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MagRoll-Single Stage
Initially developed for the diamond industry the MagRoll has huge potential
for use in other mineral processing industries. Many of these industries
will already be using similar technology, but it is expected that the
MagRoll will introduce a new dimension of performance to these industries
as well as enabling some new, or hitherto unsuccessful, applications.
Features and Specifications |
- Fitted with De.Beers’ unique,
high-strength ‘SuperRoll’, constructed of large diameter
rare-earth (Neodymium-Iron-Boron) permanent magnets
- SuperRoll design optimised to suit application requirements using
mathematical modelling techniques
- Material path fully enclosed and a dust extraction point provided
for connection to an external extraction system
- Conveyor belt constructed of durable material and designed to be
self-tracking as well as easy to adjust and replace
- Interchangeable magnetic rolls of different strengths to suit specific
applications
- Available in 250mm and 500mm wide versions, each with optional features
in terms of control philosophy and types of instrumentation
- Exceptionally strong magnetic forces generated by the SuperRoll,
are ideally suited to difficult applications and enable more efficient
separations at higher throughputs than conventional magnetic roll
and drum separators
- Efficient separations achievable over a wide range of particle sizes
from <1mm up to 25mm
- Material, which may be of high value, remains secure within the
machine
- Dust is contained and may be easily extracted from the machine via
a single connection. Dust build-up on the magnet which, over time,
would cause loss of performance and belt tracking problems is minimised
- Long, trouble-free belt life resulting in minimal downtime and low
maintenance costs
- The standard MagRoll frame may be fitted with a low strength Barium
Ferrite ‘scalping’ roll to remove strongly magnetic particles
prior to further treatment by a second MagRoll fitted with a SuperRoll
- Readily customised to suit exact user requirements
A vibrating feeder draws material from a feed hopper and feeds
it at a controlled rate onto a rotating conveyor belt, which passes
over a magnetic head pulley. Non-magnetic material follows a trajectory,
which is uninfluenced by the magnetic pulley’s field, whereas
magnetic material is drawn towards the pulley and discharges with
a different trajectory. A collection hopper fitted with a variable
splitter blade is positioned below the conveyor in order to collect
the discharging material and to divide it into ‘magnetics’
and ‘non-magnetics’ streams. |
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