---
title: Basic Oxygen Furnace (BOF) | one to ONE Holdings
description: Basic Oxygen Furnace (BOF) is the dominant tech for mass-producing steel. It uses pure oxygen to rapidly remove impurities from molten iron.
image: https://www.o2oh.com/hubfs/o2Oh_18mm.jpg
---

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# Glossary

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# Basic Oxygen Furnace (BOF)

The Basic Oxygen Furnace (BOF), or Bessemer Converter, is the dominant technology for mass-producing steel globally.

The BOF process involves blowing pure oxygen at hgh speed onto a bath of molten [**pig iron**](https://www.o2oh.com/glossary/pig-iron)—derived from the [blast furnace](https://www.o2oh.com/glossary/blast-furnace)—and [scrap steel](https://www.o2oh.com/glossary/scrap-steel). This high-velocity oxygen rapidly oxidizes and removes impurities like carbon, silicon, and phosphorus, refining the iron into high-quality steel in a cycle that often takes less than an hour. The use of basic fluxes is critical to form the BOF slag that absorbs these impurities, making this process central to modern, efficient steel production.

### 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)

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