POROSITY LIGHT WEIGHT CONSTRUCTION RESOURCES PRODUCTION METHOD FOR RED MUD

摘要

The present invention mixes paper sludge with red mud or recycles red mud produced as a by-product from aluminum hydroxide manufacturing process to lightweight building materials or waste glass, waste pearl rock, waste diatomaceous earth, shell ( Specific gravity using a method in which a mixture of calcium carbonate-based waste), purified water, sewage sludge and coal ash, alone or in combination, is mixed in a suitable ratio in a temperature range of 900 ° C to 1200 ° C and a firing time within 10 minutes. It is to manufacture a porous red mud body having various specific gravity ranges between 0.6 and 2.5, and the red mud porous body manufactured as described above is used as a lightweight building material for light aggregate, soundproof panel, heat insulation or heat insulation panel.