High-Altitude Optimized Wet Magnetic Separator with High-Intensity Rare Earth

The CTB series wet drum magnetic separator combines high-intensity permanent magnet technology with a robust drum structure purpose-built for continuous mineral processing operations in challenging environments. This equipment is specifically engineered to maintain stable magnetic separation performance at elevations up to 4000 meters above sea level, making it the preferred choice for gold mining operations in the Andes mountain ranges of Colombia, Peru, and Ecuador. The magnetic system is compounded from high-grade ferrite and rare earth permanent magnets, producing an average magnetic induction intensity of 100 to 600 millitesla on the drum surface. This intensity range is optimized for removing magnetic iron contamination from gold concentrates, cleaning magnetite from gravity circuit tailings, and recovering iron minerals in polymetallic processing flowsheets.

• High-Altitude Optimized Performance: The magnetic separator drive system and electrical components are rated for reliable operation at elevations exceeding 3000 meters. The permanent magnet circuit maintains full magnetic field strength regardless of atmospheric pressure, unlike electromagnetic separators that require de-rating at altitude. This makes it ideal for Colombian Andean gold mines where consistent separation performance is critical.
• High-Intensity Rare Earth Magnets: The magnetic system combines high-coercivity ferrite magnets with strategically positioned neodymium-iron-boron rare earth elements to achieve surface field intensity up to 600 millitesla while maintaining uniform field distribution across the full drum width for consistent separation results.
• Three Tank Configurations: A single drum can be equipped with concurrent (CTS), semi-countercurrent (CTB), or countercurrent (CTN) tank designs, adapting to different process requirements from roughing to cleaning to scavenging without purchasing separate machines.
• Wear-Resistant Drum Shell: The stainless steel drum shell features a replaceable rubber wear layer rated for 8,000 to 12,000 hours of continuous operation processing abrasive gold ore slurries. The shell surface is precision-machined to ensure uniform gap between the drum and magnetic system.
• Anti-Clogging Tank Design: The semi-countercurrent tank geometry prevents solids settling during brief process interruptions and features large-diameter tailings discharge ports that resist clogging from fibrous and clay-rich ores commonly encountered in tropical gold mining regions.
• Low Maintenance Magnetic Circuit: The permanent magnet system requires zero electrical power, generates negligible heat, and maintains full magnetic strength for the equipment lifetime. Bearings are grease-lubricated with extended service intervals designed for remote mining site operations.

The CTB wet magnetic separator integrates into gold processing flowsheets as an iron removal stage after grinding and classification, protecting downstream flotation and cyanidation circuits from magnetic iron contamination that consumes reagents and reduces recovery efficiency. In Colombian gold operations, it is commonly deployed after ball mill discharge to remove grinding media wear fragments and magnetic gangue minerals before the slurry enters centrifugal concentrators or flotation cells. The equipment also serves in heavy mineral sand processing for ilmenite, chromite, and magnetite recovery, and in iron ore beneficiation plants for hematite and magnetite concentration across Brazil and other major iron ore producing regions.

Each magnetic separator is securely packed in a reinforced fumigated wooden crate suitable for maritime and overland transport. The drum assembly is protected with VCI anti-corrosion film and the drive components are individually wrapped and secured. A complete spare parts kit including drive belts, bearings, and wear liners is available. We provide comprehensive operation and maintenance manuals in English and Spanish, 24/7 technical support, and a 12-month warranty covering all mechanical and magnetic components. On-site commissioning and operator training services are available upon request.