天然砂资源日趋紧张,而且质量不断下降。尾矿资源存储量巨大,有效利用尾矿砂替代天然砂既可以解决天然砂资源紧张问题,而且符合环保利废的国家政策。本文主要通过试验,将北京密云铁尾矿粗砂和细砂按照一定比例复配,完全替代天然砂配制混凝土,而且性能优于天然砂配制的混凝土,并且通过与厂家沟通,改进生产工艺,扩大尾矿利用范围,实现了尾矿砂在混凝土生产中的全面使用,具有经济和社会效益。 Natural sand resources are increasingly tense, and the quality is declining. Large reserves of tailings resources, the effective use of tailings sand instead of natural sand can solve the problem of natural sand resources, but also in line with national policy of environmental protection and waste. This paper mainly through experiments, the Beijing Miyun iron tailings grit and fine sand in accordance with a certain proportion of complex, completely replace the natural sand preparation of concrete, and the performance is better than natural sand preparation of concrete, and through communication with manufacturers to improve production technology and expand Tailings utilization range, to achieve the full use of tailings sand in concrete production, with economic and social benefits.