Claims
- 1. In a process for the recovery of the values of lead, iron and copper from the froth in an ore flotation process, the improvement which comprises employing as a collection agent for said values in said process an effective amount of a preblended aqueous composition consisting essentially of (a) a dispersant of the formula: ##STR6## wherein R' is either hydrogen, methyl or ethyl and y is an integer from 6 to 17, said dispersant having a molecular weight from about 300 to about 1000, and (b) the total reaction product resulting from the process which comprises:
- (1) reacting sodium hydroxide with n-butyl mercaptan; and thereafter adding to the resulting reaction product carbon disulfide in an amount sufficient to effect formation of an aqueous composition of sodium n-butyl trithiocarbonate,
- (2) thereafter adding to the resulting reaction product carbon disulfide in an amount sufficient to effect formation of the desired aqueous composition,
- the ratio of (b) and (a) being from about 80:20 to about 99:1 parts by weight.
- 2. A process according to claim 1 wherein the dispersant in said preblended aqueous composition is poly(propylene glycol) monomethyl ether.
- 3. A process according to claim 1 wherein said preblended aqueous composition is employed before each flotation step in the ore recovery process.
- 4. A process according to claim 1 wherein said collection agent is used in an amount from about 0.005 lb/ton or ore to 0.5 lb/ton of ore.
- 5. A process according to claim 4 wherein said collection agent is used in an amount from about 0.01 lb/ton of ore to 0.1 lb/ton of ore.
Parent Case Info
This application is a divisional of our copending application Ser. No. 489,846, filed May 6, 1983 now U.S. Pat. No. 4,556,500, which was a continuation-in-part of our application Ser. No. 387,393, filed June 11, 1982, now abandoned.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
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Parent |
489846 |
May 1983 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
387393 |
Jun 1982 |
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