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Rotary Kiln

Rotary Kiln

The rotary kiln is refers to the rotary calcining kiln, belongs to building material equipment. Rotary kiln according to different processing materials can be divided into cement kiln, metallurgy chemical kiln and lime kiln. Cement kiln is mainly used to calcine cement clinker, cement kiln dry process production and wet process production of two kinds of cement kiln. Metallurgical chemical kiln is mainly used for metallurgical industry Iron and steel plant Iron ore calcination, chromium, nickel ore Oxidation roasting. Lime kiln (i.e., active lime kiln) used for roasting plant, ferroalloy plant with the active lime and calcined dolomite.

Cement rotary kiln is the main equipment of cement clinker dry process and wet process production line. Rotary kiln consists of cylinder, supporting device, gear wheel bearing device, transmission device, and the kiln head, sealing device, coal injection pipe device and other parts. The kiln body and the level of the rotary kiln are inclined, and the whole kiln body is supported by a supporting wheel device, and a gear wheel device for controlling the upper and the lower shifting of the kiln body is arranged. In addition to the main transmission, the transmission system is also provided with an auxiliary transmission device which can make the kiln body rotate when the source is broken in the main power supply, so as to prevent the kiln body from bending and deforming. Kiln head, kiln tail seal device adopts advanced technology to ensure the reliability of the seal.

rotary kiln has many advantages

1. Rotary kiln has many advantages, such as great production capacity, high mechanization and automation, strong adaptability to raw material, high activity of its product, stable production operation, perfect environmental protection measures, etc. Therefore, it is widely used in many countries.

2. The rotary kiln has simple structure, and the kiln body is mainly composed of cylinder, bearing, drive, sealing device for kiln head and kiln tail. It has convenient and reliable production process control, less quick-wear parts and high operation rate. It is equipment for cement plants to calcine cement clinker.

3. Through technology innovation, the calcination system of rotary kiln adopts the most advanced hydraulic gear wheel device at home and abroad, and adopts metering plunger pump with high measuring accuracy, high-precision flow speed control valve, contact graphite block sealing device and other domestic advanced technologies. The rotary kiln is easy to operate and its performance is reliable. The thermal regulation being stabilized and the operation rate being improved, compared with equipment with the same specifications, the operation rate increases by 10%, yield by 5%-10%, heat rate reduces by 15%.

Rotary Kiln Technical Parameters

Specifications(m) Φ4×60 Φ4.2×60 Φ4.3×60 Φ4.8×74
Capacity(t/d) 2500 2800 3000 5000
Kiln body inclination(%) 3.5 3.5 3.5 4
Number of support 3 3 3 3
Catch wheel type Hydraulic pressure Hydraulic pressure Hydraulic pressure Hydraulic pressure
Kiln speed Main drive 0.396-3.96 0.4165-4.165 0.398-3.98 0.35-4
Slow drive 8.56 10.35 9.9 8.52
Main drive Motor Type ZSN4-355-092 ZSN4-355-12 ZSN4-355-12 ZSN4-400-092
Rated power(K/W) 315 420 420 630
Spdde range(R/M) 100-1000 100-1000 100-1000 130-1500
Rated voltage(V) 440 440 440 660
Reducer Type ZSY630-35.5 ZSY710-35.5 ZSY710-35.5 JH710-SW305-40
Velocity ratio 34.601 35.526 35.714 42.226
Auxiliary drive Motor Type Y200L-4 Y225S-4 Y225S-4 Y250M-4
Rated power(K/W) 30 37 37 55
Spdde range(R/M) 1470 1480 1480 1480
Rated voltage(V) 380 380 380 380
Reducer Type ZL65-16 ZSY280-3505 ZSY280-3505 JH220C-SW302-28
Velocity ratio 40.85 35.745 35.714 28.125
Total weight(t) 487.5 576.1 598.5 841