IP Library Granted Patent US 10,351,484
Granted Patent B2
US 10,351,484 · App. 15/154,255 · Granted Jul 16, 2019

Fertilizer compositions and methods of making and using the same

Inventors: Mark L. Weaver (Greenwell Springs, LA); Vincent Paola (Jeannette, PA); John Cravener (North Apollo, PA); Narsimhan Raghunathan (Export, PA); Judodine Nichols (Murrysville, PA)
Assignee: Alcoa USA Corp.
C05G3/00C05C1/00C05C1/02C05G3/0058
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Quick Facts
Patent No.
US 10,351,484
App. No.
15/154,255
Granted
Jul 16, 2019
Kind
B2
Abstract

Broadly, the instant disclosure is directed towards: fertilizer compositions and methods of making the same, in which, due to the composition, the fertilizer exhibits blast suppression (e.g. measured via specific impulse) and/or desensitization (e.g. measured via unconfined critical diameter and/or booster quantity needed to initiate detonation) as compared to existing ammonium nitrate fertilizer(s).

Claims (37)

1. A method comprising:

heating a stabilizer material comprising an LDH to a temperature of greater than 350 C to not greater than 650 C to form a treated LDH stabilizer material;

combining the treated LDH stabilizer material with a molten ammonium nitrate material to form a molten fertilizer composition;

prilling the molten fertilizer composition to form a prilled product,

the fertilizer composition including: the ammonium nitrate material and the LDH stabilizer material; wherein the fertilizer composition is configured, via an effective amount of the treated LDH stabilizer material, to have a blast resistance, when measured in accordance with a blast propagation test.

2. The method of claim 1 , wherein the LDH comprises: a hydrocalumite material.

3. The method of claim 1 , wherein the LDH comprises: a hydrotalcite material.

4. The method of claim 1 , wherein the fertilizer composition is a homogenous blend.

5. The method of claim 1 , wherein the fertilizer product comprises a mesh size of between 4 mesh and 20 mesh.

6. The method of claim 1 , wherein the heating step further comprises: heating the stabilizer material comprising the LDH to a temperature between 375° C. and 500° C.

7. A method, comprising:

mixing a treated stabilizer material comprising a phosphoric acid rinsed LDH, the resulting LDH material having a pH of less than of 8.49, with a molten ammonium nitrate material to form a molten fertilizer composition; and

prilling the molten fertilizer composition to form a prilled product, wherein the fertilizer composition including: the ammonium nitrate material and the the treated stabilizer material; wherein the fertilizer composition is configured, via an effective amount of the treated stabilizer material, to have a blast resistance, when measured in accordance with a blast propagation test.

8. The method of claim 7 , wherein the LDH comprises: a hydrocalumite material.

9. The method of claim 7 , wherein the LDH comprises: a hydrotalcite material.

10. The method of claim 7 , wherein the fertilizer composition is a homogenous blend.

11. The method of claim 7 , wherein the fertilizer product comprises a mesh size of between 4 mesh and 20 mesh.

12. A method, comprising:

neutralizing a stabilizer material comprising an LDH with a phosphoric acid solution to provide a treated stabilizer material having a pH of not greater than 8.49;

mixing the treated stabilizer material with a molten ammonium nitrate material to form a molten fertilizer composition; and

prilling the molten fertilizer composition to form a prilled product, wherein the fertilizer composition including: the ammonium nitrate material and the treated stabilizer material; wherein the fertilizer composition is configured, via an effective amount of the treated stabilizer material, to have a blast resistance, when measured in accordance with a blast propagation test.

13. The method of claim 12 , wherein the LDH comprises: a hydrocalumite material.

14. The method of claim 12 , wherein the LDH comprises: a hydrotalcite material.

15. The method of claim 12 , wherein the fertilizer composition is a homogenous blend.

16. The method of claim 12 , wherein the fertilizer product comprises a mesh size of between 4 mesh and 20 mesh.

17. A method, comprising:

treating a stabilizer material with an effective treatment selected from the group consisting of: at least one of a thermal treatment or a chemical treatment to provide a treated stabilizer material;

mixing the treated stabilizer material and an ammonium nitrate material to form a molten fertilizer composition;

directing the molten fertilizer composition through a prilling head to form droplets of the fertilizer composition;

flowing the droplets from the top of a chamber to the bottom of a chamber, where the top of the chamber is configured in liquid communication with the prilling head, wherein the chamber is configured with a gas flow configured at a sufficient temperature to cool the droplets;

solidifying the droplets as the droplets pass through the gas; and

forming a prilled fertilizer product, the fertilizer product comprising: the ammonium nitrate material and the treated stabilizer material; wherein the fertilizer product is configured, via an effective amount of the treated stabilizer material, to have a blast resistance, when measured in accordance with a blast propagation test.

18. The method of claim 17 , wherein the stabilizer material is an LDH.

19. The method of claim 18 , wherein the LDH comprises: a hydrocalumite material.

20. The method of claim 17 , wherein the LDH comprises: a hydrotalcite material.

21. The method of claim 17 , wherein the fertilizer composition is a homogenous blend.

22. The method of claim 17 , wherein the fertilizer product comprises a mesh size of between 4 mesh and 20 mesh.

Assignments (4)
RELEASE OF SECURITY INTEREST Recorded Sep 28, 2022
From: JPMORGAN CHASE BANK, N.A.
To: ALCOA USA CORP.
Reel/Frame 061558/0257 →
SECURITY INTEREST Recorded Jan 27, 2017
From: ALCOA USA CORP.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 041521/0521 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 3, 2016
From: ALCOA INC.
To: ALCOA USA CORP.
Reel/Frame 040556/0141 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 24, 2016
From: WEAVER, MARK L.; PAOLA, VINCENT A.; CRAVENER, JOHN C.; RAGHUNATHAN, NARSIMHAN; NICHOLS, JUDODINE
To: ALCOA INC.
Reel/Frame 039001/0586 →
Continuity (2)
Provisional Application 62161097 · May 13, 2015
Related Publication 20160332928A1 · Nov 17, 2016
Cited By (2)
US 12,338,189 US 12,338,190