Acid-method regenerative organic phase process in vanadium extraction cycle

An organic phase and extraction technology, applied in the field of acid regeneration organic phase process, can solve the problems of increased cost, required equipment, large organic phase loss, etc., and achieves the effects of cost saving, cost reduction and consumption saving.

Inactive Publication Date: 2010-04-21
SHAANXI JINGMAO INVESTMENT
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  • Abstract
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AI Technical Summary

Problems solved by technology

Alkali regeneration has the disadvantages of large alkali consumption, large loss of organic phase, and more equipment required, which also increases a lot of costs virtually.

Method used

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  • Acid-method regenerative organic phase process in vanadium extraction cycle
  • Acid-method regenerative organic phase process in vanadium extraction cycle
  • Acid-method regenerative organic phase process in vanadium extraction cycle

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Embodiment Construction

[0028] A process for regenerating the organic phase by acid method in the extraction cycle of vanadium extraction. In the extraction cycle, sulfuric acid solution with a concentration of 250-300g / l is used as the regeneration agent for the regeneration of the solvent-extracted lean organic phase; the flow rate of the lean organic phase and the regeneration agent The ratio is 10 to 15:1. When the impurity concentration of the lean organic phase is high, increase the flow rate of the regenerant, usually 10:1 is sufficient, otherwise it is better to be as small as 15:1; the lean organic phase and the regenerated water phase are in a mixed system The volume ratio (contact ratio) is preferably 1.2 to 1.5:1. When the contact ratio is less than 1.2:1, the water phase will appear as a continuous phase, which is not conducive to phase separation, and will reduce the time required for regeneration. Affect the regeneration efficiency; when the contact ratio is greater than 1.5:1, the rege...

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Abstract

The invention provides an acid-method regenerative organic phase process in vanadium extraction cycle, which is characterized in that the regeneration of solvent-extraction poor organic phase in extraction cycle adopts sulfuric acid solution with the concentration between 250 and 300 g / l as regenerant; the flow ratio of the poor organic phase to the regenerant is 10-15:1; the volume ratio (contact phase ratio) of the poor organic phase to regeneration aqueous phase in a mixed system is 1.2-1.5:1; and regeneration temperature is controlled between 40 and 50 DEG C. The process has the advantages of producing no three-phase material during regeneration, leaving out three-phase separation tank necessary in alkali-method regeneration, reducing the accompanying loss of organic phase caused by the generation of iron, aluminum and other hydroxide precipitates in the alkali-method regeneration, reducing the cost of products per ton and saving 12,000 yuan for the cost of products per ton and one million yuan for investment in regeneration equipment.

Description

technical field [0001] The invention relates to a process for regenerating an organic phase in an extraction cycle for extracting vanadium, in particular to an acid method for regenerating an organic phase in an extraction cycle for extracting vanadium. Background technique [0002] As we all know, vanadium-containing stone coal is one of the unique and rich vanadium resources in my country, but for a long time, the vanadium extraction process from vanadium-containing stone coal has been dominated by the classic salt roasting process. development requirements; second, the recovery rate of vanadium is extremely low, usually ≤ 50%, such a low recovery rate is also a great waste of my country's rich vanadium-containing stone coal resources; third, the degree of mechanized continuous operation is poor, especially The original two-step vanadium sinking method is difficult to scale up. For this reason, this old technology has been discontinued or banned by the government. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/26C22B34/22
CPCY02P10/20
Inventor 印国信
Owner SHAANXI JINGMAO INVESTMENT
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