Composite ceramic vermiculite insulation board and preparation method thereof

The invention relates to the technical field of building materials, and discloses a composite ceramic vermiculite insulation board and a preparation method thereof, the composite ceramic vermiculite insulation board comprises the following components by weight: 100 parts of vermiculite, 20-30 parts of modified bentonite, 30-50 parts of ceramic powder, 15-25 parts of silicon phosphate, 10-12 parts of fiber, 1-5 parts of water glass, and 1-2 parts of a dispersant; the preparation method comprises the following steps: adding vermiculite, modified bentonite, ceramic powder, silicon phosphate, fiber, water glass and a dispersant into a stirrer, stirring, uniformly mixing to obtain a mixture, pouring the mixture into a mold, pressing the mixture into a green body by using molding equipment, sintering the green body in a sintering furnace, naturally cooling, curing, demolding and finishing to obtain the composite ceramic vermiculite heat insulation plate. The material has excellent heat insulation performance, impac