Inorganic non-metallic materials industry broadly includes refractory materials cement, glass, ceramics, building materials (bricks, tiles, etc.), enamel, abrasives and other industries. Thermal furnace used in these industries are categorized in many ways, such as both by the industry to points, but also according to its use to points (such as baking what products, known as what the kiln), but also according to the baking temperature to points and so on. In these classification methods, some kilns for certain industries (such as glass industry with the pool kiln, crucible kiln, etc.), some kilns for a number of industries in common, such as tunnel kilns are widely used in ceramics, refractory materials, building materials and other industries.
Refractory materials industry uses more types of thermal kilns. Can be roughly divided into three categories: a class of raw materials calcining kiln, such as vertical kiln and rotary kiln; the second category is the product firing kiln, such as tunnel kiln, inverted flame kiln, shuttle kiln, etc.; the third category is the raw materials (generally high-purity raw materials) light kiln, such as multi-storey furnaces, boiling furnaces, suspension of light kiln and so on. In addition, the rotary kiln for calcining activated lime, double beam vertical kiln is also a light kiln. Of course, there are also some baking equipment for non-fired products.
The main thermal kilns in the cement industry are rotary kilns and vertical kilns. The traditional rotary kiln is divided into wet, dry and semi-dry. With the progress of science and technology, the new dry cement rotary kiln system centered on suspension preheating and kiln decomposition technology has replaced the traditional rotary kiln and gained an advantageous position in cement production.
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