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US 2017/0159153 A1Published application
Leaching aids and methods of using leaching aids
AssigneeBASF SE
InventorsJack Thomas Bender, Nathan Clark Emmerich, Russell Vincent Brewer, Lauren Michele Hight
Life of this patent
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Abstract
Leaching aids, for example, when present in a leaching solution, and methods of using the leaching aids. The leaching aids can include one or a combination of compounds. The method of using the leaching aids can include a process of recovering metal from ore, for example, a process involving heap leaching, solvent extraction and electrowinning.
Claims65
A solution comprising:
- a lixiviant;
- and
- one or more compound comprising formula (I):
- R((AO)nB)m((AO)nH)p (I)
- wherein each AO group is, independently, an alkyleneoxy group selected from ethyleneoxy (“EO”), 1,2-propyleneoxy (“PO”), 1,2-butyleneoxy, and styryleneoxy;
- each n is independently an integer from 0 to 40;
- m is an integer from 1 to the total number of OH hydrogens in the R group prior to alkoxylation;
- p is an integer such that the sum of m plus p equals the number of OH hydrogens in the R group prior to alkoxylation;
- B is H;
- R is a group selected from formula (II) to (VIII):
- R1C(CH2O)3 (II) wherein R1 is H, methyl, ethyl, or propyl;
- C(CH2O)4 (III);
- OC(CH2O)2 (IV);
- N(CH2 CH2O) (V)
- (R2)xN(CH2 CH2O) (VI) wherein R2 is a C1-C4 alkyl, y is 1-3 and x+y=3;
- O(CH2)rO (VII), wherein r is 2 to 6;
- and
- O(CH(CH3)CH2)O (VIII);
- wherein the one or more compound is at a concentration of about 1 ppm to about 2000 ppm of the solution.
16 more elements
A solution, comprising:
- a lixiviant;
- and
- one or more compound having formula (IX):
- wherein R3 is a C1 to C20 linear or branched alkyl group comprising zero or more substitutions with any of O, N, OH or
- R4 and R6 are each, independently, H, a C1 to C10 linear or branched alkyl group or an alcohol group,
- R5 is a C1 to C10 linear or branched alkyl group;
- and
- wherein the one or more compound is at a concentration of about 1 ppm to about 2000.
5 more elements
A solution comprising:
- a lixiviant;
- and
- a mixture of compounds formed by alkoxylation of trimethylolpropane (“TMP”), wherein each of the compounds comprise ethylene oxide (“EO”) units, the compounds having the general structure:
- TMP-EOx,y,z, where x, y and z are independently an integer from 0 to 7, with the proviso that x+y+z=7,
- wherein the mixture is at a total concentration of about 1 ppm to about 50 ppm.
2 more elements
Dependencies are inferred from the claim text.