Calcinator (baking furnace)

With the coal,combustion gas ,oil or electricity as energy sources,the baking furnace is a sort of direct-heating or indirect-he

1. Introduction of Equipment

Calcinator is a sort of high-temperature processing equipment that can treat powder and filter cake-like products, which is also called baking furnace. It can be divided into coal-fired calcinator, gas-fired calcinator, oil-fired calcinator and electrothermal calcinator by energy sources used. By heating methods it can be divided into direct-heated calcinator and indirect-heated calcinator. By operating methods it can be divided into continuous and batch type. Calcinator mainly applies to chemical process of activation, crystal change, oxidation, pyrolysis, reduction, halogenation, sulfating, etc. It’s widely used to process some special materials in petrochemical, inorganic chemical, metallurgy and other industry.

For indirect-heated continuous calcinator, the product is fed through furnace head into furnace shell, there is electronic heating element or combust device in heating furnace, the temperature of furnace hearth is controlled via electronic heating element or combustion device, which ensures the material to be baked under specified temperature. Furnace shell is horizontal or inclined. The material is baked and moves forward while the furnace rotates, the baked product is discharge into next process from outlet. Residence time can be controlled by adjusting rotating speed or shell slope.

Electrothermal calcinator mainly consists of shell, electronic heating system, hearth and control system. Besides atmospheric type, it can also be vacuum type, pressurized type, double cone type and customized according to material requirements.

Gas-fired calcinator mainly consists of shell, burner, hearth, ventilation device and control system. Nature gas, water coal gas, liquid petroleum gas and other gas can be used as fuel. Its advantage is better combustion and high thermal efficiency. Meanwhile, burn process can be easily controlled and cause less contamination compared with solid and liquid fuels.

2. Feature of Electrothermal calcinator

   Well sealed, high-automatized

   Automatic temperature control for each segments

   Safety and reliable heating system

   Insulation furnace temperature below 50°C, less heat loss

   Compact construction, small volume, light weigh

   High efficiency, save energy, no contamination

   Simple operation, convenient maintenance, well operating environment

   Simple auxiliary equipment, easy for maintenance

   Operating temperature up to 400°C~1000°C

3. Feature of Combustion gas calcinator

   Well sealed, less material and heat waste

   Abundant gas combusted, high thermal efficiency

   Automated temperature control, segmental control

   The protection system of suddenly loss electricity

   Well insulation, less heating waste

   Safety, reliable combustion control system

   Compact construction, small volume, light weigh, easy install

   Less contamination compare with using solid and liquid material

   Operate temperature up to 400°C~900°C

4. Specifications and Types

specification (mm) (nominal diameter×shell length)	rate r/min	type
DN150~300×5000	0.5-5.0	Electrothermal rotary cylinder
DN400~500×6000	0.5-4.5	Electrothermal rotary cylinder
DN600~800×10000	0.5-4.0	Electrothermal/ combustion gas rotary cylinder
DN900~1000×16000	0.5-2.5	Electrothermal/ combustion gas rotary cylinder
DN1100~1300×25000	0.5-2.0	Electrothermal/ combustion gas rotary cylinder
DN1400~1500×25000	0.5-2.0	Electrothermal/ combustion gas rotary cylinder
DN1600~1800×25000	0.5-2.0	Electrothermal/ combustion gas rotary cylinder
DN2000~2300×24000	0.5-2.0	Electrothermal/ combustion gas rotary cylinder
DN1500~2000,1m3~3m3	0.5-5.0	Double cone rotary

Note  Due to different material characters, we will design in accordance with process requirement. Above data only for reference.

5. Applicability

Calcinator is widely used for process some special products (such as special catalyst, special molecular sieve, kaolin, mineral powder, special adsorbent, inorganic salt etc.) in petrochemical, inorganic chemical, metallurgy, etc. Mainly application: oil refining catalyst, zeolite molecular sieve, active carbon adsorbent, magnetic materials, sulfidization mineral, manganese, sodium carbonate, aluminum hydroxide, refractory materials, silicate, ceramics, etc.

Calcinator (baking furnace)