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. 26, 2018
Filed:
Dec. 23, 2016
Lakehead University, Thunder Bay, CA;
Inderjit Nirdosh, Thunder Bay, CA;
Natarajan Ramanathan, Trichy, IN;
LAKEHEAD UNIVERSITY, Thunder Bay, ON, CA;
Abstract
The main objective of the invention was to develop a new flotation collector that could eliminate or reduce the amount of copper sulfate used in the flotation of sphalerite. Different series of collectors such as cupferrons, arylhydroxamic acids and amino mercaptans or amino thiols were synthesized and tested. Amino mercaptans/aminothiols were found to be very effective in floating sphalerite from a lead-zinc ore using only 10-15% of copper sulfate used with conventional xanthate collector. The present invention does not require any alteration in the current mill practices. This warrants only changing the flotation collector in zinc flotation stage from, for example, potassium amyl xanthate (PAX) to the new collector.