Lime kiln raw materials? Specifically what kind of ore?
Limestone, calcite and other sedimentary rocks can be, the chemical composition is calcium carbonate, can also use the shells, the same chemical composition is calcium carbonate.
Limestone is the main component of calcium carbonate, and calcium oxide is the main component of lime. The basic principle of firing lime is to use high temperature to decompose the calcium carbonate in limestone into lime.
Its response is CaCO3 CaO+CO2-42.5KcaI. The technological process of the utility model is that the limestone and the fuel are loaded into the lime kiln (if the fuel gas is fed into the pipeline and the burner), the temperature of the furnace is started to decompose at 850 DEG C, and the calcination is completed at a temperature of 1200 degrees. Complete the production of quicklime products. Modern mixed burning lime kiln of limestone and other kilns are basically the same, more than 53% calcium oxide content of silicon oxide, Magnesium Oxide, iron oxide, alumina and other harmful ingredients and not more than 2%. Particle size requirements within 1:2. Grain size is 30-60; 40-80; 50-100 is more appropriate. To sum up, it is known that the particle size is proportional to the calcination time. More than 100 should not be used in the modern environmental protection energy-saving lime kiln. Burning a ton of lime requires 1.78 tons of limestone. Calcium carbonate is a kind of inorganic compound, which is the main component of limestone and limestone. It is a common material on the earth, can be found in the rock. It is the main component of the back shell and snail shell. According to the different production methods of calcium carbonate, calcium carbonate can be divided into heavy calcium carbonate, light calcium carbonate, colloidal calcium carbonate and crystalline calcium carbonate. Chalk, by marine shell and shell accumulation, is mainly composed of calcium carbonate, composed of cryptocrystalline or amorphous fine loose color white, shiny chalk in the calcium carbonate content is more than 90%, a soft or hard white stone Liejiang often add chalk (mainly calcium carbonate), red clay flint and etc.
