig.Z YU 22 eleven Fig4