Cement products production process
Cement production line consists of a range of facilities, including raw material preparation, raw material grinding, Raw material homogenization, cement clinker sintering, cement grinding , packaging and transport etc.the equipment of Cement production line include: cement rotary kiln, cyclone preheater, grate cooler etc.
Cement production is a relatively complex physical and chemical processes, with different raw material preparation methods, cement production can be divided into dry (including semi-dry) and wet (including semi-wet method). Today we explain for everybody dry cement production line.
1). The dry cement process consists of many simultaneous and continuous operations using some of the largest moving machinery in manufacturing. Over 5000 sensors and 50 computers allow the entire operation to be controlled by a single operator from a central control room.
2). The limestone is combined with clay, ground in a crusher and fed into the additive silos. Sand, iron and bottom ash are then combined with the limestone and clay in a carefully controlled mixture which is ground into a fine powder .
3). Next, the fine powder is heated as it passes through the Pre-Heater Tower into a large kiln, which is over half the length of a football field and 4.2 metres in diameter. In the kiln, the powder is heated to 1500 degrees Celsius. This creates a new product, called clinker, which resembles pellets about the size of marbles.
4). The clinker is combined with small amounts of gypsum processing, limestone and finely ground in a finishing mill. The mill is a large revolving cylinder containing 250 tonnes of steel balls that is driven by a 4000 hp motor. The finished cement is ground so fine that it can pass through a sieve that will hold water.
5). The cement mill process begins when limestone, the basic raw material used to make cement, is transported by rail to the plant from the limestone .