Effect of raw material ratio and sintering temperature on properties of coal gangue-feldspar powder artificial aggregate

Coal gangue and feldspar powder were used as raw materials, and clay was deemed to be a binder, sintering artificial aggregates. The effects of the change of raw material ratio and sintering temperature on the physical properties, micromorphology, crystal composition and metal leaching of artificial aggregates were explored. Grey relational analysis was used to analyze the correlation between the two factors and the properties of coal gangue-feldspar powder. With excellent mechanical properties, artificial aggregates have the possibility of replacing traditional aggregates. The study provides new ideas for the design of solid waste materials and the replacement of traditional stone.