Rotary Kiln refers to a rotary calcining kiln (commonly known as a rotary kiln), which is similar in shape to a rotary bed and is mainly used for calcining ceme
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Technical Training (Free training of qualified operators for users)Rotary Kiln refers to a rotary calcining kiln (commonly known as a rotary kiln), which is similar in shape to a rotary bed and is mainly used for calcining cement clinker. Rotary kiln can be divided into cement kiln, metallurgical chemical kiln and lime kiln according to different materials. Widely used in cement, silicate products, new building materials, refractory materials, glass ceramics and other production industries.
The rotary kiln (rotary kiln) is a cylindrical object with a certain slope, the slope is 3-3.5%, and the material is stirred in the rotary kiln (rotary kiln) by means of the rotation of the kiln, so that the materials are mixed and contacted with each other. reaction. The coal injection combustion at the kiln head generates a lot of heat, and the heat is transferred to the material by the radiation of the flame, the convection of the hot gas, and the conduction of the kiln brick (kiln skin). The material moves forward in the kiln depending on the inclination of the kiln cylinder and the rotation of the kiln.
Rotary kilns are divided into variable diameter rotary kilns and full diameter rotary kilns according to their appearance, and can be divided into cement rotary kilns, ceramsite sand rotary kilns, kaolin rotary kilns, lime rotary kilns, etc. For gas-fired rotary kiln, coal-fired rotary kiln, mixed fuel rotary kiln.
Rotary kiln with varying diameters front and rear. Generally, the diameter changes before and after about 30cm. Compared with the traditional diameter rotary kiln, it has the advantages of energy saving and high output, but the variable diameter rotary kiln is more difficult to process, which is more difficult to process than the traditional diameter rotary kiln. Stricter requirements for equipment.
It is a rotary kiln with the same diameter at the front and back. Our common type of rotary kiln was invented by Dietz Germany in 1883. After years of evolution, the rotary kiln has become a general-purpose equipment. It has better effect and higher output than traditional shaft kiln. The processing is simple, but it consumes more energy than the variable diameter rotary kiln.
Rotary kiln refers to rotary calcining kiln (commonly known as rotary kiln), which belongs to the category of building materials equipment. Rotary kiln can be divided into cement kiln, metallurgical chemical kiln and lime kiln according to different materials. Cement kilns are mainly used for calcining cement clinker, and are divided into two categories: dry production cement kilns and wet production cement kilns. Metallurgical chemical kilns are mainly used for magnetization roasting of lean iron ore in iron and steel plants in the metallurgical industry; oxidative roasting of chromium and nickel iron ore; roasting of high alumina vanadium ore in refractory plants and clinker and aluminum hydroxide in aluminium plants; and chrome ore powder and other minerals. Lime kiln (that is, active lime kiln) is used for roasting active lime and light-burning dolomite for iron and steel plants and ferroalloy plants.
The kiln head is the discharge part of the rotary kiln, the diameter is larger than the diameter of the rotary kiln, and it is sealed by the stainless steel fish scales and the kiln body.
It is the main body of the rotary kiln (rotary kiln), usually 30~150 meters long, cylindrical, with 3~5 rolling rings in the middle. Most of the cylinders are processed by factories into 3~10 sections, which are transported by large trucks to the destination and welded. The rolling ring part, also commonly known as (the tire ring), is cast from molten steel, and the rolling ring part of the kiln body is slightly thicker than other parts of the kiln body due to its load-bearing. The supporting tug is also a part of the kiln body and the rolling ring is connected to the foundation correspondingly, and is the load-bearing pillar of the entire rotary kiln. Usually a set of idlers consists of two idlers and two stop wheels. The rotary kiln should be covered with refractory bricks during normal operation.
The kiln tail part is also an important part of the rotary kiln. The shape of the feed end is similar to the cover of a rotary kiln, and it is mainly responsible for feeding and sealing.
