无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2019, Vol. 51 ›› Issue (12): 75-79.doi: 10.11962/1006-4990.2019-0072

• 无机盐工业 • 上一篇    下一篇

钒渣钠化焙烧熟料浸出液除磷工艺研究

董玉明1,2,3,朱光锦1,2,3,裴丽丽1,2,刘宏辉1,2,闫蓓蕾4,徐红彬1,2,张 懿1,2   

  1. 1.中国科学院绿色过程与工程重点实验室,北京 100190;2.中国科学院过程工程研究所湿法冶金 清洁生产技术国家工程实验室;3.中国科学院大学;4.攀钢集团研究院有限公司
  • 出版日期:2019-12-10 发布日期:2019-12-20
  • 作者简介:董玉明(1988— ),男,硕士研究生,工程师,研究方向钒湿法冶金;E-mail:ymduong@ipe.ac.cn。 通讯作者:徐红彬,男,博士,研究员;E-mail:hbxu@ipe.ac.cn。

Removal of phosphorus from leaching solution of sodium roasted vanadium slag clinker

Dong Yuming1,2,3,Zhu Guangjin1,2,3,Pei Lili1,2,Liu Honghui1,2,Yan Beilei4,Xu Hongbin1,2,Zhang Yi1,2   

  1. 1.Key Laboratory of Green Process and Engineering,Chinese Academy of Sciences,Beijing 100190,China;2.National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,Institute of Process Engineering,Chinese Academy of Sciences;3.University of Chinese Academy of Sciences;4.Pangang Group Research Institute Co.,Ltd.
  • Online:2019-12-10 Published:2019-12-20

摘要: 以钒渣钠化焙烧熟料浸出后得到的含钒溶液为原料,分析了二水硫酸钙在碱性条件下对含钒溶液中磷的去除机制,研究了二水硫酸钙用量、溶液pH、反应时间、反应温度等因素对磷去除率、钒损失率以及溶液中五氧化二钒与磷质量浓度比的影响。研究结果表明:在弱碱性条件下,二水硫酸钙可有效去除含钒溶液中的磷,磷去除率达到70%以上、钒损失率小于1%、五氧化二钒与磷质量浓度比大于2 300,满足后续沉钒的要求。确定的除磷工艺条件:二水硫酸钙与磷物质的量比为5.3,溶液pH为9.0,反应时间为30 min,反应温度为25 ℃。除磷后的含钒溶液经沉钒、洗涤、煅烧得到五氧化二钒产品,沉钒率大于99%,五氧化二钒产品质量满足YB/T 5304—2011《五氧化二钒》中99级的要求。

关键词: 含钒溶液;除磷;二水硫酸钙;五氧化二钒

Abstract: Using the vanadium containing solution,obtained from leaching sodium roasted vanadium slag clinker,as the raw material,the removal mechanisms of CaSO4·2H2O on the phosphorus in vanadium containing solution under the alkaline condition were analyzed.The effects of CaSO4·2H2O dosage,pH of solution,reaction time and reaction temperature on the removal efficiency of phosphorus,loss rate of vanadium and mass concentration ratio of V2O5 to P were studied.Results showed that phosphorus can be effectively removed from the vanadium containing solution under weak alkaline condition by using CaSO4·2H2O.The removal efficiency of phosphorus was higher than 70%,the loss rate of vanadium was lower than 1%,and the mass concentration ratio of V2O5 to P was higher than 2 300,which satisfied the requirements for the subsequent vanadi umprecipitation process.The optimum operation conditions for removing phosphorus were confirmed as follows:n(CaSO4· 2H2O)/n(P)=5.3,pH of solution was 9.0,reaction time was 30 min and reaction temperature was 25 ℃.Vanadium pentoxide was obtained from the phosphorus removed vanadium containing solution by vanadium precipitation,washing and calcinations.The yield of the vanadium precipitation process achieved as high as 99%,and the product quality satisfied the Level 99 requirements for the standard of Vanadium Pentoxide (YB/T 5304—2011).

Key words: vanadiumcontaining solution;phosphorus removal;CaSO4·2H2O;vanadium pentoxide

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