INORGANICCHEMICALSINDUSTRY ›› 2010, Vol. 0 ›› Issue (05): 0-0.

   

Utilization of fluorosilicic acid by-produced from phosphorus chemical industry and research progress in anhydrous hydrogen fluoride

Cao Qi,Zhang Zhiye,Wang Xinlong   

  • Online:2010-05-10 Published:2010-10-01

Abstract: <SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">With high-speed development of China</SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">′</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: "Times New Roman"; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">s fluorine industry,fluorine resources would be rapidly exhausted.Therefore how to recover and utilize the abundant fluorine resources existing in phosphate rocks became more and more important.Status of fluorine resources and current utilization situation of fluorosilicic acid by-produced from phosphorus chemical industry in China were summarized,and production of anhydrous hydrogen fluoride (AHF) as the best utilization way of fluorosilicic acid was put forward by comparing market situation of various kinds of fluorine-based chemicals made from fluorosilicic acid.In addition,some patents on AHF at home and abroad and research achievements in production of AHF from by-produced fluorosilicic acid at Sichuan University were reviewed in detail.At last,some corresponding countermeasures and suggestions were put forward in order to solve the existing problems in production of AHF from fluorosilicic acid. </SPAN>