<h3>1.Pyrometallurgy</h3>
- This techniques involves the high temperature at which the Chemical reactions took place between the gases and solids.
- Pyrometallurgy involves calcination, Roasting and smelting process.
<h3> 2.Electrometallurgy</h3>
- This technique involves the metallurgy operations that took place in electrolytic cell.
- Electro- winning and Electro-refining are some of the electrometallurgy process
<h3> 3. Hydrometallurgy</h3>
- Reactions involves aqueous solutions to extract metal, use this technique.
- Hydrometallurgy involves precipitation , distillation , adsorption and solid extraction operations.
Now,
Type of metallurgy are used in the production of Fe is Roasting and Smelting.
<h3>What is Roasting?</h3>
- Ore is heated strongly with other substances, usually with Oxygen.
- Process temperature is below the melting point.
- Some of Impurities is removed as volatile substance.
In this reaction,
FeO changes to Fe₂O₃ to prevent the loss of iron during smelting.
4FeO +O₂→ Fe₂O₃.
Now,
<h3> What is Smelting?</h3>
- The oxides of less electropositive metals like Pb, Zn, Fe, Sn, etc.
- These are reduced by strongly heating with coal or coke.
- Reduction of the oxide with Carbon at high temperature is known as Smelting.
Thus from the above conclusion we can say that , metallurgy are used in the production of Fe is Roasting and Smelting.
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