钒酸钠钙化-碳化铵沉法清洁制备钒氧化物新工艺

doi:10.11949/j.issn.0438-1157.20161511

化工学报 ›› 2017, Vol. 68 ›› Issue (7): 2781-2789.DOI: 10.11949/j.issn.0438-1157.20161511

钒酸钠钙化-碳化铵沉法清洁制备钒氧化物新工艺

王少娜¹, 杜浩^1,2, 郑诗礼¹, 刘彪¹, 闫红¹, 张懿¹

1 中国科学院过程工程研究所, 中国科学院绿色过程与工程重点实验室, 北京 100190;
2 中国科学院大学, 北京 100049

收稿日期:2016-10-26 修回日期:2017-04-10 出版日期:2017-07-05 发布日期:2017-07-05
通讯作者: 郑诗礼
基金资助:
国家自然科学基金项目（51404227）；国家重点基础研究发展计划项目（2013CB632605）。

New technology from sodium vanadate to vanadium oxide by calcification and carbonization-ammonium process

WANG Shaona¹, DU Hao^1,2, ZHENG Shili¹, LIU Biao¹, YAN Hong¹, ZHANG Yi¹

1 Key Laboratory for Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2016-10-26 Revised:2017-04-10 Online:2017-07-05 Published:2017-07-05
Contact: 10.11949/j.issn.0438-1157.20161511
Supported by:
supported by the National Natural Science Foundation of China (51404227) and the National Basic Research Program of China (2013CB632605).

摘要/Abstract

摘要：

钒酸钠的后续产品转化是钒渣亚熔盐法钒铬共提清洁生产工艺的关键环节，针对钒酸钠产品转化提出了钒酸钠钙化-碳化铵沉法清洁制备钒氧化物新工艺，系统研究了钒酸钠钙化、钒酸钙碳化铵化、偏钒酸铵冷却结晶等几个重要工序。结果表明：通过钙化-碳化铵化-偏钒酸铵结晶可实现钒酸钠产品清洁制备钒氧化物，钒回收率达96.99%，所得钒氧化物产品V₂O₅质量分数达98.53%以上，且从源头避免了高盐氨氮废水的产生，工艺清洁环保。

关键词: 亚熔盐, 钒酸钠, 溶解性, 溶液, 结晶, 分离

Abstract:

A new process which transforms sodium vanadate, the intermediate product during the previous vanadium-chromium co-extraction by vanadium slag sub-molten salt process, to vanadium oxide using calcification and carbonization-ammonium method was proposed. The calcification of sodium vanadate, carbonization-ammonium of calcium vanadate, and cooling crystallization of ammonium vanadate were systematically studied. The results showed that vanadium oxide prepared by sodium vanadate can be realized by calcification and carbonization-ammonium method. Vanadium recovery rate can arrive at 96.99% and the purity of product V₂O₅ over 98.53% (mass fraction). The production of high salt ammonia nitrogen wastewater was avoided from source, and environmental-friendly was realized.

Key words: sub-molten salt, sodium vanadate, solubility, solution, crystallization, separation

中图分类号:

TF111

王少娜, 杜浩, 郑诗礼, 刘彪, 闫红, 张懿. 钒酸钠钙化-碳化铵沉法清洁制备钒氧化物新工艺[J]. 化工学报, 2017, 68(7): 2781-2789.

WANG Shaona, DU Hao, ZHENG Shili, LIU Biao, YAN Hong, ZHANG Yi. New technology from sodium vanadate to vanadium oxide by calcification and carbonization-ammonium process[J]. CIESC Journal, 2017, 68(7): 2781-2789.

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钒酸钠钙化-碳化铵沉法清洁制备钒氧化物新工艺

New technology from sodium vanadate to vanadium oxide by calcification and carbonization-ammonium process

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