Cement production process
New dry-process cement production line, because the scale is constantly expanding, in order to stabilize the quality of production, supporting the "two grinding and one burning" process more and more. The main increase is the raw material pre-homogenization process, raw material homogenization process, multi-channel burner application, accurate batching system, cement homogenization system, automatic loading system, DCS central control system and so on. The production process can be divided into raw material handling, raw material batching, raw material grinding, raw material homogenization, preheating decomposition, clinker calcination, burner system, coal powder preparation, clinker cooling, gypsum crushing, mixed material handling, cement mill batching, cement grinding, storage and packaging.
Cement grinding power consumption the lower the better
In fact, "grinding power consumption" and "clinker mixing", is in accordance with a certain relationship between each other, the benefits of saving electricity and reduce the benefits of clinker mixing is often not equal! This is related to the price of electricity, the price of clinker, and the price of mixed materials. We should also be based on the specific circumstances of the specific accounting, to see whether the cement grinding a little thicker to save a little electricity cost-effective, or the cement grinding a little finer to increase a few degrees of electricity, reduce the clinker mixing amount cost-effective. For example, the clinker base and grinding station is not the same, it should not use the same standard requirements.
Clinker base due to clinker is their own production, clinker cost is relatively low, should be more than the grinding station to use a little clinker, spend less on electricity, may be more cost-effective; if the reduction in cement efficiency can be made up for in the clinker line, for example, thus increasing the kiln's operating rate, the efficiency of the cement to reduce a little bit is also not bad.
While the grinding station is different, due to the distance from the clinker base is farther, increasing a piece of transportation costs, clinker use of higher costs, should be a certain amount of power consumption in exchange for a bit of clinker mixed with a reduction in the amount of clinker. Of course, this is all a matter of degree.
Precautions for cement production
Crushing cement production process, most of the raw materials to be crushed, such as limestone, clay, iron ore and coal. Limestone is the largest amount of raw materials used in the production of cement, after mining the particle size is larger, higher hardness, so limestone is the largest amount of raw materials used in the production of cement, after mining the particle size is larger, higher hardness, so the crushing of limestone occupies a more important position in the crushing of materials in the cement plant.
The crushing process is more economical and convenient than the grinding process, the reasonable choice of crushing equipment and grinding equipment is very important. In the material into the grinding equipment, as far as possible before the large pieces of material crushed to fine, uniform particle size, in order to reduce the load of grinding equipment, improve the output of the machine. After the material is crushed, it can reduce the separation phenomenon of different particle size materials in the transportation and storage process, which is helpful for making raw materials with uniform composition and improving the accuracy of batching.