Micronutrient fertilizers and methods of making and using the same
AssigneeAgtec Innovations, Inc.
InventorChandrika VARADACHARI
Life of this patent
Estimating the term…
Abstract
A water insoluble micronutrient fertilizer, methods of producing, and methods of using the same are provided. The fertilizer may comprise at least one first micronutrient selected from the group consisting of chromium, cobalt, copper, iron, manganese, and zinc; a polyphosphate; and optionally at least one second micronutrient selected from the group consisting of boron, chlorine, iodine, molybdenum or selenium. The fertilizer compounds are preferably water insoluble, dilute acid soluble, and free-flowing powders
Claims24
A method of producing a fertilizer comprising:
- a. combining at least one lesser reactive metal compound, phosphoric acid optionally heated, and optionally sulfuric acid and optionally water, and optionally at least a first secondary micronutrient to form a first mixture;
- b. heating the first mixture to a temperature between about 90° C. and about 165° C.;
- c. optionally combining at least one higher reactive metal compound, and optionally secondary micronutrients and optionally water, to the first mixture to form a second mixture;
- d. heating the second mixture to a temperature between about 90° C. and about 165° C.;
- e. optionally combining at least one higher reactive metal compound, and optionally at least a second secondary micronutrient and optionally water, to the second mixture to form a third mixture;
- f. heating the third mixture to between about 90° C. and about 165° C.;
- and
- g. discontinuing the step of heating the third mixture to between about 100° C. and about 140° C. when the third mixture is soluble in 2 wt. % citric acid.
2-4. (canceled)
(canceled)
The method of producing a fertilizer of claim 4, wherein a sufficient amount of neutralizing base is added to bring the pH of the third mixture to between about 3 and about 7, alternatively between about 4 and about 4.5.
The method of producing a fertilizer of claim 4, wherein the dried and neutralized third mixture is ground to a powder having an average particle size of less than about 100 mesh.
A fertilizer comprising:
- a. at least one first micronutrient selected from the group consisting of chromium, cobalt, copper, iron, manganese, and zinc;
- b. a polyphosphate, wherein the fertilizer is water insoluble, dilute acid soluble, and free-flowing powder;
- and
- c. optionally at least one second micronutrient selected from the group consisting of boron, chlorine, iodine, molybdenum or selenium.
(canceled)
24-25. (canceled)
A fertilizer in solid form, the fertilizer comprising a micronutrient metal polyphosphate composition, the micronutrient metal polyphosphate composition being water-insoluble and 2 wt. % citric acid soluble, the micronutrient metal polyphosphate composition comprising iron, manganese or copper as micronutrients, wherein the micronutrient metal polyphosphate composition is characterized by having an X-ray diffraction reflection at one or more of the following positions:
- 8.17 (±0.09), 5.98 (±0.03), 5.16 (±0.03), 4.82 (±0.025), 4.52 (±0.025), 4.27 (±0.02), 4.16 (±0.02), 3.48 (±0.01), 3.44 (±0.01), 2.87 (±0.009), 2.85 (±0.009), 2.59 (±0.007), 2.57 (±0.007), 2.52 (±0.007), 2.15 (±0.005), 1.96 (±0.004), and 1.75 (±0.003) Å.
27-34. (canceled)
Dependencies are inferred from the claim text.