| 1. Crushing and Pre-homogenization. | | | | production. According to figures, the traditional |
| (1) Crushing. During producing Concrete, most of | | | | type dry process cement of clinker consumes |
| the raw materials must be first crushed before | | | | more than 60% energy of the whole factory. So |
| being used to make concrete. Among these raw | | | | the choice of grinding machines is very important. |
| materials which include lime stone, clay, iron ore | | | | 3. Raw material Homogenization. |
| and coal, etc. the lime stone is of the greatest | | | | In the process of new dry concrete production, |
| usage to make concrete. With comparatively | | | | the stability of pit entry clinker raw material |
| larger particles and higher hardness, crushing the | | | | component is the premise of the whole system. |
| lime stone to required fineness after mining is of | | | | Raw material homogenization system plays very |
| relatively important consequence among crushing | | | | important role in the stability of pit entry clinker |
| all those raw materials. There are many crushers | | | | raw material component. |
| used in crushing these raw materials, such as jaw | | | | 4. pre-heater and calciner |
| crusher, impact crusher, cone crusher and vertical | | | | � |
| shaft impact crusher, etc. According to the raw | | | | 5. The burning of concrete clinker. |
| materials' different particles and hardness, there | | | | 6. Grinding |
| are several suitable crushers which can be used in | | | | Grinding is the last process of cement produce |
| the crushing. | | | | and also is the most current consuming working |
| (2) Pre-homogenization of raw materials. | | | | procedure. Cement clinker get grinded into the |
| 2. raw material preparation | | | | right size. The smaller the particle size is, the |
| It takes at least 3 ton materials (including raw | | | | better the final cement is.It's important to choose |
| stuff, fuel, clinker, compound and gypsum) to | | | | suitable grinding machine. |
| produce 1 ton Portland cement during the | | | | 7. Concrete Packaging. |