Measurement of CaO-SiO2-CaCl2 slag density by an improved Archimedean method
Abstract
In order to optimize the removal of boron during the refining of slag to obtain solar grade silicon, the density of molten slag was measured by an improved Archimedean method within a temperature range of between 1073 and 1373 K. This found that the density of molten slag at 1723 K can be deduced from a linear fitting, and that the slag density decreases with increasing temperature. However, there is a reduction in slag density with decreasing CaO concentration. An increase in the molar volume of slag was also observed with increasing temperature.
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