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US 9,458,718 B2Granted
Aerated rock dust
AssigneeWright-Mix Material Solutions, LLC
InventorShannon N. Wright
Life of this patent
Estimating the term…
Abstract
This technology relates to a method of forming an aerated material for application to the surfaces of mines to minimize dust formation. The aerated material is comprised of rock dust and a foaming agent which is mixed with water, and when properly mixed and applied to a mine surface, creates a dry cellular structure with little caking.
Claims11
A method of a dry dusting a coal mine surface utilizing an aerated, oxygenated foam to provide a dispersible coating having a cellular structure, the method comprising:
- a. providing an aerated foam comprising a dry powder mixture and a water catalyst, wherein the dry powder mixture comprises at least 94% rock dust and a dry foaming agent;
- b. applying the aerated foam to a coal mine surface.
A method of dry dusting coal mine surfaces comprising:
- a. adding water to a dry powder mixture comprising rock dust, an anionic surfactant and sodium percarbonate;
- b. mixing the water and dry powder mixture for about 30 seconds to about 60 seconds to from an oxygenated aerated foam;
- c. applying the aerated foam to a mine surface to form a cellular coating onto said surface.
A method of dry dusting coal mine surfaces comprising:
- a. adding a 1.5% concentration of liquid H2O2 to a dry powder mixture comprising rock dust, an anionic surfactant used at a dosage rate of 0.1% and yeast;
- b. mixing the 1.5% concentration of liquid H2O2 and dry powder mixture for about 30 seconds to about 60 seconds to from an oxygenated aerated foam;
- c. spraying the aerated foam to a mine surface to form a cellular coating onto said surface.
Dependencies are inferred from the claim text.