Submerged arc furnace is a kind of industrial electric furnace that consumes huge power. Mainly consists of furnace shell, furnace cover, furnace lining, short net, water cooling system, smoke exhaust system, dust removal system, electrode shell, electrode pressure release and lifting system, loading and unloading system, controller, burning through device, hydraulic system, submerged arc furnace Transformers and various electrical equipment, etc. The submerged arc furnace is divided into three layers. The first layer is composed of furnace shell, furnace lining, tapping system, and burning through device. The second layer ( 1 ) furnace cover . Most modern human-shaped submerged arc furnaces adopt a closed type with a sealed furnace cover. Adopting this structure can collect the exhaust gas (mainly carbon monoxide) produced in production and comprehensively utilize it, and can reduce the heat loss of the circuit, lower the temperature of the upper part of the electrode, and improve the operating conditions. ( 2 ) Electrode holder. Most submerged arc furnaces are powered by three-phase power and are arranged in the middle of the furnace in a symmetrical position of a regular triangle. Large-scale submerged arc furnaces generally use electrode materials mixed with anthracite, coke and pitch kerosene, and self-grown electrodes burned during the working process of the electric furnace. ( 3 ) Short net ( 4 ) Copper watts ( 5 ) Electrode shell ( 6 ) Unloading system ( 7 ) Furnace reversing machine ( 8 ) Smoke exhaust system ( 9 ) Water cooling system ( 10 ) Submerged arc furnace transformer ( 11)
The third layer of the operating system ( 1 ) Hydraulic system ( 2 ) Electrode pressure release device ( 3 ) Electrode lifting system ( 4 ) Steel platform ( 5 ) Hopper and circular spreader and other accessories; inclined bridge feeding system, electronic batching system, etc. Three various technical parameters
Transformer capacity ( KVA ) | 12500 | 16,500 |
Shell diameter ( mm ) | 7800 | 8000 |
Furnace shell height ( mm ) | 4300 | 4200 |
Hearth diameter ( mm ) | 6200 | 6400 |
Furnace depth ( mm ) | 2200 | 1900 |
Diameter of polar center circle ( mm ) | 2800±100 | 2800-3000 |
Electrode diameter ( mm ) | 1050 | 1100 |
Electrode current density (A/cm 2 ) | 5.95 | 6.15 |