Drum Magnetic Separator
Wet drums in heavy media applications provide continuous recovery of magnetite or ferrosilicon. Metflo Process has set the industry standards in the heavy media industry developing both the design criteria of the magnetic circuit and the benchmark of operation. The 750 gauss Interpole magnetic element, developed by Metflo Process, is the most acclaimed magnet of engineering standards in the industry. Metflo Process has also set the benchmark for wet drum performance. The culmination of various in–plant tests has demonstrated that the separators will achieve magnetite recoveries in the 99.9+ percent. (This is based on magnetite losses of less than 1 gram/gallon of non–magnetic effluent).
Two basic tank styles are offered. The drum rotates in the same direction as the slurry flow in the concurrent tank style. The slurry enters the feedbox and is channeled underneath the submerged drum. The slurry then flows into the magnetic field generated by the drum. The magnetite is attracted by the magnetic field, collected on the drum surface, and rotated out of the slurry flow. This tank style results in a very clean magnetic product.
The counter–rotation tank style is preferred for heavy media applications. The drum rotates against the slurry flow in the counter–rotation tank style. The slurry enters the feedbox and flows directly into the magnetic field generated by the drum. The magnetite is attracted by the magnetic field, collected on the drum surface, and rotated out of the slurry flow. Any magnetite that is not immediately collected will pass through to a magnetic scavenging zone. The short path that the magnetic material must be conveyed between the feed entry point and the magnetics discharge lip, combined with the magnetic scavenging zone, results in high magnetite recoveries.
