Determination of Clay Minerals by Ignition Loss Methods With a Muffle Fornace

Influence of Low-temperature Oxidation on Structure of Coke Making Coal

“…These observed facts suggest that the dehydration of kaolin and the decarboxylation of CaCO 3 occurred due to heating to a temperature of 300°C or higher. It is known that the dehydration and decarboxylation of inorganic matter occur at temperatures as high as 500°C, 35) and the results obtained by XRD in this study are consistent with such knowledge. Table 2 lists the crystallite sizes obtained from the individual samples by the XRD pattern analysis.…”

Influence of mineral composition of siliceous rock on its volume change

“…XRD-Rietveld analysis was performed to study correlations between amounts of expansive clay minerals, amounts of drying shrinkage, and thermal expansion coefficients. Furthermore, with reference to the simple identification method for clay minerals used in the field of applied geology [21], a simple evaluation method for the shrinkage behavior of aggregate is discussed based on the ignition loss and the related bound water contents. This is an indicator of the association of number of hydroxyl groups in clay minerals with the amount of drying shrinkage of aggregates.…”

Investigation on colourisation regularity of colouring hot dip galvanisation processing

“…This is so called colouring hot dip galvanisation, a new technology producing coloured steel sheets which combines the hot dip galvanisation with high temperature oxidation. In 1990s, the further research works were carried out by Nippon Mining Co., Ltd. [8][9][10][11] At the meantime, correlated research works were also carried out in China. 12,13 All these research works have promoted this processing to be more practical way, in which the addition choice in the galvanising bath is very important to make sure whether the light interference colour on the oxide film could be developed or not by the preferential oxidation of these alloying elements during the cooling process after withdrawing from the bath.…”