中文摘要：

采用机械活化的方法对某金矿尾矿用作水泥混合材进行了试验研究。其研究结果表明：比表面积在一定的范围内,尾矿的活性指数随着尾矿比表面积的增大而提高;当尾矿粉磨至比表面积为400m^2/kg时尾矿的活性指数已达到65%,当尾矿粉磨至比表面积为500m^2/kg后尾矿的活性指数几乎不再发生变化。通过火山灰性试验发现,该金矿尾矿的火山灰性不合格,因此不属于火山灰质混合材;利用电子探针对尾矿水泥净浆微观形貌分析发现,尾矿参与了部分水化反应;通过进一步研究发现,尾矿掺量在20%以内其强度满足42.5R等级水泥强度要求,掺量在30%以内其强度满足32.5R等级水泥要求,其安定性、凝结时间等均符合普通硅酸盐水泥的要求。

英文摘要：

The experiment study on gold tailings used as cement admixture is conducted by mechanical method. The result shows that activity index of the tailings increased with the specific surface area within activation a certain range. When the specific surface area reached about 400 m^2/kg, the activity index reached 65 % , and changed little after 500 m^2/kg. The test of pozzolanicity has been identified unacceptable,the pozzolanic feature of the tailings is unqualified so that they can＇t be used as pozzolanic materials. By the EDS,it is seen in the microscale analysis that the gold tailings partly participate in the hydration reaction. Furthermore, when the tailings were added less than 20 %, cement of 42.5R grade would be prepared. While the addition is less than 30 % ,cement of 32.5R grade would be generated, of which the stability, coagulation time met ordinary Portland cement standards.