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:
Jun. 25, 2024
Filed:
May. 27, 2022
Guangdong Brunp Recycling Technology Co., Ltd., Guangdong, CN;
Hunan Brunp Recycling Technology Co., Ltd., Hunan, CN;
Hunan Brunp Ev Recycling Co., Ltd., Hunan, CN;
Haijun Yu, Guangdong, CN;
Yingsheng Zhong, Guangdong, CN;
Yinghao Xie, Guangdong, CN;
Aixia Li, Guangdong, CN;
Xuemei Zhang, Guangdong, CN;
Changdong Li, Guangdong, CN;
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD., Guangdong, CN;
HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD., Hunan, CN;
HUNAN BRUNP EV RECYCLING CO., LTD., Hunan, CN;
Abstract
The present invention relates to a method for preparing nickel sulfate using low-nickel ferronickel is disclosed. The method comprises the following steps: (1) grinding ferronickel to obtain ferronickel powder, and then sintering the ferronickel powder with an oxidant to prepare ferronickel oxide powder; (2) adding sulfuric acid to the ferronickel oxide powder prepared in step (1), mixing, heating, and washing with water to prepare a sulfate salt water washing solution; (3) adding a base to the sulfate salt water washing solution prepared in step (2) to adjust the pH value, then adding a fluoride salt to form a precipitate, filtering to remove the precipitate, and drying the filtrate to obtain nickel sulfate. The method provided in the present invention can improve the efficiency of preparing nickel sulfate, reduce the loss of nickel, and prepare nickel sulfate with high purity, the content of Ni potentially reaching 19.73%-21.34%.