CAJ | 학술논문

研究以铅锌尾矿为水泥原料，设计不同尾矿掺量的配方分别在1350℃下煅烧制备硅酸盐水泥熟料.采用甘油酒精法分析生料的易烧性，根据《水泥胶砂强度检测方法（ISO法）》测量水泥各龄期的抗压、抗折强度，用XRD研究了熟料的矿物组成，用SEM分析了矿物的晶体形貌.试验结果表明：当铅锌尾矿掺量为12.25%时，熟料中f-CaO含量最低，为0.07%.当铅锌尾矿掺量为12.25%~16%时，水泥各龄期强度均超过GB175-2007中规定的42.5标准水泥，其中铅锌尾矿掺量为12.25%时，3 d、28 d抗压强度分别为21.8 MPa、51.3 MPa.掺入铅锌尾矿后，熟料主要矿物为C3S，矿物形成良好.
연구이연자미광위수니원료，설계불동미광참량적배방분별재1350℃하단소제비규산염수니숙료.채용감유주정법분석생료적역소성，근거《수니효사강도검측방법（ISO법）》측량수니각령기적항압、항절강도，용XRD연구료숙료적광물조성，용SEM분석료광물적정체형모.시험결과표명：당연자미광참량위12.25%시，숙료중f-CaO함량최저，위0.07%.당연자미광참량위12.25%~16%시，수니각령기강도균초과GB175-2007중규정적42.5표준수니，기중연자미광참량위12.25%시，3 d、28 d항압강도분별위21.8 MPa、51.3 MPa.참입연자미광후，숙료주요광물위C3S，광물형성량호.
The paper mainly studies the Portland cement clinker prepared by using lead-zinc tailings as raw material, under the condition of different tailings dosages and the same temperature at 1 350 ℃. The f-CaO content is tested by the glycerol alcohol method and the compressive strength and flexural strength are measured according to cement mortar strength detection method (ISO). Phase composition, chemical composition and microstructure of clinkers are characterized by using XRD and SEM. The results show that the f-CaO content is at its lowest of 0.07 % when the dosage of lead-zinc tailings is 12.25 %. The cement strength at various ages exceed the requirement of 42.5 standard cement in accordance with GB175-2007 when the content of lead-zinc tailings is between 12.25 % and 16 %. And when the content of lead-zinc tailings is 12.25 %, the compressive strengths at 3 days and 28 days are 21.8 MPa and 51.3 MPa, respectively. After mixing proper content of lead-zinc tailings, the main clinker mineral is C 3S with silicate crystals well formed.