Limestone

工程案例

Case

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物料类型

Materiel introduction

Limestone is a carbonate mineral with the chemical formula of CaCO3. Pure limestone is also known as calcite; white color, brittle in characteristics; hardness: 3; density: 2.71g/cm3; limestone belongs to trigonal system; the common crystal is a rhombohedron. When Ca is replaced by Fe, Mn or Zn, the density will be larger. Pure limestone will decompose When heated to 530℃， and the decomposition become fierce when heated to 910℃ and started to absorb heat and release CO2. Pure limestone is scarce in nature. Limestone and magnesium carbonate can form dolomite or isomorphous compounds. The main impurity is monox, which usually appears in quartz and flint mines minerals; sulphide impurities include pyrite, etc.; simaldrate impurities as clay, feldspar and mica, etc. Sometimes limestone contains organics as coal and asphaltos, etc. That’s why the colors of limestone with impurities can be light green, yellow, brown, red, grey or black, etc.

应用领域

Limestone经过磨粉机的深度加工，可以广泛的应用于以下行业

(1) Construction industry: used for the production of cement and the burning of lime;

(2) Metallurgical industry: used as flux;

(3) Chemical industry: used to make alkali, bleaching powder and fertilizer, etc.;

(4) Food industry: used as clarifying agent;

(5) Agriculture: used to improve soil;

(6) Plastic industry: used as filler;

(7) Coating industry: used as a variety of architectural coatings;

(8) Papermaking industry: used as alkaline filler;

(9) Rubber industry: used as basic filler used;

(10)Environmental protection industry: used as adsorbent.