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1. Stable Magnetic Performance
Adopts high remanence and high coercivity magnetic materials. The demagnetization rate is less than 5% within 8 years, ensuring a long-term stable separation effect.
2. Safe & Durable Structure
Equipped with a professional magnetic isolation design, which prevents the magnetic field from affecting the main shaft and protects bearings effectively. The magnetic group is firmly fixed without falling off.
3. Large Processing Capacity
Optimized tank body design adapts to 0- 6 mm coarse ore and fine ore. No material deposition during operation, realizing high throughput and efficient tailings recovery.
4. Easy Maintenance & Cleaning
Built-in sludge discharge devices on both sides of the tank. Internal sediment can be cleaned quickly, reducing downtime and daily maintenance costs.
Working Principle
The CTB magnetic separator achieves high-efficiency separation based on the magnetic differences of minerals. Its core process is as follows:
1. Pulp Intake: The slurry is fed into the separation zone from the bottom of the tank in a loose, suspended state.
2. Magnetic Adsorption: Under the influence of a strong magnetic field, magnetic minerals (such as magnetite) are adsorbed onto the surface of the rotating cylinder.
3. Magnetic Stirring: Due to the alternating polarity of the magnetic system along the circumference, the magnetic minerals repeatedly tumble (“magnetic tumbling”) as the cylinder rotates. Gangue inclusions are removed by the flushing water, improving the purity of the concentrate.
4. Concentrate Discharge: When the magnetic minerals reach the weak magnetic field zone, they are detached from the cylinder surface by the flushing water and enter the concentrate tank.
5. Tails Discharge: Non-magnetic minerals are discharged from the tailings outlet with the slurry flow.
Due to the use of a semi-counter-current tank structure, the slurry flow direction is basically consistent with the direction of the magnetic field force, allowing magnetic particles to fully contact the high magnetic field area, thus achieving both high recovery rate and high grade.
Product Structure
The CTB series magnetic separator mainly consists of the following six parts:
Cylinder: Constructed from 2–3mm thick stainless steel plate, welded together, with a wear-resistant rubber lining to prevent wear and enhance magnetic adhesion.
Magnetic System: Utilizes a composite of ferrite or neodymium iron boron rare earth permanent magnets, installed in an open configuration inside the cylinder. The magnetic field strength can reach 100–600 mT (1000–6000 Gs).
Tank (Bottom Box): The working area is made of stainless steel and equipped with a water spray pipe to regulate slurry concentration and flow rate.
Transmission Device: A motor drives the cylinder to rotate via a reducer. The rotation speed is typically 10–40 r/min and is adjustable.
Support and Frame: Supports the entire machine structure, mostly welded from carbon steel, ensuring stability and durability.
Magnetic System Adjustment Mechanism: The magnetic declination angle (generally 5°–25°) can be adjusted via cranks and levers to accommodate different ore properties.
