Lime Rotary kiln production process
Lime can be divided into two ordinary lime and lime according to the nature of activity, the former mostly ordinary shaft kiln firing kiln and its degree of activity is generally less than 200ml, mainly for construction and road use; Latter fired rotary kiln and its activity can reach 300 ~ 420ml, Lime kiln fired with the best quality, they are mainly used in steel smelting, chemical and power plant desulfurization calcium carbide industries
Lime Rotary kiln production process is the most advanced of all the activity in the lime production process, due to burning evenly, adaptability of raw materials, degree of activity of their products in more than 360ml, and some plants even reached 420ml. Currently, the largest of several groups such as Baoshan Iron and Steel, Wuhan Steel, Anshan Iron and Steel, Maanshan Steel, Jinan Iron and Steel, Handan Iron and Steel, Sha Steel, Panzhihua Steel, TISCO fliers produced by the activity of lime rotary kiln system for steel production.
This project is Two lines of 500TPD Lime Production Line reaching to the production capacity scale of 330, 000 ton per year. First stage construction of one line 500 TPD production line, and reserve the construction area for the second stage 500 TPD lime production line.Project includes the following sections
1)Screening of raw materials, the feeding system
3)Rotary kiln calcined system
6)Fuel gas treatment system
7)Coal preparation system
5)Lime powder processing and storage transportation systemsWhy is it a advanced energy saving plant?
A) There is a vertical preheater in the end of rotary kiln, make the best of the high temperature combustion gas to preheating the materials, so that materials in the preheater was partially decomposed, so that System production capacity increased by 40%, and thermal efficiency increased by 30% comparing the traditional process
B) Regarding the cooling system of the end high active lime product, We apply the modern advanced technology of the new type vertical cooling machine, The device is new fourth generation reference to the foreign upright cooler specially designed products in late nineties, The device machine running smoothly, with a strong quenching effect, the cooling effect is obvious, the increased activities of the lime is extremely beneficial
C) Flue gas treatment system configuration and high efficiency heat exchanger bag filter, replacing the traditional electrostatic precipitator, the measures will not only reduce the use of highly efficient heat exchanger preheater exhaust gas temperature, increase air temperature, to reduce the volume of the combustion gas, bag dust collector replaced the electrostatic precipitator, saving energy.
|lime rotary kiln|
|specifications||yield||speed(rpm)||Bearing number(a)||reducer||Motor model||power|
|Φ2.8x43m||8.3||0.62-1.5||3||host zs165-6||host YCT355-4B||75|
|ssist zs50-1||ssist Y160L-6||11|
|Φ3.0x50m||9.4||0.5-1.5||3||host zs165-3||host ZSN4-280-11B||125|
|ssist zl50-1||ssist Y160L-6||11|
|Φ3.2x50m||10.4||0.4-1.5||3||host zl130-16||host ZSN4-280-11B||125|
|ssist zl50-10||ssist Y180L-4||22|
|Φ3.3x55m||12.5||0.92-2.74||3||host nzs995-45vbl||host ZSN-280-11B||125|
|ssist ZL42.5-10.2||ssist Y160L-4||11|
Working Principle of Rotary Kiln:
1) With a certain slope to the level, the whole kiln body is supported by rollers and fitted with thrust rollers to control up and down movement of the kiln body.
2) Besides main driving unit for driving system, it is also fitted with the auxiliary driving unit so as to ensure the kiln body still can rotating when the main motor is powered off and prevent it from deforming.
3) The kiln head adopts housing type sealing and kiln rear uses axial contact sealing unit so that reliability of sealing could be ensured.
Types: Rotary kiln belongs to building material equipment, and it can be divided into cement kiln, metallurgy chemical kiln and active lime kiln, porcelain kiln according, building material kiln, calcined petroleum coke rotary kiln to different materials. Application of Rotary Kiln: 1) Rotary kiln is the Thermal Equipment, heating materials, in cement industry for calcining clinker. 2) It is also used in various industries, such as cement, nonferrous metallurgy, ferrous metallurgy, chemistry, building, refractory material, environmental protection, etc.