subject: The Cement Production Process [print this page] The cement production process The cement production process
A set of production of cement in the cement production process, generally can be divided into raw material preparation, clinker calcination and cement mill making.
(1) raw material grinding in the cement production process
Divided into dry and wet, and dry method commonly used for closed-circuit operating systems. Raw materials after cement mill grinded into powder, then into machine sorting, coarse particles return back into the cement mill grinding line grinding operation, and the majority of material in the mill at the same time drying and grinding process used in the cement equipment tube mill, in unloading the mill and roller mill. wet commonly used tube mill, baseball grinding time by the cement mill is no longer returning open system, but also with a grader or curved-screen closed-circuit system.
(2) in the cement production process of the calcined
Calcined clinker cement equipment are two types of shaft kiln and rotary kiln, vertical kiln for smaller factories in the production, large and medium-sized plant should adopt the rotary kiln.
vertical kiln:
Kiln shell in vertical rotation known as the shaft kiln. Sub-ordinary shaft kiln and mechanized vertical kiln, Ordinary shaft kiln is artificial feeding and artificial discharge or mechanical feeding, artificial discharge; mechanical shaft kiln mechanical feeding and mechanical unloading mechanical shaft kiln is continuous operation, production, quality and labor productivity than the ordinary shaft kiln. in recent years, most of the shaft kiln abroad has been the rotary kiln to replace, but in the current Chinese cement industry, vertical kiln is still occupies an important position. small cement plant application of mechanized vertical kiln according to the requirements of building materials and technology policy to gradually replace the ordinary shaft kiln.
rotary kiln:
Kiln shell in horizontal (a slight slope of about 3%), and for rotary movement known as the rotary kiln calcination to the raw material powder dry process kiln and calcined slurry (water content is usually about 35%) wet kiln.
