Effect of limestone dust on the properties of Thai pottery sintering at low temperature
AbstractLimestone dust from a limestone crushing plant was used as an additive in pottery clay for this experiment. After the limestone dust was sieved through a 35 mesh stainless steel sieve, it was mixed with Angthong pottery clay at various contents. Samples with and without limestone dust were sintered at 600, 700, 900, and 1000Â°C. Because of limestone blowing for samples with limestone dust sintered at 900 and 1000Â°C, physical property measurement was performed only for samples sintered at 600 and 700Â°C. While sintering at low temperatures (600 and 700Â°C), physical properties of samples with limestone dust were improved. Water absorption and linear firing shrinkage were reduced when limestone dust content increased and flexural strength increased when limestone dust content increased. Furthermore, no black coring was found in samples with limestone dust.
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