N-containing/humic fertilizer and preparing methods thereof
AssigneeHuma, Inc.
InventorRichard T. Lamar
Life of this patent
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Abstract
Methods of making N-containing component/humic substance fertilizers and resulting fertilizers are described. In one example, a method of making N-containing component/humic substance fertilizers includes the steps of adding 20-35 weight percent of humic substance to molten N-containing component, for example urea, and mixing under high shear. In another example, a method of making includes the steps of mixing 20 to 35 weight percent humic substance with a N-containing component and heating to form a molten mixture. Methods of making N-containing component/humic substance fertilizers.
Claims20
A method comprising the steps of:
- heating a solid nitrogen-containing component;
- adding a particulate humic substance having a mean particle size of less than 35 μm to the molten nitrogen-containing component in the amount of 10 to 35 weight percent based on the total weight of the nitrogen-containing component and the humic substance;
- mixing the molten nitrogen containing component and the humic substance under high shear to form a substantially uniform molten fertilizer mixture;
- forming fertilizer granules of the molten fertilizer mixture;
- and
- actively cooling the fertilizer granules.
A fertilizer comprising:
- granules comprising 10 to 35 percent by weight of a humic substance and 65 to 85 percent by weight of a nitrogen-containing component, the or granules made by heating a solid nitrogen-containing component;
- adding a particulate humic substance having a mean particle size of less than 35 μm to the heated nitrogen-containing component in the amount of 10 to 35 weight percent based on the total weight of the nitrogen-containing component and the humic substance;
- mixing the heated nitrogen containing component and the humic substance under high shear to form a substantially uniform fertilizer mixture;
- forming granules from the fertilizer mixture;
- and
- actively cooling the granules.
A method comprising the steps of:
- mixing 10 to 35 weight percent nitrogen-containing component with 65 to 90 weight percent of a humic substance having a mean particle size of less than 35 μm to form a mixture;
- heating the mixture to form a liquid mixture;
- forming granules from the molten mixture;
- and
- actively cooling the granules.
Dependencies are inferred from the claim text.