Research on Extracting Boron from Pingluo Underground Brines in Sichuan Basin by 2, 2, 4-Trimethyl-1, 3-Pentanediol
详细信息
- 责任者：Jiang Yunjiang (College of Material and Chemistry and Chemical Engineering ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Zeng Ying
- 刊名：Journal of Mineralogy and Petrology
- 出版年：2013
- 卷期：33(3)
- 页码：p.26-29
- issnNo：ISSN1001-6872
- isbnNo：CN51-1143/TD
摘要
Solvent extraction is a promising technique for recovery of boron from brine.Experiment of extracting boron was conducted by taking the brines from Pingluo of Sichuan Basin as raw material,and using 2,2,4-trimethyl-1,3-pentanediol dissolved in chloroform as extractant. The concentration of extractant,the time of extraction,the ratio of organic phase to brine,the acidity of brine,the stages of extraction,the extraction capacity,the concentration of stripping agent,and the ratio of organic phase containing boric acid to stripping phase and stripping stages were investigated.The optimal experimental parameters were obtained and listed as follows:concentration of extractant was 0.8mol/L,the ratio of organic phase to brine was 1∶1,the pH value of brine ranging from 1 to 6,the extraction time was 8minutes,the extraction capacity(extractant to boric acid)was 46.25g/L.Under the optimal conditions,the recovery ratio of boric acid reaches 90.62% by one-stage extraction and two-stage stripping.