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Method for separating scandium concentrate from bayan obo tailings

A technology for concentrates and tailings, applied in chemical instruments and methods, flotation, magnetic separation, etc., can solve problems such as difficult extraction, no economic benefits, waste of resources, etc., and achieve easy and large-scale production , The short and continuous effect of the process

Inactive Publication Date: 2013-08-14
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, because the tailings of Baiyan Obo iron ore or rare earth still contain a considerable amount of useful resources such as iron, rare earth, fluorite, niobium, etc., and it is difficult to extract scandium from the Baiyan Obo tailings, if the tailings are directly used as raw materials Recycling scandium will inevitably cause waste of other resources in the tailings, which does not meet the requirements of comprehensive utilization of resources and has no economic benefits
[0006] The work of recovering scandium from Baiyan Obo tailings is still in its infancy, and there is no related patent on recovery of scandium from Baiyan Obo tailings. Although previous studies have been done, they have not solved the problem of comprehensive utilization of resources and high efficiency of scandium. The problem of recycling, did not get a better process and indicators

Method used

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  • Method for separating scandium concentrate from bayan obo tailings

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Experimental program
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Effect test

Embodiment 1

[0023] The composition is TFe 15.2%, REO 6.8%, Sc 2 o 3 The Baiyun Obo tailings of 200ppm are used as raw materials, and the process technology of the present invention is used to separate the scandium enrichment, and the specific steps are as follows figure 1 Shown:

[0024] (1) Weak magnetic separation: Weak magnetic separation is carried out on the Baiyun Obo tailings after slurry adjustment. The mass concentration of the pulp is 10%. The weak magnetic separation roughing concentrate and weak magnetic separation roughing tailings are obtained, the weak magnetic separation roughing concentrate is used as the raw material for further refining iron concentrate, and the weak magnetic separation roughing tailings are subjected to weak magnetic separation sweeping, and the weak magnetic separation The magnetic field strength of magnetic separation and sweeping is 0.3T. Weak magnetic separation and sweeping can obtain weak magnetic separation and sweeping concentrate and weak m...

Embodiment 2

[0029] The composition is TFe 18.2%, REO 5.3%, Sc 2 o 3 The Baiyun Obo tailings of 230ppm are used as raw materials, and the process technology of the present invention is used to separate the scandium enrichment, and the specific steps are as follows: figure 1 Shown:

[0030](1) Weak magnetic separation: Weak magnetic separation is carried out on the Baiyun Obo tailings after slurry adjustment. The mass concentration of the ore pulp is 15%. The weak magnetic separation roughing concentrate and weak magnetic separation roughing tailings are obtained, the weak magnetic separation roughing concentrate is used as the raw material for further refining iron concentrate, and the weak magnetic separation roughing tailings are subjected to weak magnetic separation sweeping, and the weak magnetic separation The magnetic field strength of magnetic separation and sweeping is 0.22T. Weak magnetic separation and sweeping obtain weak magnetic separation and sweeping concentrate and weak ...

Embodiment 3

[0035] The composition is TFe 22.5%, REO 3.9%, Sc 2 o 3 The Baiyun Obo tailings of 250ppm are used as raw materials, and the process technology of the present invention is used to separate the scandium enrichment, and the specific steps are as follows figure 1 Shown:

[0036] (1) Weak magnetic separation: Weak magnetic separation is carried out on the Baiyun Obo tailings after slurry adjustment. The mass concentration of the pulp is 28%. The weak magnetic separation roughing concentrate and weak magnetic separation roughing tailings are obtained, the weak magnetic separation roughing concentrate is used as the raw material for further refining iron concentrate, and the weak magnetic separation roughing tailings are subjected to weak magnetic separation sweeping, and the weak magnetic separation The magnetic field strength of magnetic separation and sweeping is 0.16T. Weak magnetic separation and sweeping obtain weak magnetic separation and sweeping concentrate and weak magn...

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Abstract

The invention discloses a method for separating scandium concentrate from bayan obo tailings, belonging to the field of ore separation. According to a fractionation ore separation method, bayan obo tailings generated after iron separation or rare earth separation are firstly subjected to low intensity magnetic separation, then the tailings obtained through low intensity magnetic separation are subjected to high intensity magnetic separation to obtain non-magnetic ore, and finally the non-magnetic ore is subjected to flotation to obtain scandium concentrate with scandium oxide content being higher than 400ppm, wherein the recycling rate is higher than 65%. The method is simple in separation flow, reasonable in process, and can enrich other recyclable resources in the bayan obo tailings to some extent while recycling scandium; therefore, the method can be used for comprehensively recycling pare and dispersed element scandium from the bayan obo tailings.

Description

technical field [0001] The invention relates to a method for sorting scandium enrichment from Baiyunebo tailings, which belongs to the technical field of ore dressing. Background technique [0002] Scandium is one of the rare earth elements, and its abundance in the earth's crust is higher than that of many noble metal elements (such as gold and silver) and medium and heavy rare earths (such as europium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, etc.). However, scandium is also one of the typical scattered elements, and there are almost no independent minerals or deposits of scandium, which also brings great difficulties to the beneficiation and smelting of scandium. [0003] Scandium currently used in industry is mainly obtained from industrial by-products, smelting by-products and comprehensive recycling of three wastes. [0004] The Baiyan Obo Mine is a symbiotic deposit rich in iron and rare earths. The content and reserves of scandium are quite conside...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03C1/00
Inventor 李梅胡德志柳召刚王觅堂胡艳红张栋梁高凯
Owner INNER MONGOLIA UNIV OF SCI & TECH
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