The rotary kiln has been the cement high temperature cement calcination equipments since 1885, its specification has experienced from fine to coarse, longer, and then from the long to short development process.
Rotary kiln of cement clinker is accompanied with the appearance of dry process, but at that time many problems can not solve because that the burning process of cement production is not mature, among which the biggest problem is that the raw material of uniformity is poor. Because of this problem, the quality of cement clinker produced by the dry process is very poor and the stability is not good. Wet process is reaseached and provide the quality of cement clinker. Subsequently, cement production equipment manufacturers launch the wet process of cement clinker, and it gradually develop to the direction of large-scale. But The diameter and length of the kiln are too large, and the supporting pier of the rotary kiln is too much, which brings the adverse effect for design of supporting device, stress distribution after deformation and stability of refractory material in kiln.
With the development of technology of preheater and raw material dry prehomogenization technology improvement and application before and after 1950, Rotary kiln which is characterized by dry process has returned to its original development orbit. Preheater completed a lot of heat exchange and part of the material decomposition, which greatly shortern the length of the rotary kiln, and the heat consumption is lower than the wet kiln. This new type kiln greatly improved the rotary kiln thermal load and operating conditions and provided reliable technical support for the cement industry to achieve large-scale. The emergence of new and high efficient cooler, reasonable design and flexible control of multi channel burner launch and application make the function of cement rotary kiln be changed, which has realized the leap of the cement technology.
Henan Zhengzhou Mining Machinery Co.,Ltd researchs and develops a variety of cement calcination equipments, such as cement rotary kiln, cement dryer so on. We can also provide comprehensive technical service!