9000KVA Ferrosilicon Submerged Arc Furnace

Submerged arc furnace (Ferrosilicon Arc Furnace) is mainly used to reduce smelting ores, carbonaceous reducing agents and solvents and other raw materials. It mainly produces ferroalloys such as ferrosilicon, ferromanganese, ferrochromium, ferrotungsten, silicon-manganese alloy, etc., which are important industrial raw materials and chemical raw materials such as calcium carbide in the metallurgical industry. Its working characteristic is to use carbon or magnesium refractory materials as ferrosilicon furnace lining and use self-cultivation electrodes.

The electrode is inserted into the charge to perform a submerged arc operation. The energy of the arc and the current passing through the charge are used to generate energy due to the resistance of the charge to smelt the metal. It is an industrial electric furnace that continuously feeds materials, taps iron slag intermittently, and operates continuously.

1. 9000KVA Ferrosilicon Submerged Arc Furnace Main Equipment: This design uses a semi-enclosed fixed Ferrosilicon Furnace with a low smoke hood. The main equipment selections are as follows:

1.1 9000KVA Ferrosilicon Submerged Arc Furnace Body: The furnace body is composed of a furnace shell, a furnace lining, a furnace bottom support, etc. The furnace shell is a cylindrical body welded by 14~18mm thick steel plates. Reinforcement ribs are welded on the outside to ensure that the furnace body has sufficient strength.

 

1.2 The low hood adopts a fully water-cooled structure or a composite structure of water-cooled frame and heat-resistant concrete. Its height meets the needs of equipment maintenance. The fully water-cooled structure adopts water-cooled frame, water-cooled cover plate, water-cooled wall and water-cooled hoarding.

 

1.3 9000KVA Ferrosilicon Submerged Arc Furnace Bus Bar: The furnace bus bar includes the water-cooled compensator at the transformer end, water-cooled copper tubes, water-cooled cables, conductive copper tubes, copper tiles and their hanging, fixed connection and other devices.

 

1.4 9000KVA Ferrosilicon Submerged Arc Furnace Electrode system: The electrode system consists of the controller cylinder, copper tile suspension, pressure ring, water cooling sleeve, electrode lifting device, electrode pressure and release device, etc.

 

1.5 9000KVA Ferrosilicon Submerged Arc FurnaceCooling water system The cooling water cooling system is a device for cooling components that work under high temperature conditions (including short nets, pressure rings, protective sleeves, furnace shells, hoods, and chimneys). It consists of a water distributor, a water collection tank, Composed of pressure gauges, valves, pipes, hoses, joints, etc.
The water path of the pressure ring of the short network (including water-cooled copper pipes, water-cooled cables, and copper tiles) is specially equipped with a water drain device for rapid drainage during maintenance and emergency repairs.

 

2.1 The Ferrosilicon Furnace  transformer adopts low-loss energy-saving shell type submersible thermal transformer, on-load electric voltage regulation, strong circulation, oil-water cooler, impedance voltage 4~6%, primary side voltage can be 35~110KV, secondary side voltage is divided into It is level 5~27 (different capacity transformers and different smelting varieties use different secondary voltage levels), the first few gears are constant power, the last few gears are constant current, and the overload capacity is required to be >25%, using side outlet tube type Connection method.

2.2 High-voltage power supply system The high-voltage power supply system is fed by 35KV (or 110KV) through the transformer isolation switch and vacuum breaker to the electric furnace transformer. At the same time, harmonic absorption devices and primary compensation can be designed according to user requirements.

2.3-voltage power supply system is equipped with a power transformer. The power power is sent to the power cabinet in the main room, and then to the water pump, transformer, voltage regulating device, power control power supply, PLC power supply, hydraulic station and air compressor room. Secondary compensation can be added for low voltage.

3. Main auxiliary equipment can be prepared according to the user's needs or use equipment or drawings designed and manufactured by our company.

3.1 Loading and charging system equipment The loading equipment can be belt loading, single bucket elevator loading, bucket elevator, hopper, tank and single beam electric hoist loading. The feeding equipment can be a distributing trolley, steel silo → unloading pipe → electromagnetic vibrating feeder → automatic gate valve → unloading pipe.

3.2 Equipment for discharging: molten iron ladle, gantry hook for molten iron ladle, transport truck, ground winch.

3.3 Casting equipment: ingot mold

3.4 Stove pounding machine, feeding machine and burn-through device.

3.5 Dust removal equipment

3.6 High pressure compensation, secondary low pressure compensation.