Wet Magnetic Separator

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Product Details

CTS/CTB/CTN Series Permanent Wet Magnetic Separator

The Wet Magnetic Separator is a highly efficient piece of equipment designed for the continuous wet sorting of fine-grained, strongly magnetic minerals in a slurry state. Utilizing advanced NdFeB (Neodymium) rare-earth permanent magnets, this Wet Drum Magnetic Separator guarantees a highly stable magnetic field with a 10-year demagnetization rate of less than 3%.

This machine is the primary choice for the beneficiation and concentration of iron ore (specifically Magnetite) and manganese ore. Additionally, it is heavily utilized in the non-metallic sector for Silica Sand Iron Removal, extracting fine iron impurities from quartz, feldspar, and kaolin clay to achieve high-purity glass and ceramic grades.

We offer three distinct tank configurations—Downstream (CTS), Counter Current (CTN), and Semi-Countercurrent (CTB)—ensuring the perfect match for your specific particle size, feed concentration, and recovery goals.

Industrial permanent wet drum magnetic separator for magnetite recovery

Core Technology & Features

High-Performance Magnetic System: The internal magnetic system is constructed from high-grade NdFeB permanent magnets. Surface magnetic field strength can be customized from 1500 to 6000 Gauss based on your ore's magnetic susceptibility.
Durable Cylinder Design: The rotating drum is clad in non-magnetic stainless steel or coated with wear-resistant rubber to prevent abrasive slurry from destroying the cylinder over time.
Intelligent Speed Control: The cylinder rotation speed is steplessly adjustable (10-50 rpm) via a frequency conversion motor, allowing you to fine-tune the separation timing as feed grades change.
Anti-Wear Tank Lining: The internal sorting tank is lined with ultra-high molecular weight polyethylene (UHMWPE) to resist abrasion from sliding sand and rocks.

How a Wet Drum Magnetic Separator Works

The separation happens entirely underwater, utilizing a stationary magnetic arc inside a rotating drum.

Slurry Feeding: The mineral slurry flows into the tank box beneath the rotating drum.
Magnetic Attraction: Inside the drum is a fixed magnetic block spanning roughly 120 to 180 degrees. As the slurry passes under the drum, strongly magnetic particles (like magnetite) are instantly pulled up and stick to the surface of the rotating drum.
Non-Magnetic Discharge: Non-magnetic particles (like quartz or silica) are unaffected by the magnets and flow out through the tailings discharge port at the bottom of the tank.
Concentrate Collection: As the drum rotates, it carries the attached magnetic particles out of the slurry and past the edge of the internal magnetic block. Once out of the magnetic field, high-pressure wash water sprays the particles off the drum into the concentrate launder.

CTB series semi countercurrent wet magnetic separator installation

Tank Configurations & Selection Guide

Choosing the right tank type is critical for your recovery rate. Our engineers will help you select the ideal configuration:

Tank Type	Applicable Grain Size	Typical Application
Downstream Tank (CTS)	6 - 0 mm	Best for roughing and primary concentration of coarse magnetic ores. Slurry flows in the same direction as drum rotation.
Counter-Current Tank (CTN)	0.6 - 0 mm	Best for heavy media recovery (Ferrosilicon/Magnetite) in coal washing. Slurry flows opposite to the drum rotation, yielding high recovery rates but slightly lower grade.
Semi-Countercurrent Tank (CTB)	0.5 - 0 mm	The most versatile design. Best for cleaning ultra-fine grained minerals. It keeps particles suspended longer, yielding both high recovery and high concentrate grade.

Technical Specifications

Parameter	CTB Type (Semi-Countercurrent)	CTS Type (Downstream)	CTN Type (Counter-Current)
Cylinder Diameter (mm)	Φ600 - 1200	Φ600 - 1200	Φ600 - 1200
Cylinder Length (mm)	800 - 3000	800 - 3000	800 - 3000
Processing Capacity (t/h)	5 - 100	10 - 120	5 - 80
Feed Concentration (%)	20 - 35	25 - 40	15 - 30
Motor Power (kW)	3 - 22	3 - 30	3 - 18

Frequently Asked Questions (FAQ)

Q1: How do I know how many Gauss (magnetic intensity) I need?

A: Highly magnetic minerals like Magnetite only require a low-intensity field (1500 - 3000 Gauss). If you are trying to remove weakly magnetic iron impurities from silica/quartz sand, you will need a medium to high-intensity field (4000 - 6000 Gauss). We highly recommend running a sample of your ore through our testing lab to determine the exact required intensity.

Q2: What happens if the concentrate grade suddenly drops during operation?

A: A sudden drop in grade is usually caused by one of two things: either the magnetic system position inside the drum has shifted out of alignment, or the high-pressure flush water is not washing the drum efficiently. Both can be quickly adjusted by the operator without stopping production.