Fossil fuels are non-renewable energy. Fossil fuel in the form of coal. There are several types which are thermal properties, and not the same compound and quantities of coal are useful in many ways. That each side has both advantages and disadvantages are mixed. In the cement manufacturing industry, it will absorb SO2 by limestone that the additives were applied as raw material of cement per. By then, we were educated in the subject of coal, which fuels most valuable in many ways. We have, for example, bringing the coal used in the production of cement and cement for each type, there is the principle that vary according to the nature of the job. Cement has 5 steps: 1. mining and preparation of raw materials. 2. the burning of cement grinding grain 3. object 4. crushing cement 5. packaging and transport of cement, cement production process with dry and wet process 2 process properties of each type of cement can be divided according to the type of work 3 major categories:1. the cement for the structure and casting concrete products.2. construction for cement mortars3. cement for special tasks.That each category has its own unique properties that differ from one another and suitable for various applications.
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