What are the uses of limestone powder? What kind of grinding equipment is used for limestone grinding? Limestone powder is widely used in life and industry. It is a carbonate rock mainly composed of calcite. Sometimes contain dolomite, clay minerals and detrital minerals. There are gray, off-white, gray-black, yellow, light red, brown-red and other colors. Generally not hard, violent chemical reaction occurs with dilute hydrochloric acid. According to the classification of origin, it belongs to sedimentary rock. What equipment is used in the limestone grinding production line? As a mill manufacturer, Guilin Hongcheng recommends HLM vertical grinding mill.
1. Application of limestone powder
(1) Calcium hydroxide: Calcium carbonate can be directly processed into stone and fired into quicklime. Lime includes quicklime and slaked lime. The main component of quicklime is CaO, which is generally lumpy, pure white, and light gray or light yellow when it contains impurities. Quicklime becomes slaked lime when it absorbs moisture or adds water. Slaked lime is also called slaked lime, and its main component is Ca(OH)2. Slaked lime is formulated into lime slurry, lime paste, lime mortar, etc., which are used as coating materials and brick adhesives. Cement is made by mixing limestone and clay and calcining at high temperature.
(2) Glass: Glass is made by mixing limestone, quartz sand, soda ash (sodium carbonate), etc., and melting at high temperature. Limestone is used as a flux in ironmaking to remove gangue. Quicklime is used as slagging material in steelmaking to remove harmful impurities such as sulfur and phosphorus.
(3) Chemical industry: Soda ash is made from raw materials such as limestone, salt, and ammonia through multi-step reactions (Solvay method). Caustic soda is produced by the reaction of slaked lime and soda ash (causticization method). Bleach is made by reacting pure slaked lime with chlorine gas. Calcium chloride, calcium nitrate, calcium sulfite and other important calcium salts are made by chemical processing of limestone. Slaked lime can remove the temporary hardness of water and is used as a hard water softener. Limestone is burnt and processed to produce relatively pure powdered calcium carbonate, which is used as a filling material for rubber, plastic, paper, toothpaste, cosmetics, etc. Soda lime made from lime and caustic soda, used as an absorbent for carbon dioxide. Quicklime is used as a desiccant and disinfectant.
(4) Agriculture: In agriculture, quicklime is used to prepare pesticides such as lime sulfur mixture and Bordeaux mixture. Applying slaked lime to the soil can neutralize the acidity of the soil, improve the structure of the soil, and supply calcium needed by plants. Brush the trunk with lime slurry to protect the tree.
(5) Building materials: Calcium carbonate is an important building material. The white and pure calcium carbonate rock is called white marble, which can be directly used as decorative stone pillars or handicrafts; the calcium carbonate with beautiful patterns due to impurities is called marble, which is used to veneer the exterior and interior walls of buildings or lay the ground; The dense calcium carbonate rock (limestone) can also be used directly for building houses, but the main use of limestone is to produce cement. The finished product is obtained by crushing, grading, and separating white stone containing more than 90% CaCO3 with Raymond mill or other high-pressure mills.
2. Limestone mill production line equipment
Grinding limestone powder, according to the different fineness and output requirements, the type of grinding machine used is different. We usually use HLM vertical grinding machine to grind limestone in the market. This is a new type of energy-saving and environmentally friendly grinding equipment. The system is sealed as a whole, operates under full negative pressure, has small vibration, low noise, and no dust spillage. It is widely used in coal mines, cement, slag, metallurgy, chemical and other milling fields. HLM vertical mill is a large-scale milling production equipment carefully developed by Guilin Hongcheng. The equipment focuses on the field of milling, with strong adaptability to materials, advanced grinding technology, high efficiency, energy saving and environmental protection, wide range of grinding fields, large output, low energy consumption, energy saving and environmental protection. It is an ideal choice for users.
Limestone powder has many uses, and we only need a suitable limestone mill production line to bring considerable profits to the enterprise. Guilin Hongcheng is customer-centric, with excellent product quality and first-class after-sales service, and continues to provide high-quality mill production line solutions for milling companies. Quality makes the future, welcome to leave a message for consultation.