本文比较了外掺各种氧化物对高钙生料易烧性的影响规律.以高钙生料为基准,分别掺入2%的Li2O、CuO、TiO2等13种氧化物,煅烧至1300℃和1400℃,测其f-CaO.结果表明:外掺氧化物改善易烧性作用大小排序,在1300℃为CuO>Co2O3>ZnO>Li2O>Cr2O3>PbO>WO3>ZrO2>TiO2>MnO2>MgO>P2O5>BaO>基准样,在1400℃为TiO2>ZrO2>WO3>MnO2>PbO>Co2O3>MgO>基样>ZnO>CrO3>P2O>BaO>CuO>Li2O.煅烧温度条件不同,外掺氧化物对易烧性的作用效果差异很大,以下几种情况值得注意和深入研究:在低温(1300℃)阶段明显改善易烧性,但在高温(1400℃)阶段则不明显或使易烧性变差,如CuO;在低温煅烧阶段改善易烧性不明显,但在高温阶段效果显著,如TiO2;在高温阶段易烧性明显变差,如Li2O.
参考文献
| [1] | G Kskli;G Parissakis;D Bouras .A study on the burnabilityand the phase formation of PC clinker containing Cu oxide[J].Cement and Concrete Research,1996,6(10):1473-1478. |
| [2] | J I Bhatty .Role of minor element in cement manufacture and use,Portland Cement Association[Z].Skokie,IL,USA,1995. |
| [3] | N K Katyal;S C Ahluwalia;R Parkash .Effect of Barium on the formation of tricalcium silicate[J].Cement and Concrete Research,1999,29:1857-1862. |
| [4] | G Kakali;V Kasselouri;G Parissakis .Investigation of the effect of Mo.Nb,Wand Zr oxides on the information of portland cement clinker[J].Cement and Concrete Research,1990,20:131-138. |
| [5] | N.K.Katyal;R.Parkash .Influence of titania on the formation of tricalcium silicate[J].Cement and Concrete Research,1999(3):355-359. |
| [6] | My. Y. Benarchid;A. Diouri;A. Boukhari .Thermal study of chromium-phosphorus-doped tricalcium aluminate[J].Cement and Concrete Research,2001(3):449-454. |
| [7] | R Buchi.原料的性能和制备对生料反应性的影响[A].北京:中国建筑工业出版社,1985:25-62. |
| [8] | 苏达根,黄浪欢,刘艳红.用含钨工业废弃物作矿化剂煅烧水泥熟料[J].华南理工大学学报(自然科学版),2001(10):65-68. |
| [9] | G Kakali;G Parissakis .Investigation of the effect of ZnO on the formation of Portland Cement clinker[J].Cement and Concrete Research,1996,25(01):79-85. |
| [10] | K. Kolovos;S. Tsivilis;G. Kakali .The effect of foreign ions on the reactivity of the CaO-SiO_2-Al_2O_3-Fe_2O_3 system Part II: Cations[J].Cement and Concrete Research,2002(3):463-469. |
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