Lightweight artificial aggregate manufacturing method using pape

Details Lightweight artificial aggregate manufacturing method using pape Lightweight artificial aggregate manufacturing method using pape

1997-06-12

1998-06-09

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Utilizing chemically reactive atmosphere other than air, per...

264660, 264661, 264656, 501155, C04B 3564

Patent

active

057628645

ABSTRACT:
A lightweight artificial aggregate manufacturing method includes the steps of: mixing aggregate sludge, whose moisture content exceeds 30%, with stone fragments, generated when pulverizing stone, to decrease the moisture content, mixing this mixture and sewage disposal plant sludge, which are dried and micro-pulverized, in a weight ratio of 50 to 50, and making the mixed sludge spheroids with a rotary plate molding device; applying paper sludge, which is dried and micro-pulverized, to the surface of the spheroids in order to prevent condensation of the spheroid during burning and to light the weight of aggregate; burning the spheroid with reducing flame of a temperature between 1000.degree. C. and 1200.degree. C. in a burning furnace, which uses gas or oil as fuel; and cooling the burned spheroid.

REFERENCES:
patent: 1895159 (1933-01-01), Greenwalt
patent: 3030222 (1962-04-01), Eichenlaub
patent: 4112033 (1978-09-01), Lingl
patent: 4872993 (1989-10-01), Harrison
patent: 4874153 (1989-10-01), Hashimoto
patent: 5087375 (1992-02-01), Weinwurm

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