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Method for separating scandium and uranium from scandium-containing uranium ore

A technology for uranium ore and tailings, applied in magnetic separation, solid separation, chemical instruments and methods, etc., can solve the problems of complex process, low recovery rate, waste of raw ore, etc., achieve high enrichment ratio, simple operation, and separation high precision effect

Active Publication Date: 2020-04-07
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A uranium mine in Xinjiang contains 30g / ton of scandium and 0.18% of uranium. The existing separation and enrichment methods are complex and the recovery rate is low, resulting in waste of raw ore

Method used

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  • Method for separating scandium and uranium from scandium-containing uranium ore
  • Method for separating scandium and uranium from scandium-containing uranium ore
  • Method for separating scandium and uranium from scandium-containing uranium ore

Examples

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Effect test

Embodiment 1

[0032] A method for separating scandium and uranium from scandium-containing uranium ore, the specific steps are:

[0033] S1: Use a crusher to crush and grind the raw ore with a grain size of -2mm to -200 mesh, accounting for 65-70%;

[0034] S2: adding the ground particles in step S1 to a strong magnetic separator for magnetic separation, the induction intensity of the strong magnetic flotation machine is 1.2T, to obtain scandium-containing concentrate and uranium-containing tailings, and collect scandium-containing concentrate;

[0035] S3: leaching the uranium-containing tailings in step S2 with a concentrated acid with pH=3 to obtain a uranium-rich acid solution and tailings, filter, separate the uranium-containing acid solution from the tailings, and perform the following steps on the obtained uranium-containing acid solution Process and collect uranium in one step.

[0036] The above-mentioned scandium-containing concentrate and uranium-containing acid solution were te...

Embodiment 2

[0041] A method for separating scandium and uranium from scandium-containing uranium ore, comprising the following steps:

[0042] S1: Use a crusher to crush and grind the raw ore with a grain size of -2mm to -200 mesh, accounting for 65-70%;

[0043] S2: Put the particles ground in step S1 into a strong magnetic separator for magnetic separation, the induction intensity of the strong magnetic flotation machine is 1.5T, obtain scandium-containing concentrate and uranium-containing tailings, and collect scandium-containing concentrate;

[0044] S3: leaching the uranium-containing tailings in step S2 with sulfuric acid at pH=1 to obtain a uranium-rich acid solution and tailings, filter, separate the uranium-containing acid solution from the tailings, and proceed to the next step with the obtained uranium-containing acid solution Process and collect uranium.

[0045] The grade of scandium in concentrate containing scandium is 560.5ppm, the recovery rate is 75.9%; the recovery ra...

Embodiment 3

[0047] A method for separating scandium and uranium from scandium-containing uranium ore, comprising the following steps:

[0048] S1: Use a crusher to crush and grind the raw ore with a grain size of -2mm to -200 mesh, accounting for 65-70%;

[0049] S2: Put the particles ground in step S1 into a strong magnetic separator for magnetic separation. The induction intensity of the strong magnetic flotation machine is 1.3T to obtain scandium-containing concentrates and uranium-containing tailings, and collect scandium-containing concentrates;

[0050] S3: leaching the uranium-containing tailings in step S2 with a concentrated acid with pH=3 to obtain a uranium-rich acid solution and tailings, filter, separate the uranium-containing acid solution from the tailings, and perform the following steps on the obtained uranium-containing acid solution Process and collect uranium in one step.

[0051] The grade of scandium in the concentrate containing scandium is 559.8ppm, the recovery r...

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Abstract

The invention provides a method for separating scandium and uranium from scandium-containing uranium ore. The method comprises: crushing and grinding raw ore with the particle size of-2 mm until the number of -200 meshes accounts for 65%-70%; adding the ground particles into a strong magnetic separator for magnetic separation to obtain scandium-containing concentrate and uranium-containing tailings, and collecting the scandium-containing concentrate; leaching the uranium-containing tailings through an acid solution to obtain a uranium-rich acid solution and tailings, and separating the uranium-containing acid solution from the tailings; and enriching scandium through a physical method, then collecting uranium through hydrometallurgy, and achieving separation-smelting combination . The method has the advantages of being easy to operate, high in separation precision and high in enrichment ratio.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for separating scandium and uranium from scandium-containing uranium ore. Background technique [0002] The global scandium reserves are about 2 million tons, and China accounts for 27.5%, ranking first in the world. There are more than 800 kinds of scandium-containing minerals known. The mineral composition is complex, the scandium content is low, and it is distributed in other minerals in the form of isomorphism or adsorption state. The process of enrichment, separation and extraction of high-purity scandium is quite complicated . Scandium and its compounds have a variety of excellent properties, and are widely used in national defense, electric light source, aerospace, chemical industry, metallurgy and other fields. With the consumption of scandium increasing year by year, it is very important to seek more scandium-containing materials and effectively extract and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/30C22B3/08
CPCB03C1/30C22B3/08
Inventor 刘三军刘永李向阳史文革刘建东胡鄂明胡凯光李会娟雷治武
Owner NANHUA UNIV
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