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Scandium extraction method of river channel sedimentation

A silt and river channel technology, applied in the field of extracting scandium products from river silt, can solve the problems of non-renewable mineral resources, easy damage to the ecological environment, unfavorable competition of scandium products, etc., to achieve environmental protection, improve concrete quality, low cost effect

Inactive Publication Date: 2004-03-03
汪友华
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AI Technical Summary

Problems solved by technology

At present, scandium mostly occurs in natural minerals, and the minerals in nature are limited. At this stage, the common method for extracting scandium from minerals is: sample pretreatment—magnetic separation or (electric separation)—scandium Concentrate—hydrochloric acid plus co-solvent leaching—extraction—pickling—reverse extraction—oxalic acid refining—roasting—scandium oxide, due to limited mineral resources, mineral resources are not renewable, and this method of extracting scandium from minerals is expensive, resulting in scandium Products are not conducive to competition in the market
In addition, this scandium extraction method is easy to damage the ecological environment for mining of minerals, and will also cause certain pollution to the environment during the production process

Method used

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  • Scandium extraction method of river channel sedimentation
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  • Scandium extraction method of river channel sedimentation

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Embodiment Construction

[0037] specific implementation plan

[0038] Use the river silt of the Chongqing section of the Yangtze River, sample 60t, pebbles have been removed, and the maximum particle size is <2mm; 1. Select titanopyroxene concentrate from the silt

[0039] First use the sieve hole to classify the 80-mesh vibrating screen, then re-select the 80-mesh silt with the spiral concentrator and the spiral chute, and throw away 37.5% of the tailings. In order to increase scandium-containing products and ensure the dissociation of monomers, gravity-selected concentrates are combined into a closed-circuit cycle composed of ball mills and spiral classifiers. The particle size is controlled to 200 mesh and sent to weak magnetic separators. The magnetic product is iron concentrates. The non-magnetic part undergoes high-gradient magnetic separation, and 50.81% of the tailings can be thrown away. The concentrate is classified by a hydrocyclone to control the particle size to 400...

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Abstract

A process for extracting scandium (Sc) from the silt in river includes such steps as classifying, gravitational separation, magnetic dressing, electric dressing to obtain titanaugite concentrate, leaching, extracting, phase transfer, and purifying. Its advantages are high effect and low cost.

Description

technical field [0001] The invention relates to a method for extracting scandium, in particular to a method for extracting scandium products from river silt. Background technique [0002] Scandium is one of the basic raw materials of advanced materials in the 21st century and one of the emerging elements changing traditional industries. Its scope of use is in the rising and expanding period, and it is mainly used in high-tech fields such as aerospace. At present, scandium mostly occurs in natural minerals, and the minerals in nature are limited. At this stage, the common method for extracting scandium from minerals is: sample pretreatment—magnetic separation or (electric separation)—scandium Concentrate—hydrochloric acid plus co-solvent leaching—extraction—pickling—reverse extraction—oxalic acid refining—roasting—scandium oxide, due to limited mineral resources, mineral resources are not renewable, and this method of extracting scandium from minerals ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04B03B7/00C22B59/00
Inventor 汪友华
Owner 汪友华
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