How much is the submerged electric arc furnace? We must start with the equipment structure of the submerged arc furnace.
The main equipment structure of a submerged arc furnace is divided into a furnace body, furnace cover, electrode system, short network system, water cooling system, tapping system, and hydraulic system.
The furnace body is a vessel for reduction reaction, which is composed of a furnace shell and furnace lining. The reduction reaction is carried out in the furnace body. Carbon lining or magnesium lining can be selected according to different smelting products. The bottom of the furnace body of some smelting varieties, such as industrial silicon and silicon calcium, is equipped with a rotary mechanism.
The furnace cover is a device for recovering flue gas and protecting the environment. It is composed of the framework, cover plate, coaming, and furnace door. Since the environment is a high-temperature zone, in order to prolong the service life of equipment, the framework, cover plate, and furnace door shall be of a water-cooled structure, and the bottom of the cover plate shall be protected by knotting material. The framework and cover plate of the triangle area is made of stainless steel.
The furnace cover is divided into a low hood structure and a fully enclosed structure, which can be designed as a fully enclosed structure for products that do not require furnace tamping during smelting.
The electrode system is a device that converts electric energy into heat energy. It is divided into copper tile structure and combined holder structure according to the structural form. The copper tile structure is composed of copper tile, a pressure ring, a protective sleeve, a copper tube in the furnace, a holder, a lifting system, and a band type of brake pressure release system. The combined holder is composed of a bottom ring, contact element, protective sleeve, copper tube in furnace, holder, lifting system, and electrode pressure discharge system.
The pressure ring of copper bush structure can be an oil cylinder type pressure ring, spring type pressure ring, bellows type pressure ring, etc.
The short network is the equipment that transfers electric energy into the electrode system, including the furnace transformer, water-cooled compensator, short network copper pipe, water-cooled cable, etc. The transformer can be a single-phase transformer or a three-phase transformer.
How much is the steelmaking cost of a submerged arc furnace?
Related capital construction cost: for the newly created 80t large-scale Konsti standard feeding electric furnace with very high output power, the cost is usually around 500 billion yuan, namely:
1. Cost of new industrial plants (some companies use old industrial plants);
2. CONSIDI continuous feeding system software;
3. The electric arc furnace acts as the main machinery and equipment (the newly installed electric furnace is usually between 75-120 tons, and few of them exceed 100 tons);
4. Refining furnace acts as main machinery and equipment (basically supporting facilities with electric arc furnace);
5. Steelmaking equipment (mostly used);
6. Dedusting equipment (this is also a big project, because of the anxiety of the national environmental protection policy, we must clear the customs)
7. Waterway system software;
8. Power engineering auxiliary system software. The above eight items usually include all production systems of submerged arc furnaces. For steel rolling system software, there is no need to carry out capital allocation, and old machinery and equipment are usually used. For the rate of capital construction, the assumed rate of private enterprises can be said to be very fast. It took only half a year to build an electric furnace steelmaking manufacturing enterprise with an annual output of 1 million tons.
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