Write reduction reaction occuring in the blast furnace in the metallurgy of iron at 900-1500 K.

Explanation

To answer the question regarding the reduction reactions occurring in the blast furnace during the metallurgy of iron at temperatures between 900 K and 1500 K, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Process**: The blast furnace is used to extract iron from its ore, primarily iron oxide (Fe₂O₃ or Fe₃O₄), using carbon as a reducing agent. The process involves several reactions, primarily reduction reactions.

2. **Identifying the Key Reactions**: At high temperatures (900 K to 1500 K), carbon reacts with carbon dioxide to produce carbon monoxide, which is a crucial intermediate in the reduction of iron oxides.

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