The present disclosure includes a method of producing solid inorganic carbonate compounds by capturing, converting, and storing carbon dioxide comprising providing one or more precursor compound; providing one or more carbon dioxide capture solvent or capture additive; and reacting said one or more precursor compound with said one or more carbon dioxide capture solvent or capture additive under conditions effective to produce one or more solid inorganic carbonate compound. Also disclosed is a method of producing solid inorganic bicarbonate compounds by capturing, converting, and storing carbon dioxide comprising providing one or more precursor compound; providing one or more carbon dioxide capture solvent or capture additive; and reacting said one or more precursor compound with said one or more carbon dioxide capture solvent or capture additive under conditions effective to produce one or more solid inorganic bicarbonate compound. Also disclosed herein are systems for producing solid inorganic carbonate and bicarbonate compounds.

The present disclosure includes a method of producing solid inorganic carbonate compounds by capturing, converting, and storing carbon dioxide comprising providing one or more precursor compound; providing one or more carbon dioxide capture solvent or capture additive; and reacting said one or more precursor compound with said one or more carbon dioxide capture solvent or capture additive under conditions effective to produce one or more solid inorganic carbonate compound. Also disclosed is a method of producing solid inorganic bicarbonate compounds by capturing, converting, and storing carbon dioxide comprising providing one or more precursor compound; providing one or more carbon dioxide capture solvent or capture additive; and reacting said one or more precursor compound with said one or more carbon dioxide capture solvent or capture additive under conditions effective to produce one or more solid inorganic bicarbonate compound. Also disclosed herein are systems for producing solid inorganic carbonate and bicarbonate compounds.

The invention provides a method of producing a carbonate or a bicarbonate of an alkali metal, in solid form, from a sulphate of the alkali metal. The method includes, in a first reaction step, reacting, in aqueous medium, a sulphate of an alkali metal with one or more alkaline earth metal sulphides, thus forming an aqueous solution of one or more sulphides of the alkali metal and one or more sulphates of the alkaline earth metal in solid form. The method also includes, in a second reaction step, in the aqueous solution of one or more sulphides of the alkali metal, reacting the one or more sulphides of the alkali metal with carbon dioxide (CO.sub.2) in gaseous form, thus forming an aqueous solution of a bicarbonate of the alkali metal and gaseous hydrogen sulphide. The method further includes, in a recovery step, recovering a carbonate or the bicarbonate of the alkali metal, in solid form, from the aqueous solution of the bicarbonate of the alkali metal.

The invention provides a method of producing a carbonate or a bicarbonate of an alkali metal, in solid form, from a sulphate of the alkali metal. The method includes, in a first reaction step, reacting, in aqueous medium, a sulphate of an alkali metal with one or more alkaline earth metal sulphides, thus forming an aqueous solution of one or more sulphides of the alkali metal and one or more sulphates of the alkaline earth metal in solid form. The method also includes, in a second reaction step, in the aqueous solution of one or more sulphides of the alkali metal, reacting the one or more sulphides of the alkali metal with carbon dioxide (CO.sub.2) in gaseous form, thus forming an aqueous solution of a bicarbonate of the alkali metal and gaseous hydrogen sulphide. The method further includes, in a recovery step, recovering a carbonate or the bicarbonate of the alkali metal, in solid form, from the aqueous solution of the bicarbonate of the alkali metal.

Disclosed are an additive raw material composition and an additive for superhard material product, a composite binding agent, a superhard material product, a self-sharpening diamond grinding wheel and a method for manufacturing the same. The raw material composition consisting of components in following mass percentage: Bi.sub.2O.sub.3 25%40%, B.sub.2O.sub.3 25%40%, ZnO 5%25%, SiO.sub.2 2%10%, Al.sub.2O.sub.3 2%10%, Na.sub.2CO.sub.3 1%5%, Li.sub.2CO.sub.3 1%-5%, MgCO.sub.3 0%5%, and CaF.sub.2 1%5%. The composite binding agent is prepared from the additive and a metal composite binding agent. The self-sharpening diamond grinding wheel prepared from the composite binding agent has high self-sharpness, high strength, and fine texture, is uniformly consumed during the grinding process, does not need to be trimmed during the process of being used, and maintains good grinding force all the time, fundamentally solving the problems of long trimming time and high trimming cost of the diamond grinding wheel (FIG. 1).

