Limestone crusher


The main components of limestone are calcium carbonate (CaCO3) and Mohs hardness 3. After the limestone is mined from the limestone, it is crushed to form limestone particles, that is, stones, sand, or further ground to form limestone powder. It is widely used in building materials, highways, metallurgy, chemical industry and other industries. Lime is divided into quicklime and slaked lime. Limestone is calcined into calcium oxide CaO (commonly known as quicklime) after calcination, which is generally lumpy and is used in water quality treatment, asphalt improvement, desulfurization, building materials, medicine and other industries. Quicklime becomes slaked lime by absorbing moisture or adding water. The main component is calcium hydroxide Ca (OH) 2, which is used in environmental protection, medicine, food and other industries.


Limestone processing technology

Limestone has different processing technologies for different uses, but these processing technologies are also closely related. From coarse crushing to fine crushing, to grinding, to ultra fine crushing, some processing processes are optional due to different uses. The processing of limestone is mainly crushing, grading and producing lime, slaked lime, precipitated calcium carbonate, ultrafine (nano) calcium carbonate, carbon dioxide, etc. Limestone generally adopts dry pulverization process. For metallurgy and road limestone, the ore can be crushed and screened. For the production of fine powder products, the ore is crushed directly by a Raymond mill after being crushed by a jaw crusher, an impact crusher or a cone crusher, and the product fineness is 100-325 mesh. The specific processing process is as follows:

  • The first stage: production of stone
  • Use crusher equipment to break large pieces of limestone. The configuration of jaw crusher + impact crusher + vibrating screen + conveyor can be used to produce coarse aggregate for construction;

  • The second stage: medium and fine crushing production sand
  • After the coarse crushed material conveyed to the counterattack is crushed by counterattack, a circular vibrating screen is used to screen the crushed and crushed materials. Larger particles are returned to the counterattack and broken again. For finer products or shaping, The crushed material is sent to a sand making machine for further crushing and shaping.

  • The third stage: grinding
  • Limestone can be used for sand making and grinding. Using YMG high-pressure mill complete set or integrated suspension roller mill can achieve efficient milling, and has a very high pass rate, and the fineness can reach 200-300 mesh. .

  • The fourth stage: production of ultrafine powder
  • The production of ultra-fine powder is mainly applied to advanced fillers, such as cosmetics. The beauty action of women around the world has promoted the hot sales of cosmetics and stimulated the development of ultrafine powders. Jianye SCM Superfine Mill can produce fillers in the nanometer range.

    Types of limestone crusher

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