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5000T/D new dry process cement production line process equipment
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5000T/D new dry process cement production line process equipment
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5000T/D new dry process cement production line process equipment
| Workshop name |
Name of main motor |
Type, specification, performance |
| limestone crushing |
hammer crusher |
Model: TKLPC2022, feed size <1100mm, discharge size <75mm; Output: 700 t/h |
| broken siltstone |
Jaw crusher |
Model PE-900 × 1200, feed size <750mm, discharge size <150mm; Output: 200 t/h |
| cone crusher |
Model PYS-1215, feed size <150mm, discharge size <30mm; Capacity: 200 t/h |
|
| limestone homogenization field |
hanging wall type stacker |
Stacking capacity: 1400 t/h |
| Material reclaimability: 500 t/h |
||
| siltstone homogenization field |
mobile stacker |
Stacking capacity: 200 t/h |
| Chain plate reclaimer |
Tapping capacity: 110-130 t/h |
|
| raw coal homogenization field |
Mobile trolley stacker |
Stacking capacity: 200 t/h |
| reclaimer |
Material reclaim capacity: 100 t/h |
|
| Raw material grinding and waste gas treatment |
vertical mill |
Model MLS4531, output 360 -- 400 t/h; Feeding humidity <6%, emission humidity <0.5; Feed size <100mm, discharge size: R80μm<12% |
| Fan |
Air volume: 860000m3/h, total pressure: 9500Pa |
|
| Kiln end high temperature fan |
Air volume: 860000m3/h, total pressure: 7500Pa |
|
| high concentration electrostatic precipitator |
Model BS930, processing area: ~ 310m2; Treated air volume: 820000m3/h； Outlet dust concentration (standard) ≤ 50 mg/m3 |
|
| Pulverized coal equipment |
vertical mill |
Model MPF2116, output: 38~45 t/h; Water content <12%, discharge moisture <1%; Feed size:<25mm, discharge size: R80μm<12% |
| clinker firing system |
rotary kiln |
Model φ Φ4.8 × 74m, inclination: 4%, number of supporting seats: 3rd gear; Revolutions: 0.6~4.0r/min, Power: 630kW; Output: 5000t/d |
| Preheater and Decomposition Furnace |
Five-stage double-series preheater decomposer Humidifying tower: Φ7.2x30.0m, output: 5000t/d |
|
| Grate cooler |
LBT36352, grate bed area: 119.6 m2; Feeding temperature: 1400 ℃, unloading temperature: 65 ℃, ambient temperature |
|
| Kiln head electrostatic precipitator |
Treatment air volume: 550000m3/h, treatment area: 196 m2; Inlet dust concentration: ≤ 30 g/m3; Outlet dust concentration: ≤ 50mg/Nm3 |
|
In the process of cement production line, 3 tons of materials (including various raw materials, fuel, clinker, mixture and gypsum) need to be ground for every ton of Portland cement produced. According to statistics, the power consumed by dry cement production line for grinding accounts for more than 60% of the power of the whole plant, of which raw material grinding accounts for more than 30%, coal grinding accounts for about 3% and cement grinding accounts for about 40%. Therefore, reasonable selection of grinding equipment and process, optimization of process parameters, correct operation, control of the operating system, to ensure product quality, reduce energy consumption is of great significance. |
| The main equipment of cement production line includes: cement rotary kiln, cyclone preheater, cooler, crusher, vertical mill, roller press, cement mill, coal mill, dryer, dust collector, packaging machine, bulk machine, conveyor, electrical control, etc. |
| pre-homogenization (1) Crushing: In the cement production process, most of the raw materials are crushed, such as limestone, clay, iron ore and coal. Limestone is the largest amount of raw materials for the production of cement, after mining, the particle size is larger, the hardness is higher, so the crushing of limestone in the cement plant material crushing occupies an important position. (2) Pre-homogenization of raw materials: Pre-homogenization technology is to use scientific stacking and reclaim technology to realize the preliminary homogenization of raw materials during the storage and retrieval of raw materials, so that the raw material yard has the functions of storage and homogenization at the same time. In the new dry process cement production process, stabilizing the raw material composition is the prerequisite for stabilizing the clinker firing, and the raw material homogenization system plays a role in stabilizing the raw material composition into the kiln. Preheating and decomposition use preheater to complete the preheating and decomposition of cement raw material, replace part of the functions of rotary kiln, shorten the length of rotary kiln, and realize the heat exchange process of gas and material in the rotary kiln under the condition of suspension preheating. Raw material is fully mixed with the hot gas discharged from the rotary kiln, which increases the contact area of gas and material, has fast heat transfer speed and high heat exchange efficiency, improves the production efficiency of rotary kiln system and reduces the heat consumption of clinker. (3) pre decomposition. The emergence of pre-decomposition technology is a technological leap in the cement calcination process. It is to add a decomposing furnace between the preheater and the rotary kiln, use the kiln tail to rise the flue and set up a fuel injection device, so that the exothermic process of fuel combustion and the endothermic process of carbonate decomposition of raw material are carried out rapidly in the decomposing furnace in a suspended state or a fluidized state, so that the decomposition rate of raw material entering the kiln is increased to more than 90%. The carbonate decomposition task originally carried out in the rotary kiln is moved to the decomposing furnace. Most of the fuel is added from the decomposing furnace and a small part is added from the kiln head, which reduces the heat load of the calcination zone in the kiln, prolongs the service life of the lining material and is conducive to large-scale production. Due to the uniform mixing of fuel and raw meal, the combustion heat of fuel is timely transferred to the material, thus optimizing the combustion, heat exchange and carbonate decomposition process. Therefore, it has a series of excellent performance and characteristics such as high quality, high efficiency and low consumption. After the raw material is preheated and pre-decomposed in the cyclone preheater, the next process is to enter the rotary kiln for clinker firing. In the rotary kiln, carbonate is further decomposed rapidly and a series of solid-phase reactions occur to generate minerals such as cement clinker. As the temperature of the material increases, the minerals will become liquid phase, and the temperature will begin to decrease after the clinker is burned. Finally, the cement clinker cooler cools the high-temperature clinker discharged from the rotary kiln to the temperature that the downstream transportation, storage and cement mill can withstand, and at the same time recovers the sensible heat of the high-temperature clinker to improve the thermal efficiency and clinker quality of the system. (4) cement grinding. Cement grinding is the final process of cement manufacturing and the most power consuming process. Its main function is to grind cement clinker to a suitable particle size, form a certain particle gradation, increase its hydration area, accelerate the hydration rate, and meet the requirements of cement paste setting and hardening. (5) Cement packaging Cement factory has bagged and bulk two shipping methods. National standards require that the proportion of bulk cement must reach more than 70%, and the development of bulk cement is a major trend in China. |
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3000T/D cement production line process equipment
Contact Information
Address: No.22, Section 3, Huanghe Road, Shuangta District, Chaoyang City, Liaoning Province
Telephone:+86 13904217870
WhatsApp:+86 13904217870
Fax: +86-421-3398828
Mailbox:wgl@cylxzx.com
Zip Code: 122000