Isp Investments Inc.

Hercules Corporation

Solenis Technologies, L.p.

Other

Solenis Technologies Cayman, L.p.

Kirill Bakeev

David E Graham

Andrew M DiMaio

Jui-Chang Chuang

Michael A Drzewinski

Tuyen T Nguyen

Thomas Winkler

Jeffrey K Politis

Jenn S Shih

Hong Yang

De-Kai Loo

Randall T Myers

Thomas J Podlas

Teng-Shau Young

John K Bard

Dirk Kruythoff

Carl B Argo

Tuyen Thanh Nguyen

Zoha Al-Badri

Dekai Loo

Willemina Geesien Salomons

Andrew M Dimaio

Angie H Ma

Vu Thieu

Allen J Krauss

Tuyen Nguyen

Wilfried Adolf Hohn

James G Binder

Theo Klootwijk

Betty Maagdenberg-Roels

Willimlen G Salomons

Anthony M Shepherd

Kevin Harris

Michael Dittel

Sung Gun Chu

Brian John Huebner

James B Binder

Jeffery K Politis

Kurt Jonathan Beers

Zoha Moussa Al-Badri

Jeffry K Politis

Sung Chu

Tara Everett

Willimien G Salomons

Willemina Salomons

Tara Lyn Everett

This disclosure provides a method of improving gold recovery in a cyanide leaching circuit comprising a gold ore slurry. The method includes the step of providing a gold recovery additive chosen from polyacrylic acid, copolymers of acrylic acid and a sulfonated co-monomer, and combinations thereof, wherein the additive has a weight average molecular weight of from about 500 to about 10,000 g/mol. The method also includes the step of combining the gold recovery additive with the gold ore slurry in the cyanide leaching circuit, wherein the gold recovery additive is present in an amount of from about 10 to about 1000 g per ton of dry gold ore to improve the recovery of gold from the gold ore slurry.

Method of improving gold recovery in a cyanide leaching circuit

Formation of CaSOand FeOcontaining deposits is reduced in a pressure oxidation autoclave and/or adjacent circuits during pressure oxidation of gold-containing ore. The gold-containing ore is combined with water to create an aqueous slurry that is heated and introduced into the autoclave. The method includes providing a scale inhibitor that is free of an organic polymer and includes an inorganic phosphate according to formula (I), (XPO), wherein X is Na, K, H, or combinations thereof, and m is at least about 6, an inorganic phosphate according to formula (II), YPO, wherein Y is Na, K, H, an organic phosphonate; or combinations thereof, and n is at least about 6. The method includes the step of combining the scale inhibitor and at least one of the gold-containing ore, the water, and the aqueous slurry to reduce scale.

Method for reducing formation of CaSO4 and Fe2O3 containing deposits in a pressure oxidation autoclave and/or adjacent circuits during pressure oxidation of gold-containing ore

Grinding aid compositions comprising hydrolyzed starches, such as dextrin, maltodextrin or corn syrup solids. The grinding aid compositions are typically added to various mineral ore slurries prior to grinding operations to affect the rheology characteristics of the mineral ore slurries.

Hydrolyzed starches as grinding aids for mineral ore processing

A method for reducing formation of scale in phosphoric acid production is provided herein. Phosphate-containing ore is combined with an acid to form an acidic slurry and the acidic slurry is processed to form an acidic stream. The method includes providing a scale inhibitor including an inorganic phosphate. The method further includes combining the scale inhibitor and at least one of the phosphate-containing ore, the acidic slurry, and the acidic stream, to reduce the formation of scale. A system for phosphoric acid production exhibiting a reduced formation of scale is also provided herein. The system includes a substrate having a surface in contact with at least one of the phosphate-containing ore, the acidic slurry formed from the phosphate-containing ore and the acid, and the acidic stream formed from the acidic slurry. The system including the scale inhibitor exhibits a reduced formation of scale on the surface.

Systems and methods for reducing formation of scale in phosphoric acid production

A process for enhancing mining processes and in particular to the combination of anionic grinding aids with cationic flocculating agents, an anionic flocculant containing sulphonated and/or carboxylated groups, a terpolymer and combinations thereof at the flocculating stage in mineral ore processing applications, thereby enhancing the effectiveness of mining processes particularly in the grinding and flocculating of the mineral ore slurry.

