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 ›› 2015, Vol. 47 ›› Issue (5): 21-.

• 论文 • 上一篇    下一篇

从江陵凹陷富钾地下卤水中提取硼酸

张秀峰1,2,3,谭秀民1,2,3,张利珍1,2,3,马亚梦1,2,3   

  1. 1.中国地质科学院郑州矿产综合利用研究所,河南郑州450006;2.国家非金属矿资源综合利用工程技术研究中心;
    3.国土资源部多金属矿评价与综合利用重点实验室
  • 出版日期:2015-05-10 发布日期:2015-05-06

Extraction of boric acid from potassium-rich underground brine in Jiangling Depression

Zhang Xiufeng1,2,3,Tan Xiumin1,2,3,Zhang Lizhen1,2,3,Ma Yameng1,2,3   

  1. 1.Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China;
    2.China National Engineering Research Center for Utilization of Industrial Minerals;
    3.Key Laboratory for Polymetallic Ores′Evaluation and Utilization,MLR
  • Published:2015-05-10 Online:2015-05-06

摘要: 江陵凹陷地下卤水资源丰富,w(氯化钠)=23.3%、w(氯化钾)=1.4%、ρ(氧化硼)=2.48 g/L,均为工业品位的2倍以上。根据卤水中氯化钠浓度接近饱和的特征,通过蒸发析钠以浓缩富集硼,确定了最佳的浓缩倍数为4.0,氧化硼质量浓度由2.48 g/L富集到9.84 g/L;采用溶剂萃取法分离硼,在最佳条件下,单级萃取率为96.73%,反萃取率为98.81%;富硼反萃液经蒸发浓缩、酸化沉淀制取硼酸产品,其质量达到国家标准GB/T 538—2006《工业硼酸》的一等品指标要求,硼的总收率为82.63%。

关键词: 江陵凹陷, 地下卤水, 硼酸, 萃取, 反萃取

Abstract: The underground brine in Jiangling Depression is rich in a variety of resources.The concentrations of sodium chloride,potassium chloride,and boron trioxide in the brine are 23.3%(mass fraction),1.4%(mass fraction),and 2.48 g/L,respectively,which are more than two times of their industrial grade.According to the characteristics of  sodium chloride in brine close to its saturation degree,boron trioxide enriched from 2.48 g/L to 9.84 g/L at the best concentration multiple of four times by the precipitation of sodium chloride through evaporation.Then,boron was separated by solvent extraction method, with the single-stage extraction yield of 96.73% and the stripping efficiency of 98.81%.Boric acid product was prepared by the evaporation and acidification to the strip liquor, with its quality achieving the requirements for the first class of Industrial Boric Acid,GB/T 538—2006.The total recovery fraction of boron was 82.63%.

Key words: Jiangling Depression, underground brine, boric acid, extraction, stripping

中图分类号: