Closed circuit--Process developed for the separation of lightweight concrete and gypsum plaster

摘要

In the past, the recycling of unsorted lightweight concrete resulted in relatively high raw material losses. To combat this, the Federal Association of German Lightweight Concrete Industry, based in Neuwied, commissioned studies at renowned institutes to enable a simple and field-oriented solution for the separation of lightweight concrete and gypsum plaster. The upshot of these impressive studies is now available. A straight mechanical process has been developed that enables the recovery of 90 to 95 % lightweight concrete for the production of new lightweight concrete products. The remaining concrete particles are used together with the gypsum content in other production cycles.