Dry Process Cement Production Line

ZK CORP provides cement production line engineering design, civil construction, complete sets of equipment, installation and commissioning, technical services and general contracting projects.
1. Broken and pre-homogenized
(1) Broken cement production process, most of the raw materials need to be broken, such as limestone, clay, iron ore and coal. Limestone is the largest raw material for the production of cement, the larger the particle size after mining, the higher the hardness, so the crushing of limestone in the cement plant material, crushing occupies more important position.
(2) Pre-homogenization of raw materials Pre-homogenization technology is in the process of raw materials, take the process, the usage of scientific heap reclaiming technology to achieve the initial homogenization of raw materials, so that the raw material yard has the storage and homogenization function at the same time.
2. Raw material preparation
Cement production process, each production of 1 ton of Portland cement at least need 3 tons of material (including a variety of raw materials, fuel, clinker, mixture, gypsum), according to statistics, dry cement production line grinding operations need to consume power of about 60% of the total plant power, which accounted for more than 30% of raw material grinding, coal mill accounted for about 3%, cement grinding about 40%. Therefore, a reasonable choice of grinding equipment and process, optimize the process parameters, correct operation, and control operation system, to ensure product quality, reduce energy consumption is of great significance.
3. Raw material are homogeneous
New dry process of cement production process, stable into the pit raw material composition is stable clinker firing thermal system of the premise, raw material homogenization system plays a stable into the cellar raw material composition of the last one checks.
4. Preheat decomposition
The preheating and partial decomposition of the raw material is completed by the preheater, instead of the rotary kiln part of the function, to shorten the length of the kiln, while the kiln to the accumulation of gas heat transfer process, moved to the preheater inside the suspended state. The raw material can be mixed with the hot gas discharged from the kiln to increase the contact area of the gas, the heat transfer speed is high, the heat exchange efficiency is high, and the production efficiency of the kiln system is improved and the heat consumption of the clinker is reduced purpose.
5. The burning of cement clinker
Raw material is completed the preheating and pre-decomposition in the cyclone preheater, the next process is to enter the rotary kiln for clinker firing.
The carbonate is further rapidly decomposed in the rotary kiln and undergoes a series of solid-phase reactions to produce minerals such as cement clinker. As the material temperature rises near, the minerals will become liquid, dissolved in the liquid phase and react to produce large amounts (clinker). After the clinker is fired, the temperature begins to decrease. Finally, the cement clinker cooler cools the high temperature clinker discharged from the rotary kiln to the downstream conveying, storage and cement mill, and recovers the sensible heat of the high temperature clinker to improve the thermal efficiency and clinker quality of the system.
6. Cement grinding
Cement grinding is the final process of cement manufacturing, but also the most power consumption of the process. Its main function is to cement clinker (and gelling agent, performance adjustment materials, etc.) grinding to the appropriate size (in terms of fineness, specific surface area, etc.) to form a certain grain gradation, increase its hydration area, Accelerate the hydration speed, meet the cement slurry coagulation, hardening requirements.
7. Cement packaging