All the raw materials should be of less than 25 mm size. If the size of the raw material is bigger than 25 mm, It has to be crushed through a crusher and hammer mill. All the materials are crushed stored in the storage yards through belt conveyors.Cement grinding mill involved includes ball mill, vertical roller mill, high pressure mill, ultrafine mill, trapezium mill etc. SBM is world famous cement grinding mill supplier in China. We customize cement grinding solution according to your requirements.
As the product size decreases the energy required for particle breakage increases rapidly. The pre-crushing stage increases the milling efficiency in the first compartment of the two-compartment mill where coarse milling takes place. Pre-crushing however does not affect milling in the second compartment apart from producing significant amount of final product size.
The cement manufacturing process begins when size reduction process of raw materials such as limestone. The limestone is combined with clay, ground in crushing plant and grinding mills. Sand, iron and bottom ash are then combined with the limestone and clay in a carefully controlled mixture which is ground into a fine powder in a 2000 hp roller mill.
Next, the fine powder is heated as it passes through the Pre-Heater Tower into a large kiln. In the kiln, the powder is heated to 1500 degrees Celsius. The clinker will be produced in the operation. The clinker is combined with small amounts of gypsum and limestone and finely ground in a finishing mill.SBM developed complete sets of cement manufacturing plant including mini cement plant, rotary kiln plants, clinker plants, Portland cement plants. If you are interested, please feel free to contact us for more information.
