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Ore separation method for recycling scandium from bayan obo tailings

A beneficiation method and tailings technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of complex composition, waste of rare earth resources, and high production costs, and achieve simple process, reduce production costs, and avoid losses. Effect

Inactive Publication Date: 2013-01-23
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] If scandium is directly extracted from Baiyuebo tailings by metallurgical methods, on the one hand, it will cause serious waste of other rare earth, iron, fluorite, niobium and other resources; High, if directly use Baiyun Obo tailings as raw material to extract scandium, the production cost is high and the economic structure is unreasonable

Method used

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  • Ore separation method for recycling scandium from bayan obo tailings

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Experimental program
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Effect test

Embodiment 1

[0024] With the scandium oxide content being 190g / t Baiyun Obo tailings as raw material, utilizing the process technology of the present invention, carry out the following steps, as figure 1 :

[0025] (1) Classification and grinding: the tailings raw materials of Baiyun Obo are classified by a spiral classifier, the +200-mesh coarse-grained ore is finely ground by a ball mill, and returned to classification after grinding, and the -200-mesh ore obtained by the classification is adjusted for flotation ;

[0026] (2) Flotation: Put the -200 mesh Baiyun Obo tailings obtained after grading and grinding into the flotation tank, and carry out the closed-circuit flotation process of roughing, selection, and sweeping in sequence, and select and sweep The number of series is 3; firstly, the tailings after pulping are added to the roughing flotation tank, stirred, and sodium carbonate, water glass and oleic acid are added in turn to carry out roughing, and roughing is used to obtain r...

Embodiment 2

[0030] With the scandium oxide content being 220g / t Baiyun Obo tailings as raw material, utilizing the process technology of the present invention, carry out the following steps, as figure 1 :

[0031](1) Classification and grinding: Baiyun Obo tailings raw materials are classified by a hydrocyclone, the +200 mesh coarse ore is finely ground by a ball mill, and returned to classification after grinding, and the -200 mesh ore obtained by classification is floated select;

[0032] (2) Flotation: The -200 mesh Baiyun Obo tailings obtained after grading and grinding are slurried and added to the flotation tank, followed by a closed-circuit flotation process of roughing, selection, and sweeping. The stages of selection and sweeping are both 2 levels; the mass concentration of the flotation pulp is 55%, the temperature of the pulp is 55°C, the pH of the pulp is 8.5, and the dosage of the flotation reagent is based on the reagent and the -200 mesh added in each roughing. The mass r...

Embodiment 3

[0036] Be that the Baiyan Obo tailings of 240g / t of scandium oxide content is raw material, utilize the technology of the present invention, carry out following steps, as figure 1 :

[0037] (1) Classification and ore grinding: The tailings raw materials of Baiyun Obo are classified by vibrating sieve, and the +200-mesh coarse-grained ore is finely ground by a ball mill. After grinding, it returns to classification, and the -200-mesh ore obtained by classification is mixed for flotation;

[0038] (2) Flotation: The -200 mesh Baiyun Obo tailings obtained after grading and grinding are slurried and added to the flotation tank, followed by a closed-circuit flotation process of roughing, selection, and sweeping. The number of selection stages is 3, and the number of sweeping stages is 2; the mass concentration of the flotation pulp is 65%, the temperature of the pulp is 65°C, and the pH of the pulp is 10.6. The mass ratio of -200 mesh Baiyun Obo tailings is added, and the amount ...

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Abstract

The invention discloses an ore separation method for recycling scandium from bayan obo tailings. According to the ore separation method, the bayan obo tailings are graded firstly, and then the obtained coarse ore grains are ground and then returned to be graded and fine ore grains are pulped and then subjected to floatation, thus forming a closed circuit grinding flow; floatation is the closed circuit flow of fractionation and comprises rough floatation, fine floatation and scavenging, wherein the floatation concentrates are easily floating minerals such as fluorite and rare earth; the floatation tailings are subjected to magnetic separation including low intensity magnetic separation and high intensity magnetic separation, and light ore grains obtained after the non magnetic ore obtained through magnetic separation is separated again are scandium concentrates, wherein the obtained scandium concentrates has high scandium content being more than 500g / t and the recycling rate being higher than 60%. The method creates a breakthrough for directly recycling scandium from bayan obo tailings, is simple in process and also provides high-grade bayan obo tailings from which rare earth, fluorite and iron can be recycled.

Description

[0001] technical field [0002] The invention relates to a beneficiation method for recovering scandium from Baiyun Obo tailings, belonging to the technical field of beneficiation. Background technique [0003] Baiyun Obo Mine is a typical associated deposit, rich in rare earth, iron, fluorite, niobium, scandium and other minerals and useful elements. However, for the utilization of Baiyun Obo resources, iron and rare earths have been mainly recycled. Other minerals and useful elements are regarded as gangue during the mining process and are dumped and discharged, resulting in a waste of precious resources. [0004] With the increasing shortage of mineral resources, the comprehensive utilization of mineral resources in Baiyun Obo has attracted more and more attention from the state and localities. [0005] Baiyan Obo tailings are mainly tailings formed after iron and rare earth selection. Except for a considerable amount of iron and rare earth, other minerals or elements ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 李梅柳召刚王觅堂胡艳红高凯张栋梁郭财胜
Owner INNER MONGOLIA UNIV OF SCI & TECH
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