The process of cement making
Cement clinker is an indispensable building material in the major construction industry, cement clinker with limestone and clay, iron raw materials as the main raw material, after physical processing of calcined and then crushed products, in the construction industry, there will also be many construction cement tailings, these tailings after crushing equipment reprocessing can still be realized after its reuse value. So what is the process of making cement?
1. Crushing and pre-homogenization: crushing of raw materials for cement production, such as limestone, clay, iron ore and coal, etc., and the use of science and technology in the raw material storage and retrieval process to make the raw materials initially homogenized.
2. Raw material preparation: Reasonable selection of grinding equipment and process flow, optimize process parameters, correct operation, control of the operating system, to ensure product quality, reduce energy consumption is of great significance.
3. Raw material homogenization: in the process of new dry-process cement production, stabilizing the composition of raw material in the cellar is the prerequisite for stabilizing the thermal system of clinker burning, and the raw material homogenization system plays a role as a gatekeeper for stabilizing the composition of raw material in the cellar.
4. Preheating decomposition: mainly including material dispersion, gas-solid separation, pre-decomposition and other steps.
5. Firing of cement clinker: further rapid decomposition of carbonate in the rotary kiln and a series of solid-phase reactions to generate cement clinker in the mineral.
6. Cement grinding: It is the process of cement production and also the process with high power consumption. Its main function is to grind cement clinker to the appropriate particle size, to form a certain particle gradation, increase its hydration area, accelerate the hydration rate, to meet the cement paste coagulation, hardening requirements.
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