CAJ | 학술논문

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400 m2／kg时尾矿的活性指数已达到65％，当尾矿粉磨至比表面积为500 m2／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32．5 R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。
채용궤계활화적방법대모금광미광용작수니혼합재진행료시험연구。기연구결과표명：비표면적재일정적범위내，미광적활성지수수착미광비표면적적증대이제고；당미광분마지비표면적위400 m2／kg시미광적활성지수이체도65％，당미광분마지비표면적위500 m2／kg후미광적활성지수궤호불재발생변화。통과화산회성시험발현，해금광미광적화산회성불합격，인차불속우화산회질혼합재；이용전자탐침대미광수니정장미관형모분석발현，미광삼여료부분수화반응；통과진일보연구발현，미광참량재20％이내기강도만족42．5R등급수니강도요구，참량재30％이내기강도만족32．5 R등급수니요구，기안정성、응결시간등균부합보통규산염수니적요구。
The experiment study on gold tailings used as cement admixture is conducted by mechanical activation method.The result shows that activity index of the tailings increased with the specific surface area within a certain range.When the specific surface area reached about 400 m2/kg,the activity index reached 65 %,and changed little after 500 m2/kg.The test of pozzolanicity has been identified unacceptable,the pozzolanic feature of the tailings is un-qualified 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 %,ce-ment of 42.5R grade would be prepared.While the addition is less than 30%,cement of 32.5R grade would be gen-erated,of which the stability,coagulation time met ordinary Portland cement standards.