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由北京有色冶金设计研究总院和金川有色金属公司共同承担的国家“七五”攻关课题——全尾砂膏体泵送充填工艺及设备研究已于1991年上半年在金川二矿区试验成功、并已通过国家鉴定。从小型试验、室内试验、半工业试验和井下工业试验,完成了“七五”攻关任务,达到并超过了攻关任务所规定的各项技术经济指标;全尾砂利用率大于95%,充填体抗压强度大于4MPa,水泥单耗降低35%(全尾砂+水泥)～50%(全尾砂+细石+水泥),充填成本
By the Beijing Nonferrous Metallurgical Design and Research Institute and Jinchuan Nonferrous Metals companies bear the national “Seventh Five-Year” research topic - full tailings paste pump filling process and equipment research in the first half of 1991 in Jinchuan two successful trial, And has passed the national appraisal. From the small-scale test, indoor test, semi-industrial test and downhole industrial test, the “Seventh Five-Year” research task has been completed and all the technical and economic indicators stipulated in the research task have been met and exceeded. The utilization rate of total tailings sand is more than 95% Compressive strength is greater than 4MPa, cement consumption reduced 35% (Tailing + cement) ~ 50% (Tailing + fine stone + cement), filling costs