The cement equipment include cement rotary kiln, cyclone preheater and grate cooler. Cement rotary kiln is the main equipment for calcining cement clinker which has been widely used in cement, metallurgy, chemical and other industries. The equipment consists of the cylinder, bearing devices, with gear wheel bearing devices, gear, activities kiln head, kiln seals, combustion devices and other components. The rotary kiln has a simple structure and reliable operation.
A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated. Crushing is the process of transferring a force amplified by mechanical advantage through a material made of molecules that bond together more strongly, and resist deformation more, than those in the material being crushed do. Crushing devices hold material between two parallel or tangent solid surfaces, and apply sufficient force to bring the surfaces together to generate enough energy within the material being crushed so that its molecules separate from (fracturing), or change alignment in relation to (deformation), each other. The earliest crushers were hand-held stones, where the weight of the stone provided a boost to muscle power, used against a stone anvil. Querns and mortars are types of these crushing devices.
Cement production process: materials→ drying →milling →selecting powder → cement
In the cement production process, drying and milling are the two most important steps.
With the rapid development of China's economy in recent years, the country increases investment to perfect the basic service facilities, thus it has brought a lot of opportunities for breakneck development of cement industry. China's cement industry has a fairly large scale through the rapid development in recent years. The cement production enterprises have turned into multiple industry from a single cement production. At the same time, the longitudinal integration of sand aggregate, concrete, cement products has become an inevitable trend in the development of the industry, and the industry will take cement as the core, take, concrete as leverage to do big industry chain of building materials.
The cement production equipment can be divided into dry process cement production line (including semi-dry method) and wet cement production line (including the semi-wet method) according to different preparation methods of the raw material.
In the cement production process, most of the raw material should be crushed, such as limestone, clay, iron ore and coal. Limestone is the largest amount of production of cement raw materials.
Screw classifier : http://www.china-crusher.com/spiral-classifier5.html
Impact crusher : http://www.best-crushers.com/impactcrusher.htm
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