which screen do I need?

Sort by size only
Can separate recyclables efficiently up to 20 tph, MSW up to 60tph
Are excellent primary screens for commingled recyclables, MSW, skip waste, commercial waste, industrial waste and C&D waste because they never block, bind or stop when processing harsh, oversize of dirty materials
Have no wear parts and so lower operating costs, especially when processing harsh materials like glass
Have a smooth screening drum that has nothing around which materials can wrap making trommels consistently efficient and low maintenance.
Screen at the same efficiency when processing materials compacted in RCVs (refuse collection vehicles) because they sort by size not shape. Trommels therefore san separate flattened plastic bottles from newspapers, which is a crucial requirement for the primary screen in a commingled MRF
Require no daily maintenance. This reduces their operating costs against other screens
Need cleaning once a week. This reduces their operating costs against other screens
Remove the fines fraction from a waste stream
Can sort materials in up to four sizes
Usually require more floor space than a disc screen or a ballistic separator

For more on information on trommels, click here

Sort by shape and size
Can separate papers efficiently up to 25tph and recyclables at 12tph
Separate card easily and automatically from other materials
Are much less efficient, when used as the primary screen, in processing materials that have been compacted in RVCs (refuse collection vehicles). This is because disc screens sort by shape as well as size and therefore struggles to separate flattened plastic bottles from the flat papers and card
Make an excellent polishing, or secondary, screen for pre-separated newspapers, mixed papers or card fractions
Are the best screen for sorting all-fibre materials e.g. sorting commingled papers and card within a Fibre MRF
Remove the fines fraction from a waste stream
All-round good-choice screen for secondary screening
Take up less floor space than a trommel
Require more maintenance than other screens when processing materials that contain ‘wrappable’ items e.g. carrier bags, cables, textiles, tape etc. The ‘wrapped’ items build up around the shafts, causing the discs to loose their screening efficiency and so require one hour’s maintenance at the end of every shift to remain efficient
Have high wear parts – namely, the discs – especially when used with commingled materials or materials with a glass content

For more on information on disc screens, click here

Sort by shape and weight e.g. separate 2D flats/lights (papers) from 3D rounds/heavies (containers)
Can separate recyclables efficiently up to 6tph
Are most efficient processing low to medium tonnages i.e. 6 tph and underMore screens can be stacked on top of each other to boost throughput beyond 6tph but the falling materials from upper decks interfere with the screening process on lower decks, thus reducing the overall screening efficiency/end product quality. Stacking also increases the machine’s cost and its power requirements
Work best with recyclables the 95% pure at input and with no oversize containers
Are useful polishing, or secondary, screens for containers that have already been pre-separated in a trommel in the 180mm cut
Are much less efficient, when used as the primary screen, in processing materials that have been compacted in RVCs (refuse collection vehicles). This is because ballistic separators sort by shape as well as weight and therefore struggles to separate light, flattened plastic bottles from the light, flat papers and card
Take up less floor space than a trommel
Require no daily maintenance. This reduces their operating costs against other screens
Need cleaning once a week. This reduces their operating costs against other screens
Remove the fines fraction from a waste stream using perforated decks
All-round good-choice screen for secondary screening

For more on information on ballistic separators, click here