Abstract Nonuniform slot air bearing (NSAB) systems have two major advantages, the external supply and restrictor design, their inherent multidirectional supporting forces stiffness that provide excellent rotational stability. However, NSAB are prone to vibration from nonperiodic or chaotic motion caused by nonlinear pressure distribution within gas film, imbalance, simply inappropriate design....

The roasting of sulfide ores and concentrates is one the most important steps in pyrometallurgical metal production from primary raw materials, due to necessity excess sulfur removal, present virgin material. Pentlandite main sources for nickel production. knowledge its reaction mechanism, products distribution during oxidation kinetics optimizing process. Raw pentlandite-bearing ore Levack min...

Abstract This research work proposes the conventional and novel eddy current damping systems (CECDS & NECDS) for an optimized multi-layer radial permanent magnet bearing, which is axially magnetized. Firstly, design optimization of a bearing are carried out by adopting general procedure maximum force stiffness selecting stator outer diameter, air gap, length as parameters. The concerning st...