Influence of the processing variables on the performance of MAGCLA™

Influence of the processing variables on the performance of MAGCLA™: friction coefficient and radius of the particles

“…As detailed in our previous work [13], in order to determine the influence of each processing variable on the outcomes of the magnetic classification and separation process, the variable under study was varied while keeping constant all the other parameters (an approximation considered reasonable by the reasons pointed out in [13]).…”

“…The processing variables considered in this study are the friction coefficient acting in the upward/downward direction, µ, and the radius of the particles, r part . All the remaining parameters were considered constant, and their values are presented in [13] and in table 1. The friction coefficient in the rotational direction (µ θ ) was always considered above the limiting value predicted by the theory [15,16].…”

“…The friction coefficient in the rotational direction (µ θ ) was always considered above the limiting value predicted by the theory [15,16]. As before [13], a safety factor was introduced in our calculations, and thus the minimum radius, until which the 'gluing' condition must be maintained, was increased by an extra 5% relative to the value of the lift-off radius (r lv ).…”

“…As previously [13], the optimization-goal for the magnetic particles was the separation and classification of the 100% pure wolframite particles present in the feed. The general optimization-goal, although varying from case to case, was the separation and classification of the largest possible spectrum of magnetic susceptibilities.…”

“…A large-scale prototype of the device is being currently constructed for testing [10]. Detailed descriptions of the new apparatus' working principles and its design can be found in [5,6,8,[11][12][13] and its supporting theory-concerning the equations of movement, modelling and limiting conditions of operation-is described in previous works [11,[14][15][16], regarding its application to minerals processing for dry mode and rotating trunk operation.…”