Method for direct steelmaking using mixture of iron oxide scale and anthracite smalls with electric furnace
A technology of iron oxide scale and anthracite powder, which is applied in the field of steelmaking, can solve the problems of large power consumption, high energy consumption, and large investment, and achieve the effect of small investment and low energy consumption
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[0012] Step 1. In the electric furnace, add the mixture of anthracite or graphite coal, lime, and iron oxide scale, and blow the mixture of steam, air or oxygen and anthracite powder into the furnace for 50 to 80 minutes, and the temperature rises. To 1650~1680 ℃, make molten steel, deoxidize and reduce, and tap molten steel, wherein, the feeding weight parts of each component in the electric furnace are:
[0013] 80-90 parts of iron oxide scale
[0014] 5 to 10 parts of anthracite or graphite coal
[0015] 2 to 4 pieces of lime cubes
[0016] 8 to 10 parts of anthracite powder,
[0017] Step 2, continue to add the mixture of anthracite block or graphite coal block, lime block and iron oxide scale in the electric furnace, and repeat the process of step 1.
[0018] In the above embodiment: the size of anthracite block or graphite coal block is 3-8 mm, and the size of lime block is 3-5 mm. The oxide scale is preferably made of stainless steel oxide scale.
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