Low-temperature fast-fired lightweight ceramic heat insulation plate and preparation method thereof

A preparation method of low-temperature fast-fired lightweight ceramic heat insulation plates, comprising:

• performing ball milling and powder spraying on raw materials containing foamable ceramic waste to make foamable powders, the weight percentages of the foamable ceramic waste in the raw materials being 80-100 wt %;
• mixing 100 weight parts of the foamable powders with 3-15 weight parts of granular powders of organics with low melting points uniformly to obtain mixed powder materials, the particle sizes of the foamable powders being 0.18-0.98 mm, and the particle sizes of the organics with low melting points being 0.15-0.25 mm;
• pressing the mixed powder materials under 10-20 MPa to make a ceramic green body;
• and
• firing the ceramic green body at 1100-1170° C. to make the lightweight energy-saving ceramic heat insulation plates, the procedure parameters for the firing being:
• the ceramic green body is heated to a temperature ranging from 1100° C. to 1170° C. within 20-35 minutes, and kept at the temperature for 5-10 minutes;
• the organics with low melting points including polyethylene wax and polypropylene wax.