Methods for suppressing fugitive dust emissions
AssigneeBetz Laboratories, Inc.
InventorsDonald C. Roe, David M. Polizzotti
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Abstract
An improved non-viscous aqueous dust control solution which includes a polyvinyl alcohol and boric acid. The improved solution may be spray applied or applied as a foam. The solution may include cross-linking agents, extenders, plasticizers or surfactants.
Claims41
A method of suppressing dust comprising contacting a solid particulate dust producing material with a dust inhibiting amount of a non-viscous, aqueous solution comprising boric acid and up to about 0.25% by weight a polyvinyl alcohol.
A method of suppressing dust comprising contacting a solid particulate dust producing material with a dust suppressing amount of a foam comprising water, boric acid, a foaming agent and up to about 0.25% by weight a polyvinyl alcohol.
A method of suppressing dust comprising contacting a solid particulate dust producing material with a foam developed from a non-viscous, aqueous solution containing a foam generating agent, the improvement comprising including in said aqueous solution boric acid and up to about 0.25% by weight a polyvinyl alcohol.
A method of suppressing dissemination of fugitive dust particles from a solid particulate into the atmosphere wherein a newtonian aqueous solution is applied to said dust particles, the improvement comprising including in said aqueous solution boric acid and from about 0.1% up to about 0.25% by weight a polyvinyl alcohol.
A method of suppressing dissemination of fugitive dust particles from a solid particulate into the atmosphere wherein a non-viscous, aqueous solution is applied to said dust particles, the improvement comprising including in said aqueous solution up to about 0.25% by weight of a polyvinyl alcohol cross-linked with boric acid, in a ratio of polyvinyl alcohol:boric acid of from about 10:1 to about 200:1.
Dependencies are inferred from the claim text.