Building materials and method for manufacturing same

Details Building materials and method for manufacturing same Building materials and method for manufacturing same

1981-12-03

1983-09-06

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

501 95, 501153, 501155, C04B 4318

Patent

active

044027508

ABSTRACT:
The invention provides a novel light-weight building material suitable for heat and sound insulation from an aluminum hydroxide sludge, which is a very noxious industrial waste material, and disintegrated scrapped paper as the base components. The sludge is first alkalized by the addition of sodium hydroxide to dissolve the gel-like aluminum hydroxide in the form of sodium aluminate and then admixed with the disintegrated scrapped paper to give a slurried mixture which is next neutralized to a weakly acidic condition by adding phosphoric acid whereby insoluble phosphates are deposited on the cellulosic fibers. The slurried mixture is further admixed with a coagulating agent to give a coagulated mass of the fibrous material with deposition of the phosphates. The coagulated mass is then separated from the liquid portion and dried to give a light-weight mass which is used as a blow-on insulating material for buildings or as a material for shaping an insulating board or slab.

REFERENCES:
patent: 3835054 (1974-09-01), Olewinski et al.

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