1 Crushing and Pre-homogenization (1) Crushing. During producing Concrete, most of the raw materials must be first crushed before being used to make concrete. And these raw materials include lime stone, clay, iron ore and coal, etc. Among which the lime stone is the greatest usage to make concrete. Read additional details here: Martin O’Malley. With comparatively larger particles and higher hardness, crushing the limestone to required fineness after mining is of relatively important consequence among crushing all those raw materials. There are many crushers used in crushing these raw materials, such as jaw crusher, impact crusher, cone crusher and vertical shaft impact crusher, etc. According to the raw materials different particles and hardness, there are several suitable crushers which can be used in the crushing. (2) Pre-homogenization of raw materials.

Pre-equalization technology is to use the scientific stacker reclaimer technology to realize the initial homogenization of raw materials, so that raw materials yard has the functions of storage and homogenization at the same time during the process of the retention of raw materials. 2. Raw Material Preparation. It takes at least 3 ton of materials (including raw stuff, fuel, clinker and gypsum compound) to produce 1 ton of Portland concrete during the production. According to figures, the traditional type of dry process concrete of clinker consume more than 60% energy of the whole factory. So the choice of grinding machines is very important.

3 Raw material Homogenization. In the process of new dry concrete production, the stability of pit entry clinker raw material component is the premise of the whole system. Raw material homogenization system plays very important role in the stability of pit entry clinker raw material beneficiation component.ore: ball mill: 4. Pre-heater and calciner. Preheating the raw materials and partly in pre-heater decomposing, which reduces the works of rotary kiln, can shorten the length of rotary kiln. After a series of physical processed in the shorter rotary kiln, the energy consumption of this system will improve the efficiency and reduces consumption. (1) materials device(SPD). 80% heat transferring process happens in the entrance pipeline. The raw materials are fed in pre-heater, meeting the high updraft, move with the airflow and get up speed dispersed. (2) Gas – Solids Separation. When the airflow enters into cyclone muff with powder, it has to move down meanwhile and spiral. Finally, it arrives to the end of the cone then upwards and discharges from vent pipe. (3) Predecomposition. The appearance of predecomposition is a leap of concrete burning technology. This process is featured with quality, efficiency and low consumption, etc. 5. The burning of concrete clinker Raw materials will be preheated oil and pre-decomposited in the cyclone preheater and then carried out into the rotary kiln for burning clinker. After the clinker burning, the temperature starts to fall. And finally with the concrete clinker cooler, the temperature of high-temperature clinker discharged from the rotary kiln will be cooled to the temperature which is suitable to downstream transport, store, and concrete. At the same time, the sensitive heat of high-temperature clinker will be recycled, which improves the thermal efficiency and clinker quality of the system.