The crushing

Crushing is the first step of comminution. This task is carried out in two or three stages (primary, secondary and tertiary crushing), mainly in dry way.

Industrial crushers reduce the material from very large pieces or blocks to around 10 mm. They operate on different principles, depending on the characteristics of the material (mechanical resistance, abrasiveness, humidity): by compression/crushing (jaw crusher, rotary crusher, cone crusher or roller crusher) or by impact/percussion (impact crusher or hammer mill).

CTP has the following equipment for testing in batch or continuous circuit:

Type	Materials	Particle size In (d₁₀₀)	Particle size Out (d₅₀)	Max. Capacity
Hammer	Non-abrasive materials	0-125 mm	Screens of 80 mm to 4 mm	1 t/h
Jaw	Hard and abrasive materials	0-200 mm	0-30 mm	1 t/h
		0-80 mm	0-10 mm	100-200 kg/h
		0-50 mm	0-2 mm	100 kg/h
Toothed roller	Non-abrasive materials	0-100 mm	0-15 mm	2-3 t/h
Diamond-point roller	Non-abrasive materials	0-100 mm	0-10 mm	1 t/h
Smooth roller	Non-abrasive materials	0-20 mm	0-5 mm	100 kg/h
Grooved roll	Non-abrasive materials	0-25 mm	0-5 mm	2-3 t/h
Impact	Non-abrasive materials	0-250 mm	0-5 mm	1-2 t/h
Cone	Abrasive materials	0-15 mm	0-2 mm	500 kg/h