Electric Arc Furnace: What is Submerged Arc Furnace?

2022年4月26日星期二

What is Submerged Arc Furnace?

What is Submerged Arc Furnace?

Submerged arc furnace is also known as an electric arc furnace or resistance furnace, also known as a reduction furnace or submerged arc furnace. One end of the electrode is embedded in the material layer to form an arc in the material layer and heat the material by using the resistance of the material layer itself; It is commonly used for smelting ferroalloy (see ferroalloy electric furnace), smelting ice nickel and matte (see nickel and copper), and producing calcium carbide (calcium carbide). It is mainly used for reducing smelting ore, carbonaceous reducing agents, solvents, and other raw materials. It mainly produces ferrosilicon, ferromanganese, ferrochromium, ferrotungsten, silicon manganese alloy， and other ferroalloys. It is an important industrial raw material in the metallurgical industry and chemical raw materials such as calcium carbide. It is characterized by using carbon or magnesium refractory as furnace lining and self-cultivation graphite electrode. The electrode is inserted into the charge for submerged arc operation. The energy and current of the arc are used to smelt the metal through the energy generated by the resistance of the charge. It is an industrial electric furnace with continuous feeding, intermittent iron slag discharge, and continuous operation. At the same time, the calcium carbide furnace and yellow phosphorus furnace can also be attributed to the submerged arc furnace due to the same use and working state, but due to the yellow phosphorus furnace. Pure resistive load, so there is also a saying that the yellow phosphorus furnace is attributed to the resistance furnace.

Equipment Composition:

Submerged arc furnace is an industrial electric furnace with huge power consumption. It is mainly composed 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, burn-through device, hydraulic system, submerged arc furnace transformer and various electrical equipment.

Type and Application of Submerged Arc Furnace

Category	Main raw materials	Manufactured products	Reflect temperature 0℃	Power consumption KW*h/t
Ferroalloy FerrosiliconFurnace (45%)Ferrosilicate	Scrap iron, coke, ferrosilicon	Ferrosilicon	1550-1770	2100-5500
Ferroalloy FerrosiliconFurnace (75%)Ferrosilicate	Scrap iron, coke, ferrosilicon	Ferrosilicon	1550-1770	8000-11000
Ferromanganese furnace	Manganese ore, waste iron, coke, lime	Ferromanganese	1500-1400	2400-4000
Ferro-chromium furnace	Chromium ore, silica, coke	Ferric chromium	1600-1750	3200-6000
Ferrous Tungsten Furnace	Tungsten crystal ore, coke	Ferro-Tungsten	2400-2900	3000-5000
Silicon chromium furnace	Ferric chromium, silica, coke	Silicon chromium alloy	1600-1750	3500-6500
Silicon Manganese Furnace	Manganese ore, silica, scrap iron, coke	Silicon-Manganese Alloy	1350-1400	3500-4000
Steel-making electric furnace iron	Ores, coke	Pig iron	1500-1600	1800-2500
Calcium carbide furnace	Limestone, coke	Calcium	1900-2000	1900-3000
Boron Carbide Furnace	Boron oxide, coke	Boron carbide	1800-2500	11000-20000

(1) The electric consumption values vary greatly with the composition of raw materials, the composition of manufactured products, and the capacity of electric furnaces. Here is the approximate value.

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