principle of the Eddy Current Separator is fairly straightforward.
Basically, a rotor comprised of magnet blocks, either standard ferrite
ceramic or the more powerful rare earth magnets depending on application,
are spun at high revolutions (over 3000 rpm) to produce an ‘eddy
current’. This eddy current reacts with different metals,
according to their specific mass and resistivity, creating a repelling
force on the charged particle. If a metal is light, yet conductive
such as aluminum, it is easily levitated and ejected from the normal
flow of the product stream making separation possible. Separation
of stainless steel is also possible depending on the grade of material.
Particles from material flows can be sorted down to a minimum size
of 3/32" (2mm) in diameter. There is no question that Eddy
Current Separators have been a crucial development for the recycling
In a world of depleting natural resources the race is on to find
faster, cheaper, more efficient ways of reclaiming and recovering
raw materials, as well as improving the purity and reducing the
risk of contamination during their processing.
One of the more recent and
exciting innovations in material separation is the non-ferrous Eddy
Current Separator and how it is revolutionizing efforts to reduce
waste and damage to the environment by recovering valuable non-ferrous
metals from municipal and industrial refuse.
Sorting and separating ferrous
metals using magnetized systems has been standard practice for many
years. Recovering non-ferrous metals, however, was a labor intensive,
costly and a time consuming exercise, only feasible from bulk materials
like incinerated refuse and fragmentized car scrap. It meant metal
mixes, such as brass, copper, aluminum and steel were relatively
worthless as a mixture and were often landfilled. It was like pouring
money — and vital natural resources — down the drain.
The Eddy Current Separator
is able to separate and recover aluminum and other non-ferrous metals
from household, industrial and incinerated waste, including inert
plastics and other materials. It is able to separate metals from
scrap, and remove metallic particles and contaminants from glass
and other substances. In fact, Eddy Current Separators offer a cost
effective method of recovering up to 95% of valuable material from
rubbish and waste, grading precious metal concentrates for further
processing. It also improves the purity of non-ferrous auto scrap
up to 85-95%, maximizing the speed and efficiency of recovery and
These systems use the latest
and most effective magnetic circuits to produce strong eddy current
forces, which maximizes efficient separation. Also incorporated
are proven design features, such as quick and easy machine adjustments,
single source dependability, and energy efficiency.