Product Description
Description of rotary kiln for environmental protection:
Rotary kilns belong to building materials and equipment, and can be divided into cement kilns, metallurgical and chemical kilns, and lime kilns according to different materials. Cement kilns are used to prepare cement clinker, and there are two preparation methods: dry method and wet method. Metallurgical chemical kilns are widely used in the magnetic roasting of poor iron ore in steel plants and the oxidation roasting of chromium and nickel; High alumina ore from the backing refractory material factory; Roasting clinker and alumina in aluminum plants, and roasting chromium ore and chromium powder in chemical plants. Lime kilns are used for the calcination of active lime in steel plants and ferroalloy plants, as well as for the light calcination of dolomite.
Rotary kiln refers to a rotary calcination kiln, which can be divided into cement kiln, metallurgical and chemical kiln, and lime kiln according to different materials. Cement kilns are mainly used for calcining cement clinker and can be divided into dry process cement kilns and wet process cement kilns.
.The Large-scale cement rotary kiln is one of the rotary kilns. As the name suggests, it is a kind of rotary kiln that specializes in the treatment of cement. The cement rotary kiln is designed mainly for paving dry and wet production lines of cement clinker. Cement rotary kiln can also be used in other fields, such as metallurgy, chemical, building refractory, environmental protection and other industries. The rotary kiln is composed of a shell, a supporting device, a thrust roller supporting device, a transmission device, an active kiln head, a kiln tail sealing device, a coal injection pipe device and so on.
Rotary kiln is the main equipment for calcining cement clinker,active lime, and dolomite.In the ferrous and ferrous metallurgical industry,rotary kiln is used for calcining iron,aluminum,copper,zinc,tin,nickel,tungsten,chromium,other metals,and roasting ore,concentrate,intermediate sintering.
Rotary Kiln belongs to building material equipment, according to different materials, which can be divided into cement kiln, metallurgy chemical kiln and lime kiln. Cement kiln is used for making cement clinker and there are dry and wet methods to make cement clinker. Metallurgy chemical kiln is widely used for magnetic roasting of poor iron ore and oxidizing roasting of chrome and nickel in the steel factory; backing high-alumina mine in the refractory material factory; baking chamotte and alumina in the aluminum factory and baking chrome ore and chrome powder in the chemical plant. The Lime Kiln is used for roasting active lime in steel works and ferroalloy plants and light roasting dolomite.
Product Application
Application and Operating principle:
The rotary kiln is the core equipment of the cement clinker system in the new large-scale dry process cement production, which can be used in conjunction with the unit, dual flow preheater, and calcination burner. 90% -95% of the pre calcined raw materials enter the slow rotating and inclined installation rotary kiln from behind. Under the combined action of circumferential tilting and axial movement, the material slowly flows through the entire drum, and fuel (coal dust, oil, or natural gas) is sprayed into the high-temperature zone from the kiln head for combustion, generating the heat required for the physical and chemical reactions of the material in the kiln to combine and crystallize. Under the action of the rear blower, the combustion airflow and material flow are reversed throughout the kiln, completing heat exchange and physical and chemical reactions. The clinker cement is discharged into the cooler.
Applicable materials:
Cement, metal ore, limestone, cement clinker, bauxite, activated lime, aluminum hydroxide, chrome ore, etc.
Scope of application: Rotary kilns are widely used in various production industries such as building materials, metallurgy, refractory materials, chemical industry, and environmental protection.
characteristics
Characteristics of rotary kiln for environmental protection:
1. Rotary kiln is a kind of pyroprocessing device mainly used to sinter cement clinker. Both dry process and wet process are applicable.
2. It is widely used in metallurgy industry, chemical industry, cement industry, building industry, etc.
3. As a professional rotary kiln manufacturer in China, we adopt advanced contact type graphite block sealing device and hydraulic catch wheel device to ensure the stable running of kiln.
4. Through precision measuring and infra-red scanning, the whole sintering process can be monitored.
5. Our rotary kiln has the features of reliable performance, easy operation, low energy consumption, and high productivity, etc.
6. Compared to the output and energy consumption of other equipment of the same specification, the output of our rotary kiln has increased by 6-10% and energy consumption has reduced by 16%.
* The kiln body has simple structure and smooth air flow.
