The invention discloses a light-weight shale
brick manufactured from
alcohol wastewater of a
sugar refinery. The light-weight shale
brick is mainly prepared from the following raw materials in percentage by
mass: 55-65% of shale, 15-25% of molasses waste residue with a pH value of 6.5-7.5 of the
sugar refinery, 15-20% of auxiliary materials and 5-10% of adjuvants, wherein the adjuvants comprise, in proportioning ratio by
mass, 85-95% of
slag and 5-15% of
potassium chloride; the raw materials are added in water at a temperature of 40-45 DEG C and occupying 50-60% of the
mass of the raw materials, stirred and stood for 1-1.5 hours to prepare a
brick blank, and the brick blank is dried, roasted, insulated and cooled to prepare the light-weight shale brick. The light-weight shale brick has the following advantages that: the molasses waste residue and other auxiliary materials are added, after high-temperature
sintering, the auxiliary materials are burnt thoroughly to form lots of micropores in the brick, therefore, the light-weight shale brick is good in
thermal insulation, heat isolation, fireproof, anti-
cracking, soundproof performances and the like; moreover, the
dead weight is greatly reduced, and the light-weight shale brick is excellent in anchoring performance, low in cost, light in
dead weight, convenient to construct, and capable of meeting the needs of secondary decoration for buildings.