Light sand-gravel and its method of production

Details Light sand-gravel and its method of production Light sand-gravel and its method of production

1998-07-06

1999-08-10

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106811, 106817, C04B 1402, C04B 2004

Patent

active

059353163

ABSTRACT:
A light sand-gravel and its production methodology is provided. The light sand-gravel has a specific gravity within the range of 0.4.about.2.0. It has an expanded inner structure with porosity to approximate an evacuated space and a vitreous surface. The production methodology involves the preheating of sorted and dried rock materials, subsequent heating and heat soaking processes in a converter preset with four stages of temperature control. Stage 1 provides for preheating. Stages 2 and 3 provides heating and Stage 4 provides heat soaking to produce a light sand-gravel aggregate with a particular specific gravity.

REFERENCES:
JAPIO Patent Abstract No. JP404119952A, abstract of Japanese Patent Specification No. 4-119952, Apr. 1992.
WPIDS Abstract No.78-86741A, abstract of Japanese Patent Specification No. 53-121819, Oct. 1978.
WPIDS Abstract No. 97-007391, abstract of Japanese Patent Specification No. 08-277155, Oct. 1996.

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