2022年10月31日星期一

Submerged Arc Melting Furnace Principle

 

Submerged Arc Melting Furnace Principle

Submerged Arc Melting Furnace Principle


A submerged arc melting furnace is also called an electric arc furnace or electric resistance furnace. 

Submerged arc melting furnaces are mainly used for reducing smelting ores, carbonaceous reducing agents and solvents, and other raw materials. 

It mainly produces ferrosilicon, ferromanganese, ferrochromium, ferrotungsten, silicon-manganese alloy, and other ferroalloys, which are important industrial raw materials in the metallurgical industry and chemical raw materials such as calcium carbide. 

The submerged arc melting furnace working principle is to use carbonaceous or magnesia refractory material as furnace lining and use self-cultivation electrodes. 

The electrode is inserted into the charge for submerged arc operation, using the energy and current of the arc to pass through the charge, and generating energy due to the resistance of the charge to smelt metal, feeding continuously, intermittently tapping iron slag, an industrial electric furnace with continuous action.


Submerged Arc Melting Furnace Principle & Application

CategoryMain raw materialsManufactured products
Reflect temperature 0℃
Power consumption 
KW*h/t
Ferroalloy Ferrosilicon
Furnace (45%)Ferrosilicate
Scrap iron, coke, ferrosiliconFerrosilicon
1550-1770
2100-5500
Ferroalloy Ferrosilicon
Furnace (75%)Ferrosilicate
Scrap iron, coke, ferrosiliconFerrosilicon1550-1770
8000-11000
Ferromanganese furnaceManganese ore, waste iron, coke, limeFerromanganese
1500-1400
2400-4000
Ferro-chromium furnaceChromium ore, silica, cokeFerric chromium
1600-1750
3200-6000
Ferrous Tungsten FurnaceTungsten crystal ore, cokeFerro-Tungsten
2400-2900
3000-5000
Silicon chromium furnaceFerric chromium, silica, cokeSilicon chromium alloy
1600-1750
3500-6500
Silicon Manganese FurnaceManganese ore, silica, scrap iron, cokeSilicon-Manganese Alloy
1350-1400
3500-4000
Steel-making electric furnace ironOres, cokePig iron
1500-1600
1800-2500
Calcium carbide furnaceLimestone, cokeCalcium
1900-2000
1900-3000
Boron Carbide FurnaceBoron oxide, cokeBoron carbide
1800-2500
11000-20000

   

Industrial waste heat refers to a large amount of waste heat generated in industrial production lines of steel, petrochemical, building materials, and non-ferrous metals. 

Waste heat power generation technology refers to the technology that uses the high-grade heat of the enterprise to recover and converts it into electricity for the enterprise's own use. my country has always regarded the use of waste heat power generation as one of the important measures to save energy and reduce consumption and achieve cyclic development and has given strong support. 

At present, the application field of waste heat power generation technology in my country continues to expand, but in the field of ferroalloy and calcium carbide, flue gas waste heat and other comprehensive waste heat recovery power generation technology are still relatively lacking.

A few days ago, a seminar on waste heat recovery and utilization of submerged arc furnace power generation technology was held in Beijing. Leaders and experts from the National Energy Office, General Iron and Steel Research Institute, National Development and Reform Commission, and various industry associations discussed the development of Xi'an Rich Energy Engineering Technology Co., Ltd., Waste heat power generation technology for ferroalloy, calcium carbide, and other fields. 

The waste heat recovery power generation in the fields of ferroalloy and calcium carbide has not been paid much attention because of its large volume and wide range. This technology fills this gap, improves the waste heat recovery rate, and reduces the cost.

At present, energy conservation and emission reduction have become a basic national policy in my country, and the ferroalloy industry is a typical high-energy-consuming industry. The promotion of waste heat recovery power generation technology in this industry is conducive to reducing corporate energy consumption and improving energy utilization efficiency. 

Not long ago, the three ministries and commissions of the state issued a document to cancel the preferential electricity price for high-energy-consuming enterprises, and the preferential electricity price for the ferroalloy industry has been canceled since October 20, 2007. 

With the increase in electricity cost, the investment recovery period of waste heat recovery power generation projects of ferroalloy enterprises will be further shortened, and this technology will have better development prospects.


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