A method for extracting vanadium by multi-stage roasting of stone coal vanadium ore and enhanced acid-mixing aging

A technology for stone coal mine and stone coal vanadium, which is applied in the field of multi-stage roasting and strengthening of acid mixing and ripening for vanadium extraction in stone coal and vanadium mine, can solve problems such as safety, environment, problems, etc., and achieves improvement of oxidation rate and leaching rate, simple process and effect. good effect
CN111304464BActive Publication Date: 2021-06-15NORTHEASTERN UNIV LIAONING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEASTERN UNIV LIAONING
Publication Date
2021-06-15

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Abstract

A method for extracting vanadium from stone coal vanadium ore by multi-stage roasting and intensified acid-mixing aging, which is carried out according to the following steps: (1) crushing and grinding the block of stone coal vanadium ore to make stone coal ore powder; (2) making hot flue gas stone The coal ore powder is transported to the suspension roasting device, and it is stored and roasted at 700-900°C to form the heat-storing stone coal powder; (3) it is transported to the decarbonization roasting device, and air is introduced; the heat-storing stone coal powder is suspended and heated at 500-800°C Decarburization roasting; (4) Pass mixed gas into the crystal breaking roasting device, and the decarburized material is oxidized in the crystal breaking roasting device at 750-900°C to form a broken crystal roasting material; (5) Add water and sulfuric acid solution and Stir and mix evenly, ripen at 140-200°C, and cool to normal temperature; (6) Mix with water to extract vanadium by water leaching, and filter and separate. The method of the invention has high vanadium leaching rate, simple process, energy-saving and environment-friendly equipment, and easy industrial application.
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Description

technical field

[0001] The invention belongs to the technical field of vanadium extraction from stone coal, and in particular relates to a method for extracting vanadium from stone coal vanadium ore by multi-stage roasting and strengthening acid-mixed aging. Background technique

[0002] Vanadium is a very important strategic resource, mainly used in iron and steel industry, aviation industry, nuclear industry, new energy and other fields. At the same time, my country's huge reserves of vanadium resources rank first in the world. Vanadium-containing stone coal is the main form of vanadium resources in my country. According to the degree of weathering, stone coal is divided into primary type stone coal and weathered type stone coal. Among them, primary type stone coal is difficult to handle, and the production level of vanadium extraction from stone coal in my country is backward. , especially for weathered stone coal, the level of efficient vanadium extraction is low, resulti...

Claims

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