Abstract: In order to seek the sources of raw materials for exterior foam insulation material，through optimizing of particle gradation，improving plasticity and adding inorganic plasticizer，techniques for increasing its plasticity and making the qualified product are found out，with the sandstone coal gangue and polishing tile waste as the main raw materials.Analysis is made on the effect of bulk density，compressive strength and thermal conductivity，with different amount of polishing tile waste and additive，to design the orthogonal experiment to determine the suitable additive content.The optimum sintering procedure is confirmed with orthogonal test of choosing preheating temperature，preheating time，sintering temperature and holding time as four main factors，which has great effect on the sintering procedure.The results provide a new way to produce new building materials for the comprehensive utilization of industrial waste.

Key words: Sandstone coal gangue, Polishing tile waste, Foam thermal insulation material, Composition proportion, Sintering program