New “drop test” benefits rotary breaker customers

New “drop test” benefits rotary breaker customers

A new service offering called a “Drop Test” has recently been launched by Osborn to ensure that rotary breaker customers get the ideal machine for their requirements. Product specialist Etienne Swanepoel explains that this test is used to accurately size the rotary breaker needed for customers’ specific applications, based on coal hardness.

He outlines what the test entails.

“Sample lumps of coal and stone approximately 300mm in size are elevated and dropped from a predetermined height onto a rotary breaker screen plate. Broken material is then screened and each fraction is weighed.  Material bigger than the product size is dropped again, and the screened undersize is discarded.

"This process is repeated until all material is smaller than product size. Finally, a calculation is done to determine the required length of the rotary breaker drum.”