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Process for extracting vanadium from vanadium-containing iron ore concentrate pellets

A technology of ore pellets and ferrovanadium, applied in the direction of improving process efficiency, can solve the problems of low recovery rate of vanadium, loss of vanadium elements, long process flow, etc.

Inactive Publication Date: 2005-06-22
王洪东
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Problems solved by technology

This method has a long process flow, and the loss of vanadium element is large through the two processes of ironmaking and blowing vanadium slag, so the recovery rate of vanadium is low

Method used

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Embodiment Construction

[0005] The negative 200 mesh vanadium-containing iron concentrate powder is mixed with sodium salt of corresponding particle size and weight to make pellets, and the particle size is 10-20 mm. The pellets are roasted in a shaft furnace or a brick kiln, and the temperature is controlled at 600-1300 °C; the time is 3-5 hours, so as to maximize the conversion of vanadium in the pellets into soluble sodium vanadate.

[0006] The calcined pellets were immersed in water to dissolve the soluble sodium vanadate in the pellets into the water. In order to speed up the dissolution, the solution should be heated to above 90°C and agitation should be intensified. The solution is to soak the pellets multiple times and each batch of pellets is soaked with the solution multiple times. The concentration of vanadium in the solution increases continuously and the content of vanadium in the pellets decreases continuously; the leaching rate of vanadium reaches more than 85%. The leaching qualifi...

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Abstract

The invention provides a process for extracting vanadium from vanadium-containing iron ore concentrate pellets which comprises, charging right amount of sodium salt into iron concentrate powder, carrying out water dipping treatment to dissolve the soluble sodium vanadate into water, charging sulphuric acid into sodium vanadate solution, concentrating and mixing, agitating, precipitating vanadium pentoxide, filtering and drying into powdery or tablet form vanadium pentoxide end product.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and chemical industry. Background technique [0002] At present, the process of extracting vanadium from vanadium-containing iron ore is to sinter and smelt vanadium-containing iron concentrate powder into vanadium-containing molten iron; The vanadium slag is then processed to obtain a vanadium pentoxide product. This method has a long technological process and loses a lot of vanadium elements through the two processes of iron making and blowing vanadium slag, so the recovery rate of vanadium is low. SUMMARY OF THE INVENTION [0003] In the present invention, the vanadium-containing ferrous fine powder and the fine powder of sodium salt (sodium sulfate, sodium carbonate, etc.) are mixed to make pellets and roasted into sodiumized pellets; Dissolve into water to make sodium vanadate solution; add sulfuric acid to sodium vanadate solution to precipitate vanadium pentoxide product. The method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B3/04C22B3/46
CPCY02P10/20
Inventor 王洪东
Owner 王洪东
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