Electrochemical Principle Of Metallurgy
Chapter Name : General Principles And Processes Of Isolation Of Elements |
Sub Topic Code : 102_12_06_06_01 |
Topic Name : Electrochemical Principle Of Metallurgy |
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Sub Topic Name : Electrochemical Principle Of Metallurgy |
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Introduction
• We have seen how principles of thermodynamics are applied to pyro metallurgy. • Similar principles are effective in the reductions of metal ions in solution or molten state. • Here they are reduced by electrolysis or by adding some reducing element. • In simple electrolysis, the Mn+ ions are discharged at negative electrodes (cathodes) and deposited there. • Precautions are taken considering the reactivity of the metal produced and suitable materials are used as electrodes. • Sometimes a flux is added for making the molten mass more conducting.
Pre-Requisites:
Metals, Metallurgy, thermodynamics
Activity:
Aluminium is used to make cans , utensils.
Real Life Question:
How is Aluminium extracted from its ore?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Metallurgy | • Metallurgy is the method involving the extraction of metals from their ores. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Iron rod, Copper wire | All these metals used to make different objects have originally been extracted from their ores. |
Real life uses :
Aluminium cans, copper wires.
Places to visit :
Garage, kitchen.
Practical examples around us
| Examples | Explainations |
|---|---|
| Aluminium can | • Aluminium cans, e.g. coke cans. |
What you learn in Theory:
• We have seen how principles of thermodynamics are applied to pyro metallurgy. • Similar principles are effective in the reductions of metal ions in solution or molten state. • Here they are reduced by electrolysis or by adding some reducing element. • In simple electrolysis, the Mn+ ions are discharged at negative electrodes (cathodes) and deposited there. • Precautions are taken considering the reactivity of the metal produced and suitable materials are used as electrodes. • Sometimes a flux is added for making the molten mass more conducting.
What you learn in Practice:
• Metals are extracted by means of different methods.