钒铬溶液中杂质砷的去除工艺

金属矿山 ›› 2016, Vol. 45 ›› Issue (04): 169-171.

钒铬溶液中杂质砷的去除工艺

蒋霖^1,2，伍珍秀^1,2，罗翔^1,2,3

1.攀钢集团研究院有限公司，四川攀枝花 617000；2.钒钛资源综合利用国家重点实验室，四川攀枝花 617000；3.昆明理工大学化学工程学院，云南昆明 650500

出版日期:2016-04-15 发布日期:2016-08-16
基金资助:
基金项目国家重点基础研究发展计划（973计划）项目（编号：2013CB632600）。

Removing Process of Arsenic from the Solution Containing Vanadium and Chromium

Jiang Lin^1,2，Wu Zhenxiu^1,2，Luo Xiang^1,2,3

1.Pangang Group Research Institute Co.，Ltd.，Panzhihua 617000，China；2.State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization，Panzhihua 617000，China；3.School of Chemical Engineering,Kunming University of Science and Technology，Kunming 650500，China

Online:2016-04-15 Published:2016-08-16

摘要/Abstract

摘要： 以浓度为30%的H₂O₂作为氧化剂、Fe₂（SO₄）₃为除砷剂，采用砷酸铁沉淀法对钒铬溶液进行除砷条件试验。结果表明：在反应初始pH=3.0、n(Fe)/n(As)=5、反应温度为40 ℃、反应时间为2 h条件下，钒铬溶液除砷率可达92.07%，钒、铬损失率均在5%以下。最佳除砷条件下获得的钒铬溶液经浓硫酸水解，水解产物沉淀过滤后添加硫酸铵纯化，纯化物烘干后在温度为500 ℃的马弗炉中煅烧3 h，最后得到粉状V₂O₅，可以满足YB/T 5304—2011中牌号V₂O₅ 98质量要求。

关键词: 钒铬溶液, 砷酸铁, 除砷率, V₂O₅

Abstract: Iron arsenate precipitation method has been used to remove the arsenic from vanadium and chromium solution with concentration of 30% H₂O₂ as oxidant，Fe₂（SO₄）₃ for arsenic removal agent.The results showed that:with the initial reaction pH=3.0，n(Fe)/n(As)=5，at reaction temperature of 40 ℃for 2 h，arsenic removal rate of chrome and vanadium solution can reach 92.07%，both vanadium and chromium loss rate is under 5%.Chrome vanadium solution obtained by the optimum condition via concentrated sulfuric acid hydrolysis，the hydrolysate precipitation filtration after adding ammonium sulfate purification，purification products calcinated in the muffle furnace at temperature of 500 ℃ for 3 h，the final powder V₂O₅ can satisfy YB/T 5304-2011 in the brand V₂O₅ 98 quality requirements.

Key words: Vanadium and chromium solution, Iron arsenate, Arsenic removal rate, V₂O₅

蒋霖, 伍珍秀, 罗翔. 钒铬溶液中杂质砷的去除工艺[J]. 金属矿山, 2016, 45(04): 169-171.

JIANG Lin, Wu-Zhen-Xiu, LUO Xiang. Removing Process of Arsenic from the Solution Containing Vanadium and Chromium[J]. Metal Mine, 2016, 45(04): 169-171.

扫码分享