Patent ID: 8252222

Claim:
A process for shaping a sulphur cement product to provide a shaped solid sulphur cement product, wherein the process comprises: filling a mould having an inner surface with a molten sulphur cement product; cooling the molten sulphur cement product at a controlled rate by limiting the heat flow to at most 100 W/m 2 K of diffused heat through the mould in a direction perpendicular to the inner surface of the mould by contacting the molten sulphur cement product with the inner surface, which comprises a material of either a polymeric material selected from the group consisting of silicon-based rubber, polycarbonate, poly(ethylene terephthalate), polyimide, polyamide, fluoropolymer or a combination thereof, or a silicon-based glass, or a combination of the polymeric material and the silicon-based glass, and wherein the material has thermal properties providing for the controlled rate of cooling.