Technical Parameter of Lime Rotary Kiln
Design capacity(t/d) |
150 |
200 |
250 |
|
Product |
Active lime calcined dolomite |
Active lime calcined dolomite |
Active lime calcined dolomite |
|
Rotary kiln |
Specification(m) |
Φ2.5×40 |
Φ2.8×42 |
Φ3×46 |
Effective volume(m³) |
142 |
190 |
235 |
|
Burning temperature |
1350/1250 |
1350/1250 |
1350/1250 |
|
Cooler |
Vertical square cooler |
Vertical square cooler |
Vertical square cooler |
|
Fuel |
Coal gas Coal powder |
Coal gas Coal powder |
Coal gas Coal powder |
|
Heat rate(KJ/KGC3O) |
5300/5000 |
5300/5000 |
5300/5000 |
|
Design capacity(t/d) |
300 |
350 |
400 |
|
Product |
Active lime calcined dolomite |
Active lime calcined dolomite |
Active lime calcined dolomite |
|
Rotary kiln |
Specification(m) |
Φ3.2×50 |
Φ3.5×54 |
Φ3.6×56 |
Effective volume(m³) |
292 |
390 |
430 |
|
Burning temperature |
1350/1250 |
1350 |
1350 |
|
Cooler |
Vertical square cooler |
Vertical square cooler |
Vertical square cooler |
|
Fuel |
Coal gas Coal powder |
Coal gas Coal powder |
Coal gas Coal powder |
|
Heat rate(KJ/KGC3O) |
5300/5000 |
5225 |
5225 |
|
Design capacity(t/d) |
500 |
600 |
750 |
|
Product |
Active lime calcined dolomite |
Active lime calcined dolomite |
Active lime calcined dolomite |
|
Rotary kiln |
Specification(m) |
Φ3.8×58 |
Φ4×60/Φ4.2×50 |
Φ4.3×58 |
Effective volume(m³) |
505 |
575/548 |
670 |
|
Burning temperature |
1350 |
1350 |
1350 |
|
Cooler |
Vertical square cooler |
Vertical square cooler |
Vertical square cooler |
|
Fuel |
Coal gas Coal powder |
Coal gas Coal powder |
Coal gas Coal powder |
|
Heat rate(KJ/KGC3O) |
5100 |
|
|
|
Design capacity(t/d) |
800 |
1000 |
|
Product |
Active lime calcined dolomite |
Active lime calcined dolomite |
|
Rotary kiln |
Specification(m) |
Φ4.3×64 |
Φ4.8×68 |
Effective volume(m³) |
738 |
1005 |
|
Burning temperature |
1350 |
1350 |
|
Cooler |
Vertical square cooler |
Vertical square cooler |
|
Fuel |
Coal gas Coal powder |
Coal gas Coal powder |
|
Heat rate(KJ/KGC3O) |
|
|
|
Brief Introduction and Application of Lime Rotary Kiln
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
2)Preheater system
3)Rotary kiln calcined system
4)Burning system
5)Cooling system
6)Fuel gas treatment system
7)Coal preparation system
5)Lime powder processing and storage transportation systems
Why 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 Processing steps with Lime Rotary Kiln
In the Beginning
Limestone is a naturally occurring and abundant sedimentary rock consisting of high levels of calcium and/or magnesium carbonate, and/or dolomite (calcium and magnesium carbonate), along with minerals. Lime production begins by extracting limestone from quarries and mines.
Sizing . . .
Limestone enters a primary crusher to break the rock. Depending on the size of the feedstone required, limestone may go through a secondary or tertiary crusher to further reduce its size. The stone is then screened into various sizes ranging from several inches to dust-sized particles. The sized stone is then washed.
Calcining . . .
Processed stone is transported by conveyor belt to the lime kilns. To cook or “calcine” limestone, there must be a significant transfer of heat to the limestone. In general, the heat transfer from the fuel source to limestone can be divided into three stages:
♥.Preheating – limestone is heated by direct contact with kiln exhaust gases that enter the preheater kiln.
♥.Calcining – the kiln fuel is burned in the preheated air from the cooling zone and, as the limestone moves down the kiln the heat turns the limestone into quicklime and carbon dioxide (CO2).
♥.Cooling – quicklime leaving the calcining zone is cooled by direct contact with “cooling air.”
While there are multiple kiln types in use, the rotary kiln is the most common kiln found in the U.S. A rotary kiln consists of a rotating cylinder that sits horizontal on an incline. Limestone is fed into the upper or back end of the kiln, while fuel and combustion air are fired into the lower “front end” of the kiln. The limestone is heated as it moves down the kiln toward the lower end. As the preheated limestone moves through the kiln, it is “calcined” into lime. The lime is discharged from the kiln into a cooler where it is used to preheat the combustion air. Lime can either be sold as is or crushed to make hydrated lime.
Hydrated Lime
Quicklime can be processed into hydrated lime by crushing the quicklime, adding water to the crushed lime (water accounts for approximately 1% of raw hydrate), and then classifying the hydrated lime to ensure it meets customer specifications before it is transported.
Lime Rotary Kiln adopts direct flow type of heating with heat soure from firing unit. The material to be dried is pushed back immindiately by spiral board when enters the shell from feeding tank and feeding chute. Because the drier is installed in slope, material flows to the back end under gravity and rotation force, meanwhile, it is lifted by board repeatedly and thrown down accordingly, which make the material form even curtain, and exchange heat sufficiently with inner the heat flow. In the end, water in the material is dried by repeatedly scattering.
1,High production Capacity
2,Effective improve the firing Temperature,lower fuel consumption
3,Fully from the normal preheating temperature
4,Can directly calcining 10-15 fine fraction limestone
5,Widely range to row and fuel materials,unobstructed air,eduction sulfur smoke timely;
6,Stable quality.
Why choose us
1. We Are Factory with 3 Big Production Bases ( NOT Dealer )
All machineries from Winnermac Mining Machinery Manufactory are made by ourselves, with lower price, good quality.
2. Full and perfect service
♥.Pre-sale services: enthusiasm
We provide you with the prophase plan, process flow design
and manufacturer equipment according to your special demand.
♥.Sale services: servant
Send technicians to the jobsite for guiding the installation and adjustment,
training operators and finishing the check and accept together with you
♥.After-sale services: faithfulness
To establish long term friendship, we will regularly pay return visit to customers.
3. Product Delivery
We have developed long and good relationship with many shipping agents. Ocean freight partners are: APL, COSCO, OOCL, CSCL, MSC, etc.
4. If you are new for this business, we will help you
Many thanks for your trust; we can provide you with design scheme for complete production lines, spot inspection and operator training according to your demand.
Over 26 years experience in this field
belt conveyor,bucket elevator,screw conveyor,vibrating feeder,vibrating screen,rotary screen,etc.