Recover particles down to extremely fine sizes
The separator is ruggedly built and has proven high availability.
Few moving parts except for the matrix ring support rollers combined with controlled slurry velocities gives low maintenance costs
Unlike to the WHIMS, the Metso HGMS is capable of handling and recovering particles down to extremely fine sizes due to the possibility to choose a suitable matrix grade with large collection area and to control the slurry velocity during the separation process
The flushing sequence takes place outside the magnetic zone and this makes the Metso HGMS less sensitive to the content of ferromagnetic material such as magnetite
Due to the magnetization direction, the Metso HGMS is also less vulnerable for blocking of the matrix due to bridging over
The capacity increases with approximately the square of the diameter of the equipment while the capacity of the WHIMS normally is proportional to the diameter of its rotor
The stray magnetic field is a considerably lower around the Metso HGMS compared with the WHIMS for similar duty
The wear of the METSO HGMS matrix is extremely low and replacement is normally due after eight to ten years in operation and sometimes even longer
- Broad range of applications
- Processing of fine particles
- High separation efficiency
- Simple, reliable design
- Non-clogging operations
- Easy flushing of magnetics
- (Patented backward flush)
- Low specific power consumption
- Low maintenance
- Long component life
- Minimal monitoring
- Large process capacity
The HGMS comprises a solenoid surrounding matrix cassette containing ferritic stainless steel matrix. The solenoid design overcomes many of the limitations of working within the air gap of a conventional horseshoe shaped magnet.
The most important advantage of the design is that the return frame cross section can be increased to cope with higher field strengths without magnetic saturation.
A second advantage is that the direction of the magnetization becomes parallel with the pulp flow and is homogenous over the cassette length. A third advantage is the reduction of stray field around the machine when in operation.