Main applications

  • Production of powders and fine sands of limestone and dolomite for glass factories, premixed dry mortars, agglomerated floor tiles agglomerated with cement or resins (0÷3 mm/0÷8 mm)
  • Grinding of clays for production of roof tiles, bricks, extruded floor tiles
  • This machine is designed for contemporary drying and grinding of wet raw materials with moisture content in the range 4-8% (depending on the raw material)
  • Capacity range: 25÷60 ton/hour
  • Llimestone, marble, calcium carbonate, dolomite
    fine powder and sand for production of: premixed dry mortars, terrazzo tiles, animal feed, glass industry
  • Gypsum
    pre-grinding before calcining
  • Plaster
    refining for production of: plaster of Paris, plaster for ceramic moulds, special plasters
  • Clay
    dry grinding for: bricks, roof tiles, dressed floor tiles, abrasives, refractories, ceramic products for recycling in new production
  • Waste of bricks
    red earth for tennis court, chamotte for ceramic bodies
  • Kaolin
    scraping of pellets of washed kaolin
  • Waste of industrial products, such as:
    calcium oxide, hydrated lime, chemical products, horn and nails, petroleum coke, coal, metal alloys

The twin rotor construction of our hammer mills ROTODUE 4M – 4MXP – 4GX – 4GZ offers the following interesting advantages:

  • Double volume of grinding chamber and double surface of the discharge grate, for a given width of the mill. The capacity of the mill and the throughput of hot gaz for drying are, by consequence, increased consistently.
  • The machine can work at high tip speed.
  • The mill can be adapted to many different applications, even with relatively abrasive materials, with proper choice of feed opening position and rotor type.
  • Ideal for production of products minus 0,5 ÷ 3 mm., depending on installation and working conditions.
  • The product shape is well rounded or poliedric.
  • Fine grinding of friable materials of medium hardness and abrasiveness.
  • Contemporary drying and grinding blowing hot gas through the mill.
  • Strong construction and easy maintenance.
Feed inlet mm 300 x 570 300 x 780 300 x 1120
Maximum feed size:
– with disc rotor/swinging hammers mm 40 40 40
– with drum rotor/fixed hammers mm 100 100 100
speed rpm 1000÷1750 1000÷1650 1000÷1650
Requested power kW 2 x 45 ÷ 55 2 x 75 ÷ 90 2 x 90 ÷ 110
Approx capacity ton/h 15÷25 25÷35 40÷60
Weight Kg 5000 7000 10000


The data and characteristics of this table are informative and subject to change without prior notice.