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 ›› 2013, Vol. 45 ›› Issue (4): 15-.

• 论文 • 上一篇    下一篇

盐湖卤水萃取提硼试验研究

张利珍1,2,谭秀民1,2,张秀峰1,2,李 琦1,2   

  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
  • 出版日期:2013-04-10 发布日期:2013-04-07

Experimental research on extracting boron from salt lake brine

Zhang Lizhen1,2,Tan Xiumin1,2,Zhang Xiufeng1,2,Li Qi1,2   

  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
  • Online:2013-04-10 Published:2013-04-07

摘要: 以西藏某盐湖卤水浓缩液为研究对象,对影响萃取和反萃取的诸多因素如料液酸度、萃取剂配比、萃取和反萃取时间、反萃取剂浓度、相比等进行了详细试验研究,获得了混合醇提硼适宜的萃取条件:原料液pH=3,混合醇萃取剂与磺化煤油的体积比V(2-乙基-1,3-己二醇)∶V(异辛醇)∶V(磺化煤油)=3∶7∶10,相比为1.0,萃取时间为 10 min;反萃取条件:反萃取剂浓度为0.3 mol/L,相比为1.0,反萃取时间为10 min。在此工艺条件下,萃取率>96%,反萃取率>95%。另外,在本原料液体系中,以二元醇与一元醇的混合醇作为萃取剂萃取硼,萃取效果远好于一元醇。

关键词: 2-乙基-1, 3-己二醇, 异辛醇, 硼, 萃取, 反萃取

Abstract: Experiments of extracting boron in concentrated brine from a Tibet salt lake were carried out.Various influencing factors of extracting and back extracting,such as acidity,volume ratio of extractant,the time of extraction and back extraction, the concentration of back-extractant,and phase ratio,were investigated in detail.The optimal technological conditions of boron extraction with mix alcohol were obtained as followed:pH of raw material liquid was 3;the volume ratio of organic phase was 3(2-ethyl-1,3-hex-anedio)∶7(isooctyl alcohol)∶10(sulfonated kerosene);the ratio of organic phase ratio was 1.0;the time of extraction was 10 min;and the back extraction conditions were:the concentration of back-extractant was 0.3 mol/L;phase ratio was 1.0;and back extraction time was 10 min.Under these conditions,the extraction rate and back extraction rate could reach over 96% and 95%,respectively.Furthermore,it was shown that the extraction efficiency of mixed alcohols was far better than that of monobasic alcohol.

Key words: 2-ethyl-1, 3-hexanedio, isooctyl alcohol, boron, extraction, back extraction

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