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US 9,539,587 B1Granted
Mercaptanized dicyclopentadiene compositions and use thereof as a mining chemical collector
AssigneeChevron Phillips Chemical Company LP
InventorsJim D. Byers, Michael S. Matson, Jason L. Kreider, Kenneth M. Lassen
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Abstract
The present invention discloses polythiol compositions containing monothiotricyclodecenes, dithiotricyclodecanes, and intermolecular sulfide compounds, as well as mining chemical collector compositions containing such polythiol compositions. Flotation processes for recovering metals, such as copper and molybdenum, from ores using the mining chemical collector compositions also are disclosed.
Claims13
A flotation process for the recovery of a metal from an ore, the process comprising:
- contacting the ore with a collector composition, wherein the collector composition comprises a polythiol composition comprising sulfur-containing compounds, the sulfur-containing compounds comprising:
- (i) less than 10 wt. % monothiotricyclodecene compounds;
- (ii) at least 40 wt. % dithiotricyclodecane compounds;
- and
- (iii) from 5 wt. % to 40 wt. % of a heavy fraction comprising intermolecular sulfide compounds having at least one intermolecular sulfide group (—S—), at least two groups independently selected from a tricyclodecenyl group and a tricyclodecanyl group, and optionally at least one thiol sulfur group (—SH).
2 more elements
Dependencies are inferred from the claim text.