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High-purity zirconium oxychloride extraction process

A technology of high-purity zirconium oxychloride and pure zirconium oxychloride, which is applied in the field of high-purity zirconium oxychloride extraction technology, can solve the problems of "three wastes", discontinuous alkali fusion sintering process, and high labor intensity

Inactive Publication Date: 2020-04-17
山东鸿远新材料科技股份有限公司
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Problems solved by technology

[0004] The existing alkali-fusion sintering method produces zirconium oxychloride, and the outstanding problems are discontinuous alkali-fusion sintering process, low production efficiency, large energy consumption, low automation level, and high labor intensity; the problem of "three wastes" needs to be solved urgently, and the production of zirconium oxychloride A large amount of waste acid, waste alkali and waste residue will be produced in the process

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  • High-purity zirconium oxychloride extraction process

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Embodiment Construction

[0026] Below in conjunction with embodiment, further illustrate the present invention.

[0027] see figure 1 As can be seen, a kind of high-purity zirconium oxychloride extraction process of the present invention comprises the following steps:

[0028] (1) Alkali fusion process is to add zircon sand to caustic soda at 600°C and melt it for 15 minutes to obtain zirconium silicate and sodium silicate:

[0029] (2) Water washing and pressure filtration process, wash off the sodium silicate after water washing, form sodium silicate aqueous solution as a by-product for sale, zirconium silicate becomes filter cake after water washing and pressure filtration;

[0030] (3) Transformation process, after adding water to the filter cake in step (2) and stirring it into a slurry, adding mother liquor water to adjust the pH value to 6.5---7.5, and then press-filtering to form a filter cake;

[0031] (4) Acidification process. The filter cake in step (3) is mixed with eluent to form a slu...

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Abstract

The invention discloses a high-purity zirconium oxychloride extraction process, which comprises the following steps: (1) alkali fusion, (2) water washing and filter pressing, (3) transformation, (4) acidification, (5) primary cooling crystallization, (6) dissolution and filtration, (7) extraction, (8) concentration, (9) secondary crystallization and (10) acid washing and filtration. According to the invention, an extraction process is added after the filter-pressing silicon removal process; ferric oxide and some impurities in the clear liquid are extracted into an extracting agent by using theextracting agent, so that the content of the impurities in the clear liquid is reduced, the content of the ferric oxide can be controlled to be below 1ppm, the residual impurities in the crystal areleached out by using a leaching method, the content of the impurities is reduced, and the main content of the product is increased.

Description

technical field [0001] The present invention relates to, to be precise, a kind of high-purity zirconium oxychloride extraction process. Background technique [0002] Zirconium oxychloride is the main raw material for the manufacture of other zirconium products, used in textiles, leather, rubber additives, metal surface treatment agents, paint desiccants, refractory materials, ceramics, catalysts, fire retardants and other products. [0003] In recent years, with the rapid growth of my country's non-ferrous metal industry, the zirconium chemical industry has made great progress in production, import and export, environmental protection, energy saving, consumption reduction, emission reduction and scientific research applications. The development of technology, especially the production and application of zirconium-based or zirconium-containing modern ceramic materials for energy materials, optical materials, biological materials and environmental protection materials, is devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/00C01B33/32
CPCC01G25/003C01G25/00C01B33/32
Inventor 刘振明刘福来刘敬东
Owner 山东鸿远新材料科技股份有限公司
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