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Rotary Calciner

Working Principle: 

The material enters the furnace through the kiln head feeder, and an arc-shaped heating device (stacked kiln body) is added outside the middle portion of the cylinder. The furnace is equipped with a fuel burner or an electric heating element, and the flame of the burner or current of the electric heating element is adjusted by an automatic control system to control the temperature of the furnace so that the material is calcined at a certain temperature, and the calcination time can be controlled by adjusting the rotation speed of the furnace. The treated material is discharged from the lower end by the inclination of the cylinder.  


Characteristics: 

1. The equipment has compact structure and good sealing effect, which reduces material loss and heat loss.

2. Automatic temperature control, segmentation setting, over-temperature alarm, long kiln lining life, uniform wall temperature distribution in each zone, temperature control accuracy ≤ ± 5 °C.

3. The gas combustion is sufficient, the heat transfer efficiency is high, the heat preservation performance is good, and the surface temperature rise of the equipment does not exceed 50 °C.

4. The thermal efficiency of the burner is >99%, the single-pass thermal efficiency of the roaster is more than 41%, the flame of the burner is columnar or flat, straight and powerful.

5. The combustion system exhaust NOx concentration is not higher than 100mg/Nm3.


Material to be dried:

Petrochemical: molecular sieve, catalyst, alumina, aluminum hydroxide;

Chemical industry: ammonium sulfate, ammonium nitrate, urea, calcium magnesium phosphate fertilizer, melamine, ABS resin, PC;

Building materials industry: coal slime, lignite, long flame coal, coke powder, oil sand, fly ash, desulfurization gypsum, quartz sand, chrome ore, diatomaceous earth, cement clinker, activated lime and light burnt dolomite;

Metallurgical industry: copper fine powder, iron fine powder, nickel fine powder, lead fine powder, removing cerium;

New energy industry: lithium battery materials, precursors, nickel-cobalt-manganese hydroxides, etc.


Technical Parameter:


SpecificationLength of the drum(m)Speed(r/min)Slope(%)
ZTG12008~120.5~31~5
ZTG14008~15
ZTG160010~18
ZTG180010~20
ZTG200012~24
ZTG220012~26
ZTG240012~28
ZTG250014~30



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MAIN INTRODUCTION

Rotary calciner is a high-temperature processing equipment modified on the basis of traditional rotary cylinder dryer by changing the form of its heat source. The material enters the furnace through the kiln head feeder, and an arc-shaped heating device (stacked kiln body) is added outside the middle portion of the cylinder. The furnace is equipped with a fuel burner or an electric heating element, and the flame of the burner or current of the electric heating element is adjusted by an automatic control system to control the temperature of the furnace so that the material is calcined at a certain temperature, and the calcination time can be controlled by adjusting the rotation speed of the furnace. The treated material is discharged from the lower end by the inclination of the cylinder.