CANS & BRIKS SORTING EQUIPMENT0 pages

CANS & BRIKS1 SORTING EQUIPMENT by EDDY CURRENT (R-SLB)
INTRODUCTION
Both iron and non-iron metals make up one of the groups of materials to be more present in waste
reduction, since they involve a high recovery. Aluminium should be considered the most important
noniron metal as it is highly present in our daily lives (cans, boxes, coffee makers, automobiles, etc.)
and can be reprocessed innumerable times. Into Urban Waste Treatment process, CANS & BRIKS1 are
the most representative materials made of aluminium. Aware of the serious environmental problem,
REGULATOR-CETRISA has developed a complete line of ®CANS&BRIKS Sorting Equipment by Eddy
Currents (R-SLB), in order to get two completely separated fractions.
PHYSICAL PRINCIPLE
The physical principle of the Eddy currents is based on an alternative magnetic field, meaning, in a
magnetic field where the North and South Poles alternate.
Let's imagine a simple magnet. The lines of force that generate the magnetic field close from one
magnetic pole to the other (N-S). If we place an iron metal within the lines of force, these will
provoke their attraction towards the magnet. On the contrary, if we place a non-iron metal within
the lines of force, these will not produce any effect on the non-iron metal.
However, if the non-iron metal is subject to an alternative magnetic field, internal currents will be
created that are called Eddy Currents. These Eddy Currents generate a magnetic field that opposes
the magnetic field generated by the magnet. This strong opposition of magnetic fields provokes
repulsion between them and therefore the non-iron metal will be literally thrown off its natural path,
being separated from the rest of the materials.
OPERATION
Thanks to a previous Eddy Current
Separator (R-SPM), cans and briks are
altogether separated from the rest of
materials.After that, whole cans and
briks are processed by the
®CANS&BRIKS Sorting Equipment (RSLB)
-Regulator-Cetrisa patented
machinery-. When both, cans and
briks reach the head roller, which has
been especially designed for
processing these materials, an
alternative magnetic field provokes that cans go through an effect of repulsion and jump a certain
distance ahead of the drum, while briks are not influenced and follow the natural parabolic falling
path.
®CANS&BRIKS Sorting Equipment (R-SLB) has a conveyor belt that can handle large volumes of
processed material. A robust metallic structure is the support for two rollers: the pulling roller, a belt
drive that moves the conveyor belt at adequate speed, and the head roller, or Inductor Drum,
responsible for generating the Eddy Currents. To obtain a high alternation of magnetic poles, the
1 Brik: Package very used for beverages and sauces into the food industry. Carton+aluminium+plastic complex made of.