SU1357077A1 - Magnetic separator - Google Patents

Abstract

The invention relates to the field of mineral processing and m. used to separate highly magnetic ores and materials. The purpose of the invention is to increase the quality of the concentrate by improving agitation and washing the flocs. The separator includes a rotating non-magnetic drum 1 with a magnetic system 2, loading 6 and unloading 7 boxes, a spray system 10 and a bath 3 with a feeding tray (L) 4 and a tail unloading slot 5. At the bottom of L 4 there are transverse projections 12, the last of which is located at the level of the slot 5. Above the initial part L 4 a sprinkling system 10 is installed in the form of high-pressure conduits. The latter are made with two rows of outlets. The axes of the first holes in the direction of the pulp are row perpendicular to L 4, the axes of the holes of the second row are inclined at an angle to the bottom of L 4 and directed to the base of the nearest protrusion 12. Pul Q (L pa from magnetized material from box 6 enters L 4. Under the action of jets of water from the conduits, floccules are destroyed and washed. The processed pulp enters the bath 3. The magnetic particles are attracted to the rotating drum 1, removed from the bath 3 and unloaded into the box 7. The non-magnetic particles are discharged through the slit 5 in the form of tails. 2 hp f-ly, 2 ill. (L came to vj vj Konientratrat Khbosta game 1

Description

The invention relates to the field of mineral processing - and can be used for the separation of highly magnetic ores and materials.

The purpose of the invention is to improve the quality of the concentrate by improving agitation and washing of floccules.

FIG. 1 shows a magnetic separator; a cut-away; FIG. 2 — node I in FIG. one,.

The magnetic separator contains a rotating non-magnetic drum 1 with a magnetic system 2, a bath 3 with a feed tray 4 and a tail discharge slot 5, a loading 6 and a discharge chamber 7, a box 8 for flushing water and a tail inlet 9, a spray system 10 made - from the high-pressure conduits 11 installed above the feed tray 4 in its initial part. The bottom of the feed tray 4 is provided with transverse (relative to the flow of the pulp) protrusions 12, the last of which is located at the level of the tail gap.

The high-pressure conduits of the squirrel 10 are made with two rows of outlet openings 13 and 14. The axes of the outlet openings 13 of the first, along the direction of the pulp, are perpendicular to the bottom of the feed tray 4, and the axes of the outlet openings 14 of the second row are inclined at an angle to the bottom of the feed tray and directed to the base of the nearest bulge 12.

The number of protrusions and conduits depends on the type of ore processed.

The separator works as follows.

The pulp, consisting of magnetized material in the form of floccules and sludge, through the loading box 6 enters the feeding tray 4. In the initial part of the latter, the pulp flows in the form of a stream of a small height. Under the spray 10, through the jets of WATER leaving the openings 13 of the conduit 11, the floccules 50 are destroyed and the material is agitated. Under cooked. thus, the material approaches the protrusion 12 in the bottom of the tray 4. Under the action of water jets from the outlet holes 14 in the pulp flow, the protrusion 12 creates greater turbulence, due to which the material is effectively washed from the rock impurities.

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40

with

50

When separating hard magnetic materials, for which the high strength of floccules is typical, one high-pressure conduit (squirting) and one protrusion are insufficient. For these cases, the installation of two or more conduits and projections is necessary in the separator.

The processed pulp enters the separator bath 3, where with the aid of a magnetic system 2 magnetic particles are attracted to the drum 1 and, due to the rotation of the latter, are removed from the bath 3, unloading in the form of a concentrate into the discharge box 7 with flush water from the box 8. Non-magnetic the part through the tail slot 5 and the tail gate side 9 unloads from the bath 3 in the form of tails.

The water supplied through the outlets under high pressure in the form of jets from above, in combination with the protrusions creates turbulent turbulence in the pulp flowing along the bottom of the feed tray - 5 a stream of small height that

promotes flocculation and effective washing.

The water jets emerging from the holes of the water conduit, the first in the course of the pulp row, destroy floccules, and the water streams leaving the holes of the second row effectively wash the destroyed foci.

0

50

The most efficient flushing of the floccules can be achieved with a sufficient flushing front, therefore the sprinkler system in the magnetic separator is installed in the initial part of the feeding tray and has one or several conduits, and the bottom of the feeding tray has one or several projections not located below the level of the tail discharge gap of the bath. Below

 The level of the tail slot of the tray is completely filled with pulp.

50

Claims (3)

1. A magnetic separator containing a non-magnetic drum, rotatably mounted, a magnetic system located inside it, a bath with a feed-tray and a tail tank with a slit, loading and unloading boxes and sprinkling, characterized in that, to improve the quality of the concentrate by improving agitation and washing flocs. the bottom of the supply tray is provided with transverse projections, and the sprinkler is made in the form of conduits with two rows of holes each installed above the initial part of the supply tray parallel to the transverse projections. 2. Separator on and. 1, that is, that the axes of the first holes along the pulp flow are perpendicular to the bottom of the feeding tray, and the axes of the holes of the second row are inclined at an angle to the bottom of the feeding tray and directed toward the base of the nearest transverse protrusion. 3. Separator on the PP. 1 and 2, which is characterized by the fact that the last protrusion along the pulp is set at the level of the tail slit. fu2,22 7 / /2--.- Editor I.Gorn Order 5921/6 Compiled by A.Moiseenko Tehred L. Serdyukova. Proofreader A.Zimokosov Circulation 509 Subscription VNIIPI USSR State Committee er for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4