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. 19, 2026
Filed:
Oct. 16, 2025
Tongji University, Shanghai, CN;
Linhua Jiang, Shanghai, CN;
Ning Duan, Shanghai, CN;
TONGJI UNIVERSITY, Shanghai, CN;
Abstract
A method for monitoring copper-arsenic sulfidation separation in copper electrolyte purification process includes by PLC, timely acquiring changes in copper and arsenic concentrations in first-stage sulfidation monitoring module, determining a critical point where arsenic concentration slightly decreases, and interlocking gas inlet valve to close and liquid outlet valve to open, achieving high-copper precipitation with minor-arsenic precipitation; timely acquiring changes in copper and arsenic concentrations in second-stage sulfidation monitoring module, determining a critical point where copper concentration decreases to near zero, and interlocking gas inlet valve to close and liquid outlet valve to open, achieving complete-copper precipitation with minimal-arsenic precipitation; and timely acquiring changes in copper and arsenic concentrations in third-stage sulfidation monitoring module, determining a critical point where arsenic concentration decreases to a limit value, and interlocking gas inlet valve to close and liquid outlet valve to open, achieving stable arsenic concentration.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile