Water retardant covering material for solid waste landfills

Details Water retardant covering material for solid waste landfills Water retardant covering material for solid waste landfills

1990-07-11

1991-10-08

Favors, Edward G.

Furnaces

Process

Incinerating refuse

110224, 110246, 405129, F23G 502

Patent

active

050544063

ABSTRACT:
The present invention describes a water retardant material produced by a mixture of earthen clay and 15% to 25% by weight of recycled paper pulp sludge. Paper pulp sludge is incinerated in a rotary kiln, typically a rotary cement kiln asphalt dryer, or fluidized bed incinerator. Paper pulp sludge is fed continuously into said rotary kiln while temperature are maintained in the range of approximately 800.degree. to 3500.degree. F. During incineration, mixing catalysts (typically casein or soy protein) and wood pulp fibers are burned while moisture is evaporated. The resulting incinerated product consists essentially of carbonate particles which are collected for subsequent use. Use of this material as a water retardant covering for landfills is described.

REFERENCES:
patent: 4753551 (1988-06-01), Brueggemann et al.
patent: 4908129 (1990-03-01), Finsterwalder et al.

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