Now high carbon ferromanganese manufacturers smelt high carbon ferromanganese is more and more methods, there are three production process is relatively new, and these three are:
(1) The use of electronic computer control technology, can control the amount of charcoal, adjust the electrode, storage of data, control the batch weighing system and charging and transport system, so that the electric furnace type of stable operation, power consumption decreased (average of 12 per cent), operating time increased, the furnace life is prolonged. Currently has been widely used by countries.
(2) Charge preheating and pre-reduction: the use of closed ferromanganese electric furnace production of high-carbon ferromanganese, the charge through a diameter of 3.5m, 75m long rotary kiln for preheating and pre-reduction of manganese ore, and iron oxide scales and lime drying to remove the water of crystallisation, the charge temperature reaches 80 ℃ into the furnace. The heat source of the rotary kiln comes from the closed electric furnace gas. After adopting this method, the production efficiency of electric furnace is greatly improved, and the power consumption is reduced to 2000kWh/t.
(3) The slag method for the production of high-carbon ferromanganese: this process is characterised by the use of slag resistance heat instead of arc heat, prompting the expansion of the reaction zone in the furnace, to reduce power consumption, improve the elemental recovery rate and production capacity of the purpose.
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