The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2014
Filed:
Apr. 27, 2011
Dazhao Gu, Beijing, CN;
Yinshan Jiang, Beijing, CN;
Cundi Wei, Beijing, CN;
Jianguo Han, Beijing, CN;
Deli Yu, Beijing, CN;
Zhaohua Guo, Beijing, CN;
Yixin Zhao, Beijing, CN;
Ping Zou, Beijing, CN;
Chunbin Guo, Beijing, CN;
Dazhao Gu, Beijing, CN;
Yinshan Jiang, Beijing, CN;
Cundi Wei, Beijing, CN;
Jianguo Han, Beijing, CN;
Deli Yu, Beijing, CN;
Zhaohua Guo, Beijing, CN;
Yixin Zhao, Beijing, CN;
Ping Zou, Beijing, CN;
Chunbin Guo, Beijing, CN;
China Shenhua Energy Company Limited, Beijing, CN;
Abstract
Disclosed is a method for extracting gallium from fly ash, which comprises the following steps: crushing the fly ash and removing Fe by magnetic separation; then dissolving it by using hydrochloric acid to obtain hydrochloric acid leachate; adsorbing gallium contained in the hydrochloric acid leachate with macro-porous cationic resin, followed by eluting to obtain an eluent containing gallium; adding masking agent to mask ferric ion to obtain an eluent containing gallium after masking; adsorbing gallium in the eluent containing gallium after masking with macro-porous cationic resin, followed by eluting to obtain a secondary eluent; adding sodium hydroxide solution into the secondary eluent to react; filtering and removing precipitates after reaction, and then concentrating the filtrate and electrolyzing to obtain metal gallium. The method simplifies the process and improves extraction efficiency of gallium.