Crushing and grinding comminution equipment

Diamond Sapphire Topaz Quartz Feldspar Apatite Fluorspar Calcite Gypsum Talc 

Material class no Material classification Typical materials in class Suitable equipment for product size Down to 5 mesh Between 5 and 300 mesh classes Ixss than 300 mesh Remarks 

1 Hard and tough Mica Scrap and powdered metals Jaw crushers Gyratory crushers Cone crushers Autogeneous mills Ball, pebble, rod and cone mills Tube mills Vibration mills Ball, pebble and cone mills Tube mills Vibration and vibro-energy mills Fluid-energy mills Moh s hardness 5-10, but includes other tough materials of lower hardness 

2 Hard, abrasive Coke, quartz, Jaw crushers Ball, pebble, Ball, pebble and Moh s hardness 

Jaw crushers Gyratory crushers Cone crushers Autogeneous mills 

Jaw crushers Gyratory crushers Roll crushers Edge runner mills Impact breakers Autogeneous mills Cone crushers 

Tube mills Ring roll mills Ring ball mills Roller mills Peg and disc mills Cage mills Impact breakers Vibration mills 

pebble and cone mills Tube mills Vibration and vibro-energy mills 

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Comminution is one of the most inefficient unit operations from the viewpoint of energy consumption. Continuous crushing and grinding equipment can... 

Ore beneficiation consists of two main steps comminution and concentration. Comminution is first performed by crushing. Equipment in use comprises jaw, cone, or impact crushers working mostly in closed circuits with vibratory screens. The second step in comminution is grinding, which is undertaken in rod or ball mills working in closed circuits with classifiers. 

Breaking is the term applied to size operations on large material (say +75 mm) and crushing to particle size reduction below 75 mm the term grinding covers the size reduction of material to below about 6 mm. However, these terms are loosely employed. A general term for all equipment is size reduction equipment, and because the term comminution means size reduction, another general term for the equipment is comminution equipment. 

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