... , it main consists of the following parts: material store silo, sand dryer, spiral conveyor, weighing system, hoisting machine, pre-mixing silo, mixing ... .Binders: Cement, hydrated lime, anhydrite, gypsum. 2. Filler: Silica sand, quartz sand, limestone, dolomite, expanded perlite etc. 3. Mineral admixture: Ground granulated ...