Abstract:
Procedimiento para la obtención de una solución hipertónica tamponada y solución obtenida, siendo del tipo de soluciones salinas que presentan un pH constante y son aptas para su aplicación terapéutica, comprendiendo el procedimiento la adición simultánea, a distinta velocidad, de ácido fosfórico (3) e hidróxido sódico (4), sobre agua desionizada (2) contenida en un reactor (1), obteniendo una solución acuosa de fosfato bisódico y fosfato monosódico, en una proporción de 1:2 en dicha solución.
Abstract:
The invention provides a continuous process for manufacturing an essentially neutral phosphorus/potassium rich fertilizer from basic chemical commodities. The fertilizer is a freely-flowing particulate solid.
Abstract:
A novel melt crystallization method for forming crystalline trisodium phosphate hydrates from a sodium phosphate solution on a contacting surface. The contacting surface is maintained at a temperature below the melt temperature of the crystalline trisodium phosphate solution. The solution, upon contact with the contacting surface, crystallizes into one of the hydrated forms of crystalline trisodium phosphate.
Abstract:
The invention provides a continuous process for manufacturing a phosphorus/potassium fertilizer from basic chemical commodities. The fertilizer is a free-flowing solid, stable on storage, consisting mainly of a phosphate of formula ΚΗ 5 (Ρ0 4 ) 2.
Abstract:
A method for making high-purity phosphated alkaline salts, particularly a tripolyphosphate, by reacting phosphoric acid with an aqueous solution of an alkaline silicate such as a sodium, potassium or lithium silicate, to give the corresponding phosphated salt along with micro-amorphous silica which retains most of the impurities contained in the phosphoric acid used, whereafter the resulting phosphated salt and silica are separated.
Abstract:
A process for the co-production of gaseous HCI and a salt product comprising a cation and an anion, which process comprises the steps of a. providing an aqueous solution comprising protons, chloride anions, and cations and anions of the salt product, b. bringing the solution into contact with a substantially immiscible extractant, the extractant comprising: 1) an oil soluble amine, which amine is substantially water insoluble both in free and in salt form; and 2) a carrier solvent for the amine; whereupon HCI selectively transfers to the extractant to form an HCI- carrying extractant and a chloride depleted aqueous solution containing the salt product; c. separating the HCI-carrying extractant from the chloride-depleted aqueous solution; and d. distilling HCI from the separated HCI-carrying extractant to form gaseous HCI and HCI depleted extractant.
Abstract:
A novel method for producing incongruently-soluble alkali metal acid phosphates in a solution crystallization process by incorporating a phosphate wash solution. The phosphate wash solution improves product purity by removing entrained free acid from the surface of the incrongruently-soluble phosphate crystals. Thus, the wash improves the physical propterties of the crystals, such as the hygroscopicity and handling characteristics. The phosphate wash solution significantly reduces the amount of crystals dissolved during the washing step and therefore results in significantly higher product recoveries when compared to conventional crystal washing techniques. Additionally, a solution crystallization method is disclosed for producing mixed cation, incongruently-soluble phosphate crystals. The process utilizes a reaction mixture having an excess of the theoretical molar amount of phosphorus required for the incongruently soluble phosphate salt. The entrained free acid from the excess amount of phosphorous is then washed from the crystal surface utilizing a phosphate solution.
Abstract:
The invention provides a continuous process for manufacturing a phosphorus/potassium fertilizer from basic chemical commodities. The fertilizer is a free-flowing solid, stable on storage, consisting mainly of a phosphate of formula &Kgr;&EEgr;5(&Rgr;04)2.
Abstract:
Die Erfindung betrifft Lithiumdihydrogenphosphat, dessen Herstellung und dessen Verwendung bei der Herstellung von LiMePO4-Kathodenmaterial für Li-Ionen Akkumulatoren durch Umsetzung der Lithiumverbindung mit Phosphorsäure ohne zusätzliche Wasserzugabe. Zum Entfernen des durch die Phosphorsäure eingetragen Wassers wird die Neutralisationswärme, die bei der Umsetzung der beiden Komponenten entsteht genutzt. Das so hergestellte Lithiumdihydrogenphosphat ist besonders rein und damit für die Herstellung von LiMePCU-Kathodenmaterial sehr gut geeignet.
Abstract:
The present invention relates general to a method for making an alkali metal hydrogen phosphate of the general formula AxH3-XP04, wherein A is an alkali metal and 0 = 3, prepared by admixing an alkali metal-containing compound, a phosphate-supplying compound, and water, where water is present in the mixture at a level of from about 5% to 25% by weight.
Abstract translation:本发明一般涉及制备通式为A x H 3 -XPO 4的碱金属磷酸氢盐的方法,其中A为碱金属且0≤x≥3,通过混合含碱金属的化合物,磷酸盐 - 供应化合物和水,其中水以约5重量%至25重量%的水存在于混合物中。