Also called preheater, it is a device that preliminarily heats the material by the waste heat of the exhaust gas discharged from the rotary kiln before the material enters the rotary kiln, and it is mostly vertical structure. The principle is to pass the waste heat discharged from the kiln tail of the rotary kiln through the preheating tower filled with raw materials to realize the raw material heating process. In addition, the preheating tower can effectively reduce energy consumption and improve the quality of finished products.
On the contrary, the cooler and the preheater are the devices that rapidly cool down the material of the rotary kiln after firing. It looks like a small rotary kiln, but the diameter is smaller and shorter, and there is no need to lay refractory bricks, and the inside is replaced by a lifting plate. The main function is to rapidly cool the finished product.
The conveyor belt is the material conveying device of the rotary kiln. During use, various forms of damage often occur, such as: edge delamination, festering, defects and cracks; long-distance longitudinal tearing, deep scratches, holes, and large-area wear , Covering the rubber drum bag or peeling, internal defects of the joint, etc. Among them, the longitudinal tear is the most urgent, the edge damage is the most common, the inherent defects of the joint are unavoidable, and the service life after repair is the most concerned.
| Specification | Production capacity (t/h) |
Kiln body slope (%) |
Working speed (r/min) |
Motor power (KW) |
Total weight (t) |
Remark |
| Φ2.5x40 | 180 | 3.5 | 0.98~2.94 | 45 | 142 | Kiln with vertical drum preheater |
| Φ2.5×60 | 168 | 3.5 | 0.516~1.549 | 75 | 222 | Bauxite calcining kiln |
| Φ3×48 | 700 | 3.5 | 0.726~3.63 | 110 | 244 | Five-stage cyclone kiln external decomposition kiln |
| Φ3×60 | 800 | 3.5 | 0.492~1.476 | 75 | 190 | Aluminium sail soil waste incineration |
| Φ3x100.94 | 450 | 4 | 0.3~1.503 | 90 | 526 | Multi-Cylinder Cooling |
| Φ3.2x46 | 1000 | 3.5 | 0.36~3.57 | 160 | 257 | Decomposition kiln outside the preheater kiln |
| Φ3.2×52 | 1200 | 3.5 | 0.343~2.34 | 125 | 275 | Preheater Kiln |
| Φ3.3×50 | 1300 | 3.5 | 0.676~3.38 | 160 | 266 | Plateau type preheater external decomposition kiln |
| Φ3.3×52 | 1300 | 3.5 | 0.266~2.66 | 125 | 283 | Decomposition kiln outside the preheater kiln |
| Φ3.5x54 | 1500 | 3.5 | 0.55~3.4 | 220 | 363 | Decomposition kiln outside the preheater kiln |
| Φ3.6×70 | 1800 | 3.5 | 0.25~1.25 | 125 | 419 | Preheating power kiln |
| Φ4×60 | 2500 | 3.5 | 0.396~3.96 | 315 | 510 | Decomposition kiln outside the preheater kiln |
| Φ4.15×58 | 2500 | 5 | 0.35~0.7 | 110 | 620 | Zinc leaching (calcining kiln) |
| Φ4.2×60 | 3000 | 4 | 0.4~3.98 | 375 | 633 | |
| Φ4.3×60 | 3500 | 3.5 | 0.396~3.96 | 375 | 583 | Decomposition kiln outside the preheater kiln |
| Φ4.5x66 | 4000 | 3.5 | 0.41~4.1 | 560 | 710.4 | Decomposition kiln outside the preheater kiln |
| Φ4.8×74 | 5000 | 4 | 0.396~3.96 | 630 | 899 | Decomposition kiln outside the preheater kiln |
| Φ5.0×74 | 6000 | 4 | 0.35~4 | 710 | 944 | Decomposition kiln outside the preheater kiln |
| Φ5.6×87 | 8000 | 4 | Max4.23 | 800 | 1265 | Decomposition kiln outside the preheater kiln |
| Φ6.0×95 | 10000 | 4 | Max5 | 950×2 | 1659 | Decomposition kiln outside the preheater kiln |
West Fourth Ring Road,
Zhengzhou High-tech Zone
