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Mainly technological process of 1500t/d cement production line
Description: Cement production line is the production line construction project composed by a series of corollary equipments which are used for product cement.It is mainly composed by crushing equipment、homogenize equipment、raw material preparation equipment、drying equipment、preheat and predecomposition equipment、the clinker sintering equipment、cooling equipment、grinding equipment、packaging equipment、conveying equipment、environmental production dust collection equipment etc.The jiangsu pengfei group supply process design、civil construction、complete equipment、installation and trial run、technical services、the general contracting.The representative projects of cement complete equipments are: 6000t/d cement production line construction、5000t/d cement production line construction、3000t/d cement production line construction、2500t/d cement production line construction、1500t/d cement production line construction、600-1000t/d cement production line construction.
Tel: +86-13862700215
Description Parameters Method Equipment Technological Technical
Cement production line is the production line construction project composed by a series of corollary equipments which are used for product cement.It is mainly composed by crushing equipment、homogenize equipment、raw material preparation equipment、drying equipment、preheat and predecomposition equipment、the clinker sintering equipment、cooling equipment、grinding equipment、packaging equipment、conveying equipment、environmental production dust collection equipment etc.The jiangsu pengfei group supply process design、civil construction、complete equipment、installation and trial run、technical services、the general contracting.The representative projects of cement complete equipments are: 6000t/d cement production line construction、5000t/d cement production line construction、3000t/d cement production line construction、2500t/d cement production line construction、1500t/d cement production line construction、600-1000t/d cement production line construction.
Parameters
During the process of cement production,it needs grinding three tons materials for product one tone portland cement (including all kinds of raw materials、fuels、clinkers、compound material、gypsum).According to the statistics,the cement dry process production line grinding operation needs to consume 60% power of the the whole plant, among it the raw material grinding occupy above 30%,the coal grinding occupy about 3%,the cement grinding occupy about 40%.Therefore, we should reasonable select grinding equipment and technological process,optimize technological parameters,proper operation,control work system. And this will have great significance on ensuring production quality and reduce energy consumption.
Method
The main materials of cement production are limestone and clay,they turn into raw materials through crush、burdening、grinding by vertical mill,then turn into clinker by feeding into the cement rotary kiln, and then put in appropriate gypsum 、 some mixed materials or admixture, then turn into cement through roller press and cement mill. At last transport out of the plant after packaging by package equipment or bulk cement loaded.For different raw material preparation method,the production line can be divided into dry process and wet process.
Cement dry process cement production technological process: is the approach to dry raw material and grinding or dry raw material powder feed into the dry process rotary kiln.There is also an approach named semi- dry method,which needs put in appropriate water into the raw material powder to make into the raw material ball,and then feed in into the Lepol kiln,it is also belongs to one of the dry process.
The main advantages of dry process is low heat consumption,the heat consumption of dry process kiln with preheater is 3140-3768J/KG. The weakness is raw material ingredient not well-distributed, the workshop huge dust and high powder consumption.
Cement wet process cement production technological process: is the way to grinding the raw material and water into raw material thick liquid and then feed into the wet process rotary kiln. There is also an approach to dry the raw material thick liquid into the raw material chunk,then feed into the kiln,which named semi-wet process,also belongs to wet process.
The advantage of wet process is easy operation,easy control of raw material ingredient,high quantity of production,convenient convey of thick liquid,little dust of workshop etc. The weakness is huge heat consumption,usually the clinker heat consumption is 5234-6490J/KG.
Equipment
The main equipment of cement production line including: rotary kiln、cyclone preheater、cooling machine、Crusher, vertical mill, roller press, cement mill, coal mill, dryer, dust collector, packaging machines, bulk machines, conveyors, electrical control etc.
Technological
Pre-homogenization:Crushing: during the process of cement production,most of the raw materials need to be crushed,such as lime stone、clay、iron ore、coal etc. Limestone is the largest amount raw material for cement production,the particle size is bigger and the hardness is higher, so the limestone crushing have an important position at the material crushing of cement plant.
Raw material pre-homogenization: the pre-homogenization technology is achieving the raw material initial homogenize by scientific stacker and reclaimer technology during the storage and reclaimer process of raw materials, to ensure the raw material ground has the capability of storage and homogenize.
raw materials homogenize:At the process of dry process cement production,stabilize the raw material ingredient is the premise of clinker sintering, raw material homogenize system is used for stabilize the raw material ingredient inlet the kiln.
preheat and decomposition:We use the preheater to finish the preheat and decomposition of cement raw materials, replace part of the capabilities of rotary kiln and reduce the length of rotary kiln. The materials finished gas exchanging heat process inside the rotary kiln under the state of suspend and preheat. The raw materials and fervor gas exhausted from rotary kiln were intensive mixing, enlarge the contact area of gas, heat transfer speed higher,heat exchange rate higher,production rate of rotary kiln higher,heat consumption of clinker sintering lower.
