---
title: Blast Furnace | one to ONE Holdings
description: Blast furnaces are a major CO₂ source. The steel industry is shifting from this traditional method to hydrogen-based steelmaking.
image: https://www.o2oh.com/hubfs/o2Oh_18mm.jpg
---

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# Glossary

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- [A～G](https://www.o2oh.com/glossary?val=a_g)
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- [Numbers ・ Symbols](https://www.o2oh.com/glossary?val=0_9)

# Blast Furnace

A blast furnace is a large industrial furnace that has been the dominant method for producing liquid iron for centuries.

The process uses coke, a carbon-rich fuel, to melt iron ore. While highly effective, its reliance on coke makes it one of the largest sources of industrial [CO₂ emissions](https://www.o2oh.com/glossary/co2-emission), posing a major challenge to global climate goals.

In recent years, the steel industry has begun a fundamental shift toward decarbonization. This involves moving away from traditional blast furnaces to alternative technologies, such as [hydrogen-based steelmaking](https://www.o2oh.com/glossary/hydrogen-based-steelmaking). This process uses green hydrogen to reduce iron ore, producing only water vapor as a byproduct. This marks the next frontier for steel production and the move toward a green steel future.

### RELATED WORDS

---

- [Bosh](https://www.o2oh.com/glossary/bosh)
- [Butterfly Diagram](https://www.o2oh.com/glossary/butterfly-diagram)
- [The Bell-less Top (BLT)](https://www.o2oh.com/glossary/the-bell-less-top-blt)
- [Blast Furnace Gas (BFG)](https://www.o2oh.com/glossary/blast-furnace-gas-bfg)
- [BOF Slag](https://www.o2oh.com/glossary/bof-slag)
- [Bell System](https://www.o2oh.com/glossary/bell-system)
- [Basic Oxygen Furnace (BOF)](https://www.o2oh.com/glossary/basic-oxygen-furnace-bof)

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