Stage 3. Vacuum Electrostatic Granule Separation System
AMT_EL.STAT.SEP
The Vacuum Electrostatic Granule Separation Unit is designed for dry, high-efficiency purification of metallic granules and powders by removing non-metallic inclusions due to the target contaminants in the metal powder after PREP and Magnetic Separation process include ceramic particles, oxides, slag and similar non-conductive foreign matter.
The process is performed in an enclosed system under inert gas atmosphere with preliminary evacuation of the installation. Separation is based on the difference in electrical conductivity between metallic granules / powder particles and non-metallic inclusions, enabling selective removal of contaminating phases while preserving the valuable metallic fraction.
The heat-resistant alloys, including nickel- and titanium-based alloys, as well as stainless steels could be processed by this unit.
Key Technical Data
Equipment designation
Vacuum Electrostatic Granule Separation Unit
Primary function
Dry removal of non-metallic inclusions from metallic granules / powders
Separation principle
Electrostatic separation based on the difference in electrical conductivity between metallic particles and non-metallic inclusions
Process atmosphere
Protective inert-gas atmosphere (argon, helium, or gas mixture) with preliminary evacuation of the installation
Typical contaminants removed
Non-metallic inclusions, including ceramic particles, oxides and slag
Applicable feed materials
Heat-resistant alloys and stainless steels, nickel and titanium alloy granules / powders
Particle size range
15-150 microns
Separation efficiency
Removal of non-metallic inclusions: more than 98%
Throughput performance
Not less than 150 kg/h, up to 300 kg/h
Material distribution
Uniform spreading / distribution of granules along the full length of the drums
Pressure control
Residual pressure up to 5x10-3 mmHg (approx. 0.67 Pa), positive pressure 0.1-0.4 atm above ambient
Power supply
380 V, 50 Hz, maximum 50 kW
Overall dimensions (estimated)
4095 mm H (without hoppers) x 5300 mm W x 4000 mm D
electrostatic separation of metal granules, metal powder purification, dry removal of non-metallic inclusions, inert-gas powder handling, vacuum pre-evacuation, fine powder conditioning, high-value alloy granules