Asbestos wind-water two-phase concentrating technology

A kind of asbestos and process technology, which is applied in the field of non-metallic mineral processing, can solve the problems of asbestos loosening or insufficient opening of fibers, and difficult removal of sediment, etc., to achieve the effects of easy dust removal, convenient dehydration and drying, and good ore processability

Inactive Publication Date: 2003-06-11
XIANYANG NONMETALLIC ORE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the weakness of asbestos in the dry process of beneficiation or insufficient loosening of fibers, and solves the problem of difficult removal of sediment in the wet process of beneficiation. At the same time, it adopts a new molding dehydration technology, which can effectively solve the problem of asbestos dehydration

Method used

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  • Asbestos wind-water two-phase concentrating technology
  • Asbestos wind-water two-phase concentrating technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1). The raw ore used for ore preparation has a cotton content of 3.8% and a particle size of <100mm.

[0022] (2). Dipping and drying the ore twice, and vertical shaft crushing twice. Ore particle size <5mm.

[0023] (3). Carry out dry air selection, two-stage suction selection. One section adopts a vibration specific gravity separator to remove sand, and the other section uses a cylindrical sieve to remove dust, so as to obtain coarse cotton with a sand content of about 2% and a dust content of 32%.

[0024] (4). Soak the rough and refined cotton in the soaking tank for 24 hours, then enter the high-speed beater, and beat for 10 minutes to make the concentration 40%.

[0025] (5). Dilute the pulp to 5-10%, and then use a subsidence hydraulic desander to remove sand.

[0026] (6). Pour the ore slurry evenly into the belt shaker dust collector to remove dust, and go through two stages of dust removal operations.

[0027] (7). Dehydrate the concentrated pulp with a m...

Embodiment 2

[0029] (1). The ore to be processed is tailings with a grade of 2.3% and a particle size of <4mm.

[0030] (2) Carry out dry winnowing, two-stage suction selection, one-stage adopts vibratory specific gravity separator to remove sand, and one-stage uses cylinder sieve to remove dust, obtain coarse cotton, quality is sandy 2.3%, dusty 35%.

[0031] (3). Soak coarse and refined cotton for 20 hours, beat for 15 minutes, and the concentration is 40%.

[0032] (4). Dilute the pulp concentration to 5%, and then remove sand in the subsidence hydraulic desander. The tailings are ground and returned to the desander for desandering.

[0033] (5). Evenly pour the ore slurry into the belt shaker dust collector for dust removal, and go through two stages of dust removal operations.

[0034] (6). Dehydrate the concentrated pulp with a molding machine, and dry it in the sun to obtain asbestos with a sand content of 5%; a dust content of 4.5%, and a specific surface area of ​​110dm 2 / g, t...

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Abstract

The present invention relates to a mineral separation process of asbestos mine, combining dry pneumatic separation and wet separation, which is characterized by that it makes the ore undergo the processes of soaking, showering, stacking, airing and breaking in dampness so as to implement its preparation process, in which dry pneumatic separation can obtain crude concentrate asbestos, most of sand and dust can be removed, then it makes wet separation operation, incluidng, removing sand, removing dust, opening and die-pressing and dewatering to obtain the invented high-quality asbestos with high yield and good degree of opening of fiber.

Description

(1) Technical field [0001] The invention relates to a non-metallic ore dressing. (2) Background technology [0002] The traditional asbestos beneficiation adopts the dry process, that is, the mined ore is crushed in a dry state, finely crushed, milled, suctioned step by step, sand removed, dust removed and classified. There are two problems in this method: one is that the moisture content of the ore to be beneficiated is not greater than 2% in the dry method, otherwise it is difficult to achieve many parameters and equipment operation effects of the winnowing process, so the ore must be dried or aired. However, asbestos fibers are minerals rich in structural water, and the structural water accounts for about 8-12% in the fibers. Ores that have been in a dry state for a long time will lose adsorption water and structural water, which will increase the brittleness of asbestos fibers, and damage asbestos fibers in operations such as crushing, cleavage, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C23/08B03B4/00B03B5/28B07B1/00F26B5/08
Inventor 王玉亮王继生王彩玲
Owner XIANYANG NONMETALLIC ORE CHEM
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