# US 2014/0154418 A1 · Bulk material cover compositions and methods of applying > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154418 A1 - Document ID: US20140154418A1 - Status: Published application - Kind: A1 - Application number: 14/115,169 - Filed: 2012-05-04 - Published: 2014-06-05 - Earliest claimed: 2011-05-04 - Assignees: Lsc Environmental Products, LLC - Applicants: Lsc Environmental Products, LLC - Inventors: David L. Hansen - Web page: https://patentgrep.com/patent/US20140154418A1 ## CPC - B09B 1/004: {Covering of dumping sites} - B05D 7/24: for applying particular liquids or other fluent materials - C04B 16/02: Cellulosic materials (cellulosic waste materials, e.g. sawdust, rice husks, C04B18/24) - C04B 16/0683: {Polyesters, e.g. polylactides} - C04B 28/02: containing hydraulic cements other than calcium sulfates - C04B 28/021: {Ash cements, e.g. fly ash cements (fly ash as filler C04B18/08); Cements based on incineration residues, e.g. alkali-activated slags from waste incineration (alkali-activated combustion residues as such C04B7/243; mixtures of the lime-pozzuolane type C04B28/18); Kiln dust cements} - C04B 28/04: Portland cements - C08L 1/08: Cellulose derivatives - C08L 1/284: {with hydroxylated hydrocarbon radicals} - C08L 1/286: {substituted with acid radicals, e.g. carboxymethyl cellulose [CMC] (C08L1/282 takes precedence)} - C08L 1/32: Cellulose ether-esters - B05D 2401/20: Aqueous dispersion or solution - C04B 2111/00155: {Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite} - C04B 2111/00775: {the composition being used as waste barriers or the like, e.g. compositions used for waste disposal purposes only, but not containing the waste itself} - C08K 7/02: Fibres or whiskers - Y02W 30/30: Landfill technologies aiming to mitigate methane emissions - Y02W 30/91: Use of waste materials as fillers for mortars or concrete - B09B: DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT ## Abstract A cover material for a bulk material pile and method for applying the cover material are disclosed. The cover composition is free of fiber, clay, cement and pozzolanic material and comprises: 95 to 99.75 percent by weight water, 0.25 to 5 percent by weight of a water dispersible cellulosic polymer; and sufficient acid to maintain the pH of the solution between 1.0 and 6.0. ## Claims ### Claim 1 A method of providing a cover to a bulk material pile, the method comprising: a. providing a cover composition free of fiber, clay, cement and pozzolanic material, said composition comprising: 95 to 99.75 percent by weight water 0.25 to 5 percent by weight of a water dispersible cellulosic polymer; and sufficient acid to maintain the pH of the solution between 1.0 and 6.0; b. applying the cover composition onto the bulk material pile; and c. allowing the composition to harden to provide a cover to at least a portion of the bulk material pile. ### Claim 2 (depends on 1) A method according to claim 1 wherein said cover composition consists essentially of: 95 to 99.75 percent by weight water 0.25 to 5 percent by weight of a water dispersible cellulosic polymer; and sufficient acid to maintain the pH of the solution between 1.0 and 6.0. ### Claim 3 (depends on 1) A method according to claim 1 wherein said cover composition consists essentially of: 95 to 99.75 percent by weight water 0.25 to 5 percent by weight of a water dispersible cellulosic polymer; sufficient acid to maintain the pH of the solution between 1.0 and 6.0; and a coloring agent. ### Claim 4 (depends on 1) The method according to claim 1, wherein the acid comprises at least one of citric acid and acetic acid. ### Claim 5 (depends on 1) The method according to claim 1, wherein the acid comprises 0.01 to 0.1 percent by weight of total composition. ### Claim 6 (depends on 5) The method according to claim 5, wherein the acid comprises 0.02 to 0.06 percent by weight of total composition. ### Claim 7 (depends on 1) The method according to claim 1, wherein the cellulosic water dispersible polymer comprises at least one of hydroxypropyl methyl cellulose (HPMC) and hydroxyethylcellulose (HEC). ### Claim 8 (depends on 1) The method according to claim 1, wherein the polymer comprises 1.0 to 2.0 weight percent of the total composition. ### Claim 9 (depends on 1) The method according to claim 1, wherein the acid comprises sufficient acid to maintain the pH at 3.0 to 4.0. ### Claim 10 (depends on 1) The method of claim 1, wherein said composition is applied to a thickness of less than 1 mm. ### Claim 11 A mixture for covering waste piles, said mixture being free of fiber, clay, cement and pozzolanic material, said mixture comprising: 95 to 99.75 percent by weight water 0.25 to 5 percent by weight of a water dispersible cellulosic polymer; and sufficient acid to maintain the pH of the solution between 1.0 and 6.0. ### Claim 12 (depends on 11) A mixture according to claim 11 consisting essentially of: 95 to 99.75 percent by weight water; 0.25 to 5 percent by weight of a water dispersible cellulosic polymer; and sufficient acid to maintain the pH of the solution between 1.0 and 6.0. ### Claim 13 (depends on 11) A mixture according to claim 11 consisting essentially of: 95 to 99.75 percent by weight water; 0.25 to 5 percent by weight of a water dispersible cellulosic polymer; sufficient acid to maintain the pH of the solution between 1.0 and 6.0; and a coloring agent. ### Claim 14 (depends on 11) The mixture according to claim 11, wherein the acid comprises at least one of citric acid and acetic acid. ### Claim 15 (depends on 11) The mixture according to claim 11, wherein the acid comprises 0.02 to 0.06 percent by weight of total composition. ### Claim 16 (depends on 11) The mixture according to claim 11, wherein the cellulosic water dispersible polymer comprises at least one of hydroxypropyl methyl cellulose (HPMC) and hydroxyethylcellulose (HEC). ### Claim 17 (depends on 16) The mixture according to claim 16, wherein the polymer comprises 1.0 to 2.0 weight percent of the total composition. ### Claim 18 (depends on 11) The mixture according to claim 11, wherein the acid comprises sufficient acid to maintain the pH at 3.0 to 4.0. ### Claim 19 A bulk material cover composition consisting essentially of: 95 to 99.75 percent by weight water that does not meet US EPA standards for potable water; 0.25 to 5 percent by weight of a water dispersible cellulosic polymer; and sufficient acid to maintain the pH of the solution between 1.0 and 6.0. ### Claim 20 A bulk material cover composition consisting essentially of: 95 to 99.75 percent by weight water that does not meet US EPA standards for potable water; 0.25 to 5 percent by weight of a water dispersible cellulosic polymer; sufficient acid to maintain the pH of the solution between 1.0 and 6.0; and a coloring agent.