Diatomaceous earth products, processes for preparing them, and methods of their use
AssigneeImerys Filtration Minerals, Inc.
InventorBO WANG
Life of this patent
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Abstract
A particulate material includes agglomerated diatomaceous earth and a silicone binder. A process for preparing a diatomaceous earth product includes agglomerating at least one natural diatomaceous earth with at least one silicone material, and subjecting the agglomerated diatomaceous earth to at least one heat treatment at a temperature ranging from about 600° C. to about 1,000° C. A filter aid composition includes a diatomaceous earth product including an agglomerated diatomaceous earth and a silicone material. A method of filtering at least one liquid includes passing the at least one liquid through at least one filter membrane including a diatomaceous earth product including agglomerated diatomaceous earth and a silicone material.
Claims22
1-47. (canceled)
A process for preparing a diatomaceous earth product, the process comprising:
- agglomerating at least one natural diatomaceous earth with at least one silicone material, and
- subjecting the agglomerated diatomaceous earth to at least one heat treatment at a temperature ranging from about 600° C. to about 1,000° C.,
- wherein the agglomerating comprises preparing at least one aqueous solution comprising the at least one silicone material, and contacting the at least one natural diatomaceous earth with the at least one aqueous solution.
(canceled)
Dependencies are inferred from the claim text.