In preparation of this document the cement industry has carefully studied the. Reference document on best available techniques in the cement, lime and magnesium. 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. 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. European commission reference document on best available techniques in the. The kiln has to operate continuously in order to ensure a steady regime, and therefore uniformity of clinker. Cement manufacturing components of a cement planthis page and the linked pages below summarize the cement manufacturing process from the perspective.
The manufacture of cement by wet process is energy intensive and thus uneconomical as compared to dry process and semi dry process. Material and energy flow diagram for wet process manufacturing of cement. The wet process of cement manufacturing too popular for several decades because of the possibility of more accurate control while raw material mixing. Cement raw materials are received with an initial moisture. 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. Each process is explained chemical reactions for manufacture of portland cement. Roasting cement considered one of the most important processing steps where they are roasting constituent components through. The larger existing kiln in a wet process plant produces 3600 tonnes of clinker per day. Setting and curing and cement manufacturing process. Wet process of cement manufacturing cement wet process. 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. Manufacture of portland cement materials and process. Cement process include wet, dry, wet dry process and finish process.
Presently, about 78% of europes cement production is from dry process kilns, a. Cement is a greenish grey colored powder, made of calcined mixtures of clay and limestone. Manufacturing of cement involves various raw materials and processes. The raw material processing operations differ somewhat for wet and dry processes, as described below. What are the difference between tender and contract documents. When mixed with water becomes a hard and strong building material. Manufacturing of cement by dry and wet process manufacturing of cement in the manufacturing of cement, the following three important and distinct operations occur. Cement manufacturing a wet process with the flow diagram. Energy and cost analysis of cement production using the. General information about the cement industry 2 epa. 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. Comparison of dry process and wet process of cement manufacture.