山东省招远市河东金矿利用本矿选金尾砂作原料,成功地试制出符合国家标准要求的蒸压灰砂砖。 金尾砂的化学成分主要是SiO_2,其含量超过70％。用88％的金尾砂,配有12％的生石灰,再加入少量添加剂,经搅拌,坯泥陈化后制坯成型,再经过8h蒸压养护,出釜后的灰砂砖 Hedong Gold Mine in Zhaoyuan City, Shandong Province used gold ore tailings from the mine as raw materials to successfully prototype autoclaved lime sand bricks that meet the requirements of national standards. The chemical composition of gold tailings is mainly SiO 2 and its content exceeds 70%. With 88% gold tailings, with 12% quicklime, then add a small amount of additives, after stirring, the aging of the slurries forming, and then after 8h autoclave curing, the lime sand bricks after the kettle