Process for the production of pig iron and sponge iron

Details Process for the production of pig iron and sponge iron Process for the production of pig iron and sponge iron

C - Chemistry, Metallurgy

21

B

C21B 13/02 (2006.01) C21B 13/00 (2006.01) C21B 13/14 (2006.01)

Patent

CA 2052659

A process for producing pig iron is described, which contains a reducing shaft furnace 1 and a melting gasifier 2. The sponge iron produced from iron ores in the reducing shaft furnace is supplied to the melting gasifier and converted there into a pig iron melt. The gas produced in the melting gasifier is supplied directly via a line 4 as reducing gas to the reducing shaft furnace. The blast furnace gas passing out of the reducing shaft furnace, after traversing a CO2 scrubber 6, is at least partly heated is a heat exchanger to 200 to 500°C and passed to a partial combustion plant 13 where, accompanied by the addition of ozygen, the gas is heated to the necessary reducing temperature.

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