Process for agglomerating compressible mineral substances under the form of powder, particles or fibres
First Claim
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1. The method of making a plate, comprising:
- a. forming a mixture of clay, caustic soda and water into a moldable mass;
b. placing said mass between press platens,c. between said mass and said platens disposing moistened layers of porous material and disposing perforated grid members between said layers and said platens,d. pressing and mass between said layers and grid members with said platens heated to at least 150°
C for a sufficient time to react said mixture and to form and cure said plate.
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Abstract
The invention pertains to a process for agglomerating compressible powders, particles or fibres of mineral substances, said process comprising the steps of placing at least one layer of a steam and gas pervious product on a layer of said compressible substances in which the water content is such that, after vaporization, a sufficient amount of water is still present to ensure the desired chemical reaction, then subjecting the layers to the simultaneous action of pressure and heating.
53 Citations
1 Claim
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1. The method of making a plate, comprising:
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a. forming a mixture of clay, caustic soda and water into a moldable mass; b. placing said mass between press platens, c. between said mass and said platens disposing moistened layers of porous material and disposing perforated grid members between said layers and said platens, d. pressing and mass between said layers and grid members with said platens heated to at least 150°
C for a sufficient time to react said mixture and to form and cure said plate.
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Specification
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Current AssigneeCoordination et Developpement de L'Innovation Societe Anonyme EN Abrege Cordi
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Original AssigneeCoordination et Developpement de L'Innovation Societe Anonyme EN Abrege Cordi
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InventorsDavidovits, Joseph, Legrand, Jean Jacques
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Primary Examiner(s)Hoag, Willard E.
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Application NumberUS05/537,719Time in Patent Office889 DaysField of Search264/109, 264/333, 264/DIG. 43, 264/345, 264/332, 264/85, 264/86, 264/82, 425/812, 106/71, 106/72, 106/73US Class Current264/82CPC Class CodesC04B 22/062 of the alkali or alkaline-e...C04B 28/001 containing unburned clay po...C04B 40/02 Selection of the hardening ...Y10S 264/43 Processes of curing clay an...
