WATER STABLE GRANULES AND TABLETS

• US 20200131052A1
• Filed: 06/29/2018
• Published: 04/30/2020
• Est. Priority Date: 06/29/2017
• Status: Abandoned Application

• Current Assignee: Solenis Technologies Cayman LP (Olympus Water Holdings IV LP)
• Original Assignee: Solenis Technologies Cayman LP (Olympus Water Holdings IV LP)
• Inventors: MATHUR, Sharad, ATTLESEY, Alex J., LIU, Xue
• Application Number:
  US16/626,892
• Publication Number:
  US 20200131052A1
• Time in Patent Office: Days
• CPC Class Codes: B01J 2/22 by pressing in moulds or between rollers
• CPC Class Codes: B01J 20/0211 Compounds of Ti, Zr, Hf
• CPC Class Codes: B01J 20/10 comprising silica or silicate
• CPC Class Codes: B01J 20/3028 Granulating, agglomerating or aggregating
• CPC Class Codes: B01J 20/3035 Compressing
• CPC Class Codes: B30B 11/006 for roller presses
• CPC Class Codes: C02F 1/281 using inorganic sorbents
• CPC Class Codes: C02F 2101/20 Heavy metals or heavy metal compounds

Abstract

The present invention addresses the challenges of making water stable granules and/or water stable tablets without the use of a binder or heat. Disclosed herein are methods of forming water stable granules and/or water stable tablets, their composition and methods of their use.

Claims

1. A method comprising:

feeding a powder into a roller compactor at a first compaction force to form a shape; and

passing the shape through a grinder to form granules;

wherein the formed granules are water stable such that about 30% or less of the granules disintegrate in a disintegration test performed in static or in agitated water.

4. The method of claim 1, further comprising blending the powder with a lubricant selected from the group of solid lubricants, liquid lubricants, and mixtures thereof.

5. The method of claim 4, wherein the lubricant comprises one or more of graphite, magnesium stearate, paraffin, hydrocarbon oil, polyols, silicone oil, perfluorated oil, fatty esters, fatty alcohols.

6. The method of claim 1, wherein the powder comprises inorganic materials selected from the group of metal-oxides, metal hydroxides, zeolites, metal silicates, and mixtures thereof.

7. The method of claim 1, wherein the powder comprises titanium silicate.

8. The method of claim 1, wherein no more than 50 wt % of the granules range in size from about 50 μ

m to about 500 μ

m.

10. The method of claim 1, wherein about 20% or less of the water stable granules disintegrate in a disintegration test preformed in agitated or static water.

11. The method of claim 1, wherein the first compaction force ranges from about 35 kN to about 300 kN.

13. The method of any one of claims 1-3, wherein the water stable granules or water stable tablets are formed without applying heat, incorporating a binder, or a combination thereof.

15. A method for removing heavy metal contaminants, heavy metal anions, or a mixture thereof from a water stream comprising:

contacting the water stream with roller compacted and ground water stable granules of claim 1.

18. The method of claim 1, further comprising de-dusting the granules, wherein a lower percentage of de-dusted granules or de-dusted tablets disintegrate than the percentage of granules or tablets that disintegrate without de-dusting as compared in a disintegration test performed in static or in agitated water.

19. The method of claim 1, further comprising separating water stable granules of a specified size range from one or more of fines or oversized particles;

and recycling the one or more of the fines or oversized particles.

20. The method of claim 1, wherein about 1% or less of the water stable granules disintegrate in a disintegration test preformed in agitated or static water.

2. (canceled)

3. A method comprising:

feeding a powder into a roller compactor at a first compaction force to form a shape; and

passing the shape through a grinder to form granules;

wherein the formed granules comprise titanium silicate and are water stable,

9. (canceled)

12. (canceled)

14. (canceled)

16. (canceled)

17. (canceled)