Patent
A process for producing high-purity potassium salts
Marcus Vorage,Eichner Per +1 more
TLDR
In this article, a new selective process for producing high-purity potassium nitrate or potassium phosphate was proposed, which uses a liquid agricultural or fermentation byproduct, such as molasses, vinasse or potato thick juice as its potassium source and comprises the following unit operations: clarification, ion exchange, neutralization, concentration and crystallization.Abstract:
The present invention relates to a new selective process for producing high-purity potassium nitrate or potassium phosphate. The process uses a liquid agricultural or fermentation by-product, such as molasses, vinasse or potato thick juice as its potassium source and comprises the following unit operations: clarification, ion exchange, neutralization, concentration and crystallization. Importantly, the present invention also concerns a process for producing an ingredient for animal feed, said ingredient having a reduced potassium content.read more
Citations
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Journal ArticleDOI
Efficient and Cost Effective Way for the Conversion of Potassium Nitrate from Potassium Chloride Using Electrodialysis
TL;DR: In this article, a metathesis electrodialysis (MED) system for the conversion of potassium nitrate from potassium chloride is developed, which is carried out in recirculation mode using a four compartment electroconversion unit of 200 cm2 effective membrane area with 10 cell pairs.
Patent
Method of recovering phosphate for reuse as a fertilizer
TL;DR: A method for removing and recovering phosphorus from a spent adsorbent medium to result in a regenerated medium and a phosphorus-containing solution useful as a fertilizer was proposed in this article.
Patent
Dewatering of phosphate precipitates
TL;DR: In this paper, a process for the treatment of a precipitate starting material comprising magnesium ammonium phosphate, magnesium potassium phosphate or potassium phosphate, or any derivate thereof, or a mixture thereof, is described, wherein dewatering is performed by use of a hydrocyclone followed by the removal of excess water by filtration, and the product obtained is a powder product.
Patent
Method of treating substrates for bonding
TL;DR: In this article, a glass substrate having a fritted portion of a ceramic frit material and a non-fritted portion is treated for bonding. And the method further includes cleaning and activating the bondable surface for subsequent bonding.
Patent
Process for production of commercial quality potassium nitrate from polyhalite
Michael Bonan,Eyal Ginzberg,Akiva Mozes,Eyal Barnea,Hugo Keselman,Gideon Friedman,Ron Frim,Cornelis Petrus Langeveld +7 more
TL;DR: In this paper, a method for the production of KNO3 from polyhalite is presented, which comprises steps of decomposing poly-halite into syngenite, gypsum, and soluble components, treating the solid decomposition products sequentially with HNO3 and CaSO4.
References
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Patent
Continuous production of potassium nitrate via ion exchange
TL;DR: In this paper, a solution of potassium nitrate and dilute nitric acid is produced in a continuous liquid solid contacting apparatus, formed of a plurality of resin filled chambers which rotate in and out of periodic fluid communication with fixed feed and discharge ports.
Patent
Extraction of fertilizer salts and organic substances of high nutritive value from industrial waste waters
TL;DR: A process for obtaining fertilizer salts and organic substance concentrates of high nutritive value from industrial waste waters, in particular of waste waters of the agricultural, food processing and food preserving industries, with a high content of Totally Dissolved Solids (T.D.S.), is described in this article.
Patent
Process for production of dialkali metal phosphates by ion exchange
TL;DR: In this article, a process for the production of dialkali metal phosphates by ion exchange is described, which is carried out by first ammoniating a water-soluble phosphate source such as phosphoric acid or monocalcium phosphate.
Patent
Process for treating and recovering waste water from the fertilizer manufacture
TL;DR: In this paper, waste water from the manufacture of fertilizers with nitrogen and others is treated on ion-exchange resins and the resulting demineralized water is used as such.