Atomic Absorption Spectrophotometer | Flame & Graphite Furnace AAS TAS990

Engineered for mineral processing laboratories, metallurgical research institutions, and pilot-scale beneficiation testing, the LHGC-100 periodic pulsed high-gradient magnetic separator delivers separation efficiency for weakly magnetic minerals and fine slurry purification. Operating with background magnetic fields adjustable up to 2 Tesla, this wet magnetic separation apparatus evaluates ore separability to establish benchmark data for industrial processing plants.

Pulsating Fluid Dynamics and Anti-Clogging Matrix Design The separation mechanism integrates an adjustable pulsating fluid drive with an engineered magnetic matrix box. Operating at pulse frequencies between 0 and 600 strokes per minute and stroke lengths of 0 to 30 mm, the oscillating slurry hydrodynamic force prevents particulate sedimentation and matrix channel entrapment. The system accommodates fine mineral slurries down to -1.3 mm (with 50% to 100% passing 200 mesh) across pulp solids concentrations of 5% to 40%. The advanced magnetic matrix retains zero residual magnetism once excitation power is deactivated, ensuring clean tailings discharge and reproducible test cycles.

Dual Cooling Configurations for Continuous Excitation To ensure electrical insulation and thermal stability during high-power electromagnetic operation, the system is offered in two cooling variants: direct internal water cooling using hollow copper conductors, or an oil-water composite cooling structure. The water-cooled model delivers background fields up to 1.75 T with a 45 kW excitation rating, while the heavy-duty oil-water composite configuration reaches 2.0 T utilizing a 26.5 kW coil assembly. Both designs incorporate dedicated electrical control cabinets for stepless excitation current adjustment.

Broad Beneficiation and Purification Versatility The platform processes batch feed weights from 100 g to 600 g per cycle, making it suitable for both metallic ore enrichment and non-metallic mineral purification. Primary applications include the recovery of fine ilmenite, manganese, hematite, and limonite ores, separating wolframite from cassiterite, and extracting trace iron impurities from quartz, feldspar, and kaolin clays.

Technical Specifications

Frequently Asked Questions (FAQ)

1. What maximum magnetic field intensity can the LHGC-100 generate?

The water-cooled configuration delivers background magnetic fields up to 1.75 Tesla, while the oil-water composite model achieves up to 2.0 Tesla.

2. How does the periodic pulsation mechanism prevent matrix clogging?

The 0.75 kW pulsating motor generates an oscillating hydrodynamic force with 0 to 30 mm strokes at 0 to 600 strokes/min, keeping fine particles fluid and preventing physical entrapment.

3. Does the magnetic matrix retain residual magnetism when power is switched off?

No, the matrix material eliminates residual magnetism when power is turned off, ensuring captured magnetic particles flush away cleanly during rinse steps.

4. What are the key operational differences between the water-cooled and oil-water cooled models?

The water-cooled model uses hollow copper conductors for direct internal water heat exchange (up to 1.75 T), whereas the oil-water composite model uses an insulated oil bath with an external water exchanger to support higher 2.0 T fields.

5. What is the allowable feed particle size and concentration?

The separator accommodates mineral feeds smaller than 1.3 mm (with 50% to 100% passing 200 mesh) at slurry solid concentrations between 5% and 40%.

6. What sample throughput can be processed per operational batch?

The separation chamber processes between 100 g and 600 g of dry equivalent solid sample per test cycle.

7. Can test results from this machine be directly scaled to industrial operations?

Yes, the separation parameters, magnetic field thresholds, and recovery rates establish ore separability benchmarks that guide the selection and design of commercial plants.

8. What mineral ore types are suitable for processing on this unit?

The unit is suited for weakly magnetic ores such as hematite, limonite, ilmenite, and manganese, as well as separating wolframite from cassiterite.

9. Can this separator be used for non-metallic mineral purification?

Yes, it is widely utilized for high-gradient iron removal from high-purity industrial minerals including quartz sand, feldspar, and kaolin clays.

10. What water supply pressure is required to operate the cooling and rinse systems?

The system requires an external clean water supply maintaining an operating pressure between 0.15 MPa and 0.2 MPa.

11. What are the dimensions of the separation chamber and internal matrix box?

The main separation chamber measures Ø100 × 100 mm, housing a standardized inner matrix box measuring 62.4 × 62.4 × 100 mm.

12. What utilities and electrical infrastructure are required for installation?

The water-cooled model requires 0–45 kW excitation power with up to 1800 A current, whereas the oil-water model requires 0–26.5 kW excitation up to 85 A, both requiring water plumbing and three-phase power for auxiliary motors.