Recently added to the Hammel recycling product line, the MMS 150 DK (MMS stands for “Mobile Metal Sorter”) is designed to be used in combination with a VB 950 DK Hammel primary shredder. The VB 950 DK is ideal for pre-shredding scrap and cars, reducing material to an average piece-size of about eight-inch minus. This material is then sorted to the desired fraction by the Mobile Metal Sorter.
In the MMS, material first goes over a vibratory screen which separates the fraction of six-inch minus from the oversized pieces, which are discharged off the end of the unit to be re-shredded. The six-inch minus material falls through a screen onto a conveyor and is taken to a drum magnet that separates out the desired FE end material. Any remaining contaminants can then be picked out manually from the discharge conveyor off the drum magnet. All of the remaining material not picked up by the drum magnet is discharged to the opposite side and goes straight into a Steinert eddy current separator.
This further separates the material into a fraction containing nonferrous metals such as aluminum and copper from any non-metallic material such as plastic or fabrics. The oversize material that came off the screen in the first step is then taken back into the shredder to go through the process a second time.
According to Hammel, oversize material reaches almost zero after the second run, and these units use a drum magnet instead of an over-belt magnet to achieve a higher surface area, less wear and tear on the conveyor, and better FE separation. Currently, the MMS metal screen is available as a mobile version only.
Hammel North America
www.hammelny.com
