Cement Rotary Kiln Oxidation Pelletizing Rotary Kiln
Ⅰ. Basic introduction of oxidation pelletizing rotary kiln(cenment rotary kiln)
The oxidized pellet rotary kiln is the main production equipment for calcined pellets in the pelletizing plant. The accuracy of temperature detection at each point in the rotary kiln is decisive for the quality, output, energy consumption, cost and safe operation of the equipment. effect. The rotation of the rotary kiln brings a lot of inconvenience to the accurate measurement of the temperature in the rotary kiln. Therefore, choosing an accurate, economical and practical temperature measurement system for rotary kiln is an important means to ensure the normal production of rotary kiln.
Ⅱ. Performance characteristics of oxidation pelletizing rotary kiln(cenment rotary kiln)
(1) The kiln body is welded by alloy steel plate with very strong wear resistance, which has excellent wear resistance, compression resistance and corrosion resistance, and its service life is more than 3 times that of ordinary rotary kilns.
(2) Gears, sliding bearings and other devices have been specially optimized to reduce the failure rate and the operation process is very stable.
(3) The sealing of the kiln head and the kiln tail is relatively reasonable, the heat loss is greatly reduced, the dust emission is effectively prevented, and the processing and production environment is improved.
(4) The volume of the cylinder is relatively large, the processing capacity of the material is large, and the output is increased by 30%-40%.
(5) The calcination efficiency of zinc oxide is super high, the calcination is more thorough, and the grade and recycling rate of zinc oxide are improved.
(6) The energy consumption and electricity consumption are relatively low, and the operating cost is relatively low.
Ⅲ. Working Principle of oxidation pelletizing rotary kiln(cenment rotary kiln)
There are refractory brick lining and heat exchange device in the rotary kiln, which rotates at low speed. The raw material and the hot flue gas are generally heat exchanged in countercurrent, and the material is added from the high end of the kiln. Due to the inclined installation of the cylinder, during the rotation, the raw materials in the kiln move in the axial direction while turning over in the circumferential direction. The burner injects fuel at the low end, and the flue gas is discharged by Gao Rui. The raw materials are heated during the moving process, and after physical and chemical changes, they become qualified products and are discharged from the low end.
Ⅳ. Characteristics and practical significance of oxidation pelletizing rotary kiln
Oxidation pellet rotary kiln has the characteristics of strong adaptability to raw materials, advanced technology and good pellet quality. The development and production of pellets can meet the demand for raw materials after blast furnace overhaul, solve the problems of insufficient clinker, high outsourcing cost and unstable quality, and reduce production costs; Reasonable, it is conducive to the stable and high output of blast furnaces, and the coke ratio is reduced; and the project investment is small and the construction is fast, which not only has good direct economic benefits, but also brings obvious indirect economic benefits to the company's blast furnace production, and provides some employment for the society. opportunities and have certain social benefits.
Cement rotary kiln technical parameters
NO. | Model | Parameter | Transmission | Support | Block Type | Wheel Belt(max)Φ×b(m)(t) | Weight(t) | |||||||
Slope (%) | rpm (r/min) | Capacity (t/h) | Type | Mechanical | Multi-point Hydraulic | Number Of Gears | Bearing Type | |||||||
Motor (kW ) | Reducer | Hydraulic Points | Output Torque (kNm) | |||||||||||
1 | Φ4.0×30m | 3.5 | 0.47~1.4 | 60 (90) | One-sided mechanical transmission | ZSN4-315-092 190KW | ZSY630 speed ratio:63 | 2 | scroll | Single hydraulic stopper | Φ4.81×0.65/0.692 G=22.5 | 329 | ||
2 | Φ5.0×33m | 4.36 | 0.95 max1.27 | 110 (152) | One-sided flexible transmission | YZP400L2-6 330KW | ZSY630 speed ratio:40 | Two points on one side | 144 | 2 | scroll | Double hydraulic stopper | Φ6.1×0.766/0.85 G=50 | 646 |
3 | Φ5.0×35m | 4.25 | 0.3~1.3 | 120 (165) | One-sided hydraulic transmission | Four points on both sides | 82.5×4 | 2 | scroll | Single hydraulic stopper | Φ6.1×0.76/0.87 G=47.7 | 635 | ||
4 | Φ5.9×38m | 4.25 | 0.5~1.5 | 200 (268) | Hydraulic transmission on both sides | Four points on both sides | 87.5×4 | 2 | scroll | Single hydraulic stopper | Φ7.2×0.96/1.0 G=81.46 | 960 | ||
5 | Φ6.1×40m | 4.25 | 0.45~1.35 | 220 (305) | Hydraulic transmission on both sides | 2 | scroll | Single hydraulic stopper | Φ7.4×0.96/1.0 G=83.9 | 988 | ||||
6 | Φ6.4×45m | 4.25 | 0.45~1.5 | 240 (333) | Mechanical transmission on both sides | YP2-450L2-6 400×2 | ZSY800 speed ratio:63 | 2 | scroll | Single hydraulic stopper | Φ7.4×0.96/1.0 G=83.9 |
Cement rotary kiln photo explanation