The crush strength is the resistance of a solid to compression, a property of paramount importance not only for industrial catalysts, but also for ceramics, pharmaceutical tablets and many other solid materials. In the case of catalysts it is noteworthy that many plant shutdowns occur due to mechanical failure of the catalyst (and not due to its loss of activity).
ImageCRUSH-BK, fully compliant with ASTM standards D4179, D6175 and D7084 (on Crush-BK 500Kg), is an instrument for measuring the crush strength of solid materials having regular, or almost regular, geometrical shape (like spheres, cylinders, rings and similar). Their size can vary in the range 1 – 20mm. CRUSH-BK is based on a dynamometer measuring the force progressively applied to the solid sample during the advancement of a piston. The force applied increases until the solid breaks and collapses into small pieces and, eventually, powder. The corresponding value of the collapsing force is defined as crush strength. When the material is composed of irregular particles, the measurement of the so-called ‘single pellet’ crush strength cannot be performed, but the ‘bulk’ crush strength must be determined instead. CRUSH-BK allows to make both single pellet and bulk measurements with the same instrument and in its standard configurations features a maximum load of either 300Kg, or 500Kg (different loads are available on request).
CRUSH-SP, applying much lower loads (30 kg max, different loads available on request), is recommended when bulk measurements are not required and the pellets under examination are not very resistant.
Both CRUSH-BK and CRUSH-SP feature a digital display, providing the crush strength in Newton, and an exit for a 30 mV recorder, where the shape of the crush peak can be observed.
The maximum load applicable of CRUSH-BK and CRUSH SP can vary according to customer’s requirements (Ma.Tec.’s specialists can assist customers in the selection of the most suitable instrument).
CRUSH-BK/PC and CRUSH-SP/PC are the most advanced configurations of the Crush series instruments, equipped with a USB 2.0 PC connection and a data-treatment software.
The whole CRUSH series is compliant with CE specifications.