US 2019/0292113 A1 · Manufacturing Process and Products Combining Synthetic Gypsum Fertilizer with Elemental Sulfur for Increased Fertilizer Use Efficiency

Abstract

A new fertilizer composed of calcium sulfate and elemental sulfur, with total sulfur analysis ranging from 30-50%. The new fertilizer will contain both sulfur in the sulfate form for prompt uptake by the crop, along with elemental sulfur which will slowly convert to sulfate sulfur, providing season-long crop nutrition. The new fertilizer will deliver improved environmental benefits by reducing nitrogen runoff that can occur from the use of ammonium sulfate. It will also deliver economic benefits for farmers because they are not paying for nitrogen in ammonium sulfate that will likely not be available for the needs of their spring crop. A manufacturing process that safely and economically sources and adds elemental sulfur to synthetic gypsum prior to being formed into pellets via an extruder, agglomerator or briquetter.

Claims13

Dependent claims

A mixture with improved sulfur release property comprising:

a mixture of raw synthetic gypsum of about 60% to 80% by weight and about 20% to 40% elemental sulfur by weight for a resultant overall sulfur content in sulfate form and elemental sulfur of about 30% to 50% by weight;
wherein the mixture comprises a binder comprising at least polysaccharide or biogum, said forming device mixing and extruding the mixture, said mixed and extruded mixture comprising 9-12% of water by weight;
and
wherein the binder comprises paper mill residue of about 2% to 5% by weight to the mixture.

1 more element

Dependencies are inferred from the claim text.

Manufacturing Process and Products Combining Synthetic Gypsum Fertilizer with Elemental Sulfur for Increased Fertilizer Use Efficiency

Life of this patent

Manufacturing Process and Products Combining Synthetic Gypsum Fertilizer with Elemental Sulfur for Increased Fertilizer Use Efficiency

Life of this patent

Abstract

Claims13