Calumite as an Abrasive

The product is a light in colour Calcium Silicate synthetic mineral abrasive produced from granulating Blast Furnace slag in the ironmaking process.

Size Range:


Applications include:

  • Cleaning of ornate buildings (stone, masonry & concrete) whilst preserving detailed features
  • Cleaning wood for surface preparation & rejuvenation purposes, whilst minimising grain damage
  • Surface Preparation – removal of rust, paint, dirt, mill scale etc.
  • Masonry renovation
  • Graffiti Removal

Examples in use include buildings such as St Pauls Cathedral.


  • Aesthetically pleasing due to the light in colour particles, producing an off-white dust
  • Rapid cleaning due to the angular particles
  • No free Respirable Crystalline Silica (RCS)

Material Properties:

Density 2.6-3.0 g/cm3 Dust Levels High
Bulk Density 1.3-1.4 g/cm3 Shape Sharp & Angular
Hardness 5 – 6 Mohs Conductivity 10 mS/ m
Friability High Chloride <0.0007%
Recyclability None Free Silica < 0.1%
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