Wet mineral ore processing in mining applications

The current technology relates to mining processes and compositions which inhibit the growth of complex scale. More specifically it relates to a process for preventing/inhibiting and/or controlling gypsum scale in aqueous mineral ore slurries, and for inhibiting scale in relatively high solids content environments in industrial mining operations.

Gypsum scale inhibitors for ore slurry systems in hydro-metallurgical applications

A synthetic polymer has a water-soluble or water-swellable polyurethane backbone and terminal groups and/or intermediate groups of blocks of hydrophobes of alkyl- or aryl compounds containing a polymerizable cyclic monomer or a polymerizable double bond (or alkene) group or derivatives thereof. The blocks of hydrophobes are composed of two or more units of the same or different hydrophobes. These synthetic polymers are used as rheology modifiers, especially in latex paints.

Colorant compatible hydrophobically modified polyurethane thickener for paint

A joint compound with improved crack resistance is formed by combining water, a filler such as calcium carbonate, a latex emulsion binder, a thickening system such as methylhydroxyethyl cellulose, and nanocrystalline cellulose. The nanocrystalline cellulose is provided in an amount effective to reduce the crack formation during drying.

Nanocrystallinecellulose (NCC) in tape joint compound (JC)

Hydroxyethylcellulose with a low molar substitution and which is uniformly substituted is useful in cement-based systems, including mortars. The cement-based system exhibits long pot life, as well as very high water retention capability at hot temperature, as well as better paste stability and optimized setting behavior for hot as well as cold temperature compared to typical, cement-based systems with commercial cellulose ether compounds. Less hydrophilic cellulose ethers such as methylhydroxyethylcellulose can be added as a second cellulose ether.

Low molar, homogeneously substituted HEC for use in cement-based systems

A synthetic polymer has a water-soluble or water-swellable polymer backbone and terminal groups and/or intermediate groups of blocks of hydrophobes of alkyl- or aryl compounds containing a polymerizable cyclic monomer or a polymerizable double bond (or alkene) group or derivatives thereof. The blocks of hydrophobes are composed of two or more units of the same or different hydrophobes. These synthetic polymers are used as rheology modifiers, especially in latex paints.

Colorant compatible synthetic thickener for paint

An aqueous dispersion includes an associative thickener based on a hydrophobically modified poly(acetal- or ketal-polyether) (HM-PAPE) and at least one viscosity reducing agent selected from ethoxylated alcohols, ethoxylated acetyleneic diols, phosphate esters, dialkyl sulfosuccinates, and mixtures thereof. This aqueous dispersion improves the incorporation of the HM-PAPEs into aqueous based protective coatings. This dispersion also improves water-borne coating compositions that optionally contain latex.

Aqueous dispersion of poly(acetal-polyether) and its use in protective coatings

A composition is provided herein for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit. The composition is a homopolymer of an N-alkyl(meth)acrylamide, N,N-dialkyl(meth)acrylamide or copolymers thereof with N-vinyl-N-methylacetamide, in a defined solvent, which homopolymers and copolymers are made and applied in the defined solvent, which, most preferably, is a low molecular weight glycol ether such as 2-butoxyethanol.

Method for preventing or retarding the formation of gas hydrates

A composition for preventing or retarding the formation of gas hydrates during the transport of a fluid comprising water and a hydrocarbon through a conduit. The composition is a homopolymer of vinyl caprolactam, or copolymers thereof, having a low molecular weight in the range of 500 to 2500, which is made in a polymerization solvent, preferably a glycol ether, most preferably 2-butoxyethanol and also including a carrier solvent, preferably monoethylene glycol.

Described herein is a process of corrosion inhibition of a steel pipeline during transport of water and gas, or water and an oil, or mixtures thereof, therethrough, including introducing a copolymer of vinyl caprolactam and vinylpyridine into said pipeline.

Corrosion inhibition during transport of water and a hydrocarbon through a pipeline

A gas hydrate inhibitor includes, by weight, a copolymer including about 80 to about 95% of polyvinyl caprolactam (VCL) and about 5 to about 20% of N,N-dialkylaminoethyl(meth)acrylate or N-(3-dimethylaminopropyl) methacrylamide.

Gas hydrate inhibitor

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Newark, DE, United States of America

Kirill Bakeev