... )capacity: 4.5-8T/H 3)Size adjustable Vertical Roller Mill For Mineral Industry HGM series Alunite mill is the new type ... , carbon black, diatomite, graphite, alunite, fluorite, potassium feldspar, phosphorite, pigment, up to 200 kinds. The granularity (or final size) of the ... unqualified particle size will fall and return to the mill for being reground while the qualified particle size mixed with air ...