We highly recomend the high-concentration cementing filling technology of the tailings snad. In the preparation of aggregates, the advanced thickening process is adopted to thicken the tailing sand. The tailings sand is processed and produced into a special cementing material according to its properties. The filling test provides the mine with the optimum ratio of lime to sand. In the process design, we will provide customers with reliable, practical and economical design solutions based on actual conditions on site. The completed projects includes: Henan Angang Group Wuyang Iron Mine, Zhaojin Group Xiadian Gold Mine, Canzhuang Gold Mine and Yingezhuang Gold Mine, Shanjin Group Laixi Mining; Wukuang Group Luzhong Mining Xiaoguanzhuang Iron Mine, Gangli Iron Mine; Linkuang Group Huibaoling Iron Mine (Phase II); Zhongjin Group Jinshan Gold Mine.