METHOD FOR RECOVERING ALUMINIUM COMPOUNDS AND MMA FROM WASTE ARTIFICIAL MARBLE

摘要

The present invention relates to a method for recovering aluminium compounds and MMA from waste artificial marble, wherein aluminium compounds are recovered by carrying out acid and alkali processing on waste artificial marble or on artificial marble scraps and powder created during the process of turning artificial marble into a product, and PMMA is isolated and recovered by carrying out dry distillation on the remaining fraction, and this is an economical industrial method in that the aluminium compounds are recovered with the use of a small amount of energy since thermal decomposition is not performed during the recovery of the aluminium compounds from the waste artificial marble, and the present invention has the advantage that the percentage of MMA recovered is high because the aluminium compounds are recovered without any loss of MMA since the acid and alkali processing is carried out on the waste artificial marble.