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:
Aug. 20, 2024
Filed:
Dec. 13, 2023
Chongqing Shangjia Electronic Co., Ltd., Chongqing, CN;
Shuchun Li, Chongqing, CN;
Liang Fu, Chongqing, CN;
Xinren Liao, Chongqing, CN;
Juncai Ma, Chongqing, CN;
Ping Li, Chongqing, CN;
Zhan Xu, Chongqing, CN;
Weipeng Zhang, Chongqing, CN;
CHONGQING SHANGJIA ELECTRONIC CO., LTD., Chongqing, CN;
Abstract
Provided is a method for preparing a soft magnetic manganese-zinc ferrite composite by removing impurities from industrial waste step by step. Manganese-containing waste residue is crushed and dried, and then mixed with a flux in a muffle furnace and roasted at a temperature below 1000° C. till solid-liquid stratification; then, multi-step impurity removal is performed to obtain a high-purity quaternary purification solution of manganese sulfate. Similarly, zinc residue is melted to remove impurities, and then multi-step impurity removal is performed to obtain a high-purity quaternary purification solution of zinc sulfate. According to a manganese-zinc-iron ratio required for the manganese-zinc ferrite, the two purification solutions are mixed, and ferrous sulfate is added. The mixed purification solution is coprecipitated with ammonium bicarbonate, washing is performed, and co-precipitated powder is decomposed into ferric oxide, manganese tetroxide and zinc oxide which are then roasted to obtain the manganese-zinc ferrite composite.