Cement Industry
Application
Cement is essential to maintaining the quality of life around our world. Cement is used and enjoyed in nearly all aspects of our daily lives; residential and commercial construction, roads, highways, bridges, dams, water and sewage treatment plants, airports and tunnels. While the average person pays little attention to its benefit, cement is making a major contribution to improving the quality of life for all of us.
With its process know-how, high quality – reliable machines and services, HAZEMAG plays an important and highly contributing role in the crushing and processing of the raw materials that ultimately result in this essential product we all call cement.
For the production of cement, first and foremost a blend of limestone and clay (or marl) is used. In addition, different additives or correction materials, such as quartz sand, materials containing iron oxide, gypsum, schist or similar are applied. As complex and customized is the process of making cement, so are the systems and technologies that are required required. A common factor, however, always remains in place: the basic material must be crushed.
In a vertical roller mill or ball mill, the pre-crushed materials are further ground. The optimum feed grain size for each one of these mills is different; each normally requiring different pre-crushing systems for the production of the correct feed granulation. If not approached correctly, such mistakes can lead to a significant rise in the needed energy costs associated for the comminution or material pulverizing process.
An important parameter for the production of cement is the LSF (lime saturation factor). The LSF is defined as the rate of the most important chemical component, which has to be kept a constant within narrow limits. By selecting the first stage crushing plant or system the process of influencing the LSF already begins.
Control over the components, such as the limestone and clay (or marl) is indispensable. In many cases, subject to the material characteristics and percent-ages of each, the limestone and clay can be processed together in a single crusher. Under this condition, a certain level of homogenization is already taking place.
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