US 12,304,838 B2
Enhanced flocculation of intractable slurries using silicate ions
Milana Trifkovic, Calgary (CA); Shahrukh Shamim, Calgary (CA); Aleksandra Govedarica, Calgary (CA); and Mahmoud Ansari, Calgary (CA)
Assigned to EnviCore Inc., Calgary (CA)
Filed by EnviCore Inc., Calgary (CA)
Filed on Feb. 27, 2024, as Appl. No. 18/588,538.
Application 18/588,538 is a continuation of application No. 18/124,535, filed on Mar. 21, 2023, granted, now 11,912,593.
Application 18/124,535 is a continuation of application No. 17/165,472, filed on Feb. 2, 2021, granted, now 11,639,303.
Application 17/165,472 is a continuation of application No. 16/448,923, filed on Jun. 21, 2019, granted, now 10,906,821, issued on Feb. 2, 2021.
Claims priority of provisional application 62/688,000, filed on Jun. 21, 2018.
Prior Publication US 2024/0254019 A1, Aug. 1, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 1/56 (2023.01); C02F 1/26 (2023.01); C02F 1/52 (2023.01); C02F 11/143 (2019.01); C02F 11/148 (2019.01); C02F 101/10 (2006.01); C02F 101/32 (2006.01); C02F 103/10 (2006.01)
CPC C02F 1/5245 (2013.01) [C02F 1/26 (2013.01); C02F 1/56 (2013.01); C02F 11/143 (2019.01); C02F 11/148 (2019.01); C02F 2001/5218 (2013.01); C02F 2101/10 (2013.01); C02F 2101/32 (2013.01); C02F 2103/10 (2013.01)] 17 Claims
 
1. A process for extracting a nanoclay from a mixture, the process comprising:
contacting the mixture with a source of silicate;
contacting the mixture with an alkali, wherein the alkali initiates silicate polycondensation;
extracting the nanoclay from the mixture by forming a layer comprising the nanoclay; and
separating the layer into at least two layers each comprising the nanoclay.