Flotation Machines in Banks Plant Setup
Product Overview
Mechanical flotation cells are used in mineral processing to separate valuable minerals from ore based on differences in floatability. The system uses an impeller-driven mechanism to mix air and slurry, enabling flotation of selected particles.
Working Principle :
- Slurry is introduced into the impeller zone
- Rotating impeller creates a vortex between:
- Sand pipe (top)
- Draft tube (bottom)
- Vortex action:
- Creates internal vacuum
- Circulates slurry from bottom to rotor
- Air is drawn into the vortex core
- Air mixes with slurry to form bubbles
- Mineral particles attach to bubbles and rise to form froth
Process Flow / Operational Steps :
Grinding :
- Ore is ground with water and reagents
- Objective: Liberate mineral particles
Classification :
- Slurry passed through cyclone
- Separation into:
- Sands (coarser fraction)
- Slimes (fine particles, ~30 µm)
- Slimes are removed due to:
- Poor flotation response
- High reagent consumption
- Negative impact on selectivity
Conditioning :
- Slurry mixed with reagents
- Time allowed for:
- Proper reagent distribution
- Interaction between mineral particles
- Enhances differences in floatability
Operational Notes :
- Perfect mineral liberation is difficult without over-grinding
- Fine and coarse fractions may be processed separately
- Proper conditioning improves flotation efficiency and selectivity
Applications
- Mineral flotation processes
- Separation of valuable minerals from ore
- Processing of slurry (pulp) in flotation circuits
Features & Benefits
- Side feed entry into impeller zone
- Paddle-wheel type impeller system
- Creation of rotating pulp vortex
- Self-induced air suction mechanism
- Internal circulation of slurry through draft tube
- Efficient mixing of air and pulp
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