Wet process of cement manufacturing pdf file

Presently, about 78% of europes cement production is from dry process kilns, a. Comparison of dry process and wet process of cement manufacture. Here we will discuss how to manufacture portland cement by wet process on industrial scale. European commission reference document on best available techniques in the. Cement is a greenish grey colored powder, made of calcined mixtures of clay and limestone. The wet process of cement manufacturing involves adding water to finely crushed raw material, such as limestone, clay or iron ore, in a proportion of 35 to 50 percent water to 50 to 65 percent raw material to make a slurry that is fed into a cement kiln, whereas no water is added in the dry process. Setting and curing and cement manufacturing process. Comparison between wet and dry process wet process dry process 1 moisture content of the slurry is 3550% 1 moisture content of the pellets is 12% 2 size of the kiln needed to manufacture the cement is bigger 2 size of the kiln needed to manufacture the cement is smaller 3 the amount of heat required is higher, so the required fuel. Reference document on best available techniques in the cement, lime and magnesium. Wet process of cement manufacturing cement wet process. In preparation of this document the cement industry has carefully studied the. What are the difference between tender and contract documents.

The wet process of cement manufacturing refers to grinding raw material into slurry after mixing with water and then feeding them into the wet process kiln for drying and calcination and finally forming clinker. Manufacturing of cement by dry and wet process manufacturing of cement in the manufacturing of cement, the following three important and distinct operations occur. Burning grinding the process, by which cement is manufactured, depends upon the technique adopted in the mixing of raw materials. Material and energy flow diagram for wet process manufacturing of cement. Roasting cement considered one of the most important processing steps where they are roasting constituent components through. Energy and cost analysis of cement production using the. The raw material processing operations differ somewhat for wet and dry processes, as described below. The wet process of cement manufacturing too popular for several decades because of the possibility of more accurate control while raw material mixing. Manufacture of portland cement materials and process. Cement raw materials are received with an initial moisture. The manufacture of cement by wet process is energy intensive and thus uneconomical as compared to dry process and semi dry process. The cement manufacturing is done by majorly by two methods known as wet process and dry process depending on their mixing is done with water or without water. Cement manufacturing a wet process with the flow diagram.