Diopside-quartz light thermal insulation material based on phosphate tailings-silver tailings and preparation method thereof

The invention relates to a diopside-quartz light thermal insulation material based on phosphate tailings-silver tailings and a preparation method thereof. According to the technical scheme, 60-80 wt% of phosphate tailings and 20-40 wt% of silver tailings serve as raw materials and are mixed to be uniform, 0-16 wt% of pore forming agents and 6-30 wt% of water are added, stirring is conducted, and a mixture is obtained; ageing the mixture for 12-24 hours, casting and molding, naturally drying, and drying at 90-110 DEG C for 24-48 hours to obtain a pretreated material; the pretreated material is heated to 180-220 DEG C from the room temperature at the rate of 1-2 DEG C/min, then heated to 680-740 DEG C at the rate of 8-12 DEG C/min, then heated to 1000-1300 DEG C at the rate of 4-6 DEG C/min, subjected to heat preservation for 3-7 h and cooled along with a furnace, and the diopside-quartz light heat insulation material based on the phosphate tailings and the silver tailings is prepared. The preparation method ha