Back to results
US 10,307,770 B2Granted
Method for the benificiation of coal
AssigneeIngevity South Carolina, LLC
InventorsJohn B. Hines, Dennis L. Kennedy, Phillip W. Hurd
Life of this patent
Estimating the term…
Abstract
The present invention relates to the beneficiation of coal by the process of froth flotation and specifically relates to a process for the froth flotation of coal using a mixture of fatty acids and rosin acids (and/or certain derivatives of fatty acids and rosin acids) as a collector.
Claims20
A froth flotation process, comprising:
- combining a collector and an aqueous slurry to produce a treated mixture, wherein the aqueous slurry comprises particles, and wherein the collector comprises:
- a fatty acid component comprising fatty acids, fatty acid derivatives, or a mixture thereof,
- a rosin acid component comprising rosin acids, rosin acid derivatives, or a mixture thereof, and
- at least 5 wt % of a non-saponifiable component, based on the combined weight of the fatty acid component, the rosin acid component, and the non-saponifiable component;
- aerating the treated mixture to produce an aerated mixture, wherein the treated mixture is substantially free of fuel oil when the treated mixture is aerated;
- and
- recovering a beneficiated product from the aerated mixture,
- wherein the particles comprise coal particles.
5 more elements
A froth flotation process, comprising:
- combining a collector and an aqueous slurry to produce a treated mixture, wherein the aqueous slurry comprises particles, and wherein the collector comprises fatty acids, rosin acids, and at least 5 wt % of a non-saponifiable component, based on the combined weight of the fatty acids, the rosin acids, and the non-saponifiable component;
- and
- subjecting the treated mixture to froth flotation to produce a beneficiated product, wherein the treated mixture is substantially free of fuel oil when the treated mixture is subjected to froth flotation,
- wherein the particles comprise coal particles.
1 more element
A froth flotation process, comprising:
- combining a collector and an aqueous slurry to produce a treated mixture, wherein the aqueous slurry comprises coal particles and ash particles, and wherein the collector comprises a fatty acid component, a rosin acid component, and at least 5 wt % of a non-saponifiable component, based on the combined weight of the fatty acid component, the rosin acid component, and the non-saponifiable component;
- aerating the treated mixture comprising the collector and the aqueous slurry to produce an aerated mixture, wherein the treated mixture is substantially free of fuel oil when the treated mixture is aerated;
- and
- recovering a beneficiated product comprising at least a portion of the coal particles from the aerated mixture, wherein the beneficiated product has a reduced concentration of the ash particles relative to the coal particles as compared to the coal particles and the ash particles in the aqueous slurry.
1 more element
Dependencies are inferred from the claim text.