Introduction to Rock and Soil Abrasivity Index (RSAI ..., 2019-8-15 · The determination of Rock and Soil Abrasivity Index (RSAI) utilizing Eq. can be achieved by using a testing setup schematically shown in Fig. 1. When the blade with a certain pitch angle rotates in soil or crushed rock medium, it creates soil compaction underThe blade/soil interaction also creates a frictional torque on the test chamber which is measured by a torquemeter.High Gradient Magnetic Separator | HGMS |, 2019-8-15 · HGMS has the advantages of large enrichment ratios, strong adaptability to feedstock concentration, concentration and fluctuation, reliable work, convenient operation and maintenance. The magnetic system of the high gradient magnetic separator is made of high-quality ferrite material or composited with rare earth magnetic steel..