SU1304894A1 - Aerator of flotation machine - Google Patents

Abstract

The invention relates to the enrichment of minerals and reduces the loss of valuable components by increasing the aeration capacity of the aerator. It includes a stator in the form of a disk (D) 3 with a central hole 4, mounted above the impeller (s) 1. The latter is fixed on the hollow shaft 2 and contains a partition wall 10 shaped in the form of a hollow truncated cone, oriented with a large base upwards and profiled screenings D 9. The larger base D 9 has a diameter less than the diameter And 1. Over the entire height And 1 the blades 6 are radially mounted. The diameter of the hole 4 is smaller than the diameter of the larger base D 9 and larger than the diameter of its smaller base. On the surface of the stator facing D 9 there are holes 5 located around the circumference. Moreover, AND 1 is made detachable according to the level of the lower base of D 9. This makes it possible to use an aerator in flotation machines with different flow patterns. The aerator assembled according to the two-sided suction scheme ensures intensive pulp circulation in the upper and near-bottom parts of the floater and good air dispersion. 2 hp f-ly, 3 ill. "(L with about 4 00 with i

Description

113

The invention relates to the enrichment of minerals by the method of flotation, in particular to the coagulation of flotation machines and devices for pulp aeration, and can be used in chambers of various flotation mannines of a pneumomechanical and mechanical type with enrichment of coal and other medullary raw material. a decrease in the loss of valuable components during flotation due to an increase in aerial; Scale abilities aerator.

Ca of FIG. 1 shows a centrifugal aerate.ht assembled according to cxeMe j providing two-way suction of the suspension; in fig. 2 - an aerator assembled according to the scheme that provides the suction of the suspension from below; FIG. 3 is a section A-A in FIG. 2.

The centrifugal aerator includes an impeller 1 mounted on shaft 2 ;, a stator made in the form of a disk 3 with a central hole 4 and recesses 5 on the bottom surface,

The impeller contains 6 blades and you

It is full of two parts: the top 7 and bottom 8. The top of the impeller

includes screen shielding

g q.

moreover, the profiles of its surface in the connector and on the opposite side; are the same. The height of the impeller blades 6 is immaler to the periphery, and at their lower edges a partition 10 is installed on the lower edges, made in the form of a truncated cone, facing a large base to the blades 6

The centrifugal aerator, assembled according to the two-sided suction scheme (Fig. 1), works as follows,

When the impeller rotates 1; on the shaft 2, the pulp being processed is sucked from the top through the hole 4 in the disk; 3 hundred goghs and from the bottom from the subpeller zone, Bozduk for pulp aeration; It is fed through a full shaft 2 and mixes with the lower pulp flow. The upper 7 and lower 8 parts of the impeller discard the upper aeroelectric and lower aerated pu / gf streams, respectively, in the radial direction, with the shielding disk 9 separating these streams in the accelerating section. Further, the upper stream directed by the partition 10 upwards and the lower stream are partially mixed in the peripheral parts of the impeller and further dispersion.

.

Air pulping is performed on the edge; -; blades 6 and when moving the lower surface of the disk of the stator 5 with utbleblem 5. Aerated pulp is thrown into the flotation volume with an azator; a fleece machine where flotation of valuable components is performed. op. a java orc suction circuit; its suction is ensured by an inte: xi-zi-1u flow of pulp in the upper and two-fold portions of the flux-meter and good air dispersion.

Centrifugal aerator, assembled according to the scheme with the lower suction; I eat pulp (Fig 2) 5 The slave melts the following: 1 way ,,

While rotating the impeller 1

behind/ .::

35

40

50

55

g suction pulp processed from the bottom. In this case, the blades 6 of the upper 7 and lower 8 impellers work as one chain ,. The shielding disk 9 from, the flow of pulp from the hole 4 B of the disk 3 stator through which the flow x is fed, the partition 10 directs 7 k pulp upwards under the bar ---: angle to the disk 3 of the stator, B to, the linear gap .. forming stator between DG1SKOM 3 stator and pulp flow draining - :; With the transverse disk drive, the lo; ::;:; wasp and ejection of air supplied through the opening 1: s 4 and the gap between the discs 3 and 9 s Next, the air is mixed with the flow of pulp and dispersed; additionally, when moving along D1ts; ku from an ator, having a corner of Bleu 5 V

An impeller assembled according to this scheme possesses an improved aerating characteristic1 when operating on coarse dispersion pulps in flotation chambers of a large size.

B (j3MO) {Hoc.Tb using an aerator for flotation tanks with c. various flow patterns ,. To switch from double-sided suction of the pulp (the executing disk is located in the middle of the impeller) to the suction part of the flock-meter from the lridothia, it is enough to turn the upper part of the imgeller by turning the impeller upwards; ensured by the fact that

313 048 h D

its surface profiles in the connector and;

from the opposite side are the same.

Optimization of the aerohydrodynamic flotation regime, dostigae ia, during operation of the proposed aerator, allows increasing the efficiency of spraying large and small fractions of the enriched material and reducing losses of valuable components.

Claims (3)

Invention Formula 15 one . A flotation machine aerator comprising a stator in the form of a disk with a central hole and an impeller mounted on the shaft and containing a hollow truncated cone oriented by a large base upwards, a baffle guide-20 ku, a profiled screening disk, the larger base of which has There is a diameter less than 1 times the diameter of the impller, and the blades, which are radially installed along the entire height of the impaler, which is enough to reduce the loss of the centrifugal components during flotation by increasing the aeration capacity of the aerator, the stator mounted above the impeller, with the stator being made with a central hole, D1 meter smaller than the diameter of the lower base of the shielding disk and larger than its smaller base. 2, -. The aerator according to claim 1, wherein the impeller is detachable in terms of the level of the lower base of the shielding disk 3. Aerator according to claim 1, characterized in that on the surface of the stator facing the screen of the stator there are recesses arranged around the circumference. Yu FIG. 2 Fig.Z