* Evenly heated, stable product quality
* High output, suitable for large active lime production line
* The sulfur content of the product is low, which meets the requirements of steel-making.
Working principle
Working Principle of rotary kiln for environmental protection:
The working principle of the rotary kiln produced by Henan Hongke Heavy Industry Machinery Co., Ltd. Is
Wet material is transported to the hopper through a belt conveyor or bucket elevator, and then sequentially enters the feeding end through the hopper feeder and feeding pipe. The inclination of the feed pipe must be greater than the natural inclination of the material in order for the material to flow smoothly into the dryer. The dryer drum is slightly inclined towards the horizontal line. The material enters from the top and the heat carrier enters from the bottom; The two come into contact with each other from opposite directions, but there is also a situation where the heat carrier and material flow into the main body of the dryer together.
A rotary kiln is a cylindrical container that tilts slightly horizontally and slowly rotates around its axis. The material to be processed is fed into the upper end of the drum. As the kiln rotates, the material gradually moves towards the lower end and may undergo a certain amount of stirring and mixing. Hot air flows along the kiln, sometimes in the same direction as the process material (parallel flow), but usually in the opposite direction (counter flow). Hot gas can be generated in an external furnace or by flames inside the kiln. This type of flame is projected from the combustion tube (or "combustion tube"), and its function is like a large endogenous burner. The fuel used for this purpose can be gas, oil, powdered petroleum coke, or powdered coal.
Technical Data
Technical parameters of active lime rotary kiln:
| Specification |
Capacity(t/d) |
Incline of body(°) |
Speed(r/min) |
Main motor(kw) |
Remarks |
| Φ2.5*60 |
168 |
3.5 |
0.516-1.549 |
75 |
Alumyte-alumina forge kiln |
| Φ3*48 |
700 |
3.5 |
0.726-3.63 |
110 |
Kiln with 5-stage cyclone precalciner |
| Φ3*60 |
|
3.5 |
0.492-1.476 |
75 |
Alumyte-alumina forge kiln |
| Φ3*100.94 |
450 |
4 |
0.3-1.503 |
90 |
Multiple-drum cooling |
| Φ3.2*46 |
1000 |
3.5 |
0.36-3.57 |
160 |
kiln with preheater precalcine |
| Φ3.2*52 |
1200 |
3.5 |
0.343-0.34 |
125 |
kiln with preheater |
| Φ3.3*50 |
1300 |
3.5 |
0.676-3.38 |
160 |
kiln with plateau suspension preheater |
| Φ3.3*52 |
1300 |
3.5 |
0.266-2.66 |
125 |
kiln with preheater precalcine |
| Φ3.5*54 |
1500 |
3.5 |
0.55-3.4 |
220 |
kiln with preheater precalcine |
| Φ3.6*70 |
1800 |
3.5 |
0.25-1.25 |
125 |
Generating kiln for using ofterheat |
| Φ4*60 |
2500 |
3.5 |
0.396-3.96 |
315 |
kiln with preheater precalcine |
| Φ4.15*58 |
|
5 |
0.35-0.7 |
110 |
Zinc leaching(calcine rotary kiln) |
| Φ4.2*60 |
3000 |
4 |
0.4-3.98 |
375 |
|
| Φ4.3*60 |
3500 |
3.5 |
0.396-3.96 |
375 |
kiln with preheater precalcine |
| Φ4.5*66 |
4000 |
3.5 |
0.41-4.1 |
560 |
kiln with preheater precalcine |
| Φ4.8*74 |
5000 |
4 |
0.396-3.96 |
630 |
kiln with preheater precalcine |
| Φ5.0*74 |
6000 |
4 |
0.35-4 |
710 |
kiln with preheater precalcine |
| Φ5.6*87 |
8000 |
4 |
Max4.23 |
800 |
kiln with preheater precalcine |
| Φ6.0*95 |
10000 |
4 |
Max5 |
950*2 |
kiln with preheater precalcine |
FAQ
FAQ:
1. What is the raw material do you want to process?
2. What is the capacity per hour do you need?
3. What is the raw material input size?
4. What is the output size of your product?
Our engineers will suggest you the most suitable one for you according to your information.
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Henan Hongke Heavy Machinery Co.,ltd
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