Embedded?
normal screening will typically not be a fit for this type of proces
screening by size......will not help here.
...............
magnetic will or may pickup the piece with the metal embedded and pull both metal and resin out.
cryogentics.......may be an interesting treatment.....to harden.....then impact .........and the metal will automatically release itself from the resin and allow separation.
GEORGE BAKER
www.assinck.com ■
Metal Detection
can be head pulley type..........metal sticks to belt at head pulley rolls over and around turn of the pulley and releases onto a deflector chute.
cross belt style........picks up on a magnetic belt at 90 degree angle over the travelling conveyor. BED DEPTH of material is critical to efficiency of the mag.
GB ■
Metal Detection
The previous two replies refer to magnetic separation which is good for ferrous metals, but not non-ferrous metals, i.e., stainless, copper, alulminum, etc. There are many types of magnets that can be effective to remove unwanted ferrous.
For metal detection there are several types for your application. Installing an in-line unit, that can detect AND REJECT the metal is available by several manufacturers, including our company. These are usually installed in a pipeline/chute arrangement. And can also be suitable within the throat of the hopper, but not at the top.
All metal detectors from major reliable manufacturers come with manuals for installation, operation, maintenance and calibration.
The type detectors that are installed in-line and reject are ideal for low to moderate volumes of material being throughput. As you can imagine, there will be a loss of of processed material during the rejection process. How much depends on the size of the metal being rejected, the frequency and the size of the pipe/chute. See photo attached.
In-line detectors are usually used early in the process - for protection of processing machinery. Conveyor designed detectors are usually used in the packaging area to improve outgoing product quality. Let us know if we can be of service.
Marshall Gralnick
Magnetics Division, Global Equipment
+1-561-750-8662
info@globalmagnetics.com
www.globalmagnetics.com
Attachments
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Metal Detection for Powder Processing
We are handling granulated and fine powders. Please assist us with the following:
1. What are the industry standards, if any, for metal detection in powder processing?
2. For in-line (attached to hopper throat) metal detection :
2.1 how do you install, calibrate and maintain?
2.2 what is the normal procedure/industry practice in the event of metal being detected? How much of the hopper load is taken out?
2. Between in-line (attached to hopper throat) and conveyor designs, which are mostly used in the industry? ■