Flotation Gold Mining Machines Mineral Processing

Flotation Machine

Denver D-12 laboratory flotation machine - top view

cells, impeller, rotor stator delrin plastic aisi316 laboratory flotation

Clear acrylic flotation cell for laboratory mineral separation processes.

DESCRIPTION

Enhanced D-12 Type Design for Maximum Efficiency

The Ünal Laboratory Flotation Machine, inspired by the widely recognized D-12 type design, has been modernized and upgraded to provide superior usability, precision, and repeatability in flotation testing. It is designed for mineral processing laboratories that require reliable, efficient, and easy-to-use flotation equipment.

Unlike conventional models, our flotation machine eliminates outdated manual controls and introduces advanced electro-mechanical and digital systems, improving ease of operation and accuracy.

KEY UPGRADES & BENEFITS

✅ Enhanced D-12 Type Flotation Technology – Optimized for better usability & precision
✅ Electro-Mechanical Column Control – No more manual crank wheels! Smooth, effortless lifting & lowering via a hand controller
✅ Digital Speed Adjustment – Replaces old pulley & belt system! Set impeller speed with a simple potentiometer (0 – 2880 rpm)
✅ Integrated Air Flow Control – Fine-tune air delivery with adjustable float flowmeters (1 – 12 L/min)
✅ Versatile Flotation Cells – 1, 2, 3, and 4-liter AISI 316 stainless steel or plexiglass cells available
✅ Repeatability & Reliability – Designed for precise, repeatable flotation tests, ensuring consistent experimental results

TECHNICAL DATA

Application Separation, Froth flotation, Mineral processing, Waste water treatment

Standards CE

Power and Electricity 0.75kW, 220V, 1p, 50 Hz

Compatible with various voltages.

Dimensions 450 x 760 x 630 mm

Weight 85 kg

Application Areas

The laboratory flotation machine is primarily used to enrich ores containing valuable minerals and metals. This method separates minerals based on their hydrophobic (water-repellent) and hydrophilic (water-attractive) properties and is commonly applied in the enrichment of the following materials:

Sulfide Minerals: Sulfide minerals containing copper, lead, zinc, and molybdenum are enriched by flotation. Examples include:
- Copper Sulfide (Chalcopyrite)
- Lead Sulfide (Galena)
- Zinc Sulfide (Sphalerite)
Gold and Silver: Gold and silver ores, particularly when combined with sulfide minerals, can be enriched by flotation.
Industrial Minerals:
- Fluorite (CaF₂): Used in the chemical and ceramics industries, fluorite is purified through flotation.
- Phosphates: Phosphate minerals, used as fertilizers in agriculture, are enriched by flotation.
- Calcite and Dolomite: These minerals, used in the paper, paint, and construction industries, are processed by flotation.
Coal: Flotation is used to reduce ash content and enhance energy value, particularly effective for fine coal particles.
Iron-Containing Minerals: Iron minerals such as magnetite and hematite can be separated by flotation, especially in industrial iron production requiring high purity.
Rare Earth Elements: Rare earth elements, essential for the electronics, energy, and defense industries, can be efficiently enriched by flotation.

Working Principle

The laboratory flotation machine operates on the principle of separating fine-grained materials by flotation in a water environment. In this process, mineral particles interact with water, air bubbles, and chemical reagents, allowing specific minerals to be floated to the surface. Here are the key steps in the machine’s operation:

Sample Preparation and Feeding: A mineral sample mixed with water is added to the flotation cell. The impeller and stator system inside the cell uniformly mix the slurry and generate air bubbles.
Addition of Reagents: Chemical reagents (collectors, frothers, etc.) are added to the mixture to float specific minerals to the surface. These reagents create a bond between mineral particles and air bubbles, enabling flotation.
Mixing and Air Injection: The impeller continuously agitates the slurry, while air is supplied to the cell at an adjustable flow rate. As air bubbles rise, they attach to specific minerals, lifting them to the surface. Unwanted minerals settle at the bottom of the cell.
Collection of Froth Layer: Mineral-loaded bubbles form a froth layer at the top of the cell. This froth layer is manually or automatically collected as a concentrated sample.
Waste Separation: Remaining waste settles at the bottom of the flotation cell and is discharged after the process. This waste can either undergo further processing or be discarded in the sample preparation stage.

This sequence ensures the selective enrichment of minerals and is an effective method for obtaining reliable and repeatable flotation results in laboratory settings.