Disclosed are an additive raw material composition and an additive for superhard material product, a composite binding agent, a superhard material product, a self-sharpening diamond grinding wheel and a method for manufacturing the same. The raw material composition consisting of components in following mass percentage: Bi.sub.2O.sub.3 25%40%, B.sub.2O.sub.3 25%40%, ZnO 5%25%, SiO.sub.2 2%10%, Al.sub.2O.sub.3 2%10%, Na.sub.2CO.sub.3 1%5%, Li.sub.2CO.sub.3 1%-5%, MgCO.sub.3 0%5%, and CaF.sub.2 1%5%. The composite binding agent is prepared from the additive and a metal composite binding agent. The self-sharpening diamond grinding wheel prepared from the composite binding agent has high self-sharpness, high strength, and fine texture, is uniformly consumed during the grinding process, does not need to be trimmed during the process of being used, and maintains good grinding force all the time, fundamentally solving the problems of long trimming time and high trimming cost of the diamond grinding wheel (FIG. 1).

A method for preparing alkali metal bicarbonate particles by crystallization from an alkali metal carbonate and/or bicarbonate solution with an additive present in the solution, chosen from among sulfates, sulfonates, polysulfonates, amines, hydroysultaines, polycarboxylates, polysaccharides, polyethers and ether-phenols, alkali metal hexametaphosphate, phosphates, sulfosuccinates, amidosulfonates, amine sulfonates, preferably chosen from among polysaccharides, and such that the additive is present in the solution at a concentration of at least 1 ppm and preferably at most 200 ppm.

A method for preparing alkali metal bicarbonate particles by crystallization from an alkali metal carbonate and/or bicarbonate solution with an additive present in the solution, chosen from among sulfates, sulfonates, polysulfonates, amines, hydroysultaines, polycarboxylates, polysaccharides, polyethers and ether-phenols, alkali metal hexametaphosphate, phosphates, sulfosuccinates, amidosulfonates, amine sulfonates, preferably chosen from among polysaccharides, and such that the additive is present in the solution at a concentration of at least 1 ppm and preferably at most 200 ppm.

Disclosed are an additive raw material composition and an additive for superhard material product, a method for preparing the additive, a composite binding agent, a superhard material product, a self-sharpening diamond grinding wheel and a method for manufacturing the same. The raw material composition consisting of components in following mass percentage: Bi2O3 25%40%, B2O3 25%40%, ZnO 5%25%, SiO2 2%10%, Al2O3 2%10%, Na2CO3 1%5%, Li2CO3 1%5%, MgCO3 0%5%, and CaF2 1%5%. The composite binding agent is prepared from the additive and a metal composite binding agent. The self-sharpening diamond grinding wheel prepared from the composite binding agent has high self-sharpness, high strength, and fine texture, is uniformly consumed during the grinding process, does not need to be trimmed during the process of being used, and maintains good grinding force all the time, fundamentally solving the problems of long trimming time and high trimming cost of the diamond grinding wheel.

Disclosed are an additive raw material composition and an additive for superhard material product, a method for preparing the additive, a composite binding agent, a superhard material product, a self-sharpening diamond grinding wheel and a method for manufacturing the same. The raw material composition consisting of components in following mass percentage: Bi2O3 25%40%, B2O3 25%40%, ZnO 5%25%, SiO2 2%10%, Al2O3 2%10%, Na2CO3 1%5%, Li2CO3 1%5%, MgCO3 0%5%, and CaF2 1%5%. The composite binding agent is prepared from the additive and a metal composite binding agent. The self-sharpening diamond grinding wheel prepared from the composite binding agent has high self-sharpness, high strength, and fine texture, is uniformly consumed during the grinding process, does not need to be trimmed during the process of being used, and maintains good grinding force all the time, fundamentally solving the problems of long trimming time and high trimming cost of the diamond grinding wheel.