Co-agglomerated composite materials
US10105679B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2017 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Sep 8, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite filter aid may include diatomaceous earth, natural glass, and a precipitated silica binder, wherein the filter aid has a permeability ranging from 3 to 20 darcys. A composite filter aid may include diatomaceous earth, perlite, and a precipitated silica binder, wherein the filter aid has an alpha density less than 15 lbs/ft3. A method for making a composite material may include blending diatomaceous earth and perlite, adding alkali silicate to the blended diatomaceous earth and perlite, and precipitating the alkali silicate as a binder to make the composite material. A method for filtering a beverage may include using a composite filter aid and/or composite material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.