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Method for recycling accompanying rare elements in ion adsorption type rare earth tailings

An ion adsorption type, rare element technology, used in chemical instruments and methods, solid separation, wet separation, etc., can solve the problem of not paying enough attention to other rare elements associated with it, and achieve improved utilization, less initial investment, The effect of simple process flow

Inactive Publication Date: 2012-05-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country already has mature technology for the mining and utilization of such deposits (such as patent: 89102377.1), but the existing technology generally only pays attention to the extraction and utilization of rare earth elements, and does not pay enough attention to other associated rare elements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Put 1 part by weight of the ion-adsorbed rare earth tailings after gallium oxide recovery in Ganzhou Xinfeng, Jiangxi Province into a mixer, add 2 parts by weight of water, and sodium tripolyphosphate with a water content of 0.02%, and stir evenly to obtain a pulp;

[0026] 2) The ore slurry is introduced into the spiral chute, and the part rich in heavy minerals is enriched in the inner side of the lower part of the spiral chute with the help of the centrifugal force, friction force and water flow force of the chute, and the outer mud and light sand are discharged into the tailings pond;

[0027] 3) Import the part rich in heavy minerals into the shaker for further separation to obtain heavy mineral concentrates;

[0028] 4) Magnetite is separated from the heavy mineral concentrate by weak magnetic separation and recovered as a by-product. The rest of the heavy mineral concentrate is rich in rare and scattered elements, and the rare and scattered elements are Nb, Ta,...

Embodiment 2

[0030] 1) Put 1 part by weight of the ion-adsorbed rare earth tailings after gallium oxide recovery in Ganzhou Xinfeng, Jiangxi Province into a mixer, add 5 parts by weight of water, and sodium hexametaphosphate with a water content of 0.2%, and stir evenly to obtain a pulp;

[0031] 2) The ore slurry is introduced into the spiral chute, and the part rich in heavy minerals is enriched in the inner side of the lower part of the spiral chute with the help of the centrifugal force, friction force and water flow force of the chute, and the outer mud and light sand are discharged into the tailings pond;

[0032] 3) Import the part rich in heavy minerals into the shaker for further separation to obtain heavy mineral concentrates;

[0033] 4) Magnetite is separated from the heavy mineral concentrate by weak magnetic separation and recovered as a by-product. The rest of the heavy mineral concentrate is rich in rare and scattered elements, and the rare and scattered elements are Nb, Ta,...

Embodiment 3

[0035] 1) Put 1 part by weight of the ion-adsorbed rare earth tailings after gallium oxide recovery in Longnan, Ganzhou, Jiangxi, into a mixer, add 3 parts by weight of water, and sodium pyrophosphate with a water content of 0.1%, and stir evenly to obtain a pulp;

[0036] 2) The ore slurry is introduced into the spiral chute, and the part rich in heavy minerals is enriched in the inner side of the lower part of the spiral chute with the help of the centrifugal force, friction force and water flow force of the chute, and the outer mud and light sand are discharged into the tailings pond;

[0037] 3) Import the part rich in heavy minerals into the shaker for further separation to obtain heavy mineral concentrates;

[0038] 4) Magnetite is separated from the heavy mineral concentrate by weak magnetic separation and recovered as a by-product. The rest of the heavy mineral concentrate is rich in rare and scattered elements, and the rare and scattered elements are Nb, Ta, Sc, Zr, W,...

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PUM

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Abstract

The invention discloses a method for recycling accompanying rare elements in ion adsorption type rare earth tailings. The method comprises the following steps of: (1) loading 1 part by weight of ion adsorption type rare earth tailings into a stirring machine, adding water and a dispersing agent, and uniformly stirring to get ore slurry; (2) introducing the ore slurry into a spiral chute, enabling a part which is rich in heavy minerals to be enriched on the inner side of the lower part of the spiral chute in virtue of centrifugal force, friction force and flow dynamics of the chute, and discharging slurry and light-weight sand on the outer side to a tailing pond; (3) introducing the part which is rich in the heavy minerals into a shaking table for further separation so as to get concentrate of the heavy minerals; and (4) separating magnetite from the concentrate of the heavy minerals by low intensity magnetic separation and recycling the magnetite as a by-product, wherein the remaining concentrate of the heavy minerals is rich in rare and rare dispersive elements. According to the method disclosed by the invention, the economic benefits of a mine can be greatly increased and the utilization rate of resources is improved. The recycling method provided by the invention has the advantages of low consumption of chemicals, simple process flow, low initial investment, higher economic benefits and higher comprehensive utilization efficiency.

Description

technical field [0001] The invention relates to a method for recovering associated rare elements from tailings of ion-adsorbed rare earth mines. Background technique [0002] Ion-adsorbed rare earth ores are widely distributed in South China and Southwest China, and have important economic value. my country already has mature technology for the mining and utilization of such deposits (such as patent: 89102377.1), but the existing technology generally only pays attention to the extraction and utilization of rare earth elements, and does not pay enough attention to other associated rare elements. [0003] On the other hand, ion-adsorption type rare earth ores are generally obtained from the weathering of ore-bearing granite. In addition to rare earth elements, there are usually other rare elements that are enriched in the weathered crust. Those with potential recovery value include W, Sn, Nb, Ta, Sc, Li, Rb, Cs, etc. These rare and scattered elements have important industria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 叶瑛黄元凤夏枚生陈雪刚潘依雯丁茜
Owner ZHEJIANG UNIV
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