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It’s a bit rough in glass recycling

magnetic head pulley

MSA was tasked with providing a solution in one of the harshest environments you can imagine – a glass recycling plant.

Glass recycling plants are a highly abrasive and humid environment which requires a high level of maintenance to keep running smoothly.

Along with the wear and oxidization challenges, the tonnage per hour is high meaning the speed of the machinery is quite fast. MSA modified the design of our rare earth magnetic head pulleys to resist oxidisation and include replaceable stainless-steel lagging.

The intense surface strength and unique circuitry allows our magnetic head pulleys to keep up with the speed of the plant and still outperform any other metal separation option on the market.

magnetic head pulley

“Waglass has the contract to process all of the glass from the WA Container Deposit Scheme. The Waglass Plant at Bassendean in WA is a highly specialised plant containing over 60 items of equipment. The plant processes and sorts all of the glass collected from WA CDS into three colours of glass which is containerised and shipped to Orora’s bottle making facility in SA for direct feed to their furnaces.

There are strict quality standards required by Orora for the product we produce. Amongst them is that ferrous metal levels must be below 0.1g/100kg. To achieve this standard a magnetic head roller was purchased from MSA Magnetics in September 2020. The roller has been operating in our plant for the last 12 months. During that period we have extracted several tonnes of ferrous metal using this roller, and at no point have we found any ferrous metal in our finished product.

We have since purchased a second unit from MSA in case of breakdown, but to date have had no reason to use it.

We have no hesitation in recommending MSA regarding the quality of their products and service.” – Peter Harkins, Managing Director at Waglass

MSA Magnetics – Your Source For Force

Are you aware there are deep field and shallow field Lifting Magnets available?

Deep field (Passive Shunting) Lifting Magnets have been used for many decades in Australia. In the last ten years shallow field (Active Shunting) Lifting Magnets have been gaining in Popularity.

To understand why we need to look at the differences and what that means in the workplace.

Deep field magnets are generally durable robust pieces of equipment, but many people are not aware that they will only lift their advertised capacity at the depth of their magnetic field.

This depth varies between sizes. An average PML 500kg magnet has a 40mm deep field. This means it is only rated to lift 500kg if the material you are handling is 40mm thick. If the material is 20mm thick this 500kg magnet is rated to lift 350kg.  A 1-tonne deep field magnet typically has a 60mm deep field, so on 20mm material thickness, it is rated to lift 350kg which is the same as a PML 500kg magnet.

A shallow field magnet rated to lift 400kg has a 12.7mm deep field so it can lift 400kg of 12.7mm material. When you are handling 20mm plate it is still rated to lift 400kg.

Interestingly, most deep field magnets are not rated to lift material less than 10mm thick while many shallow field magnets are rated on material as thin as 0.5mm thick.

So, what that means in the workplace when you are using deep field magnets, is there is more potential to mismatch the magnet to the load.

A mismatch like using a 1-tonne PML with a 60mm field to lift 15mm plate will result in the lever being very hard to actuate and very hard to turn off. The lever will be very forceful on release resulting in a risk of wrist injuries.

Furthermore, a calculation is required by the operator to ensure the magnet is rated to lift the material at the given thickness.

Using a shallow field magnet on material from 0.5mm to 25mm thick will ensure that the levers actuate in a gentle manner, reducing potential wrist injuries while reducing the risk of operator error due to misunderstanding their magnets capacity on various thickness’s.

At MSA we supply both types and are looking forward to offering advice on which type suits your requirements.

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