The present invention relates to a dry refractory particulate composition comprising a zeolithic microstructure, to a green body and to a refractory lining formed therefrom, and to uses thereof.

The invention relates to methods for manufacturing an inorganic polymer object from a precursor wherein the precursor consists of one or more or comprises one or more selected from the group consisting of gibbsite-containing bauxite, gibbsite containing residue of the Bayer process, thermally processed gibbsite-containing bauxite, and thermally processed gibbsite-containing residue of the Bayer process, the method comprising the steps of alkaline-activating said precursor, mixing the precursor, shaping the mixed precursor and hydrothermally curing the shaped precursor at a temperature between 70° C. and 350° C.

The invention relates to methods for manufacturing an inorganic polymer object from a precursor wherein the precursor consists of one or more or comprises one or more selected from the group consisting of gibbsite-containing bauxite, gibbsite containing residue of the Bayer process, thermally processed gibbsite-containing bauxite, and thermally processed gibbsite-containing residue of the Bayer process, the method comprising the steps of alkaline-activating said precursor, mixing the precursor, shaping the mixed precursor and hydrothermally curing the shaped precursor at a temperature between 70° C. and 350° C.

The invention relates to methods for manufacturing an inorganic polymer object from a precursor wherein the precursor consists of one or more or comprises one or more selected from the group consisting of gibbsite-containing bauxite, gibbsite containing residue of the Bayer process, thermally processed gibbsite-containing bauxite, and thermally processed gibbsite-containing residue of the Bayer process, the method comprising the steps of alkaline-activating said precursor, mixing the precursor, shaping the mixed precursor and hydrothermally curing the shaped precursor at a temperature between 70° C. and 350° C.

The invention relates to methods for manufacturing an inorganic polymer object from a precursor wherein the precursor consists of one or more or comprises one or more selected from the group consisting of gibbsite-containing bauxite, gibbsite containing residue of the Bayer process, thermally processed gibbsite-containing bauxite, and thermally processed gibbsite-containing residue of the Bayer process, the method comprising the steps of alkaline-activating said precursor, mixing the precursor, shaping the mixed precursor and hydrothermally curing the shaped precursor at a temperature between 70° C. and 350° C.

One variation of a method for fabricating a dermal heatsink includes: fabricating a substrate defining an interior surface, an exterior surface opposite the interior surface, and an open network of pores extending between the interior surface and the exterior surface; activating surfaces of the substrate and walls of the open network of pores; applying a coating over the substrate to form a heatsink, the coating comprising a porous, hydrophilic material and defining a void network; removing an excess of the coating from the substrate to clear blockages within the open network of pores by the coating; hydrating the heatsink during a curing period; heating the heatsink during the curing period to increase porosity of the coating applied over surfaces of the substrate; and rinsing the heatsink with an acid to decarbonate the coating along walls of the open network of pores in the substrate.

Moulded insulation bodies, processes for the production thereof and use thereof consisting essentially of ceramic material comprising SiO.sub.2 fibers and Al.sub.2O.sub.3 fibers which has been produced using Al.sub.2O.sub.3 sol as a binder and kilned at a temperature of above 800° C. for insulation of the ends of cracking tubes of a tubular reactor for performing a steam reforming process for generating synthesis gas which project out of the reactor heating space.

Moulded insulation bodies, processes for the production thereof and use thereof consisting essentially of ceramic material comprising SiO.sub.2 fibers and Al.sub.2O.sub.3 fibers which has been produced using Al.sub.2O.sub.3 sol as a binder and kilned at a temperature of above 800° C. for insulation of the ends of cracking tubes of a tubular reactor for performing a steam reforming process for generating synthesis gas which project out of the reactor heating space.

The invention relates to a method for producing a multi-purpose isotropic hydroxylapatite/gelatine composite material, involving at least the following steps: a) providing a suspension of powdered hydroxylapatite in a liquid medium selected from the group comprising a C1-C10 alcohol, particularly ethanol, another dispersing agent that can be mixed with water, water, and mixtures thereof; b) adding an aqueous solution of gelatine, preferably at a concentration of 5 to 25 wt. % gelatine, to the suspension; c) agitating the mixture at a predefined temperature for a predefined period of time, preferably in the region of 1 to 10 hours, until the liquid medium has been fully or partially evaporated; and d) optionally drying the product obtained in step c). In a specific embodiment, the method is characterised in that the product obtained in step c) or d) is additionally infiltrated with at least one aliphatic polyether in an additional step e1). In another specific embodiment, the method is characterised in that the product obtained in step c), d) or e1) is additionally brought into contact with at least one agent for crosslinking the gelatine chains, in step e2). A further aspect of the invention relates to the composite material produced using the method described above, and the use of same, particularly as artificial ivory.

The invention relates to a method for producing a multi-purpose isotropic hydroxylapatite/gelatine composite material, involving at least the following steps: a) providing a suspension of powdered hydroxylapatite in a liquid medium selected from the group comprising a C1-C10 alcohol, particularly ethanol, another dispersing agent that can be mixed with water, water, and mixtures thereof; b) adding an aqueous solution of gelatine, preferably at a concentration of 5 to 25 wt. % gelatine, to the suspension; c) agitating the mixture at a predefined temperature for a predefined period of time, preferably in the region of 1 to 10 hours, until the liquid medium has been fully or partially evaporated; and d) optionally drying the product obtained in step c). In a specific embodiment, the method is characterised in that the product obtained in step c) or d) is additionally infiltrated with at least one aliphatic polyether in an additional step e1). In another specific embodiment, the method is characterised in that the product obtained in step c), d) or e1) is additionally brought into contact with at least one agent for crosslinking the gelatine chains, in step e2). A further aspect of the invention relates to the composite material produced using the method described above, and the use of same, particularly as artificial ivory.