US 11,767,247 B1 · Waste solidification compositions, in-situ use of the same and methods of repurposing calcium-containing industrial by-products

Abstract

Waste solidification compositions and methods of using them repurpose calcium-containing industrial by-products. The compositions comprise either 1) a) auto shred residue; and b) a particulate wood-based product, or 2) a) a solid, particulate calcium-containing compound; and b) a superabsorbent material. The method of repurposing a solid, particulate calcium-containing industrial by-product comprises a) blending the by-product with a superabsorbent material to form a waste solidification composition; b) adding the waste solidification composition to a liquid industrial waste stream; and c) allowing the waste solidification composition to absorb at least 1 times its weight of the liquid industrial waste stream to form a solid waste product. The solid waste product passes Paint Filter Liquids Test Method 9095B.

Claims18

Dependent claims

A waste solidification composition comprising:

a) auto shred residue comprising a mixture of non-ferrous materials, which mixture is screened whereby the auto shred residue has an average particle size of less than 4 inches;
and
b) a particulate wood-based product, wherein the volume ratio of the auto shred residue a) to particulate wood-based product b) is 60 to 85:15 to 40.

Dependencies are inferred from the claim text.

Facts

Application

17/032,570Filed 25 Sep 2020 · us provisional application

Priority

25 Sep 2019

Granted

26 Sep 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C02F 11/008
Treatment of sludge; Devices therefor: sludge treatment by fixation or solidification
C02F 11/148
With addition of chemical agents: combined use of inorganic and organic substances, being added in the same treatment step
C09K 3/32
Materials not provided for elsewhere: for absorbing liquids to remove pollution, e.g. oil, gasoline, fat
E21B 21/06
Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor: arrangements for treating drilling fluids outside the borehole

Waste solidification compositions, in-situ use of the same and methods of repurposing calcium-containing industrial by-products

Life of this patent

Waste solidification compositions, in-situ use of the same and methods of repurposing calcium-containing industrial by-products

Life of this patent

Abstract

Claims18