Concentration Of Ores
Chapter Name : General Principles And Processes Of Isolation Of Elements |
Sub Topic Code : 102_12_06_03_03 |
Topic Name : Concentration Of Ores |
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Sub Topic Name : Froth Floatation Methods |
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Introduction
We examine the method and origin of the Froth Flotation method in the concentration of ore and define the components associated with it.
Pre-Requisites:
Ore, Gangue, Suspension.
Activity:
When washing clothes, the dirt rises up along with the froth, leaving the cloth fabric. Similarly, the ore particles rise up, with the froth created by this process, separating it from the gangue.
Real Life Question:
How do we get pure zinc, to make compounds like lacto calamine, from zinc ore?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Froth Flotation | A method for concentration of ore using a rotating paddle on a suspension of the ore with water. |
| Collectors | Substances which act on the ore particles and make them non-wettable. |
| Froth Stabilizers | Substances which act on the froth and stabilize it. |
| Depressants | Substances which are used in a mixture of two sulphide ores to depress one and bring out the other on the froth. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Flash cards | To remember the components involved in the froth flotation process. |
| Video aids | To understand how the froth forms. |
Real life uses :
How do we get pure zinc, to make compounds like lacto calamine from zinc ore?
Places to visit :
Watch what happens in washing machines- the contents get rotated, and the dirt rises to the top with the foam- just like the ore particles in froth flotation.
Practical examples around us
| Examples | Explainations |
|---|---|
| What happens when we wash clothes? | The dirt gets washed off to the surface with the froth, just like the ore particles in froth flotation. |
What you learn in Theory:
How to carry out the froth flotation method in separating gangue from sulphide ores, or even two sulphide ores, by using depressants.
What you learn in Practice:
The method and functioning of the froth flotation method, and the components involved in it.