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Aluminum alloy gas dumping furnace
Overview:
The furnace design is a special furnace for aluminum alloy gas new heat exchange type enthalpy melting and heat preservation integration, furnace furnace, aluminum liquid double temperature measurement control mode, heat exchange structure, combustion air recovery through flue gas waste heat recovery preheating cycle, Compared with the conventional integrated burner, it saves energy by about 30%, continuous melting, simple structure operation, high thermal efficiency, low burning rate, low carbon environmental protection and long service life. The continuous proportional-regulating burner is adopted, and the combustion-supporting fan adopts variable frequency proportional control. The burner adopts a split combination structure, the temperature in the furnace is kept within the set temperature range, the furnace and aluminum liquid temperature are automatically controlled, and the temperature is super-temperature burning. The device automatically converts small fire or cuts off gas and power. When the temperature is low, the burner automatically converts the fire to heat, effectively controlling the formation of oxide in the furnace and further reducing the oxidation loss.
Details
First, the equipment name: BH-1000KG crucible gas dumping furnace
1. Equipment specifications: BH-1000KG
2. Purpose of use: aluminum melting and insulation
3. Ability to maintain: 1000kg
4. Melting capacity: about 280kg / H
5. Melting temperature: 650 ° C
6. Use power: 380V 50Hz
7. Use fuel: natural gas
Actual calorific value: 8400kcal/nm3
Gas supply pressure: 0.04～0.08Mpa
8. Energy consumption: energy consumption is about 80-90 m3 / ton of aluminum
Second, the furnace structure:
The furnace body is designed to be round and square. The outer casing is welded with 8 PCT A3 steel plate, the furnace body is tilted and the rotating mechanism. The internal thermal insulation material of the main body is made of ceramic fiber insulation board, light insulation brick, high alumina refractory brick and silicon carbide crucible. The bottom of the furnace is made of refractory castable.
The hydraulic dumping system is designed to pour two cylinders of 10T or more, oil pressure station, circulating high pressure oil pipe, etc. The hydraulic dumping control is manual operation, so that problems can be dealt with in time during the dumping process, the dumping speed can be adjusted, and the tilting angle is 90 degrees. .
Third, the combustion system:
High-pressure circulating fan, solenoid valve, proportional valve, pressure reducing valve, pressure gauge, manual valve, ignition controller, high pressure package, control electric box, gas control parts and other necessary combustion systems, combustion air preheat exchanger, combined with separate body Formed together.
Fourth, the temperature adjustment method
1. Temperature regulation of aluminum soup
A set of CA TYPE thermocouples are placed in the furnace and the crucible for temperature measurement. According to the need to set the furnace and aluminum liquidity value, the burner proportional combustion for automatic temperature control.
2. Temperature regulator and thermocouple
The temperature regulator adopts digital display (proportional balance type) to control the operation of the burner according to the actual temperature of the furnace or aluminum liquid, which is beneficial to achieve energy saving effect. The thermocouple protection tube is used Ф50 *L500mm
Link: China Foundry
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