Process for compacting calcined kaolin clay
AssigneeThiele Kaolin Company
InventorsWilliam H. Wiggins SR., Andrea L. Crabb, William H. Wiggins JR.
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Abstract
Calcined kaolin clay having a high bulk density, improved wet out and slurry incorporation times is produced by using pressure to compact the clay. Other properties of the compacted clay are improved or equivalent to the non-compacted starting calcined clay material.
Claims15
A process for the compacting of calcined kaolin clay, wherein the process comprises the sequential steps of:
- A. applying pressure in the range of about 25 to about 450 pounds per square inch to a container of non-compacted calcined kaolin clay wherein the clay is compacted to a bulk density of about 25 to about 40 pounds per cubic foot,
- wherein the container is a non-rigid fabric container having closed sides, an open portion and a closed portion opposite the open portion;
- wherein the container is positioned in a rigid ventilated structure having closed sides, an open portion for alignment with the open portion of the container and a closed portion for alignment with the closed portion of the container;
- wherein the container is in substantial alignment with the structure;
- and
- B. removing the container of compacted calcined kaolin clay from the structure.
A compacted calcined kaolin clay having a bulk density of about 25 to about 40 pounds per cubic foot and improved wettability and slurry incorporation times when compared to calcined kaolin clay in a non-compacted form.
Dependencies are inferred from the claim text.