Effect of activated carbon bed on binder removal from ceramic injection moldings

Weight losses during the hinder removal from ceramic injection moldings tha t have been placed in beds of activated carbon powder and two types of alum ina powder mere compared. The effect of the specimen size and shape on debi nding in a bed of activated carbon was investigated. Because of the structu re of its particles, activated carbon powder allowed binder losses in ceram ic moldings that consisted of submicrometer-sized particles to increase at a temperature of 130 degreesC. The binder loss in a bed of activated carbon was dependent on the ratio of surface area to volume of the body that was estracted. Renewal of the sorption abilities of the bed of activated carbon after saturation with binder increased the rate of binder removal.