Lime Rotary Kiln | Rotary Lime Kiln | Lime Rotary Kiln Manufacturer-Henan Zhengzhou Mining Machinery

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Introduction

Rotary Lime kiln is one kind of furnace which is widely used for calcined active lime production in the world. It is also widely used in many industries such as construction materials, metallurgy, chemical and environmental protection.

The energy-saving rotary lime kiln has the advanced structure and stable operation. It adopts the vertical preheater with low pressure loss which can effectively improve the preheating eﬀects. The raw materials' decomposition rate in the vertical preheater can reach to 30% before entering into the rotary kiln. It is also suitable for diﬀerent fuels including pulverized solid fuel, liquid fuel and gas fuel. The ﬁnal lime products have high activity. This kind of rotary kiln already have been widely used in the steel industry and chemical industry.

According to the calcination character of limestone, lime rotary kiln is specialized design for production of active lime. This type of kiln can work with vertical preheater and vertical cooler to achievethe advantages like high use ratio of raw materials, complete calcination, even quality, good quality lime, high capacity output, environmental and energy saving, simple operation and longer working life. This kiln is very suitable for limestone calcination for industries like metallurgy, chemical, construction materials and etc.

Features

1. The rotary kiln has a stable output, so it is suitable for large,medium-sized and small active lime production lines.

2. The rotary kiln is open-type calcination process. Its structure is very simple. The quality of ﬁnal lime is stable and with low rate of light-burnt and over-burnt. The rotary kiln can make the high quality lime with higher activity for steel making industry. Under the same conditions, the activity of lime produced by rotary kiln is higher than that of gas-ﬁred vertical kiln, with an average 30mL higher, and the activity is normally 340~380mL, even up to 400mL.

3. The rotary kiln can directly feed into fine limestone with sizes of 10~50mm. Normally, 0~30mm ﬁne limestone produced accounts for 30-40% of the total quantity. The construction of the rotary kiln production line can not only make full use of high-quality limestone mine resources, but also can meet the sustainable development policy of the lime industry.

4. The ﬁnal lime product has stable quality is the most advantage by rotary kiln process. The active lime production project is suitable for the comprehensive development of mine resources and has a good development prospect.

Technical Parameter

Capacity (t/d)	150	200	250	300	350	400	500	600	800	1000	1200
Main Equipment	Main supporting equipment models and technical and economic indicators
Vertical Preheater	YRQ04	YRQ06	YRQ06	YRQ08	YRQ08	YRQ10	YRQ12	YRQ12	YRQ14	YRQ18	YRQ20
Rotary Kiln	Φ2.5×40m	Φ2.8×43m	Φ3.0×48m	Φ3.2×50m	Φ3.3×52m	Φ3.6×55m	Φ3.8×58m	Φ4.0×60m	Φ4.3×65m	Φ4.9×70m	Φ5.1×72m
Vertical Cooler	LSF36		LSF44				LSF56		LSF80		LSF112
Calcination Temperature /℃	1100±50
Energy Consumption Index /（kCal/kg）	1200±100								≤1150		≤1100
Power Consumption Index /（kW·h/t)	40±5
Limestone: Lime	1.7~1.78:1
Light and Over burnt Rate /%	≤5
Lime Activity /ml	≥340（depends on the composition of limestone）
Lime Discharging Temperature /℃	Ambient Temperature +60
Limestone Feeding Size /mm	10~20/20~40
Emission Concentration /（mg/Nm3）	≤10
Annual Working Day / Days	≥340
Overhaul Cycle / Year	1~3
Labor / Shift	2~3
Applicable fuel	Coal powder, Coke oven gas, Semi-coke furnace gas, Converter gas, Blast furnace gas, Calcium carbide furnace gas, Natural gas, Diesel oil, Heavy oil, Liqueﬁed petroleum gas, biomass fuel etc.