what is cement ? this for a scince project we have to do this.?
Cement is ground up limestone. It has the properties of reacting to water and binding itself together
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Cement is composed of five types of minerals such as limestone, shale, silica, pyrite and gypsum. Limestone were grounded from the impact crusher (mostly 1 cubic meter size) to as big as half the coconut shell, then it is will again passed through a jaw crusher from this size, it will be like 3/4. After this the lime stone will pass through the ball mill(a rotating drum consist of different sizes of ball metals) with other ingredients. The product will be like a face powder. (For Semi-dry process) This face powder like shall go through a tilted rotating pan, where a tricle of water will make a sphere size as size as a marble. This sphere size mixture shall pass through the calcining stage(this is removing the moisture in it). After the calcining stage, it will pass through a rotating kiln at a temperature of about 2,700 degrees celcius. This temperature is enough to burn and turn red your mixture(similar to volcanic lava). The product of these is like charcoal and what you call clinker. It will pass through the last process to make it cement. Another ball mill(mostly this is called the finished mill) and with the same texture(face powder like) and mixed this with gypsum then you got portland cement. Now are you ready to turn the soil into like a volcanic lava?
