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 ›› 2020, Vol. 52 ›› Issue (1): 76-78.doi: 10.11962/1006-4990.2019-0083

• 环境·健康·安全 • 上一篇    下一篇

氟化铵溶解含氟硅渣制备氟硅酸铵的实验研究

隋岩峰1,2,刘松林1,2(),秦红1,2   

  1. 1. 中低品位磷矿及其共伴生资源高效利用国家重点实验室,贵州贵阳 550002
    2. 瓮福技术研究院
  • 收稿日期:2019-08-07 出版日期:2020-01-10 发布日期:2020-02-26
  • 通讯作者: 刘松林
  • 作者简介:隋岩峰(1981— ),男,硕士,高级工程师,主要从事氟、硅化工方面研究;E-mail:1223260229@qq.com。
  • 基金资助:
    贵州省科技计划项目(黔科合支撑[2017]2317)

Experimental study on preparation of ammonium fluosilicate from fluorinated silica slag dissolved by ammonium fluoride

Sui Yanfeng1,2,Liu Songlin1,2(),Qin Hong1,2   

  1. 1. State Key Laboratory of Efficient Utilization for Low Grade Phosphate Rock and Its Associated Resources,Guiyang 550002,China
    2. Wengfu Institute of Technology
  • Received:2019-08-07 Online:2020-01-10 Published:2020-02-26
  • Contact: Liu Songlin

摘要:

以氟化铵溶液和含氟硅渣为原料,通过化学溶解的方式,制备氟硅酸铵产品。考察了反应温度、反应时间、氟化铵溶液浓度和物料配比(氟化铵与二氧化硅的物质的量比)等不同工艺条件对氟硅酸铵收率、二氧化硅转化率的影响。实验结果表明:反应温度为93 ℃、反应时间为60 min、氟化铵溶液质量分数为20%~30%、物料配比为6∶1.1、反应体系搅拌速度为200~300 r/min时,氟硅酸铵的收率和氟化铵的转化率可控制在90%以上。

关键词: 氟化铵, 硅渣, 氟硅酸铵

Abstract:

Ammonium fluosilicate was prepared with ammonium fluoride solution and fluorinated silica slag as raw materials by chemical dissolution.The effects of reaction temperature,reaction time,concentration of ammonium fluoride solution and material ratio(amount-of-substance ratio of ammonium fluoride to silica) on the yield of ammonium fluosilicate and conversion of silicon dioxide were investigated.The experimental results showed that the reaction temperature was 93 ℃,the reaction time was 60 min,the mass fraction of ammonium fluoride solution was 20%~30%,the materials ratio was 6∶1.1 and the stirring speed of reaction system was at 200~300 r/min.Under the conditions,the yield of ammonium fluosilicate and the conversion of ammonium fluoride can be controlled over 90%.

Key words: ammonium fluoride, silicon slag, ammonium fluosilicate

中图分类号: