含钒溶液制备五氧化二钒的研究现状

伍珍秀

doi:10.7513/j.issn.1004-7638.2023.02.002

含钒溶液制备五氧化二钒的研究现状

doi: 10.7513/j.issn.1004-7638.2023.02.002

伍珍秀

攀钢集团研究院有限公司, 钒钛资源综合利用国家重点实验室, 四川攀枝花 617000

基金项目: 国家自然科学基金资助项目（51964028）。

详细信息

作者简介:
伍珍秀，1978年出生，女，正高级工程师，主要从事钒渣提钒，钒铬渣提取分离钒、铬等相关工作，E-mail：wuzhenxiu@sohu.com

中图分类号: TF841.3
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- 被引次数: 0
出版历程
- 收稿日期: 2022-11-21
- 刊出日期: 2023-04-30

Research status of preparation of vanadium pentoxide from vanadium containing solution

Wu Zhenxiu

Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China

摘要

摘要: 含钒溶液主要采用铵盐沉淀、水解沉淀、三聚氰胺沉淀、还原沉淀等方法，获得钒化合物煅烧制备五氧化二钒。综述了碱性铵盐沉钒、弱酸性铵盐沉钒、酸性铵盐沉钒、水解沉钒、三聚氰胺沉钒，以及还原沉钒工艺的研究现状及优缺点，并综合分析了各沉钒工艺的pH值范围、铵耗量、五氧化二钒纯度及研究热点，指出未来产业化沉钒工艺必然会根据原料特点，结合终端产品、经济成本和环保需求，往多元化沉钒集成工艺发展；未来从钒溶液中制备五氧化二钒的实验室研究方向主要集中在高浓度钒液杂质及机理研究，沉钒新工艺研发。
- 五氧化二钒 /
- 含钒溶液 /
- 沉钒 /
- 铵盐沉钒 /
- 水解沉钒
Abstract: The vanadium containing solution is mainly used to obtain vanadium compound and then calcined to prepare vanadium pentoxide, by means of ammonium salt precipitation, hydrolytic precipitation, melamine precipitation, reduction precipitation and other methods. In this paper, the research status, advantages and disadvantages of vanadium precipitation methods were summarized, including weak acidic ammonium salt precipitation, acidic ammonium salt precipitation, hydrolysis, melamine sink and reduction technology. Meanwhile, the pH range, ammonium salt consumption, V₂O₅ purity and research hotspot in the precipitation process were comprehensively discussed. In the future, the industrialization of vanadium precipitation process will inevitably develop towards diversification and integration, according to the characteristics of raw materials, the requirements of terminal products, economic cost and environmental protection. The future research topic of the vanadium pentoxide preparation from vanadium solution in the laboratory may mainly focus on the impurities removal, the precipitation mechanism using high concentrated vanadium solution, and the development of new technology.
- vanadium pentoxide /
- vanadium solution /
- vanadium precipitation /
- vanadium precipitation with ammonium salt /
- hydrolytic vanadium precipitation

HTML全文

图 1 梯级阳离子置换法沉钒工艺流程

Figure 1. Process flow of vanadium precipitation by step cation displacement method

下载: 全尺寸图片幻灯片

图 2 不同pH值与钒浓度下的钒酸根存在形态

Figure 2. Existing form of vanadium at different pH values and vanadium concentrations

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图 3 三聚氰胺沉钒流程

Figure 3. Vanadium precipitation process of melamine

下载: 全尺寸图片幻灯片

表 1 钒溶液制备五氧化二钒沉淀工艺综合分析

Table 1. Comprehensive analysis of precipitation process for preparation of vanadium pentoxide from vanadium solution

沉钒方式	pH范围	铵盐量	沉钒率	五氧化二钒纯度	研究热点
碱性铵盐	8.0～9.5	多	低	高	高纯偏钒酸铵制备；循环利用新技术
弱酸性铵盐	4.0～6.0	少	一般	低	联合工艺制备高纯钒；减少铵盐用量
酸性铵盐	1.8～3.0	一般	高	较高	高浓度钒液沉钒；高密度APV制备；产品杂质影响；沉钒工艺优化
水解	1.8～3.0	无	低	低	高浓度钒液沉钒；无铵沉钒；复杂含钒体系初步提钒
三聚氰胺	2.0	有机胺	较高	较高	高浓度钒液沉钒
还原	8.0	无	低	一般	无铵沉钒；循环利用新技术

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