The act or process of disintegrating a substance, or rendering it friable by the action of heat, esp. by the expulsion of some volatile matter, as when carbonic and acid is expelled from carbonate of calcium in the burning of limestone in order to make lime.
The act or process of reducing a metal to an oxide or metallic calx; oxidation.
formation of a calx, i.e., oxidation of a metal, often by roasting. [Black; Lavoisier 1, 2, & 3; Rey
A procedure by which the bejeezus is driven from a substance, often by intense heat.
The use of heat to break down chemical compounds.
the conversion of metals into their oxides as a result of heating to a high temperature
Chemical process of oxidisation by heating material to a friable substance.
A chemical operation involving roasting a substance in an open dish over a hot fire. The product of calcination is referred to as a calx or calcinate.
is the heating of a substance so that a physical, or chemical change occurs. In the case of limestone, it refers to the dissociation of calcium and magnesium carbonates.
in this context the conversion of carbonate to lime.
the final stage in the Bayer process in which washed and dried gibbsite (alumina hydrate) is heated at high temperatures to drive off the water of crystallisation (dehydration) and obtain alumina, a fine white powder.
a high-temperature reaction whereby one solid material dissociates to form a gas and another solid.
A process whereby a material is heated to a high temperature to alter its chemical or physical characteristics. When kaolinite is calcined, its crystalline structure is converted to an amorphous metakaolin that is reactive in concrete.
A process in which a material is heated to a high temperature to drive off volatile matter (to remove organic material) or to effect changes (as oxidation or pulverization or to convert it to nodular form). Calciners and nodulizing kilns are considered to be similar units. The temperature is kept below the fusion point.
Decomposition due to the loss of bound water and carbon dioxide.
heating material to release volatile constituents or change the crystal structure.
The removal of CO2 from raw lime forming CaO or the removal of CO2 from raw dolomitic lime forming MgO. Process requires a great deal of heat.
A process in which a material is heated to a high temperature without fusing, so that hydrates, carbonates, or other compounds are decomposed and the volatile material is expelled.
Reduction of substances, usually mineral, by fire, to powder or ash by the removal of moisture; subjecting a substance to a roasting temperature; sometimes used to describe other processes, as the addition of corrosive substances.
Calcination (also referred to as Calcining) is thermal treatment process applied to ores and other solid materials in order to bring about a thermal decomposition, phase transition, or removal of a volatile fraction. The calcination process normally takes place at temperatures below the melting point of the product materials. Calcination is to be distinguished from roasting, in which more complex gas-solid reaction take place between the furnace atmosphere and the solids.
