Use of Mg(HCO3)2 and/or Ca(HCO3)2 aqueous solution in metal extractive separation and purification

US8721998B2 · kind B2 · utility

Assignee

• GRIREM ADVANCED MATERIALS CO., LTD. · CN

Inventors

• Xiaowei Huang · Hunan, CN
• Zhiqi Long · Beijing, CN
• Xinlin Peng · Beijing, CN
• Hongwei Li · Burnaby, CA
• Guilin Yang · Beijing, CN
• Dali Cui · Beijing, CN
• Chunmei Wang · 东风镇, CN
• Na Zhao · Beijing, CN
• Liangshi Wang · Beijing, CN
• Ying Yu · Beijing, CN

Key dates

• Filing date: Jan 14, 2010
• Grant date: May 13, 2014
• Expiry date: Oct 18, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The application of aqueous solution of magnesium bicarbonate and/or calcium bicarbonate in the process of extraction separation and purification of metals is disclosed, wherein the aqueous solution of magnesium bicarbonate and/or calcium bicarbonate is used as an acidity balancing agent, in order to adjust the balancing pH value of the extraction separation process which uses an acidic organic extractant, improve the extraction capacity of organic phase, and increase the concentration of metal ions in the loaded organic phase.