高钙煤矸石砌块的开发和生产何劲波（徐州市墙改办公室）徐州市地处矿区，煤矸石资源丰富，市区周围大大小小有几十座煤歼石山，占用了大量土地，污染环境，成为一大公害。徐州市墙改办公室、新型墙体材料科学研究所、徐州矿务局卧牛矿，按照充分利用工业废渣、保护土地、... Development and production of high-calcium coal gangue blocks He Jinbo (Xuzhou Office of Wall Reform) Xuzhou City is located in the mining area. Coal gangue resources are abundant. There are dozens of coal gangue mountains around the city, occupying large amounts of land and polluting the environment. Become a major public hazard. Xuzhou City Wall Reform Office, New Wall Materials Science Research Institute, Xuzhou Mining Bureau Wo Niu Mine, in accordance with full use of industrial waste residue, land protection,...