PL42391B1 - - Google Patents
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- Publication number
- PL42391B1 PL42391B1 PL42391A PL4239158A PL42391B1 PL 42391 B1 PL42391 B1 PL 42391B1 PL 42391 A PL42391 A PL 42391A PL 4239158 A PL4239158 A PL 4239158A PL 42391 B1 PL42391 B1 PL 42391B1
- Authority
- PL
- Poland
- Prior art keywords
- solution
- crystalline
- fluosilicate
- magnesium
- zinc
- Prior art date
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- 239000000243 solution Substances 0.000 claims description 12
- -1 magnesium fluoro silicates Chemical class 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000003337 fertilizer Substances 0.000 claims 1
- 239000012047 saturated solution Substances 0.000 claims 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910003638 H2SiF6 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910004014 SiF4 Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229940104869 fluorosilicate Drugs 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- ZEFWRWWINDLIIV-UHFFFAOYSA-N tetrafluorosilane;dihydrofluoride Chemical compound F.F.F[Si](F)(F)F ZEFWRWWINDLIIV-UHFFFAOYSA-N 0.000 description 1
Description
Opublikowano dnia 15 pazdziernika 1959 r.POLSKIEJ RZECZYPOSPOLITEJ LUDOWEJ OPIS PATENTOWY Nr 42391 K1.43-4JeLq4 Instytut Kirasu Siarkomego i Naiuozóiu Fosforowych *) Warszawa, Polska Sposób wylwarxaniq krystalicznych fluorokrzemianów cynkowego i magnezowego Patent trwa od dnia 17 kwietnia 1958 r.Znany jest sposób wytwarzania fluorokrze¬ mianów magnezowego i cynkowego zarówno w postaci roztworów wodnych, jak i w postaci soli krystalicznych.Krystaliczne fluorokrzemiany magnezu i cyn¬ ku otrzymuje sie przez odparowywanie ich roz¬ tworów i krystalizacje.Wynalazek pozwala na otrzymywanie krysta¬ licznego MgSiFH • 6H.p i ZnSiF^ • 6H20 z pomi¬ nieciem odparowywania roztworu i operacji zwiazanych z krystalizacja.Sposób wedlug wynalazku polega na tym, ze w nasyconym wodnym roztworze fluorokrze¬ mianu cynkowego lub magnezowego absorbuje *) Wlasciciel patentu oswiadczyl, ze wspól¬ twórcami wynalazku sa mgr Bohdan Zawadzki i mgr Anna Bulinska. sie czterofluorek krzemu. W wyniku tego pro¬ cesu powstaje kwas fluorokrzemowy 3SiF, + 2HO 2H2SiF6 + SiQ2 który obniza rozpuszczalnosc fluorokrzemianu i powoduje wytracanie sie jego w postaci kry¬ stalicznej soli szesciowodnej.Przyklad. Do 24%-wego roztworu MgSiFe wprowadza sie SiF4 w ilosci takiej, aby stezenie powstalego H2SiF6 wynosilo 12°/o. Z 1 1 roztworu otrzymuje sie okolo 200 g krystalicznego MgSiF6 • 6H2Ot przy czym proces prowadzi sie w temperaturze 20°C.Krystaliczny produkt oddziela sie od roztwo¬ ru i znajdujacej sie w nim zawiesiny koloidal¬ nej krzemionki przez dekantacje, a nastepnie odwirowuje. Znajdujacy sie w roztworze po- krystalicznym kwas fluorokrzemowy zobojetniasie za pomoca weglanu lub tlenku magnezowe¬ go lub cynkowego, wedlug nastepujacych reakcji: H2 SiFG J!HVEgCOa » MgSiFG + H20 + C02 H., SiFp + ZnO t ZnSiF,. + HO 2 G i b 2 Po zobojetnieniu, zawiesine krzemionki i in¬ nych nierozpuszczalnych zanieczyszczen, oddzie¬ la sie od roztworu np. przez odsaczenie.Oczyszczony roztwór zawraca sie w obiegu zamknietym do absorbcji SiF^ PLPublished on October 15, 1959 OF THE POLISH PEOPLE'S REPUBLIC PATENT DESCRIPTION No. 42391 K1.43-4JeLq4 Kiras Sulfur and Phosphorus Institute *) Warsaw, Poland The method of casting crystalline zinc and magnesium fluorosilicates is issued on April 17, 1958 The patent is valid from April 17, 1958. magnesium and zinc fluorosilicates, both in the form of aqueous solutions and in the form of crystalline salts. Crystalline magnesium and zinc fluorosilicates are obtained by evaporation of their solutions and crystallization. The invention allows the preparation of crystalline MgSiFH. 6H. and ZnSiF. • 6H2O excluding the evaporation of the solution and the operations associated with crystallization. The method according to the invention consists in the fact that in a saturated aqueous solution of zinc or magnesium fluorosilicate it absorbs *) The proprietor of the patent stated that the authors of the invention are mgr Bohdan Zawadzki and mgr Anna Bulinska. silicon tetrafluoride becomes. As a result of this process, 3SiF, + 2HO 2H2SiF6 + SiQ2 fluorosilicic acid is formed, which lowers the solubility of the fluorosilicate and causes its precipitation as a crystalline hexahydrate salt. SiF4 is introduced into a 24% MgSiFe solution in an amount such that the concentration of the formed H2SiF6 is 12%. About 200 g of crystalline MgSiF6. 6H2Ot are obtained from 1 liter of the solution, the process being carried out at a temperature of 20 ° C. The crystalline product is separated from the solution and the colloidal silica suspension contained therein by decantation and then centrifuged. Fluosilicic acid in the post-crystalline solution neutralized with carbonate or magnesium or zinc oxide according to the following reactions: H2 SiFG J! HVEgCOa »MgSiFG + H20 + CO2 H., SiFp + ZnO t ZnSiF ,. + HO 2 G and b 2 After neutralization, the silica suspension and other insoluble impurities are separated from the solution, e.g. by filtration. The purified solution is recycled in a closed circuit to absorb SiF
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL42391B1 true PL42391B1 (en) | 1959-08-15 |
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