Apparatus for crushing brittle material for comminution
AssigneeKrupp Polysius AG
InventorsManfred Muller, Gerhard Gudat
Life of this patent
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Abstract
The invention relates to apparatus for crushing brittle material for comminution which is subjected to individual grain crushing and material bed crushing in a roll crusher at high pressure and with agglomerates being formed, these agglomerates being loosened in the sifter with the aid of a separate arrangement and removed from the crushing system. In this way a crushing stage which is provided for further crushing has its load significantly reduced and as a result the apparatus is rendered considerably more economical.
Claims10
Apparatus for crushing brittle material comprising a roll crusher in which such material is subjected to individual grain crushing and material bed crushing at high pressure causing the formation of agglomerates;
- means for supplying said crusher with said material;
- a sifter downstream from said crusher;
- means for delivering crushed and agglomerated material from said crusher to said sifter;
- a rotary distributor mounted in said sifter in a position to receive material delivered thereto from said crusher;
- means for rotating said distributor at a speed to cause material thereon to move along a path radially outwardly of said distributor for discharge therefrom;
- impact means mounted in the path of movement of said material for engagement thereby to disagglomerate said material;
- means for establishing an airstream moving upwardly past said distributor at a velocity to entrain and carry upwardly relative fine disagglomerated material;
- means for receiving relatively coarse material that is incapable of being entrained in said air stream;
- rotary sifting means mounted above said distributor and through which said entrained material may pass;
- and means for rotating said sifting means independently of said distributor.
Apparatus for crushing brittle material comprising a roll crusher in which such material is subjected to individual grain crushing and material bed crushing at high pressure causing the formation of agglomerates;
- means for supplying said crusher with said material;
- a sifter downstream from said crusher;
- means for delivering crushed and agglomerated material from said crusher to said sifter;
- a rotary distributor mounted in said sifter in a position to receive material delivered thereto from said crusher;
- means for rotating said distributor at a speed to cause material thereon to move along a path radially outward of said distributor for discharge therefrom;
- first impact means carried by said distributor in the path of movement of said material for engagement thereby to disagglomerate said material;
- rotary, second impact means mounted radially outward of said distributor and in the path of material discharged from said distributor for engagement by such material;
- means for rotating said second impact means;
- and means for establishing an airstream moving upwardly past said distributor and said second impact means at a velocity to entrain and carry upwardly into said sifter relatively fine disagglomerated material.
Dependencies are inferred from the claim text.