Production of cement requires a lot of limestone, so the quality of limestone will directly affect the quality of cement production.
Distinguish limestone quality:The judgment of limestone is mainly based on the content of calcium carbonate, alumina, iron oxide content, phosphorus content, sulfur content and so on.Quality requirements for limestone, depending on the use of different. In general, metallurgy, chemical industry and other special industrial sectors on limestone purity than the construction industry and agriculture, in addition to the current China metallurgical industry developed in People's Republic of China ZBD60001-85 professional standards for limestone and other industries were not developed national standards or professional standards, and by the application of the departments to formulate relevant standards.
Cement industry: for the production of cement lime raw material quality requirements, is the content of calcium carbonate is greater than 75%, the alumina content is less than 2%. For non crystalline limestone, the grain size is 30~80mm.
Glass industry: Generally speaking, according to the different requirements of the quality of the glass and the selection of different CaO content of limestone, but the requirements of the limestone is amorphous and stable ingredients.
