To reduce to a powder, or to a friable state, by the action of heat; to expel volatile matter from by means of heat, as carbonic acid from limestone, and thus (usually) to produce disintegration; as to, calcine bones.
To oxidize, as a metal by the action of heat; to reduce to a metallic calx.
To be converted into a powder or friable substance, or into a calx, by the action of heat.
A form of high-level waste produced from defense reactor fuel reprocessing waste (at the Idaho Chemical Processing Plant) by heating to a temperature below the melting point to bring about loss of moisture and nonradioactive volatile oxides, thus producing a chemically stable granular powder.
To heat to red heat or more, after which the material is usually crushed ready for use.
Heating materials to a point where they are changed to powder or calx and releasing water from the crystallized material.
heat a substance so that it oxidizes or reduces
The removal of water molecules in hydrates by heat.
Describes the high temperature treatment of catalyst precursor materials, converting them to strong, stable solids. The term comes from ceramics technology, where calcining or firing is used to convert clay intermediates (green materials) to finished products.
To purify a material through the action of heating to red heat 1292-1382 °F.
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.
To heat a ceramic material or mixture to the temperature necessary to drive off the chemical water, carbon dioxide, and other volatile gases. Essentially a purifying process. Some fusion may occur in which case the material must be ground. This is the process used in the production of plaster of Paris, Portland cement, ceramic stains, and so forth. 2) A ceramic material or mixture fired to less than fusion for use as a constituent in a ceramic composition.
To alter composition or physical state by heating to a specific temperature for a specific length of time.
The process of heating a mineral to produce a change in its chemical structure.
Reduce to calcium carbonate. To purify a substance by subjecting it to high temperatures.
1. To alter composition or physical state by heating. 2. To drive off or lose chemically combined water by action of heat thereby altering the chemical and physical characteristics of a material. 3. To release part or all of the water of crystallization from gypsum by the application of heat. 4. A ceramic mineral or mixture fired to less than fusion for use as a constituent in a ceramic composition.
