Description

Vinci Technologies offers two dedicated systems for evaluating the attrition and abrasion resistance of granular catalysts and adsorbents. These RTD and add-on RTT units are designed to assess the mechanical durability of materials under controlled and repeatable conditions. Both systems allow customization of test parameters and adjustment of the fines size collected after testing, enabling accurate simulation of handling and operating stresses encountered in industrial processes.


The ASTM D4058-96 – Rotating Drum method applies more severe mechanical stress. A granular catalyst or adsorbent sample is placed in a rotating cylindrical drum operated at 60 ± 5 rpm for 30 minutes. Fines generated by attrition and abrasion are collected using an ASTM No. 20 sieve (0.85 mm aperture). Attrition loss is calculated by comparing the initial sample mass with the retained residue.


The Spence Method – Rotating Tube evaluates attrition under mild mechanical stress. Catalyst samples of up to 25 g each are loaded into cylindrical metal tubes mounted on a rotating frame. The frame rotates at 25 rpm for one hour, after which the samples are recovered and sieved. The sieve aperture is set to two-thirds of the smallest granule size, resulting in a fines fraction larger than that obtained with ASTM methods.