Clean vanadium extraction method and system for vanadium-containing material
A material and clean technology, applied in the field of vanadium extraction system, clean vanadium-containing materials, can solve the problems of ammonium salt waste, poor working environment, low product purity, etc., to improve reaction efficiency, avoid difficult temperature control, and reduce reaction cost effect
Inactive Publication Date: 2021-10-22
承德钒钛新材料有限公司 +2
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[0004] Aiming at the technical problems of serious waste of ammonium salt in the vanadium extraction process of the existing ammonium salt leaching method, difficult equipment operation, poor working environment, and low product purity, the present invention provides a method for cleanly extracting vanadium from vanadium-containing materials and vanadium extraction system, the amount of ammonium salt is small and recyclable, the vanadium extraction process is simple and safe, and the product purity is improved while ensuring the vanadium extraction efficiency, which is conducive to the promotion of industrialization
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[0044] As a first embodiment, it specifically includes the following steps:
[0045] S1: Take vanadium slag and carry out blank roasting under high temperature conditions to obtain V-containing 2 o 5 Vanadium-containing material, the vanadium-containing material obtained after blank roasting, ammonia water and ammonium bicarbonate with a mass concentration of 20% are mixed uniformly in the mixing device at a ratio of 100:15:3.3, and then enter the granulation device for granulation. Control the particle diameter to 13 mm to obtain the ammonification-deammoniation raw material.
[0046] S2: The obtained ammonification-deamination raw material enters the ammonization area of the ammonization-deamination reaction device, reacts in the ammonization area at a constant temperature of 35°C for 70 minutes, then enters the drying area, and dries in the drying area at a constant temperature of 60°C for 48 minutes Then enter the deamination area, react in the deamination area at a co...
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Abstract
The invention relates to the technical field of chemical production, in particular to a clean vanadium extraction method and system for a vanadium-containing material. According to the method, the vanadium-containing material subjected to blank roasting, ammonia water and ammonium salt are uniformly mixed according to a certain proportion and then are granulated, and ammoniation-deamination reaction is carried out step by step, so that the technical problems that in the ammoniation-deamination process, a reaction system generates a large amount of gas due to mechanical stirring and difficult reaction temperature control, normal operation of equipment is influenced, and the working environment is polluted are solved; the problem of material wall attachment caused by local overheating in the ammoniation-deamination process can be avoided, ammonia gas generated in the deamination reaction can be collected and recycled for preparation of vanadium extraction auxiliary materials, namely ammonia water and ammonium salt, the whole vanadium extraction process can be carried out under normal pressure and is clean, efficient, simple and easy to control, and the vanadium extraction efficiency can be improved while the production cost is reduced.
Description
technical field [0001] The invention relates to the technical field of chemical production, in particular to a method for cleanly extracting vanadium from vanadium-containing materials and a system for extracting vanadium. Background technique [0002] Vanadium slag is a general term for vanadium oxide-containing materials obtained by oxidative blowing of vanadium-containing molten iron or vanadium-containing iron concentrate by wet extraction of vanadium in the process of vanadium extraction. It is the main raw material for smelting and producing vanadium alloys and metal vanadium. The vanadium slag treatment process of vanadium chemical raw materials is mostly a roasting process to recover vanadium, mainly including sodium roasting and calcification roasting, but sodium roasting will produce a large amount of high-salt ammonia nitrogen wastewater, high-sodium tailings and harmful kiln gas in the vanadium extraction process The calcification and roasting process has poor st...
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IPC IPC(8): C22B34/22C22B1/24C22B3/14
CPCC22B34/22C22B1/24C22B3/14Y02P10/20
Inventor 王海旭马瑞峰白丽赵备备朱立杰郝金生
Owner 承德钒钛新材料有限公司
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