Ferrosilicon is used in steel industry as

Options

A. A flux
B. Scavenger of hydrogen
C. A reducing agent
D. Alloying agent

Answer

**Step-by-Step Solution:**

1. **Understanding Ferrosilicon**: Ferrosilicon is an alloy of iron and silicon, typically containing 15-90% silicon. It is produced by the reduction of silica or sand with iron in the presence of carbon.

2. **Role in Steel Production**: In the steel industry, ferrosilicon serves multiple purposes. One of its primary roles is as a deoxidizer. During the steel-making process, oxygen can be present in the molten metal, which can lead to the formation of oxides that weaken the steel.

3. **Deoxidization Process**: When ferrosilicon is added to molten steel, it reacts with the oxygen present to form silicon dioxide (SiO2) and iron oxide (FeO). This reaction effectively removes oxygen from the steel, improving its quality and strength.

4. **Improving Steel Properties**: Besides deoxidization, ferrosilicon also contributes to the overall properties of steel. It enhances the hardness and tensile strength of the steel, making it more durable and suitable for various applications.

5. **Conclusion**: Therefore, ferrosilicon is used in the steel industry primarily for its deoxidizing properties and its ability to improve the mechanical properties of steel.

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