A cementitious composition is provided that includes: (a) pumice; (b) cement; and (c) substantially spherical silica particles.

Disclosed herein are mineral-based composites that comprise gypsum, syngenite, brucite and a hydrated magnesium sulphate mineral, and which are adapted to degrade when buried. Also disclosed herein are mineral mixtures which can be used to produce the mineral-based composites, as well as products, such as plantable containers, formed from the mineral-based composites and which degrade when buried.

A mixture along with methods of preparing, uses and/or products made from the mixture and methods of preparing products made from the same. Where the mixture contains 0.5% to 10% by weight of one or more superabsorbent polymers and 90% to 99.5% by weight of one or more protective-colloid-stabilized polymers based on one or more ethylenically unsaturated monomers and optionally one or more additives. Where the percentages by weight are based on the dry weight of the mixture and wherein no mineral binder is present within the mixture.

A mixture along with methods of preparing, uses and/or products made from the mixture and methods of preparing products made from the same. Where the mixture contains 0.5% to 10% by weight of one or more superabsorbent polymers and 90% to 99.5% by weight of one or more protective-colloid-stabilized polymers based on one or more ethylenically unsaturated monomers and optionally one or more additives. Where the percentages by weight are based on the dry weight of the mixture and wherein no mineral binder is present within the mixture.

The present invention relates to a method for manufacturing a cable comprising at least one elongate electrically conductive element, at least one composite layer surrounding the elongate electrically conductive element, the composite layer comprising a non-woven fibrous material impregnated by a geopolymer material, and at least one polymer sleeve surrounding the composite layer, the method using a tube of plastic material to facilitate the extrusion of the polymer sleeve around the composite layer.

The present invention relates to a method for manufacturing a cable comprising at least one elongate electrically conductive element, at least one composite layer surrounding the elongate electrically conductive element, the composite layer comprising a non-woven fibrous material impregnated by a geopolymer material, and at least one polymer sleeve surrounding the composite layer, the method using a tube of plastic material to facilitate the extrusion of the polymer sleeve around the composite layer.

A method for precious metal extraction comprises contacting a precious metal-containing ore with an improved cyanide extraction agent under conditions suitable for the formation of a coated precious metal-containing ore where the extraction agent comprises (i) a cement and (ii) a cement retarder; and contacting the coated precious metal-containing ore with a cyanide solution to form soluble precious metal complexes. A composition for gold extraction comprising: (i) a cement (ii) a cement retarder and (iii) an inorganic cyanide salt.

This disclosure provides gypsum cement compositions which comprise an aggregate stabilizing mixture containing a combination of a polysaccharide gum and a polyacrylamide-gelatin blend, and methods for making and using these compositions, including pourable/pumpable floor underlayment slurries and methods for forming high strength underlayment on different substrates.

A retarder mixture for oil and gas well cementing includes a lignosulfonate compound and at least one hydrolyzed carbohydrate. A method includes blending the retarder mixture and a cement precursor to form a cement precursor mixture and introducing water into the cement precursor mixture to form a cement mixture. The cement mixture is pumped down a well and cures to form a cement sheath containing the cement precursor and the retarder mixture.

A retarder mixture for oil and gas well cementing includes a lignosulfonate compound and at least one hydrolyzed carbohydrate. A method includes blending the retarder mixture and a cement precursor to form a cement precursor mixture and introducing water into the cement precursor mixture to form a cement mixture. The cement mixture is pumped down a well and cures to form a cement sheath containing the cement precursor and the retarder mixture.