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 ›› 2014, Vol. 46 ›› Issue (5): 46-.

• 论文 • 上一篇    下一篇

磷肥副产氟硅酸制备无水氟化氢联产水玻璃的研究

1.云天化集团云南磷化集团有限公司,云南昆明 650113;2.国家磷资源开发利用工程技术研究中心   

  1. 1.云天化集团云南磷化集团有限公司,云南昆明 650113;2.国家磷资源开发利用工程技术研究中心
  • 出版日期:2014-05-10 发布日期:2014-05-07

Preparation of anhydrous hydrogen fluoride and sodium silicate with by-product hydrofluosilicic acid of phosphate fertilizer

1.Yunnan Phosphate Chemical Group Co.,Ltd.,Yunnan Yuntianhua Co.,Ltd.,Kunming 650113,China; 2.National Engineering Research Center of Phosphate Development and Utilization   

  1. 1.Yunnan Phosphate Chemical Group Co.,Ltd.,Yunnan Yuntianhua Co.,Ltd.,Kunming 650113,China;
    2.National Engineering Research Center of Phosphate Development and Utilization
  • Published:2014-05-10 Online:2014-05-07

摘要: 利用磷肥副产物氟硅酸制备无水氟化氢联产水玻璃,研究了其工艺原理及条件。其中氢氟酸各项指标均达到GB 7744—2008《工业氢氟酸》的要求,水玻璃作为低品位胶磷矿正浮选抑制剂,当原矿五氧化二磷品位为 22.71%、氧化镁和二氧化硅质量分数分别为3.21%和22.17%时,经正浮-粗-精-扫作业与反浮一次粗选作业选别后,获得最终精矿中五氧化二磷品位为29.99%、氧化镁质量分数为0.85%。该工艺具有经济技术可行,循环利用氟和硅资源,节能,环保等特点。

关键词: 氟硅酸, 无水氟化氢, 浮选抑制剂

Abstract: Process principles and conditions of the method for producing anhydrous hydrogen fluoride and sodium silicate using the by-product hydrofluosilicic acid of phosphate fertilizer were studied.All the indexes of hydrofluoric acid had reached the requirements of GB 7744—2008,and sodium silicate was used as low-grade phosphate rock flotation inhibitor.When P2O5 grade of ore was 22.71%,mass fractions of MgO and SiO2 were 3.21% and 22.17% respectively,after being a positive flotation-rough-fine sweep and a reverse flotation roughing operations,beneficiation indicators,such as P2O5 grate of the final concentrate of 29.99%,and MgO mass fraction of 0.85% were obtained.The process had the characteristics of economic and technical feasibility,fluorine and silicon resource recycling,energy conservation,and environmental protection etc..

Key words: hydrofluosilicic acid, anhydrous hydrogen fluoride, flotation inhibitor

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