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Method for extracting vanadium efficiently from vanadium slag by controlling particle diameter of additive

An additive and particle size technology, applied in the field of vanadium extraction, can solve the problems of high additive content, adverse production effects, low productivity, etc., and achieve the effects of reducing adhesion, reducing production costs, and improving utilization efficiency

Inactive Publication Date: 2013-12-04
CHONGQING UNIV
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Problems solved by technology

Moreover, if the mixing of vanadium slag and additives is not uniform enough, it will also cause excessive local additive content, resulting in low productivity and adverse effects on production

Method used

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  • Method for extracting vanadium efficiently from vanadium slag by controlling particle diameter of additive
  • Method for extracting vanadium efficiently from vanadium slag by controlling particle diameter of additive
  • Method for extracting vanadium efficiently from vanadium slag by controlling particle diameter of additive

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Embodiment Construction

[0030] The invention proposes a method for realizing high-efficiency roasting and leaching of vanadium slag by comprehensively considering the particle size of additives. This method reduces the agglomeration of additives by determining the particle size range of reasonable additives, makes it easier to mix uniformly with vanadium slag, and prevents local additive content from being too high or too low, so that the additive can reach a higher level. Utilize efficiency, and on this basis, appropriately reduce the amount of additives to reduce production costs, reduce production failures, and finally achieve refined production.

[0031] The specific technical scheme of the present invention is: adding a sodium salt additive with a certain suitable particle size to the vanadium slag and mixing uniformly to obtain a mixture; roasting the mixture in an oxidizing atmosphere to obtain a vanadium-containing roasted clinker; and then roasting the roasted clinker Grinding to a certain p...

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Abstract

The invention discloses a method for extracting vanadium efficiently from vanadium slag by controlling the particle diameter of additive. A sodium salt roasting vanadium extraction technology is adopted in the method, and when the additive is added in the vanadium slag, the particle diameter of the additive is determined through the following steps of (1) calculating the ratio between the particle number of the vanadium slag and the particle number of the additive based on the stacking density of the vanadium, the stacking density of the additive and the dosage of the additive to obtain an ideal particle diameter of the additive, and (2) taking the particle diameter of the vanadium slag, an original particle diameter of the additive, the ideal particle diameter of the additive and a final particle diameter of the additive as boundary points to obtain the ranges of the three sections of the particle diameters of the additive, taking the particle diameter of the additive as a variable, carrying out comparison on sodium salt roasting leaching based on a single factor analysis method, and taking the particle diameter range with the optimal result as the final particle diameter of the additive. The method for extracting the vanadium efficiently from the vanadium slag by controlling the particle diameter of the additive can reduce the caking phenomenon of the additive, materials are mixed more evenly, and the utilization efficiency of the additive and the roasting conversion rate of the vanadium slag are improved.

Description

technical field [0001] The invention relates to a method for realizing high-efficiency vanadium extraction from vanadium slag by controlling the particle size of additives, and belongs to the technical field of vanadium extraction. Specifically, this method adopts reasonable additive particle size and process parameters, through sodium roasting and water immersion treatment, converts water-insoluble vanadium in vanadium slag into water-soluble vanadate and obtains vanadium-containing leachate to achieve high-efficiency extraction The purpose of vanadium element in vanadium slag. [0002] Background technique [0003] Vanadium is an important valuable metal element. Due to its excellent physical properties such as tensile strength, hardness and fatigue strength, it is widely used in steel, non-ferrous metals, chemical industry and electronics industries. It plays an important role in the national economy and people's daily production. Play an active and important role in li...

Claims

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Application Information

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IPC IPC(8): C22B7/04C22B34/22
CPCY02P10/20
Inventor 陈登福徐松龙木军范鹤林龙海军刘祥海
Owner CHONGQING UNIV
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