Rotating Calcining Kiln or Rotary Kiln

Topics: Chemical engineering, Cement, Cement kiln Pages: 2 (453 words) Published: April 11, 2012
Rotary kiln is refers to rotating calcining kiln (also known as rotating kiln), which belongs to thermal equipment. Rotary kiln can be divided into metallurgy kiln, chemical engineering kiln, and building material kiln according to its different dealing materials. The building material kiln is mainly used in calcining clinker cement, limestone and porcelain granule. Metallurgy rotary kiln is mainly used for the magnetizing calcining of lean iron ore in iron and steel plant in metallurgy industry, the chromites and josephinite oxidizing calcining , calcining of dewalquite and clinker aggregate and aluminum hydroxide roasting in aluminum factory; Chemical engineering rotary kiln is used in chemical plant for chromium ore and chromium ore powder roasting. The limestone kiln( activity limestone kiln ) is used for calcining activity lime and dolomite in iron and steel plant and ferroalloy works Rotary kiln is the equipment which is widely used for dealing with solid material mechanically, physically and chemically in building material, metallurgy, chemical, engineering and environment protection industries. Rotary kiln belongs to building materials equipment.The rotary kiln can be divided into cement kiln, metallurgy chemical kiln and lime kiln according to the different handling materials. During the operation of rotary kiln, fuel burning speed directly influences the quality and production of materials roasting. As a result, customers should have a understanding of influencing factors of rotary kiln fuel burning speed. The main influencing factors are not the reaction of fuel itself but the mixture of coal gas and air as well as raising-heat speed of heated flammable gas after mixing. The mixing degree and the mixing speed between fuel and air(the proportion that help air burn and temperature of heated material) have determined the burning speed and the burning degree in that ignition reaction is faster than mixture. Therefore, preheating the air and coal gas is...
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