in this paper, iron ore sample from the chadormalu was investigated to determine some comminution properties. chadormalu deposit is one of the largest iron ore mine in iran, which is located in yazd province. the representative ore sample contained 57%fe, 0.9%p and 0.17%s. the sample was crushed; afterward, it was ground in various grinding times according to the bond ball mill approach to spec...

It is a well-known fact that the value of Bond work index (wi) for given ore varies along with grinding size. In this study, variability bysis carried out standard grindability tests on different critical metal ores (W, Ta), ranging from coarse (rod mills) to fine (ball mills). The relationship between wi and size did not show clear correlation, while (gpr) showed robust fitting in all cases qu...

INTRODUCTION Two great changes in developed countries are taking place: populations are ageing and becoming increasingly overweight. Combination of these factors with shift work is a risk factor for work ability and mental workload that are dynamic processes which change greatly throughout an individual's work life. The aim of this study was to investigate mental workload and work ability in te...

El modelamiento geometalúrgico multidisciplinario de la cadena valor depende las áreas geología, mina y metalurgia, razón por cual es suma importancia en estimación los recursos del yacimiento. objetivo este estudio determinar una metodología variables no aditivas como el Work Index. Esta se fundamenta que existen geometalúrgicas promedio valores conforman corresponde a media aritmética dominio...