Metal filter system devised for chocolate and biscuits manufacturers

Netherlands business Goudsmit Magnetic Systems has devised a metal filter solution for the confectionery sector, aimed as business operating within decoration of cakes, biscuits and yoghurt-based products.

As the company explained, its equipment has been designed to work with chocolate chips and granules that could potentially  contain tiny pieces of metal less than one mm in diameter, which it noted is a relatively common problem within chocolate production.

In creating its magnetic solution, the  company had been tasked with filter the pieces containing metal out of the product flow, without loss of product. Consequently, it developed its high gradient separator with a strong magnetic conveyor roller, specifically for the food industry.

With this system, the business achieved a strong degree of separation efficiency, not just for iron particles, but also for weakly magnetic stainless steel particles, such as AISI 304 and AISI 316.

According to the company, the high gradient separator is more effective than a free-fall magnetic separator, as with the latter you have to slow down the metal particle before you can capture it.

In addition to chocolate, the magnetic separator is also suitable for other dry, granular products, such as herbs and spices. The process itself is considered comparatively simple. A vibrating chute feeds the chocolate flakes and pellets onto the conveyor belt and distributes the products in a single layer over the belt.

The conveyor belt turns around the magnetic roller that captures and carries away the metal-containing product. The clean product falls directly into the packaging machine. Cleaning Hygiene is of the utmost importance, especially in the food industry. This was keenly considered while designing the HG separator. A quick release system makes removal and replacement of the conveyor belt quick and easy. The special open construction and covers that easily swing out of the way make it easy to clean.

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