Patents by Inventor Cundi Wei
Cundi Wei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 8728296Abstract: 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.Type: GrantFiled: April 27, 2011Date of Patent: May 20, 2014Assignee: China Shenhua Energy Company LimitedInventors: Dazhao Gu, Yinshan Jiang, Cundi Wei, Jianguo Han, Deli Yu, Zhaohua Guo, Yixin Zhao, Ping Zou, Chunbin Guo
-
Patent number: 8568671Abstract: Provided a method for preparing metallurgical-grade alumina by using fluidized-bed fly ash, comprising: a) removing iron by wet magnetic separation after crushing the fly ash; b) reacting the fly ash after magnetic separation with hydrochloric acid to obtain a hydrochloric leachate; c) passing the hydrochloric leachate through macro-porous cationic resin to deeply remove iron to obtain a refined aluminum chloride solution; d) concentrating and crystallizing the refined aluminum chloride solution to obtain an aluminum chloride crystal; and e) calcining the aluminum chloride crystal to obtain the metallurgical-grade alumina. The method is simple, the procedure is easy to be controlled, the extraction efficiency of alumina is high, the production coast is low, and the product quality is steady.Type: GrantFiled: April 27, 2011Date of Patent: October 29, 2013Assignee: China Shenhua Energy Company LimitedInventors: Zhaohua Guo, Cundi Wei, Peiping Zhang, Jianguo Han, Junzhou Chi, Yanbin Sun, Yixin Zhao
-
Patent number: 8505735Abstract: A vertical ring magnetic separator for de-ironing of coal ash comprises a rotating ring (101), an inductive medium (102), an upper iron yoke (103), a lower iron yoke (104), a magnetic exciting coil (105), a feeding opening (106), a tailing bucket (107) and a water washing device (109). The feeding opening (106) is used for feeding the coal ash to be de-ironed, and the tailing bucket (107) is used for discharging the non-magnetic particles after de-ironing. The upper iron yoke (103) and the lower iron yoke (104) are respectively arranged at the inner and outer sides of the lower portion of the rotating ring (101). The water washing device (109) is arranged above the rotating ring (101). The inductive medium (102) is arranged in the rotating ring (101).Type: GrantFiled: February 23, 2011Date of Patent: August 13, 2013Assignee: China Shenhua Energy Company LimitedInventors: Jianguo Han, Zhaohua Guo, Wenhui Zhang, Cundi Wei, Yongwang Wang, Shaonan Xu, Sa Lv, Hong Dong, Junzhou Chi, Jianmin Zhang, Qingan Nan
-
Publication number: 20130115149Abstract: Provided a method for preparing metallurgical-grade alumina by using fluidized-bed fly ash, comprising: a) removing iron by wet magnetic separation after crushing the fly ash; b) reacting the fly ash after magnetic separation with hydrochloric acid to obtain a hydrochloric leachate; c) passing the hydrochloric leachate through macro-porous cationic resin to deeply remove iron to obtain a refined aluminum chloride solution; d) concentrating and crystallizing the refined aluminum chloride solution to obtain an aluminum chloride crystal; and e) calcining the aluminum chloride crystal to obtain the metallurgical-grade alumina. The method is simple, the procedure is easy to be controlled, the extraction efficiency of alumina is high, the production coast is low, and the product quality is steady.Type: ApplicationFiled: April 27, 2011Publication date: May 9, 2013Applicant: CHINA SHENHUA ENERGY COMPANY LIMITEDInventors: Zhaohua Guo, Cundi Wei, Peiping Zhang, Jianguo Han, Junzhou Chi, Yanbin Sun, Yixin Zhao
-
Publication number: 20130081954Abstract: 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 hydrochloride 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.Type: ApplicationFiled: April 27, 2011Publication date: April 4, 2013Applicant: CHINA SHENHUA ENERGY COMPANY LIMITEDInventors: Dazhao Gu, Yinshan Jiang, Cundi Wei, Jianguo Han, Deli Yu, Zhaohua Guo, Yixin Zhao, Ping Zou, Chunbin Guo
-
Publication number: 20130068628Abstract: 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 hydrochloride acid (2) to obtain hydrochloric acid leachate; adsorbing gallium in the hydrochloric acid leachate with macro-porous cationic resin, followed by eluting to obtain the eluent (5) containing gallium; adding sodium hydroxide (6) solution into the eluent containing gallium to react and obtaining sodium metaaluminate solution containing gallium (8); introducing CO2 into the sodium metaaluminate solution containing gallium (8) for carbonation, followed by separating gallium from aluminum and obtaining aluminum-gallium double salt (15) with the gallium to alumina mass ratio being more than 1:340; adding the aluminum-gallium double salt (15) into sodium hydroxide (17) to react, followed by alkalinity-adjustment concentration to obtain alkali solution containing gallium and aluminum; electrolyzing (10) the alkali solutionType: ApplicationFiled: April 27, 2011Publication date: March 21, 2013Applicant: CHINA SHENHUA ENERGY COMPANY LIMITEDInventors: Wen Ling, Yinshan Jiang, Cundi Wei, Nan Li, Dazhao Gu, Zhaohua Guo, Dianfan Yang, Junzhou Chi, Ping Zou
-
Publication number: 20130043167Abstract: A vertical ring magnetic separator for de-ironing of coal ash comprises a rotating ring (101), an inductive medium (102), an upper iron yoke (103), a lower iron yoke (104), a magnetic exciting coil (105), a feeding opening (106), a tailing bucket (107) and a water washing device (109). The feeding opening (106) is used for feeding the coal ash to be de-ironed, and the tailing bucket (107) is used for discharging the non-magnetic particles after de-ironing. The upper iron yoke (103) and the lower iron yoke (104) are respectively arranged at the inner and outer sides of the lower portion of the rotating ring (101). The water washing device (109) is arranged above the rotating ring (101). The inductive medium (102) is arranged in the rotating ring (101).Type: ApplicationFiled: February 23, 2011Publication date: February 21, 2013Applicant: CHINA SHENHUA ENERGY COMPANY LIMITEDInventors: Jianguo Han, Zhaohua Guo, Wenhui Zhang, Cundi Wei, Yongwang Wang, Shaonan Xu, Sa Lv, Hong Dong, Junzhou Chi, Jianmin Zhang, Qingan Nan