The History and Current Situation of Rotary Kiln

Topics: Cement, Portland cement, Concrete Pages: 2 (402 words) Published: April 1, 2012
Rotary kiln belongs to building material equipment, and it can be divided into cement kiln, metallurgy chemical kiln and lime kiln according to different materials. Cement kiln is used for making of cement clinker and there are dry and wet methods to make cement. Metallurgy chemical kiln is used in metallurgy industry and ironworks for lean iron ore, chromium ore and ferronickel ore calcimine. The application of rotary kiln originated from the cement production. British cementer J.Asp invented soil shaft kiln of intermittent operation in 1824; A German invented multilayer shaft kiln of continuous operation in1883; British E Ransome invented the rotary kiln in 1885 which was put into production after obtaining the patent in England and America and gained considerable economic benefits. The invention of rotary kiln makes the cement industry develop rapidly and promotes the study on application of rotary kiln. The rotary kiln is used in many industrial fields and takes a more important role in these productions. The rotary kiln becomes the core equipment in enterprise production. The technical characteristic and service behavior of rotary kiln are essential to the quality, output and cost of the product. "As long as the big kiln is running, the money is coming." This ballad is a vivid description on the importance of rotary kiln in production. The rotary kiln is most often used in cement industry. The whole production technology of cement is summarized as "two grinding and one burning". "One burning" means the technological process of burning the ground and prepared raw material into clinker by the high temperature of rotary kiln. So the rotary kiln is the main engine in cement production, and is commonly referred to as "heart" of cement factory. In building material industry, besides roasting cement clinker, the rotary kiln is also used for roasting clay, limestone and drying slag, etc. Rotary kiln is used for calcimine of high aluminum vandal oche...
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