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US 5,425,807 AGranted
Volcanic fly ash and kiln dust compositions and a process for making articles therefrom
AssigneeTide Company
InventorMitchell S. Riddle
Life of this patent
Estimating the term…
Abstract
The present invention relates to a novel composition which is useful for forming construction blocks and encapsulating hazardous materials, a process for producing blocks and encapsulating the material, and blocks made of the material. This composition is a mixture of klin dust or volcanic fly ash and aggregate. The process comprises the steps of (a) blending a dry mixture comprising the kiln dust or volcanic fly ash mixture with water; (b) transferring the blended mixture into a compression zone and (c) compressing the blended mixture in the compression zone to form a brick of the desired size.
Claims19
A construction block prepared by:
- (a) blending a dry material with water, wherein said dry material comprises a material selected from the group consisting of volcanic fly ash and kiln dust;
- (b) transferring the blended material to a compression zone, which is sized such that it contains an amount of blended material to produce a construction block;
- and
- (c) compressing the blended material at a pressure of 1000 to 2500 psi to form the construction block.
1 more element
A construction block prepared by:
- (a) blending a dry material with water, wherein the dry material comprises a mixture of aggregate and a material selected from the group consisting of kiln dust and volcanic fly ash;
- (b) transferring the blended material to a compression zone, which is sized such that it contains an amount of blended material to produce a construction block;
- and
- (c) compressing the blended material at a pressure of 1000 to 2500 psi to form the construction block.
1 more element
A construction block prepared by:
- (a) blending a dry material with water, wherein the dry material comprises a mixture of volcanic fly ash or kiln dust and an additive comprising lime, gypsum plaster, polymers, pumice, clay, or aggregate;
- (b) transferring the blended material to a compression zone, which is sized such that it contains an amount of blended material to produce a construction block;
- and
- (c) compressing the blended material at a pressure of 1000 to 2500 psi to form the construction block.
1 more element
A construction block prepared by:
- (a) blending a dry material with water, wherein the dry material comprises a mixture of volcanic ash or kiln dust and a hazardous material to be encapsulated in the construction block;
- (b) transferring the blended material to a compression zone, which is sized such that it contains an amount of blended material to produce a construction block;
- and
- (c) compressing the blended material at a pressure of 1000 to 2500 psi to form the construction block.
1 more element
A construction block prepared by:
- (a) blending a dry material with water, wherein the dry material comprises a mixture of volcanic ash or kiln dust and a hazardous material to be encapsulated in the construction, block, wherein the hazardous material is low yield radioactive waste;
- (b) transferring the blended material to a compression zone, which is sized such that it contains an amount of blended material to produce a construction block;
- (c) compressing the blended material at a pressure of 1000 to 2500 psi to form the construction block;
- (d) heating a composition which contains a material selected from the group consisting of kiln dust and volcanic fly ash to a temperature sufficient to liquify the composition;
- and
- (e) dipping the construction block into the liquified composition, so as to provide a glass coating on the exterior surface of the construction block.
3 more elements
A construction block prepared by:
- (a) forming a dry composition comprising aggregate and a dry material selected from the group consisting of kiln dust and volcanic fly ash, wherein the dry material to aggregate ratio is in the range 15% dry material :
- 85% aggregate to 100% dry material :
- 0% aggregate, by weight;
- (b) blending the dry composition with water, which is added in an amount which is approximately 14% by weight relative to the total weight of the dry composition;
- (c) transferring the blended composition to a press box, wherein the amount of blended composition which is transferred into the press box is dependent on the size of the block which is to be formed, and the press box is sized so as to contain the correct amount of blended composition which is needed in order to produce a construction block;
- and
- (d) compressing the blended mixture at a pressure of 1500 to 2500 psi in the press box in order to form the construction block.
4 more elements
Dependencies are inferred from the claim text.