3 ms·
That's an interesting topic. I wonder if the cooling down of steel in a steel mill can be used to increase the temperature of the smelting pots.
by edejong 8y ago
That's an interesting topic. I wonder if the cooling down of steel in a steel mill can be used to increase the temperature of the smelting pots.
- bigger_cheese 8y agoFor an integrated Steel mill most of the heat comes from chemical energy (i.e exothermic reactions). In the blast furnace this comes from Coke, in BOS/LD Converter alloys such as ferrosilicon or silicon carbide "heat raisers" can be used to increase the temperature. Modern plants have things like cogeneration and recovery turbines to produce electricity from the off gas. Biggest electricity usage tends to be from things like extraction fans and conveyor belt motors.
- jabl 8y agoIf we're going to drastically reduce CO2 emissions, we'll probably have to replace blast furnaces with something like hydrogen direct reduction, which needs boatloads of electricity to produce the hydrogen.