Study of the influence of time and solids load on the grinding of dolomytic sand

MARIANA VAZQUEZ; ANTONELA DI SALVO; ANDRES PETIT ; CECILIA PAULO; OSCAR CABRERA

Río de Janeiro

Congreso; X Encontro Técnico de Materiais e Química Rio de Janeiro; 2019

this work address dolomitic sand grinding tests, varying the load of material (2kg and 3.5kg)and the residence time in the equipment (30min and 120min) in order to know its influence on theparticle cutting diameter of 50% (d50). A pilot scale ball mill and dolomytic sand from a quarry ofBuenos Aires?s province was used for the tests. To study the influence of the parameters, anexperimental design was carried out with a factorial model 22 and the results were analyzed throughthe analysis of variance (ANOVA). The results obtained demonstrate a strong influence of the grindingtime in the reduction of the cutting diameter d50 of the particles, and not significant differences in thesame parameter varying the load of the material to be ground. The present study represents anadvance in the knowledge and modeling of grinding processes and classification of particulatematerial through sustainable processes.