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Method for extracting vanadium from vanadium containing material

A material and clinker technology, applied in the field of vanadium slag hydrometallurgy and vanadium chemical industry, can solve the problems of waste and increase production cost, and achieve the effect of saving consumption, reducing consumption and efficient extraction

Active Publication Date: 2017-07-21
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the process of vanadium extraction by leaching with ammonium salt, the ammonium salt can react completely with the vanadium slag only when the ammonium salt solution is maintained at a relatively high concentration. The ratio of ammonium salt and vanadium slag is too high, and only a small part of the ammonium salt participates in the reaction. Caused great waste and increased production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (1) Put V 2 o 5 The vanadium-titanium magnetite with a content of 15% is roasted at 850°C;

[0064] (2) After the roasted clinker obtained in step (1) is treated by a waste heat recovery device, the temperature is reduced to 200 ° C, and then the clinker is crushed by wet ball milling, so that the proportion of the clinker with a particle size of -100 mesh is 70%, and filtered Finally, the moisture content of the clinker is 20%;

[0065] (3) ammonium bicarbonate and the clinker obtained after step (2) are filtered prepare reaction mass by the mass ratio of 1:10, add the stearic acid of 0.5wt% in reaction mass simultaneously;

[0066] (4) Add the reaction materials into the drum reactor, raise it to 45° C. for 1 hour at a rate of 1.5° C. / min, and control the rotating speed of the reactor to be 8 r / min;

[0067] (5) Place the ammonified material obtained in step (4) in a drum reactor with a pressure of -100pa, raise the temperature to 80°C at a rate of 1°C / min and keep...

Embodiment 2

[0071] (1) Put V 2 o 5 The vanadium-titanium magnetite with a content of 15% is roasted at 880°C;

[0072] (2) After the roasted clinker obtained in step (1) is treated by a waste heat recovery device, the temperature is reduced to 230° C., and then the clinker is crushed by wet ball milling, so that the proportion of the clinker with a particle size of -100 mesh is 73%, and filtered Finally, the moisture content of the clinker is 23%;

[0073] (3) ammonium carbonate and the clinker obtained after step (2) are filtered prepare reaction mass by the mass ratio of 1:5, add the stearic acid of 0.6wt% in reaction mass simultaneously;

[0074] (4) Put the reaction materials into the drum reactor, raise it to 47°C at a rate of 1.5°C / min and keep it warm for 1.2h, and control the rotational speed of the reactor to be 10r / min;

[0075] (5) Place the ammonified material obtained in step (4) in a drum reactor with a pressure of -130pa, raise the temperature to 85°C for 2.5h at a rate ...

Embodiment 3

[0079] (1) Put V 2 o 5 Vanadium-titanium magnetite with a content of 17% is roasted at 900°C;

[0080] (2) After the roasted clinker obtained in step (1) is treated by a waste heat recovery device, the temperature is reduced to 250° C., and then the clinker is crushed by wet ball milling so that the proportion of the clinker with a particle size of -100 mesh is 75%, and filtered Finally, the moisture content of the clinker is 25%;

[0081] (3) Ammonium bicarbonate and the clinker obtained after step (2) are filtered prepare reaction mass by the mass ratio of 1:4, add the stearic acid of 0.7wt% in reaction mass simultaneously;

[0082] (4) Put the reaction materials into the drum reactor, raise it to 40° C. for 1.5 hours at a rate of 1.2° C. / min, and control the rotational speed of the reactor to be 12 r / min;

[0083] (5) Place the ammonified material obtained in step (4) in a drum reactor with a pressure of -200pa, raise the temperature to 90°C at a rate of 1.5°C / min and ke...

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Abstract

The invention relates to a method for extracting vanadium from a vanadium containing material. The vanadium containing material is sintered, and clinker is obtained; then the clinker is mixed with ammonium salt and stearic acid, the mass ratio of the ammonium salt to the clinker is 1: (1-10), and reaction materials are obtained; and the reaction materials are sequentially subjected to the amination reaction and the deamination reaction, and then vanadium-containing lixivium is obtained. By means of the method, efficient vanadium extraction is achieved, the vanadium extraction rate reaches 95% or above, the usage amount of the ammonium salt is greatly reduced, and the production cost is reduced; and meanwhile the problem of amination material attachment in a roller reactor under the condition of the low liquid-solid ratio is solved. By means of the method, simple and clean separation of vanadium can be achieved, the water consumption amount and the slag discharging amount are reduced, meanwhile, dust and waste gas harmful to people and the environment cannot be generated, the reaction energy consumption is obviously reduced, and industrial popularization is facilitated.

Description

technical field [0001] The invention relates to the fields of vanadium slag hydrometallurgy and vanadium chemical industry, in particular to a method for extracting vanadium from vanadium-containing materials. Background technique [0002] Vanadium slag is the collective name for the slag containing vanadium oxide obtained by oxidation blowing of vanadium-containing molten iron ore by wet extraction of vanadium-containing iron ore in the process of vanadium extraction. It is the main raw material for the production of vanadium products in the world. The global production capacity of vanadium products is nearly 80%, and it is also the main raw material for vanadium extraction in Panxi and Chengde regions of my country. [0003] Vanadium slag can be directly obtained metallurgical grade vanadium products after sodium calcination-water immersion-ammonium precipitation, but due to the high content of heavy metals (Cr, Mn, Fe, Ti, etc.) and silicon impurities in vanadium slag, the...

Claims

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Application Information

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IPC IPC(8): C22B34/22C22B7/00
CPCC22B7/001C22B34/22Y02P10/20
Inventor 李兰杰王海旭杜浩刘彪
Owner HEBEI IRON AND STEEL
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