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US 11,806,689 B2Granted
Method of making a fertilizer seed core
AssigneeSabic Global Technologies B.V.
InventorsSatish Burla, Rajamalleswaramma Koripelly, Gurumallappa Yoganand, Samik Gupta, Sabeshan Kanagalingam
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Abstract
Described herein is a method of making a fertilizer granule. The method includes supplying a fertilizer component, an liquid component, a binder and a filler to a zoned extruder comprising a die head, a screw, and at least three zones; mixing the fertilizer component, liquid component, binder and filler to yield a thixotropic mixture; and passing the thixotropic mixture through the die head.
Claims20
A method of making a fertilizer seed core, the method comprising:
- supplying a fertilizer component, a liquid component, a binder and a filler to a zoned extruder comprising a die head, a screw, and at least three zones;
- supplying the fertilizer component and the binder to the extruder and supplying the liquid component to the extruder following the fertilizer component and the binder;
- mixing the fertilizer component, the liquid component, the binder and the filler to yield a thixotropic mixture comprising equal distribution of the fertilizer component, the liquid component, the binder and the filler;
- and
- passing the thixotropic mixture through the die head, wherein the die head comprises openings 0.5 to 4 millimeter in diameter and wherein either one or both of the end of the screw is 1-15 millimeters from the die head and/or the extrusion process has a residence time of 5 to 15 minutes.
2 more elements
Dependencies are inferred from the claim text.