Straw-fiber and shale sintered microporous material and preparation method thereof

The invention discloses a straw-fiber and shale sintered microporous material and a preparation method thereof. The straw-fiber and shale sintered microporous material is formed by using 88 to 93 parts (by weight) of shale powder and 7 to 12 parts (by weight) of straw fiber powder, humidifying and mixing the shale powder and the straw fiber powder, carrying out compression molding forming on an obtained mixture, then drying the mixture and afterwards sintering the mixture, and is mainly used as a filling building block of a nonbearing wall; the performance of the material is that the water absorption all reaches 15 percent or above, the apparent porosity reaches 27 percent or above, and the heat conductivity coefficient at a normal temperature is not more than 0.40W/(m*K) to 0.50W/(m*K); the material has excellent heat-insulation and sound-insulation performance, is light in weight, has the density which is only 1,494/(kg/*m) to 1,733/(kg/*m), can be used for lightening the weight of a building by a w