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The submerged arc furnace is used for the reduction and smelting of metal oxide ore, so it is also called the submerged arc reduction electric furnace.
In general, in order to solve the problem of low power factor of submerged arc furnace, China generally adopts the way of capacitance compensation, which is usually reactive power compensation at the high-voltage end. However, because the high-voltage end compensation can not solve the problem of three-phase balance, and because the inductive reactance of short network accounts for more than 70% of the inductive reactance of the whole system
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, burnthrough device, hydraulic system, submerged arc furnace transformer and various electrical equipment.
Submerged arc furnace is also called electric arc furnace or resistance furnace. It is mainly used for reducing smelting ore, carbonaceous reducing agent, solvent 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 metallurgical industry and chemical raw materials such as calcium carbide.
Due to the different materials and manufacturing processes of power electronic devices, their performance indexes are also different. Thyristor is suitable for the occasions with super power and low working frequency. On the one hand, thyristor has high rated parameters, simple control and mature technology; On the other hand, the thyristor has high surge resistance, high current parameters and good overcurrent resistance, which can better meet the operation requirements.
Submerged arc furnace is a necessary equipment for smelting ferrosilicon, ferronickel, ferrochromium and calcium carbide in ferroalloy industry. According to incomplete statistics, there are more than 30000 submerged arc furnaces in China. For a long time, domestic submerged arc furnaces mostly use AC power supply, resulting in low power factor, difficult control and balance of three-phase power grid, low efficiency and high operation cost.
Xi'an JUXINDE Metallurgical Equipment Co., Ltd., located in Xi'an, Shaanxi, China, is a professional supplier of second-hand metallurgical equipment.
