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 ›› 2011, Vol. 43 ›› Issue (10): 48-.

• 论文 • 上一篇    下一篇

氟硅酸、硼酸制备氟硼酸钾工艺研究

杨水艳   

  1. 多氟多化工股份有限公司,河南焦作 454191
  • 发布日期:2011-10-19

Research on potassium fluoborate production process by fluosilicic acid and boric acid

 YANG  Shui-Yan   

  1. Do-Fluoride Chemicals Co.,Ltd.,Jiaozuo 454191,China
  • Published:2011-10-19

摘要: 详细介绍了利用磷肥副产的氟硅酸和硼酸反应生产高附加值的氟硼酸钾的工艺方法。通过对工艺的研究,叙述了该工艺的反应原理、工艺流程、工艺控制、主要设备及设备的优越性。通过实验表明,利用氟硅酸中的氟与硼酸反应生产氟硼酸和白炭黑,氟硼酸与氯化钾反应生成氟硼酸钾的方法可行。氟、硼反应温度在75~85 ℃、时间为2.5~3 h转化率较高,氯化钾需按理论量加入,产品质量稳定。该工艺利用磷肥行业副产的氟硅酸制备氟硼酸钾,将氟硅酸中的氟转化为氟硼酸钾,硅转化为白炭黑,不仅实现了资源综合利用,而且将生产废弃物转化为新的产品创造了新的利润增长点,节约了化石资源萤石,同时较氢氟酸法成本有大幅度下降,该方法将会成为未来氟硼酸钾生产的发展趋势。

关键词: 氟硅酸, 硼酸, 氟硼酸钾, 白炭黑

Abstract: Production process of high value-added potassium fluoborate by phosphate fertilizer by-products fluosilicic acid and boric acid was introduced in detail.Reaction principle of the process,process flow,process control,main equipment,and the advantages of equipment were described.Experiment showed the method that uses the fluorine in fluosilicic acid to react with boric acid to produce fluoboric acid and silica and fluoboric acid react with potassium chloride to produce potassium fluoborate is feasible.When the reaction temperature of F and B was at 75~85 ℃ and time was at 2.5~3 h,the conversion rate was high;and when the potassium chloride was added according to the theoretical value,the product quality was stable.Process using fluosilicic acid,a by-product from phosphate fertilizer industry to produce potassium fluoborate,making silicon convert into silica,not only realized comprehensive utilization of resources,but also create a new profit growth point as utilizing the waste to produce new product and saved the fossil resources of fluorite.Meanwhile,it had a significant decline in the cost comparing with hydrofluoric acid method.Therefore,it will be a future trend of potassium fluoroborate production. 

Key words: fluosilicic acid, boric acid, potassium fluoborate, silica

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