Scheelite Concentrate Smelting with Tungsten Iron Alloy

The present invention provides a scheelite tungsten alloy smelting method, using a dedicated three-phase electric arc furnace smelting of tungsten alloy. Specific steps are as follows:

1) First, the electric arc furnace is preheated by increasing the temperature of the electric arc furnace is heated to a temperature consistent with the smelting;

2) The steel scrap was added and heating was continued so that the furnace temperature was raised to 1800-2000 ℃;

3) And then with a good charge in the furnace smelting furnace in batches to vote, take charge, and two-thirds of the total volume of the total investment amount of one-third of pitch coke oven heated to a certain temperature, together with the regional refining; after scouring after 1 hour, the furnace temperature was raised to 2500-3000 ℃, the melt in the furnace, more than 80% reduction of WO3;

4) Before digging iron refining end, side by side dug step scouring feeding iron side then add one-third of the total charge and the total amount of the third batch of pitch coke digging iron;

5) After digging and then adding a third of tungsten alloy were poor pitch coke residue, pour slag, tungsten alloy products after finishing packaging and storage of water cooling;

Note: The above tungsten alloy smelting method, its charge outside the furnace with recipes for: scheelite concentrate 70% ~ 80%, FeO4% ~ 9%, SiO20.3% ~ 7%, FeSi4% ~ 9%, content 98% Fe1% ~ 5%; the above ingredients are thoroughly blended formulation can be absorbed.


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