A
cement concrete recycling method is disclosed, which comprises three parts of stripping aggregates and slurries in waste concrete, regenerating the aggregates and regenerating the slurries. A
microwave heat treatment method is adopted for stripping the aggregates and slurries in the waste concrete, and mainly comprises the following steps: utilizing the difference between the
microwave absorbing capability of the slurries and the
microwave absorbing capability of the aggregates, putting the waste concrete into a sealed device provided with a microwave generator, subjecting the waste concrete to
microwave irradiation so as to increase the temperature until the concrete is made brittle by
irradiation, rotating the brittle concrete in a cylinder with a gridding lining, and utilizing the mutual collision to thoroughly strip the slurries and the aggregates. The aggregate regeneration comprises the following steps: for the aggregates stripped from the concrete, screening the residual part after a
powder concentrator collects a part of the dehydrated phase powders of
cement slurries, and preparing into regenerated aggregates of different sizes. The
slurry regeneration comprises the following steps: according to different chemical compositions of the dehydrated phases of the
cement slurries, blending and correcting raw materials specifically, enabling the rate of the
raw material to meet the requirements of
silicate cement
raw material, and then adopting a traditional
kiln or microwave to sinter and prepare
silicate cement.