论文部分内容阅读
利用X射线衍射和等离子电感耦合等离子发射光谱研究了烧成温度、烧成气氛、淬冷开始温度等参数对实验室熟料中阿利特的多晶转变和Al3+,Fe3+,Mg2+等主要杂质离子固溶量的影响。随煅烧温度升高,阿利特对称性升高,不掺杂熟料中阿利特晶型从MⅠ转变为MⅠ和MⅢ型的混合体;掺杂熟料中阿利特晶型从MⅠ转变为M和R型混合体。氧化气氛烧成熟料中阿利特的对称性高于还原气氛烧成的。还原气氛烧成熟料中阿利特无论掺杂与否,阿利特室温保留晶型都呈现MⅢ型晶体衍射特征。氧化气氛下烧成掺杂熟料中阿利特以R型为主并含有M型的混合体,不掺杂熟料中阿利特以MⅢ型晶体存在。掺杂熟料从1450℃淬冷可以保留较多的R型阿利特。在其它较低温度淬冷,掺杂熟料中阿利特更多呈现MⅠ型晶体的衍射特征。不掺杂熟料中阿利特在所有开始温度淬冷,都呈现M型衍射特征,其原因在于:随煅烧温度升高以及随淬冷起始温度的升高,Al3+在阿利特中的固溶量升高,Fe3+的固溶量有所降低,Mg2+的固溶量则没有明显变化。氧化气氛下烧成的阿利特中Al3+的固溶量要高于还原气氛下的,而还原气氛下烧成的阿利特中Fe3+/Fe2+的固溶量高于氧化气氛下的。
X-ray diffraction and plasma-induced coupled plasma emission spectroscopy were used to study the effects of calcination temperature, sintering atmosphere and quenching temperature on the polymorphism of Alite in laboratory clinker and the ionic impurities such as Al3 +, Fe3 + and Mg2 + Effect of dissolution. With the increase of calcination temperature, the Alitel symmetry increased. The alitrite crystal form in the undoped clinker changed from M Ⅰ to a mixture of M Ⅰ and M Ⅲ type. The Alite crystal form in the clinker changed from M Ⅰ to M and R-type mixture. The symmetry of Alite in the oxidative atmosphere of burnt clinker is higher than that of the reducing atmosphere. Reducing atmosphere Alite, whether calcined or not, showed the MⅢ-type crystal diffraction characteristics at all the retained Alleh crystals at room temperature. In the oxidizing atmosphere, Alite is mainly composed of R type and M type mixed in the clinker doped with alginate, and Miter type alite exists in the undoped clinker. Adulterated clinker quenched from 1450 ℃ can retain more R-type alite. Alter at other lower temperature quenching and doping clinker showed more diffraction characters of M Ⅰ crystal. Alteration of undoped clinker shows M-type diffraction characteristics at all the initial quenching temperatures. The reason for this is that as the calcination temperature increases and as the quenching onset temperature increases, Al3 + dissolves in Alite The amount of solid solution of Fe3 + decreased while the amount of dissolved Mg2 + did not change obviously. The amount of Al3 + calcined in the oxidation atmosphere is higher than that in the reducing atmosphere, while the amount of Fe3 + / Fe2 + calcined in the reducing atmosphere is higher than that in the oxidizing atmosphere.