Put the sand or fly-ash with water into a ball mill to produce sand slurry. Other dry materials (lime, cement, gypsum & additives) are transported to the silos located in the mixing tower. After mixing 3~4mins, using automatic scale system to do with the aluminum powder for maximum safety and dosing precision and then continue mixing 40s. Once weighed and dosed, the mixer ensures perfectly homogeneous distribution of raw materials in the mix. Once using the pouring mixer to cast the slurry into the freshly mould cleaned and oiled, the mixer is vibrated to eliminate air pockets to ensure the quality of end products.The whole cycle is 5~7min.