Rotary kiln generally is divided into the rotary kiln, also called XuanYao, and shaft kiln; Kiln shell is main part of rotary kiln, the thickness of the steel plate is about 40 mm. The temperature is about 1000 centigrade in kiln shell; the high temperature is 1600 centigrade. So it will be the key to prevent heat losses for kiln shell. In order to heat preservation, there is a layer refractory brick around 200 mm or the SiC brick inside the traditional kiln shell. If so, kiln shell weight is large. When kiln shell works, because of relationship between high temperature and the bearing, kiln shell will have the deformation of the elliptic type, so that it will produce stress for kiln brick, and influent the life of brick kiln.
In building material, metallurgy, chemical, environmental protection and many other production industry, we widely use rotary equipments to process solid material with mechanical, physical or chemical method, this kind of equipment is called rotary kiln. Now there is one of heat insulation materials for rotary kiln, which is heat-resistance insulation coating, the model is ZS-1, water-based inorganic coating. The size of heat resistance is in-80-1800 centigrade; The coefficient of thermal conductivity is only 0.03 W/m.K; It has a feature of small specific gravity, light weight, so it greatly can reduce the weight of the object besmear to brush. ZS-1 heat-resistance insulation coating can effectively restrain and shield the radiant heat and heat conduction of infrared.
The efficiency of heat insulation may reach 90%. It can also restrain the thermal radiation and heat loss of high temperature object in the transmission; it can keep 70% heat which is not lost for the internal rotary kiln. In all, the coating has advantages of fire retardant, abrasion resistance, compression resistance, insulation, acid and alkali resistance, light weight, convenient construction, the long service life, etc.
dry process rotary kiln: http://www.chinaquarry.com/products_show/c_rotary_kiln.html