Centrifugal Concentrator

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Product Details

Centrifugal Concentrator (Gold Centrifuge)

The Centrifugal Concentrator is a high-efficiency gravity separator designed to recover Fine Gold (Free Gold). By generating a centrifugal force of 60G-100G, it can capture gold particles as small as 20 microns.

It is the standard equipment for modern Alluvial Gold and Rock Gold plants, replacing traditional mercury amalgamation with an eco-friendly and high-yield solution.

Working Principle: Enhanced Gravity (G-Force)

Spinning at high speed to multiply the gravity effect, separating heavy gold from light sand.

Feeding & Spin

Slurry enters the spinning cone. The centrifugal force pushes heavy particles (Gold) outward against the cone wall, while light particles (Sand) float in the center.

Fluidization

Back-pressure water is injected through holes in the riffles. This fluidizes the mineral bed, keeping it loose so heavy gold can penetrate and settle.

Discharge

Tailings overflow continuously. Concentrate remains trapped in the riffles. During the wash cycle (batch type), the concentrate is flushed out into a secure tank.

Technical Choice: Knelson Type vs. Falcon Type

We offer two types of centrifugal concentrators. Which one do you need?

Feature	Knelson Type (STL Series)	Falcon Type (STLB Series)
Discharge Mode	Batch (Intermittent).	Semi-Continuous or Continuous.
Enrichment Ratio	Very High (1000:1).	High.
Application	Placer Gold, Rock Gold Grinding Circuit.	Scavenging, Fine Mineral Recovery.
Automation	Automatic Discharge System.	Manual or Auto.

Core Advantages

1. High Recovery Rate

Capable of recovering free gold down to 30 microns. The recovery rate for placer gold can exceed 98%, far better than sluice boxes.

2. High Concentration Ratio

The enrichment ratio can reach up to 1000 times. A small amount of high-grade concentrate is produced, making final cleaning easy.

3. Eco-Friendly

A purely physical separation process that uses no chemicals or mercury. It is the green alternative for artisanal and small-scale mining.

Typical Applications

● Alluvial Gold Mining:
Primary concentration of heavy minerals from river sand or gravel.
● Rock Gold Grinding:
Recovering free gold in the Ball Mill circuit to prevent over-grinding.
● Tailings Recovery:
Scavenging fine gold from old tailings dumps.
● Platinum & Silver:
Gravity concentration of other precious metals.

Technical Parameters (STL Series)

Model	Capacity (t/h)	Feed Size (mm)	Water (m³/h)	Power (kW)
STL-20	0.5 - 2	< 3	2 - 3	0.75
STL-30	3 - 5	< 3	4 - 6	1.5
STL-60	8 - 15	< 5	8 - 12	4.0
STL-80	25 - 45	< 5	25 - 35	11
STL-100	50 - 80	< 5	40 - 50	18.5
STL-120	80 - 120	< 5	50 - 70	30

Frequently Asked Questions (FAQ)

Q: How often do I need to discharge the concentrate?

A: For batch-type (STL), the cycle time is typically 45-60 minutes, depending on the grade of the feed. The discharge process takes about 2-3 minutes.

Q: Does it require clean water?

A: Yes, the fluidization water must be clean (filtered) to prevent clogging the small holes in the cone. We provide a water filter with the machine.

Q: Can I process the concentrate directly?

A: The concentrate from the centrifuge is high-grade but small in volume. You can upgrade it further using a Shaking Table or Amalgamation Barrel to get pure gold.

Q: Is it suitable for mobile plants?

A: Yes, the Centrifugal Concentrator is compact and has low vibration compared to jigs, making it perfect for mounting on mobile trailers or skids.

Recover Fine Gold Effectively

Stop losing fine gold to tailings. Upgrade to OreSolution Centrifugal Concentrator today.
Contact us for automatic discharge models and pricing.

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