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:
Mar. 22, 1988
Filed:
May. 06, 1986
Richard R Klimpel, Midland, MI (US);
Robert D Hansen, Midland, MI (US);
Edwin J Strojny, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
This invention relates to a froth flotation process for selectively recovering nonferrous metal-containing sulfide minerals or sulfidized metal-containing oxide minerals from ores using froth flotation. The collector employed in the process is an epithio compound of the formula: ##STR1## wherein m=1, 2 or 3; each R is independently hydrogen, a hydrocarbyl group or substituted hydrocarbyl group; each R.sup.1 is independently hydrogen, a hydrocarbyl group or substituted hydrocarbyl group, provided one R or R.sup.1 is not hydrogen; and each R.sup.2 is independently hydrogen, hydrocarbyl, hydrocarbyloxy or hydrocarbyl thioether.