"The influence of calcium dihydrogen phosphate upon Kola apatite decomposition by orthophosphoric acid" . "S" . "Sedl\u00E1\u0159ov\u00E1, Ivona" . . "Rozklad fosf\u00E1t\u016F kyselinou trihydrogenfosfore\u010Dnou m\u00E1 velk\u00FD v\u00FDznam v pr\u016Fmyslov\u00E9 v\u00FDrob\u011B fosfore\u010Dn\u00FDch hnojiv. Tento proces p\u0159edstavuje vstupn\u00ED technologickou operaci, p\u0159i kter\u00E9 doch\u00E1z\u00ED k p\u0159eveden\u00ED vodonerozpustn\u00E9 formy fosforu na vodorozpustnou a t\u00EDm pro rostliny asimilovatelnou. Tato pr\u00E1ce se zab\u00FDv\u00E1 studiem vlivu produktu dihydrogenfosfore\u010Dnanu v\u00E1penat\u00E9ho na rozklad apatitu Kola super kyselinou trihydrogenfosfore\u010Dnou. Jedn\u00E1 se o reakci mezi kapalnou a pevnou f\u00E1z\u00ED, kter\u00E1 je vedena tak, \u017Ee v\u0161echny vznikaj\u00EDc\u00ED produkty jsou v syst\u00E9mu rozpu\u0161t\u011Bny. V\u0161echny experimenty byly prov\u00E1d\u011Bny ve vs\u00E1dkov\u00E9m izotermn\u00EDm m\u00EDchan\u00E9m reaktoru pro po\u010D\u00E1te\u010Dn\u00ED f\u00E1zi rozkladu s \u00FAzkou frakc\u00ED \u010D\u00E1stic apatitu Kola super. Kyselina trihydrogenfosfore\u010Dn\u00E1 s rozpu\u0161t\u011Bn\u00FDm dihydrogenfosfore\u010Dnanem v\u00E1penat\u00FDm byla pou\u017Eita v dostate\u010Dn\u011B velk\u00E9m p\u0159ebytku, a to tak, \u017Ee se jej\u00ED koncentrace b\u011Bhem reakce prakticky nem\u011Bnila. Pr\u016Fb\u011Bh rozkladu byl sledov\u00E1n v\u00E1\u017Een\u00EDm nezreagovan\u00E9ho zbytku apatitu po p\u0159eru\u0161en\u00ED reakce. V\u00FDsledkem experiment\u00E1ln\u00EDch m\u011B\u0159en\u00ED jsou z\u00E1vislost"@cs . "dissolution of apatite; reaction kinetics; orthophosphoric acid; calcium dihydrogen phosphate"@en . "3"^^ . "RIV/60461373:22310/08:00020349!RIV09-MSM-22310___" . . . "Praha" . "2"^^ . . . "Vliv dihydrogenfosfore\u010Dnanu v\u00E1penat\u00E9ho na pr\u016Fb\u011Bh rozpou\u0161t\u011Bn\u00ED apatitu Kola kyselinou trihydrogenfosfore\u010Dnou"@cs . "The decomposition of phosphates by orthophosphoric acid has a great importance in manufacturing of phosphoric fertilizers. This process is an initial technological operation during which water-insoluble form of phosphorus is converted into a water-soluble form, which is assimilable for plants. This work deals with a study of product calcium dihydrogen phosphate upon Kola apatite decomposition by orthophosphoric acid. It is reaction between solid and liquid phase, which is controlled in a way that all formation products are dissolved in system. All experiments were carried out in the batch isothermal stirred reactor for the initial phase of the decomposition with narrow fraction of apatite Kola super particles. Orthophosphoric acid with dissolved calcium dihydrogen phosphate was used in a great excess. The course of the decomposition was observed by weighing of the non-reacted residual of the apatite after termination of the reaction. The dependencies of conversion degree on the time resulted from expe" . "Praha" . "RIV/60461373:22310/08:00020349" . . . "Gabri\u0161, David" . . . "22310" . "The influence of calcium dihydrogen phosphate upon Kola apatite decomposition by orthophosphoric acid"@en . "The influence of calcium dihydrogen phosphate upon Kola apatite decomposition by orthophosphoric acid" . "The decomposition of phosphates by orthophosphoric acid has a great importance in manufacturing of phosphoric fertilizers. This process is an initial technological operation during which water-insoluble form of phosphorus is converted into a water-soluble form, which is assimilable for plants. This work deals with a study of product calcium dihydrogen phosphate upon Kola apatite decomposition by orthophosphoric acid. It is reaction between solid and liquid phase, which is controlled in a way that all formation products are dissolved in system. All experiments were carried out in the batch isothermal stirred reactor for the initial phase of the decomposition with narrow fraction of apatite Kola super particles. Orthophosphoric acid with dissolved calcium dihydrogen phosphate was used in a great excess. The course of the decomposition was observed by weighing of the non-reacted residual of the apatite after termination of the reaction. The dependencies of conversion degree on the time resulted from expe"@en . "372052" . . . "978-80-02-02047-9" . "V\u00EDdensk\u00FD, Jan" . "Process Engineering Publisher" . "Vliv dihydrogenfosfore\u010Dnanu v\u00E1penat\u00E9ho na pr\u016Fb\u011Bh rozpou\u0161t\u011Bn\u00ED apatitu Kola kyselinou trihydrogenfosfore\u010Dnou"@cs . "4"^^ . . . "The influence of calcium dihydrogen phosphate upon Kola apatite decomposition by orthophosphoric acid"@en . "2008-08-24+02:00"^^ . . . . "[34B00D9ADD42]" . "CD-ROM of Full Texts CHISA 2008" . .