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首页> 外文期刊>South african journal of chemical engineering >Characterization of ceramic pieces shaped from clay intended for the development of filtration membranes
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Characterization of ceramic pieces shaped from clay intended for the development of filtration membranes

机译：从粘土中形成陶瓷件的特征，用于发育过滤膜的发育

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This research work is focused in study of the dilation/retreat properties of ceramic membranes and its characterization. The clay used in this work is collected in the region of Midelt in Morocco. This raw material has been characterized by XRD, FTIR, TGA/DTA and X-ray fluorescence. These analyzes show that this clay consists essentially of Quartz and Kaolinite. Then, the clay pastes containing different proportions of the organic additive are aged and used to develop rods and bricks of known geometric dimensions. However, the pastilles were developed by dry process. After drying in the open air with a different percentage of the organic matter (0–15%), the parts are treated at different temperatures (700, 800, 900, 1000 and 1050?°C) according to a suitable heating program, taking into account the initial mineralogical composition and the TGA/DTA thermograms of the samples. The dilation/retreat properties of the processed samples are discussed according to the variation of predetermined parameters such as weight loss, length, height and diameter. The evolution of the porosity, the mechanical and chemical resistance of the samples is determined. It has been found that the organic additive increases the porosity of the parts prepared by its degradation by the heat treatment and the results obtained show that the prepared materials have a high mechanical strength and chemical resistance and they have improved porosity. Indeed, the clay studied will be used to develop tubular membranes intended for the tangential filtration of wastewater, which will be the subject of the second part of this study.
机译：该研究工作主要集中在陶瓷膜的扩张/撤退特性及其表征的研究。本工作中使用的粘土在摩洛哥的米德尔地区收集。该原料的特征在于XRD，FTIR，TGA / DTA和X射线荧光。这些分析表明，这种粘土基本上由石英和高岭土组成。然后，含有不同比例的有机添加剂的粘土浆料是老化的并且用于开发已知几何尺寸的杆和砖。然而，王片是通过干法开发的。在用不同百分比的有机物质（0-15％）的露天中干燥后，根据合适的加热程序，在不同的温度（700,800,900,1000和1050Ω°C）上处理零件考虑最初的矿物学组合物和样品的TGA / DTA热图。根据预定参数的变化讨论了加工样品的扩张/退出特性，例如减肥，长度，高度和直径。确定孔隙率，样品的机械和耐化学性的进化。已经发现，有机添加剂增加了通过热处理通过降解制备的部件的孔隙率，得到的结果表明，制备的材料具有高机械强度和耐化学性，它们具有改善的孔隙率。实际上，研究的粘土将用于开发用于对废水切向过滤的管状膜，这将是本研究第二部分的主题。

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