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 industry.
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
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 increasing
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.