LUM Ultrafine Vertical Roller Mill. Input Size 0-10mm. Capacity 5-18TPH. Material Limestone, calcite, dolomite, petroleum coal, gypsum, barite, marble, talc, coal powder, etc. LUM ultrafine vertical roller mill is made as the foundation of LM vertical mill , which is SBM introduce the Germany ultrafine roll mill grinding technology.Pfeiffer as early as 2005, was applied in Kembla. In this procedure, the gypsum is first calcined in separate hammer mill and then fed to the vertical roller mill. This allows the properties of the cement to be adjusted in an optimum way through the gypsum component with comparably little effort.