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Backers Backers

  • Changeable - mixing unit and second screen deck
  • Mixing component for compounder
  • mixing unit with 6m³ volume, snail, filters, level indicator, dust collection system
  • dust collection system
  • control box and printer for documentation

Screening and mixing machine functionality

These machines were specially developed for road construction and civil engineering: Backers mixing units to stabilize soils with lime, cement or other aggregates.

The screening and mixing process

Coarse screening takes place in the first step: all material fractions that are larger than 60 mm are being removed and the soil is loosened up. Following this, the soil is weighed and blended with the desired percentage of cement, lime and similar. Using the belt scales/force transducers it can be set how high the percentage of the amount to be blended in (1–10 %) should be. The machine equipped with the patented mobile wheel-crawler chassis can be moved in the terrain (crawler chassis) and by means of an articulated truck without special permit during transportation.

Application fields

Stabilized soil can be produced using the screening and mixing machine. Liquid soil can be mixed by adding a further aggregate and water. This excellent construction material is specially suitable for use in road construction and civil engineering, channel construction or also dike construction. The liquid soil is directly driven to the site using existing (concrete) truck mixers that are filled in batch quantities. The batch composition can be printed directly on-site for complete documentation.

Screening and mixing machinery from backers:
  • High mixing performance of more than 200 t/h.
  • Flexibility: Deployable as screening and mixing machine or 3-fractions starscreen.
  • Suitable for screening organic and mineral materials.
  • Simple handling: Replacement of mixing unit and second screen deck in no time.