Mineral Heat Electric Arc Furnace

Mineral furnace is also known as electric arc furnace or electric resistance furnace. It is mainly used for reducing smelting ores, carbon reducing agents and solvents and other raw materials. The main production of ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon manganese alloy and other ferroalloys, is an important industrial raw materials in the metallurgical industry and calcium carbide and other chemical raw materials. The electrode is self-growing. The electrode is inserted into the charge for buried arc operation, which is characterized by the use of carbon or magnesium refractory material as the lining, the use of arc energy and current through the charge, and the energy generated by the resistance of the charge to melt the metal, one after another, intermittent iron slag, and continuous operation of an industrial electric furnace.
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 discharge and lifting system, loading and unloading system, controller, burn-through device, hydraulic system, mineral furnace transformer and various electrical equipment.
According to the structural characteristics and working characteristics of the furnace, 70% of the system reactance of the furnace is generated by the short network system, and the short network is a high current working system, the maximum current can reach tens of thousands of amperes, so the performance of the short network determines the performance of the furnace, it is precisely because of this reason, so the natural power factor of the furnace is difficult to reach more than 0.85. The vast majority of the natural power factor of the furnace is between 0.7 and 0.8, the lower power factor not only reduces the efficiency of the transformer, consumes a lot of useless work, and is charged additional power fines by the power part, but also due to the manual control of the electrode and the process of the pile, resulting in the increase of the power imbalance between the three phases, the highest imbalance can reach more than 20%. This leads to low smelting efficiency and higher electricity costs, so improving the power factor of the short network and reducing the imbalance of the power grid has become an effective means to reduce energy consumption and improve smelting efficiency. If appropriate measures are taken to improve the power factor of the short networ(YNMT)·