Stabilized compositions comprising ammonium nitrate
View Patent ↗Preferred aspects of the present invention provide ammonium nitrate compositions comprising ammonium nitrate and at least one stabilizing agent, and preferably a third compound. In certain preferred embodiments, the stabilizing agent, together with third compound, is present under conditions and in amounts effective to substantially reduce the detonation sensitivity of the composition and/or to otherwise improve a desired property of the composition.
1. A fertilizer composition comprising:
a double salt that includes ammonium nitrate and a compound selected from the group consisting of ammonium sulfate, ammonium phosphate, calcium nitrate, potassium nitrate, magnesium nitrate, ammonium molybdenate, ammonium hexaflouralsilicate, neodymium hydroxynitrate, and combinations of two or more thereof; and
at least one stabilizing agent selected from the group consisting of deoxidants and ammonium generating agents.
2. The fertilizer composition of claim 1 , wherein the at least one stabilizing agent is present in an amount of from about 0.1 wt % to about 20 wt %.
3. The fertilizer composition of claim 1 , wherein the at least one stabilizing agent is present in an amount of from about 0.1 wt % to about 10 wt %.
4. The fertilizer composition of claim 1 , wherein the at least one stabilizing agent is present in an amount effective to substantially reduce the detonation sensitivity of the composition relative to the detonation sensitivity of 2:1 ASN.
5. The fertilizer composition of claim 1 , wherein the at least one stabilizing agent is present in an amount of from about 0.1 wt % to about 2 wt %.
6. The fertilizer composition of claim 1 , wherein the at least one stabilizing agent comprises one or more metal salts, wherein the metal that forms the metal salt is selected from the group consisting of alkali metals from Period 3 or Period 4 of the periodic table and alkali earth metals from Period 3 or Period 4 of the periodic table.
7. The fertilizer composition of claim 6 , wherein the metal that forms the metal salt is selected from the group consisting of potassium, magnesium, calcium or combinations thereof.
8. The fertilizer composition of claim 7 , wherein the one or more metal salts is selected from the group consisting of KCl, MgSO 4 , CaCO 3 , MgCO 3 , dolomite (CaMgCO 3 ), Mg(NO 3 ) 2 , and combinations of two or more thereof of these.
9. The fertilizer composition of claim 1 , wherein the at least one stabilizing agent comprises at least one metal salt selected from the group consisting of metal halides, metal sulfates, metal, carbonates, metal nitrates, and mixtures thereof.
10. The fertilizer composition of claim 1 wherein the at least one stabilizing agent comprises at least one metal halide.
11. The fertilizer composition of claim 1 wherein the at least one stabilizing agent comprises at least one metal sulfate.
12. The fertilizer composition of claim 1 wherein the at least one stabilizing agent comprises at least one metal carbonate.
13. The fertilizer composition of claim 1 wherein the at least one stabilizing agent comprises at least one metal nitrate.
14. The fertilizer composition of claim 1 , wherein the at least one stabilizing agent is selected from the group consisting of active silica, magnesium nitrate, magnesium sulfate, potassium chloride, calcium carbonate, magnesium carbonate, water, dolomite, oxalic acid, formic acid, salts of tartaric acid, carbodiamides, biguanides, di-cyan di-amide, calcium carbonate, thio urea, urea, semicarbazide, centralite, urethane, diphenyl, diphenylamine, naphthylamine, aminophenol, benzoic acid, pyrocatechin, phenylenediamine hexamine, (NH 4 ) 2 C 2 O 4 —H 2 O, NH 4 , LiF, and combinations thereof of these.
15. The fertilizer composition of claim 1 , wherein the at least one stabilizing agent is selected from the group consisting of thiourea, silicon oxides, ammonium salts, and combinations of two or more thereof.
16. The fertilizer composition of claim 1 , wherein the at least one stabilizing agent comprises SiO 2 .
17. The fertilizer composition of claim 1 , wherein the composition has a single salt ammonium nitrate composition of about 0 to 1 wt. %, based on the total weight of the composition.
18. The fertilizer composition of claim 1 , wherein the double salt that includes ammonium nitrate and a compound selected from the group consisting of ammonium phosphate, potassium nitrate, magnesium nitrate, ammonium molybdenate, ammonium hexaflouralsilicate, neodymium hydroxynitrate, and combinations of two or more thereof.
19. A method of forming a fertilizer composition comprising the step of combining:
a first composition comprising a double salt that includes ammonium nitrate and a compound selected from the group consisting of ammonium sulfate, ammonium phosphate, calcium nitrate, potassium nitrate, magnesium nitrate, ammonium molybdenate, ammonium hexaflouralsilicate, neodymium hydroxynitrate, and combinations of two or more thereof; and
a second composition including at least one stabilizing agent selected from the group consisting of deoxidants and ammonium generating agents.
20. The method of claim 19 , wherein the combined fertilizer composition has a single salt ammonium nitrate composition of about 0 to 1 wt. %, based on the total weight of the composition.