Limestone Product Features and Market
Lime is an air-hardening inorganic gelling material with calcium oxide as the main component. It is made of minerals with high calcium carbonate content such as limestone, dolomite, chalk, and shells, and is calcined at 900-1100 °C.
1. Lime product features
Since the production raw materials often contain magnesium carbonate (MgCO3), the quicklime also contains the secondary component magnesium oxide (MgO). According to the content of magnesium oxide, quicklime is divided into calcareous lime (MgO≤5%) and magnesia lime (MgO >5%).
Quicklime is white or gray lumpy. For ease of use, lumpy quicklime often needs to be processed into quicklime powder, slaked lime powder or lime paste. Quicklime powder is a fine powder obtained by grinding massive quicklime, and its main component is CaO; slaked lime powder is a powder obtained by slaking lumpy quicklime with an appropriate amount of water, also known as slaked lime, and its main component is Ca(OH)2; Lime paste is a paste obtained by slaking block quicklime with more water (about 3 to 4 times the volume of quicklime). It is also called lime slurry, and its main component is also Ca(OH)2.
2. Lime product market overview
At present, the vast majority of lime is still used in metallurgy, chemical industry and building materials industry. For example, slaked lime is formulated into lime slurry, lime plaster, lime mortar, etc., which are used as coating materials and brick adhesives.
Lime is an indispensable auxiliary raw material in the steel production process. In addition, the use of lime in other fields is still in the development and growth stage, such as sewage treatment, dust removal, dry desulfurization, semi-dry desulfurization, and denitrification in the environmental protection industry. As a soil improver in agriculture, as a desiccant in the food industry, etc., with the development of the industry in the direction of refinement, diversification and specialization, the application fields of lime products will be wider, which will help stimulate industry demand. Especially with the enhancement of people’s awareness of environmental protection, the application market prospect of lime in the environmental protection industry is broad.
Processing technology of grinding and classifying
After the ultra-fine grinding and grading of non-metallic mineral deep processing products can greatly create profits, but also improve the quality of related products; With the continuous exploitation of mineral resources, the grade of minable stone is constantly declining, and the quality of most minerals can not meet the requirements of use. It needs to be processed by crushing and other processing technologies before meeting the standard of use. So the pulverization process is more and more important in the industrial process of quartz processing.