Synthetic pozzolans are produced using local materials to provide a cementitious material that is uniform in chemistry and properties independent of the location where the materials are obtained. Two methods of production are described. One is a high temperature process in which materials are processed in a semi-molten or molten state. The second process is a low temperature aqueous process.

Synthetic pozzolans are produced using local materials to provide a cementitious material that is uniform in chemistry and properties independent of the location where the materials are obtained. Two methods of production are described. One is a high temperature process in which materials are processed in a semi-molten or molten state. The second process is a low temperature aqueous process.

Synthetic pozzolans are produced using local materials to provide a cementitious material that is uniform in chemistry and properties independent of the location where the materials are obtained. Two methods of production are described. One is a high temperature process in which materials are processed in a semi-molten or molten state. The second process is a low temperature aqueous process.

Synthetic pozzolans are produced using local materials to provide a cementitious material that is uniform in chemistry and properties independent of the location where the materials are obtained. Two methods of production are described. One is a high temperature process in which materials are processed in a semi-molten or molten state. The second process is a low temperature aqueous process.

A low-carbon production method and production system for cement clinker. The production method comprises calcining a metal oxide, which is obtained by converting carbonate in a raw material by means of a methane dry reforming reaction, to form cement clinker, and meanwhile obtaining synthesis gas. The production system uses a reformer furnace for methane dry reforming of carbonate to replace a carbonate decomposition furnace in an existing cement production system.

A method of producing sulfur concrete using precipitated salts. The method comprises obtaining precipitated salts from a salt solution, which comprises: mixing the salt solution with calcium oxide to form a basic suspension; treating the basic suspension using carbon dioxide to cause salts to precipitate from the salt solution; and separating the precipitated salts out from the treated basic suspension to produce a treated salt solution. The method also comprises forming the sulfur concrete, which comprises mixing elemental sulfur with a modifying agent to form a sulfur-containing polymer; pre-heating aggregates comprising at least the precipitated salts; and mixing the aggregates with the sulfur-containing polymer to form the sulfur concrete.

A method of producing sulfur concrete using precipitated salts. The method comprises obtaining precipitated salts from a salt solution, which comprises: mixing the salt solution with calcium oxide to form a basic suspension; treating the basic suspension using carbon dioxide to cause salts to precipitate from the salt solution; and separating the precipitated salts out from the treated basic suspension to produce a treated salt solution. The method also comprises forming the sulfur concrete, which comprises mixing elemental sulfur with a modifying agent to form a sulfur-containing polymer; pre-heating aggregates comprising at least the precipitated salts; and mixing the aggregates with the sulfur-containing polymer to form the sulfur concrete.