Environment-friendly brick taking urban domestic sludge as raw material, and production method thereof

The invention discloses an environment-friendly brick taking urban domestic sludge as raw material, and a production method of the environment-friendly brick; the production method comprises the steps of: continuously sending the urban domestic sludge with the water content of 80wt% into a sludge spin-drying device connected with high-temperature flue gas of a kiln, and carrying out three stages of centrifugal drying to obtain urban domestic sludge with the water content of 30wt%; taking 55% by weight of urban domestic sludge with the water content of 30wt%, adding 10% by weight of shale, 25%by weight of refuse incineration power plant waste residue and 10% by weight of industrial waste furnace slag into the urban domestic sludge with the water content of 30wt%, stirring, and evenly mixing to prepare a green brick; sending the green brick into the kiln, controlling the firing temperature to be within the range of 1100-1200 DEG C, and controlling the time from calcination to heat insulation to be 3-4h; and dra