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2. Blast furnace gas - Wikipedia

   en.wikipedia.org/wiki/Blast_furnace_gas

   Blast furnace gas (BFG) [1] is a by-product of blast furnaces that is generated when the iron ore is reduced with coke to metallic iron. It has a very low heating value , about 3.5 MJ/m 3 (93 BTU /cu.ft), [ 2 ] because it consists of about 51 vol% nitrogen and 22 vol% carbon dioxide , which are not flammable.

3. Blast furnace - Wikipedia

   en.wikipedia.org/wiki/Blast_furnace

   Blast furnaces differ from bloomeries and reverberatory furnaces in that in a blast furnace, flue gas is in direct contact with the ore and iron, allowing carbon monoxide to diffuse into the ore and reduce the iron oxide. The blast furnace operates as a countercurrent exchange process whereas a bloomery does not.

4. Direct reduction (blast furnace) - Wikipedia

   en.wikipedia.org/wiki/Direct_reduction_(blast...

   For blast furnaces, direct reduction corresponds to the reduction of oxides by the carbon in the coke. However, in practice, direct reduction only plays a significant role in the final stage of iron reduction in a blast furnace, by helping to reduce wustite (FeO) to iron. In this case, the chemical reaction can be trivially described as follows ...

5. Coke (fuel) - Wikipedia

   en.wikipedia.org/wiki/Coke_(fuel)

   The original blast furnaces at Blists Hill, Madeley. In 1709, Abraham Darby I established a coke-fired blast furnace to produce cast iron. Coke's superior crushing strength allowed blast furnaces to become taller and larger. The ensuing availability of inexpensive iron was one of the factors leading to the Industrial Revolution. Before this ...

6. Coking - Wikipedia

   en.wikipedia.org/wiki/Coking

   Coke is used as fuel in a blast furnace. In a continuous process, coke, iron ore, and limestone are mixed together and placed in the top of the blast furnace, and at the bottom liquid iron and waste slag are removed. The raw materials continuously move down the blast furnace.

7. Pulverized coal injection method - Wikipedia

   en.wikipedia.org/wiki/Pulverized_coal_injection...

   The blast furnace method is expected to survive into the 22nd century because of its efficient rate of iron production at competitive costs compared with other iron-making methods. Blast furnaces keep on improving with adaptations arising from new technologies driven by rising global demand, yet the main chemical process remains the same. But ...

8. What is SunCoke Energy and why does it want to buy Granite ...

   www.aol.com/news/suncoke-energy-why-does-want...

   News broke Wednesday that United States Steel plans to sell its two blast furnaces at Granite City Works to SunCoke Energy, Inc. If the sale goes through, it could cost the region approximately ...

9. Open-hearth furnace - Wikipedia

   en.wikipedia.org/wiki/Open-hearth_furnace

   As of 2024, the largest steel mill in the world that still produces steel using open-hearth furnaces is the Zaporizhstal steel mill in central Ukraine, which has seven 500-ton capacity OHFs and one twin-hearth furnace as well as four blast furnaces. The availability of cheap fuel oil in large quantities, as well as the ongoing invasion, largely ...