Automatic Cement Rotary Kiln For Calcination Production Line
Cement is essential materials for construction buiding, it is made from stones which mainly is limestone, coal.
Henan Zhongke Engineering & Technology Co., Ltd. is specialized in large and medium-sized series of mining machinery, metallurgical machinery, building materials equipments, cement equipment and rotary kiln. R&D, production and marketing into a joint-stock enterprise, our company is headquartered in Zhengzhou Country’s High-tech Industrial Development Zone, which consists of three branches, a research and development department.
Over a billion tonnes of cement are made per year, and cement kilns are the heart of this production process: their capacity usually defines the capacity of the cement plant. As the main energy-consuming and greenhouse-gas–emitting stage of cement manufacture, improvement of kiln efficiency has been the central concern of cement manufacturing technology.
Technical parameter:
| Specification(m) | φ2.8/2.5×44 | φ3×48 | φ3.2×50 | φ3.3×50 | φ3.5×54 |
| Capacity(t/d) | 300 | 600-700 | 1000 | 1200 | 1500-1800 |
| Slope of the kiln shell (%) | 3.5 | 3.5 | 3.5 | 4 | 4 |
| No.of supporters | 3 | 3 | 3 | 3 | 3 |
| Type of thrust roller | Mechanical | Mechanicalor Hydraulic | Hydraulic | Hydraulic | Hydraulic |
| Rotary speed of kiln | Main driving (r/min) | 0.445-2.22 | 0.676-3.38 | 0.36-3.57 | 0.36-3.57 | 0.39-3.9 |
| Auxiliary driving (r/min) | 4.75 | 9.36 | 6.5 | 5.61 | 7.66 |
| Main driving | Motor | Type | ZSN4-225-21 | Z2-101 | ZSN4-280-191B | ZSN4-280-191B | ZSN4-315-092 |
| Rated power(kw) | 55 | 100 | 160 | 160 | 220 |
| Seed regulation Range(r/min) | 1000 | 1500 | 1500 | 1500 | 1000 |
| Rated voltage(V) | 440 | 220 | 440 | 440 | 440 |
| Reducer | Type | ZS145-1-1 | ZS145-1-1 | ZSY-450-40-V | ZSY450-40 | NZS995-28VIBL |
| Total speed ratio | 49-63 | 50 | 40 | 40 | 28 |
In cement plant, to produce cement need seven steps.
1. Crushing and Preblending
In cement plant, most of the material need to be broken, such as limestone, clay, iron ore and coal, etc. Limestone is the largest amount of raw material in cement production, after mining the size of limestone is large, with high hardness, so the limestone crushing plays a more important role in cement plant.
2. raw material preparation
In cement plant, producing each 1 ton of Portland cement need grinding at least 3 tons of materials (including raw materials, fuel, clinker, mixed materials, gypsum). Grinding operation consumes power about 60% of total power in cement plants, raw material grinding takes more than 30%, while coal mill used in cement palnt consumes 3%, cement grinding about 40%. So choosing the right grinding mills in cement plant is very important.
3. raw materials homogenization
Adopting the technology of homogenization could rationally get the best homo-effect and afford an eligible production to the demand
4. preheating and precalcing
Preheater and calciner is key equipment for precalcing production technique.
5.burning cement clinker in a rotary kiln.
The calcination of Rotary Kiln is a key step of cement production , it makes directly influence on the quality of cement clinker.
6. cement grinding
Cement grinding is used for grinding cement clinker (and gelling agent, performance tuning materials, etc.) to the appropriate size (in fineness, specific surface area, said), optimizing cement grain grading, increasing the hydration area, accelerating the hydration rate to meet the requirements of cement paste setting, hardening.
7. cement packing
Cement Plant equipments
In the cement manufacturing plant, not only the crushing machinery, but also the grinding machine is used as cement producing equipment.
Stone Crusher: Limestone crusher Limestone is the main raw materials for making cement, so we need the limestone crusher to crush limestone to small particle sizes to make cement.
Raw mill: it is used to crush limestone particles and additive materials
Coal crusher and coal mill: They are used for crushing and grinding coal into powder in cement plant.
Gypsum crusher and mill: In cement plant, they are used for crushing and grinding gypsum into powder.
Cement mill: Ball Mill: They are used to grind cement clinker into powder to make cement.
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Rotary Cement Production Line Images
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