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.

Double rotor hammer mill type “ROTODUE 4M”, suitable for grinding and drying