Asphalt-based dust control formulations
AssigneeHenry Company, LLC
InventorsAmba Ayambem, Daniel B. Kent, John C. Dobson
Life of this patent
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Abstract
This disclosure describes formulations and methods for dust control, for example, coal topping, a term which refers to the application of liquid products to the top of coal loads, such as those in open topped coal hopper railcars as commonly used today to transport coal. Disclosed herein are asphalt-based emulsion formulations that accomplish dust control during industrial operations in which dust handling is required.
Claims22
A dust control formulation (DCF) comprising a dust reduction additive (DRA) emulsion, said DRA emulsion comprising:
- (i) asphalt,
- (ii) at least one first defoamer, and
- (iii) at least one emulsifier,
- wherein said at least one emulsifier is a low-fatty acid emulsifier, comprising:
- (a) a first water,
- (b) a fatty acid solution,
- (c) a first base, and
- (d) a stabilizer.
A bulk material selected from coal, limestone, fly ash, cement, carbon black, coke, or mineral material, wherein said bulk material is covered with a dust control formulation comprising a dust reduction additive (DRA) emulsion, said DRA emulsion comprising:
- (i) asphalt,
- (ii) at least one first defoamer, and
- (iii) at least one emulsifier,
- wherein said at least one emulsifier is a low-fatty acid emulsifier, comprising:
- (a) a first water,
- (b) a fatty acid solution,
- (c) a base, and
- (d) a stabilizer.
Dependencies are inferred from the claim text.