Collector composition and methods of using thereof
AssigneeKraton Corporation
InventorsGerald Heebner, Lloyd Nelson
Life of this patent
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Abstract
The disclosure relates to a method for the beneficiation of an ore in a froth flotation process. The method comprises contacting an ore in a liquid medium to a collector composition comprising a plant-derived liquid decarboxylated rosin acid (DCR) collector. The DCR comprises 40 to 100 wt. % of tricyclic compounds having 18-20 carbon atoms, one or more C═C groups, and m/z (mass/charge) value of 220-280. The DCR has an oxygen content of <5%, a density of 0.9 to 1.0 g/cm3 at 20° C., and an acid value of <50 mg KOH/g.
Claims20
A method for the beneficiation of an ore in a froth flotation process, the method comprising:
- providing a slurry comprising the ore dispersed in a liquid medium;
- contacting the slurry with a collector composition comprising a decarboxylated rosin acid (“DCR”),
- wherein the DCR comprises 40 to 100 wt. % of tricyclic compounds having 18-20 carbon atoms, one or more C═C groups, and m/z (mass/charge) value of 220-280, as measured by GC-FID-MS, wherein sum of tricyclic compounds as aromatic DCR species having a MW of 252 or 256 and cycloaliphatic DCR species having a MW of 260 or 262 in the DCR is >50 wt. %;
- and
- wherein the DCR has:
- an oxygen content of <3%;
- a density of 0.9 to 1.0 g/cm3 at 20° C.;
- and
- an acid value of <30 mg KOH/g;
- sparging the slurry to form a froth layer containing a concentrate and a bottom layer containing tailings;
- and
- recovering the concentrate from the froth layer as the beneficiated ore.
A method for the beneficiation of an ore in a froth flotation process, the method comprising:
- providing a slurry comprising:
- an ore comprising a mineral of interest;
- a liquid medium;
- a collector composition comprising a decarboxylated rosin acid (“DCR”),
- wherein the DCR comprises 40 to 100 wt. % of tricyclic compounds having 18-20 carbon atoms, one or more C—C groups, and m/z (mass/charge) value of 220-280, as measured by GC-FID-MS, wherein sum of tricyclic compounds as aromatic DCR species having a MW of 252 or 256 and cycloaliphatic DCR species having a MW of 260 or 262 in the DCR is >50 wt. %;
- and
- wherein the DCR has:
- an oxygen content of <3%;
- a density of 0.9 to 1.0 g/cm3 at 20° C.;
- and
- an acid value of <30 mg KOH/g;
- sparging the slurry to form a froth layer containing a concentrate and a bottom layer containing tailings;
- and
- recovering the concentrate from the froth layer as the beneficiated ore.
A slurry composition for the beneficiation of an ore in a flotation process, the composition comprising:
- an ore comprising a mineral of interest;
- a liquid medium;
- and
- a collector composition in an amount of 0.02-20 lb. per ton of ore, comprising:
- >0.5 wt. % of a decarboxylated rosin acid (“DCR”),
- wherein the DCR comprises 40 to 100 wt. % of tricyclic compounds having 18-20 carbon atoms, one or more C═C groups, and m/z (mass/charge) value of 220-280, as measured by GC-FID-MS, wherein sum of tricyclic compounds as aromatic DCR species having a MW of 252 or 256 and cycloaliphatic DCR species having a MW of 260 or 262 in the DCR is >50 wt. %;
- and
- wherein the DCR has:
- an oxygen content of <3%;
- a density of 0.9 to 1.0 g/cm3 at 20° C.;
- and
- an acid value of <30 mg KOH/g;
- <99.5 wt. % of an additional collector;
- and
- optional components, in an amount of <20 wt. %, selected from a frothing agent, a depressant, an activator, a modifier, and combinations thereof, based on the total weight of the slurry.
Dependencies are inferred from the claim text.