Lime Rotary Kiln

 1.High Automation Level
The lime rotary kiln is with advanced structure. Its pre-heater with low-pressure loss can improve preheating effect efficiently. After preheating, the resolution ratio of the lime-stones can reach 20~25% when they enter the kiln. Besides, the lime-stones, with fine fraction about 10~15mm, can be used directly.

2.Waste Heat be Reused Effectively
The two sides of the reliable rotary kiln are sealed by the combined scales, which can make the air leakage coefficient less than 10%. Composite refractory materials should be used in order to reduce the loss of radiant heat.

3.Low Energy Consumption
The filling vertical cooler, round or square, can be zoned-ventilation, which can make the temperature of lime-stones in the cooler at about 80°C. As a result, it is very convenient to transport and store. It can also pre-heater the secondary air up to the temperature above 700°C, then the waste heat can be recycled to reduce energy consumption.

Model	Output (t/d)	Main Drive (r/min)	Motor (kW)	Regulating Range (r/min)	Gearbox Velocity Ratio	Weight (t)
Φ2.2×50	96	0.125-1.25	30	132-1320	157	130.71
Φ2.5×50	130	0.516-1.549	55	440-1320	99.96	167.5
Φ3×48	850	0.3309-3.309	90	100-1000	32.11	237
Φ3.2×48	1000	0.375-3.75	160	100-1000	27.469	252
Φ3.2×50	1200	0.398-3.975	190	150-1500	40.85	263
Φ3.3×52	1200	0.391-3.91	190	100-1000	27.707	280.8
Φ4×60	2500	0.396-3.96	315	100-1000	34.601	487.5
Φ4.2×60	2800	0.4165-4.165	420	100-1000	35.526	576.1
Φ4.3×62	3000	0.398-3.98	420	100-1000	35.714	598.5
Φ4.3×64	3200	0.449~4.49	450	100~1000	24.365	585
Φ4.5×66	4000	0.41~4.1	630	100~1000	34.069	710.4
Φ4.8×70	5000~5500	0.4~4.0	630	100-1000	30.876	845.3
Φ4.8×72	5000	0.403~4.03	560	100~1000	30.365	847
Φ4.8×74	5000	0.35~4	630	130~1500	42.226	841

Cement Rotary Kiln

 Cement rotary kiln is mainly composed of cylinder, supporting device, supporting device with catch wheel, transmission device, lubrication device, mobile kiln head and sealing device at the end of the kiln.
1. Supporting Device: it adopts advanced main shaft structure, automatic temperature measuring device and electrical heating device. And it has optional flow support.
 2. Thrust roller: It has mechanical type and hydraulic type. The hydraulic thrust roller is equipped with advanced hydraulic controlling system.
 3. Drive device: It has single drive or double drive. The adjustable-speed motor, DC motor or frequency variable motor control kiln rotation speed. And has features of reliable running and high efficiency.
4. Tyre shim: The shim under tyre has fixed type and adjustable type. The adjustable shim has features of simple structure, easy replacement and maintenance without any damage to shell.
 5. Sealing device: Various types of sealing device are available for different kiln, such as cylinder tighten sealing, spring tighten sealing, graphite block sealing, spring graphite, fish scale type seal etc, which has good sealing effect.
 6 Kiln head hood: It has fixed type and flexible type.

Usage and Application:
The rotary kiln is widely used in the fields of building materials, metallurgy, chemical industry, environmental protection, etc. It can be divided into cement kiln, metallurgy chemical kiln and lime kiln according to the different materials processed. The cement kiln is mainly used to calcine cement clinker; In the process of non-ferrous and ferrous metallurgy, such as iron, aluminium, copper, zinc, stannum, nickel, wolfram, chromium, etc., the rotary kiln can be used to sinter and roast ore, concentrate, intermedium, etc.; The lime kiln is mainly used to calcine limestones.

