Utilization of sludge waste from natural rubber manufacturing process as a raw material for clay-ceramic production

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Abstract
The possibility of utilization of the sludge waste obtained from the natural rubber manufacturing process as a raw material for producing clay ceramics was investigated. To prepared clay-based ceramic, the mixtures of traditional clay and sludge waste (10–30 wt%) were milled, uniaxilly pressed and sintered at a temperature between 1000 and 1200°C. The effect of sludge waste on the properties of clay-based ceramic products was examined. The results showed that the amount of sludge waste addition had an effect on both sinterability and properties of the clay ceramics. Up to 30 wt% of sludge waste can be added into the clay ceramics, and the sintered samples showed good properties.

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