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首页> 美国卫生研究院文献>other >Experimental study on the relationship between the mineral production capability and the physiochemical properties in the coproduction of Q phase-3CaO·3Al2O3·CaSO4 cement clinker
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Experimental study on the relationship between the mineral production capability and the physiochemical properties in the coproduction of Q phase-3CaO·3Al2O3·CaSO4 cement clinker

机译：Q相-3CaO·3Al2O3·CaSO4水泥熟料联产中矿物生产能力与理化性质关系的实验研究

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A coproduction tests of quaternary (Q) phase(6CaO·4Al2O3·MgO·SiO2) -3CaO·3Al2O3·CaSO4 cement clinker and an experimental study on the relationship between the mineral production capability and the physiochemical properties are conducted in a two-stage multiphase reaction test bed with Changguang coal. X-ray diffractometer (XRD) analyses are performed on the coproduction clinker samples. The results demonstrate that, with the reduction in particle sizes of the coal powder and the additives and expanded screening level differences between them, both the proportion of Q phase and the mass of 3CaO·3Al2O3·CaSO4 in the clinker increase accordingly. When mixed coal powder particles are prepared through reducing particle sizes and expanding screening level differences between coal powder and additives, the additives CaO and MgO are more likely to be enclosed by coal powder to form globular polymerized particles. In addition, this preparation aids in polymerization and promotes even distribution of CaO, MgO and coal minerals, thus facilitating clinker mineral formation reactions of inorganic substances in the mixed coal powder. Target minerals, such as 2CaO·SiO2 and Q phase, are found in both industrial high-calcium limestone and low-calcium limestone coproduction clinker samples. A diffraction peak of free CaO is also evident in both samples. Compared with a coproduction clinker sample of high-calcium limestone, that of low-calcium limestone exhibits higher diffraction peaks for 2CaO·SiO2 and Q phase. With the current state of the art, it is not yet the optimum choice to substitute CaCO3 for CaO in Q-phase cement clinker coproduction. Before the technology matures and gains practical application, further study on the form and the mixing process of calcium-based additives for cement clinker coproduction will be required.
机译：四阶段（Q）相（6CaO·4Al2O3·MgO·SiO2）-3CaO·3Al2O3·CaSO4水泥熟料的联合生产试验，并在两阶段多相中进行了矿物质生产能力与理化性质关系的实验研究与长光煤反应试验台。对联产熟料样品进行X射线衍射仪（XRD）分析。结果表明，随着煤粉和添加剂粒度的减小以及两者之间筛分水平的扩大，熟料中的Q相比例和3CaO·3Al2O3·CaSO4的质量均增加。当通过减小粒度和扩大煤粉与添加剂之间的筛分水平差异来制备混合煤粉颗粒时，添加剂CaO和MgO更可能被煤粉包围而形成球状聚合颗粒。另外，该制备方法有助于聚合并促进CaO，MgO和煤矿物的均匀分布，从而促进混合煤粉中无机物质的熟料矿物形成反应。在工业高钙石灰石和低钙石灰石联产熟料样品中都发现了目标矿物，例如2CaO·SiO2和Q相。在两个样品中，游离CaO的衍射峰也很明显。与高钙石灰石的联产熟料样品相比，低钙石灰石的2CaO·SiO2和Q相具有更高的衍射峰。以当前的现有技术，在Q相水泥熟料联产中，用CaCO3代替CaO仍不是最佳选择。在该技术成熟并得到实际应用之前，需要进一步研究水泥熟料联产用钙基添加剂的形式和混合工艺。

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