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. 14, 2013
Filed:
Jan. 25, 2010
Shun Myung Shin, Daejeon, KR;
Jin Gu Kang, Daejeon, KR;
Jeong Soo Sohn, Daejeon, KR;
Hyun Gun Kim, Gwangju, KR;
Moon Ho Kim, Gwangju, KR;
Shun Myung Shin, Daejeon, KR;
Jin Gu Kang, Daejeon, KR;
Jeong Soo Sohn, Daejeon, KR;
Hyun Gun Kim, Gwangju, KR;
Moon Ho Kim, Gwangju, KR;
Korea Institute of Geoscience and Mineral, Daejeon, KR;
Econics Corporation, Jeollabuk-Dö, KR;
Abstract
A method for preparing manganese sulfate and zinc sulfate from waste batteries containing manganese and zinc, and more particularly to a method for preparing manganese sulfate and zinc sulfate from waste batteries containing manganese and zinc. Zinc powder and activated carbon are added to a leached solution obtained from a continuous leaching process so as to remove heavy metals and organic materials from the leached solution, and then the leached solution is spray-dried to simultaneously obtain manganese sulfate and zinc sulfate at high-purity by a simple process without generating wastewater. An environmentally friendly waste battery recycling process is thereby provided, because it is not required to use additional chemical substances for neutralization titration or impurity removal in recovering manganese sulfate and zinc sulfate by leaching a waste battery powder.