Abstract: A granulated phosphate composition that provides sufficient nutritional value as well as enhanced pelleting benefits, such as abrasiveness and lubricity, compared to other granulated phosphate feed products. The granulated phosphate composition includes a phosphate source, such as monocalcium phosphate, mono-dicalcium phosphate, or dicalcium phosphate, and one or more additives such as lubricity and abrasivity additives. The lubricity additive can include a sodium additive that lubricates the die during a feed milling or pelleting process. The abrasivity additive can include silica or sand that scours the die during the pelleting process. The increased lubricity and abrasivity attributes of the composition benefits die throughput and efficiency in the pelleting process, without compromising nutritional value in the final feed product.

Abstract: A process and system for producing phosphoric acid. Phosphate rock is dissolved in phosphoric acid in a reaction vessel to form a slurry. The slurry is then reacted in a first stage of crystallization with sulfuric acid to produce calcium sulfate hemihydrate and phosphoric acid. The product acid is separated from the hemihydrates via filtration, and the filter cake is then reacted, in a second crystallization step, with additional sulfuric acid to produce dihydrate calcium sulfate (gypsum) and recovery solution. The gypsum is separated from the recovery solution via filtration and removed as a by-product. The recovery solution is recycled back to the transformation tank and to the hemihydrate filtration step. A feed acid tank combines wash solution, recovery solution and product acid. Once adjusted to a target P2O5 concentration, it is fed to the initial reactor vessel to dissolve the phosphate ore.

Abstract: Phosphatic clays, and the use of phosphatic clays as a soil wetting agent. Phosphatic clays as wetting agents aid in the retention of water in sandy soil, and/or for prevention or reduction of leaching of nutrients. Due to its unique particle size and shape, phosphatic clay exhibits high water absorbing and retaining qualities. Further, phosphatic clay is readily available as a by-product of mining of phosphatic ore. The phosphatic clay wetting agents increases the effectiveness of the water applied to the soil, thereby reducing the amount of run-off, and reducing the amount of water needed to accomplish sufficient irrigation. The phosphatic clay wetting agents can be delivered to the soil as a sprinkle-on product, spray-on product, soil amendment, fertilizer or seed coating, or fertilizer composition.

Abstract: An apparatus for separating a mineral from a slurry of mineral and impurities, including a fluid vessel having a first, open end and a second end and a feed well disposed near the first end. The feed well has a first, open end, for receiving the slurry, and a second end. At least one first member is received through the first ends of the vessel and the feed well for providing aerated water, creating a froth in the feed well including substantially the mineral. The mineral froth substantially separates from the impurities and floats out of the feed well towards the first end of the vessel, and a collection unit receives the mineral froth. The impurities and any remaining mineral fall toward the second end of the vessel. A measurement unit is placed within the vessel for measuring at least one of density and pressure of the fluid in the vessel.

Abstract: A granulated monocalcium phosphate composition that provides sufficient nutritional value as well as enhanced pelleting benefits, such as abrasiveness and lubricity, compared to other granulated phosphate feed products. The granulated monocalcium phosphate composition includes one or more additives such as lubricity and abrasivity additives. The lubricity additive can include a sodium additive that lubricates the die during a feed milling or pelleting process. The abrasivity additive can include silica or sand that scours the die during the pelleting process. The increased lubricity and abrasivity attributes of the composition benefits die throughput and efficiency in the pelleting process, without compromising nutritional value in the final feed product.