Method for preferentially recovering manganese from waste lithium-rich manganese-based cathode material

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12119464
APP PUB NO 20240170751A1
SERIAL NO

18507242

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The present invention provides a method for preferentially recovering manganese from waste lithium-rich manganese-based cathode material, the method comprising: step 1) calcination and leaching: mixing the waste lithium-rich manganese-based cathode material with ammonium sulfate and then performing low-temperature calcination, leaching the calcination product with water, and then performing solid-solution separation to obtain a leaching solution; step 2) complexing and manganese separating: adding ammonium sulfite to the leaching solution obtained in step 1) for a complex reaction to obtain manganese-rich residue; step 3) oxidation leaching: adding an oxidant to the manganese-rich residue obtained in step 2) to perform oxidation leaching, and adjusting the pH of the solution to obtain a manganese-rich solution; and step 4) extracting and stripping. The method realizes the preferential and productive recovering of manganese from waste lithium-rich manganese-based cathode materials, avoids the negative impact of polymetals in the conventional recovery process, and has economic and environmental benefits.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
BEIJING UNIVERSITY OF TECHNOLOGY100124 NO 100 CHAOYANG DISTRICT PING TIAN PARK BEIJING BEIJING CITY BEIJING CITY 100124

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pan, Dean Beijing, CN 15 1
Wang, Wei Beijing, CN 2815 17926
Wang, Yifan Beijing, CN 146 572
Zhang, Qijun Beijing, CN 19 3
Zhang, Xiaoguang Beijing, CN 28 170

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Apr 15, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 Apr 15, 2032
11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 15, 2036
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00