Method for purifying and recovering caustic alkali for producing metal gallium through alkaline method

• Main Authors: FENG FENG, FENG YU
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2017
• Subjects: APPARATUS THEREFOR; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention discloses a method for purifying and recovering caustic alkali for producing metal gallium through an alkaline method. A precipitator containing barium ion salt or alkali is added into a new electrolyte solution, and the molar mass ratio of sulfate radicals to barium ions in the new electrolyte tail solution is 1: (0.8 to 1.4). The method for purifying and recovering the caustic alkali for producing the metal gallium through the alkaline method has the beneficial effects that not only can the sulfate radicals be eradicated, but also metal vanadium can be removed for purifying the electrolyte tail solution, so that the caustic alkali can be recovered as much as possible, and the aim of reducing the production cost is achieved. 本发明公开了种碱法生产金属镓苛性碱净化回收的方法，将含钡离子盐或者碱的沉淀剂加入到新电解液中，所述新电解尾液中的硫酸根与该钡离子的摩尔质量比为1:(0.8-1.4)。本发明的有益效果：既能将硫酸根除去也能将金属钒除去以净化电解尾液，从而尽可能的多回收苛性碱，达到降低生产成本之目的。