the material dispersion:80% of the raw materials feed into the preheater pipe will exchange heat at the entrance of the pipe. At the impact of the high speed updraft, materials turn up with air flow, meanwhile dispersed.
the right of gas-solid separation:When the airflow with material powder get into cyclone, and were forced to do rotate flowing at the annulus space between cyclone barrel and inside barrel while doing downward movement
the precalcining:Appears of precalciner technology is a technological leap of cement calcination process. It is added between the preheater and calciner kiln using kiln tail rise flue, set the fuel injected device, so that the process of carbonate endothermic exothermic decomposition of the fuel combustion process and raw materials, in the decomposition furnace to the suspended or fluidized state quickly, so that the decomposition rate of kiln feed is increased to 90%. The original task decomposition of carbonate in the rotary kiln, and moved to the decomposition furnace; fuel from the calciner to join the majority, joined by a small part of the kiln, reducing the heat load of the kiln firing zone, extending the liner material life, in favor of large-scale production; due to the mixing of fuel and raw materials, timely delivery of fuel combustion heat to the material, combustion, heat transfer and carbonate decomposition process can be optimized. So it has a series of excellent performance and features of high-quality, high efficiency, low power consumption.
sintering:After completion of the raw material in the cyclone preheater preheater and precalciner, the next process is carried out into the clinker kiln firing. The carbonate rapidly resolved and occur a series of solid-phase reaction in rotary kiln to bring the mineral into being.As the material temperature close, the liquid will become minerals dissolved in the liquid phase reaction and generates a large number (clinker). After the clinker burning, the temperature began to decrease. Finally, the cement clinker cooler unloading the kiln clinker cooler temperatures to the downstream transport, storage libraries and cement mill can withstand temperatures of hot clinker while recovering sensible heat, improving system thermal efficiency and clinker quality.
Technical
序号 项目名称 设备名称、规格及技术性能 生产能力
(t/h.台)
台数 年利用率(%) 备注
1 石灰石
破  碎
重型板式给料机
规    格:B1250×11500mm
给料粒度:800mm
功    率:30kW
200~350 1 25.51  
单段锤式破碎机
型    号:TKPC16.18
给料粒度:800mm
出料粒度:≤25mm
功    率:355kW
250 1 25.51
2 石灰石预均化 混合堆取料机
轨距:  24m
总装机容量: 142kW
堆料机
堆料方式: 连续合成式
堆料层数: >400层
取料机
取料形式: 全断面取料
堆料能力:
600t/h
取料能力: 
250t/h
1    
3 生料粉磨 立磨
规    格:HRM2800mm
入磨粒度:≤40mm
成品细度:0.080mm方孔筛筛余12%
入磨水分:≤6%
出磨水分:≤0.5%
电机功率:1250 kW
130 1 60.90  
4 窑、磨废气处理 增湿塔
规    格:Φ7.5×26m
处理风量: 400000m3/h
进口风温: 340℃
出口风温: 150-220℃
  1 82.19  
高温风机
流    量: 400000m3/h
全    压: 7500Pa
使用温度:340℃(瞬时450℃)
转    速: 1450r/min
电机功率: 1250kW
  1 82.19  
2350DIBB24高温风机
处理风量:300000m3/h 7500 Pa
c.BS930型电收尘器:
处理烟气量:400000m3/h
入口粉尘浓度: ≤80g/Nm2
出口粉尘浓度: ≤50mg
  1 82.19  
窑尾废气风机
流    量: 420000m3/h
全    压: 1500Pa
使用温度:150℃
电机功率:355kW
  1 82.19  
5 烧成窑尾 五级旋风预热器及分解炉系统
Five-stage cyclone preheater and calciner system
 C1:2-Φ4300mm
 C2:1-Φ5600mm
 C3:1-Φ5600mm
 C4:1-Φ5900mm
 C5:1-Φ5900mm
 分解炉:Φ6300mm
62.50 1 82.19  
6 窑  中 回转窑
规    格:Φ3.5×54m
斜    度: 4%
转    速: 0.4~3.96r/min
电机功率: 220kW(直流调速)
62.50 1 82.19  
7 窑头熟料冷却 空气梁篦冷机
型    号:LBTF1700
62.50 1 82.19  
8 水泥粉磨 管磨机
规    格:Φ3.5×13m
 成品细度: 320m2/kg
主电机功率: 2000kW
50 2 58.59  
选粉机
型    号:O-Sepa1500
风    量:1500m3/min
 
  2 58.59
9 水泥包装 八嘴回转式包装机
计量精度:±0.25kg/包
90 2 34.18  

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