Claims
- 1. A process for recovering mineral sulfides comprising:
- (a) mixing crushed ore containing said mineral sulfides, water, and a trithiocarbonate having the formula ##STR7## wherein R' is selected from the group consisting of alkyl and alkenyl radicals, and wherein R.sup.2 is selected from the group consisting of alkyl and alkenyl radicals to establish a pulp;
- (b) aerating said thus established pulp to produce a froth containing said mineral sulfides; and
- (c) recovering said mineral sulfides from said thus produced froth.
- 2. A process in accordance with claim 1 wherein said trithiocarbonate is employed in step (a) in an amount in the range from about 0.001 to about 1.0 lb/ton of said ore.
- 3. A process in accordance with claim 1 wherein said trithiocarbonate is employed in step (a) in an amount in the range from about 0.01 to about 0.3 lb/ton of ore.
- 4. A process in accordance with claim 1 wherein R.sup.2 is selected from the group consisting of alkyl and alkenyl radicals having from 1 to 12 carbon atoms.
- 5. A process in accordance with claim 1 wherein R' is selected from the group consisting of alkyl and alkenyl radicals having from 1 to 12 carbon atoms.
- 6. A process in accordance with claim 5 wherein R.sup.2 is selected from the group consisting of alkyl and alkenyl radicals having from 1 to 12 carbon atoms.
- 7. A process for recovering mineral sulfides comprising:
- (a) mixing crushed ore containing said mineral sulfides, water, and a composition having the formula ##STR8## to establish a pulp, wherein said formula (I) is characterized further in that R' is selected from the group consisting of alkyl and alkenyl radicals, and R.sup.2 is selected from the group consisting of alkyl and alkenyl radicals, said composition being produced by the steps of:
- reacting a hydroxide having the formula
- M--OH (II),
- wherein M is selected from the group consisting of Li, Na, K and NH.sub.4.sup.+, with a mercaptan having the formula
- R'--S--H (III),
- wherein R' is selected from the group consisting of alkyl and alkenyl radicals to form
- R'--S--M (IV),
- reacting R'--S--M and CS.sub.2 to form ##STR9## reacting the product of formula (V) with a haloformic ester having the formula ##STR10## wherein X is selected from the group consisting of Cl, Br and I, and R.sup.2 is selected from the group consisting of alkyl and alkenyl radicals, to form a trithiocarbonate having the formula (I); and
- recovering said trithiocarbonate as the product of the process;
- (b) aerating said thus established pulp to produce a froth containing said mineral sulfides; and
- (c) recovering said mineral sulfides from said thus produced froth.
- 8. A process in accordance with claim 7 wherein said composition having the formula (I) is employed in step (a) in an amount in the range from about 0.001 to about 1.0 lb/ton of said ore.
- 9. A process for recovering sulfide comprising:
- (a) mixing crushed ore containing said mineral sulfides, water and S-carbethoxy-S'-ethyl trithiocarbonate to establish a pulp;
- (b) aerating said thus established pulp to produce a froth containing said mineral sulfides; and
- (c) recovering said mineral sulfides from said thus produced froth.
- 10. A process in accordance with claim 9 wherein said S-carbethoxy-S'-ethyl trithiocarbonate is employed in step (a) in an amount in the range from about 0.001 to about 1.0 lb/ton of said ore.
Parent Case Info
This is a division of application Ser. No. 458,505, filed Jan. 17, 1983, now U.S. Pat. No. 4,528,141.
US Referenced Citations (4)
Divisions (1)
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Number |
Date |
Country |
Parent |
458505 |
Jan 1983 |
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