Model	Output (t/d)	Main Drive (r/min)	Motor (kW)	Regulating Range (r/min)	Gearbox Velocity Ratio	Weight (t)
Φ2.2×50	96	0.125-1.25	30	132-1320	157	130.71
Φ2.5×50	130	0.516-1.549	55	440-1320	99.96	167.5
Φ3×48	850	0.3309-3.309	90	100-1000	32.11	237
Φ3.2×48	1000	0.375-3.75	160	100-1000	27.469	252
Φ3.2×50	1200	0.398-3.975	190	150-1500	40.85	263
Φ3.3×52	1200	0.391-3.91	190	100-1000	27.707	280.8
Φ4×60	2500	0.396-3.96	315	100-1000	34.601	487.5
Φ4.2×60	2800	0.4165-4.165	420	100-1000	35.526	576.1
Φ4.3×62	3000	0.398-3.98	420	100-1000	35.714	598.5
Φ4.3×64	3200	0.449~4.49	450	100~1000	24.365	585
Φ4.5×66	4000	0.41~4.1	630	100~1000	34.069	710.4
Φ4.8×70	5000~5500	0.4~4.0	630	100-1000	30.876	845.3
Φ4.8×72	5000	0.403~4.03	560	100~1000	30.365	847
Φ4.8×74	5000	0.35~4	630	130~1500	42.226	841

Rotary Kiln

Introduce of rotary kiln:
CHAENG (great wall machinery corporation) can produce rotary kiln with diameter Φ1-Φ5m,The rotary kiln can be divided into cement kiln, metallurgy chemical kiln and lime kiln according to the different materials processed.The kiln supporting has rolling and sliding type and the drive can use DC or AC variable frequency control. It has various seal types for different working condition . CHAENG can also design and customize non-standard rotary kiln according to customer’s special requirements.
The cement kiln is mainly used to calcine cement clinker; In the process of non-ferrous and ferrous metallurgy, such as iron, aluminium, copper, zinc, stannum, nickel, wolfram, chromium, etc., the rotary kiln can be used to sinter and roast ore, concentrate, intermedium, etc.; The lime kiln is mainly used to calcine limestones.
Rotary kiln is composed of shell, drive device, support and thrust roller, kiln lining, kiln inlet sealing, head hood and burning device etc.The rotary kiln firing system is equipment with technological innovation.Shell is the heated rotation part, which is welded by high quality carbon steel plate. It is mounted on supporting device through tyre. Mechanical or hydraulic thrust roller is equipped on supporting device. So it will control shell slide in axial direction. Driving device makes shell rotate through gear according to required revolving rate. Big size kiln has auxiliary drive to make shell rotate at low speed for kiln installation and maintenance request. In order to prevent cooling air into kiln and dust come out kiln, there is sealing device at kiln inlet and output end.

This system adopts the world advanced technology,such as the most advanced hydraulic block wheel device, a high measurement accuracy of measurement piston pump, high-precision control valve and contact-type graphite block sealing device.

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Working principle
Material will be feed into kiln tail through chute in gas chamber. As kiln shell is inclined and it rotates slightly, material will move along round shell and will also move along shaft direction from kiln tail to kiln head. Material will be processed through pre-heat, decompose, calcined and will be feed into cooler. Fuel will be given through gas or coal burner at kiln head and will be combusted in kiln. Heat will be transferred to material by fire radiate, hot air flow, kiln brick transfer. The heat will heat and calcine material enough and make it final product.

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Specifications

Model	Output (t/d)	Main Drive (r/min)	Motor (kW)	Regulating Range (r/min)	Gearbox Velocity Ratio	Weight (t)
Φ2.2×50	96	0.125-1.25	30	132-1320	157	130.71
Φ2.5×50	130	0.516-1.549	55	440-1320	99.96	167.5
Φ3×48	850	0.3309-3.309	90	100-1000	32.11	237
Φ3.2×48	1000	0.375-3.75	160	100-1000	27.469	252
Φ3.2×50	1200	0.398-3.975	190	150-1500	40.85	263
Φ3.3×52	1200	0.391-3.91	190	100-1000	27.707	280.8
Φ4×60	2500	0.396-3.96	315	100-1000	34.601	487.5
Φ4.2×60	2800	0.4165-4.165	420	100-1000	35.526	576.1
Φ4.3×62	3000	0.398-3.98	420	100-1000	35.714	598.5
Φ4.3×64	3200	0.449~4.49	450	100~1000	24.365	585
Φ4.5×66	4000	0.41~4.1	630	100~1000	34.069	710.4
Φ4.8×70	5000~5500	0.4~4.0	630	100-1000	30.876	845.3
Φ4.8×72	5000	0.403~4.03	560	100~1000	30.365	847
Φ4.8×74	5000	0.35~4	630	130~1500	42.226	841