Method for preventing the agglomeration or generation of dust from a particulate material comprising coal

DETAILED DESCRIPTION The invention claimed is: 1.
A method of preventing the agglomeration of a particulate material comprising coal and the adhesion thereof to surfaces in subfreezing temperatures comprising a) providing a particulate material comprising coal; b) providing a concentrated product which comprises a mixture of from about 45 to about 90 weight percent of glycerin, from about 5 to about 50 weight percent of water, about 0.
5 to about 3 weight percent of fatty acids and esters thereof and from about 2 to about 15 weight percent of water soluble salts wherein the freezing point of said concentrated product is at least about -35.
degree.
C.
; c) diluting the concentrated product with about 10 400 weight percent of water, based on the amount of said concentrated product to form a diluted product; d) applying to the particulate material an amount of the dilute product effective to suppress agglomeration of the particulate material and its adhesion to surfaces.
2.
The method of claim 1 wherein wherein said concentrated product comprises a crude glycerin solution derived from vegetable oils or is formed as a byproduct from a biodiesel manufacturing process of forming fatty acid esters from vegetable oils.
3.
The method of claim 2 wherein said salt comprises sodium chloride.
4.
The method of claim 2 wherein said salt comprises calcium chloride.
5.
The method of claim 2 wherein said concentrated product is formed from a manufacturing process for making fatty acid esters from at least one oil selected from the group consisting of soybean oil and canola oil and wherein said concentrated product comprises from about 78 to 84 weight percent glycerin, from about 7 to about 16 weight percent water and from about 6 to about 9 weight percent inorganic salts.
6.
A method of preventing the generation of dust from particulate materials comprising coal comprising a) providing a particulate material comprising coal; b)providing a concentrated product which comprises a mixture of from about 45 to about 90 weight percent of glycerin, from about 5 to about 50 weight percent of water, about 0