The impact of reagents concentration on the efficiency of obtaining high-purity magnesium hydroxide

• Autorzy: Radomski Piotr , Jarosiński Andrzej , Wzorek Zbigniew , Nowak Anna K.

Identyfikatory

DOI

10.2478/pjct-2020-0019

• Języki publikacji: EN

Abstrakty

EN

The work presents the impact of reagents concentration and the drying process on the efficiency of obtaining magnesium hydroxide and its specific surface area. Magnesium sulphate(VI) within the concentration range of 0.7–2.0 mol/dm³  was used in the research as magnesium feedstock and sodium hydroxide was used as a precipitating agent within the same concentration range. The process of obtaining magnesium hydroxide was carried out with a 25% excess of the precipitating agent in relation to the reaction stoichiometry. The obtained suspension was separated by way of multi-stage sedimentation with the use of acetone and freezing samples. Depending on the concentration of reagents the efficiency of obtaining magnesium hydroxide fell within the range of 88–99%, whereas the specific surface area – within 115–609 m² /g, while the high purity of samples above 99% of magnesium hydroxide was maintained.

Słowa kluczowe

EN

magnesium hydroxide; precipitation method; inorganic flame retardants

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2020
• Tom: Vol. 22, nr 2
• Strony: 73--77
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Radomski Piotr

• Tadeusz Kosciuszko Cracow University of Technology, Faculty of Chemical Engineering and Technology, Warszawska 24, 31-155 Kraków, Poland

autor

Jarosiński Andrzej

• Polish Academy of Sciences, Mineral and Energy Economy Research Institute, Wybickiego 7, 31-261 Kraków, Poland

autor

Wzorek Zbigniew

• Tadeusz Kosciuszko Cracow University of Technology, Faculty of Chemical Engineering and Technology, Warszawska 24, 31-155 Kraków, Poland

autor

Nowak Anna K.

• Tadeusz Kosciuszko Cracow University of Technology, Faculty of Chemical Engineering and Technology, Warszawska 24, 31-155 Kraków, Poland

Bibliografia

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• 10. Pilarska, A., Linda, I., Wysokowski, M., Paukszta, D. & Jesionowski, T. (2012). Synthesis of Mg(OH)2 from magnesium salts and NH4OH by direct functionalisation with poly(ethylene glycols), Phys. Probl. Min.l Process. 48(2), 631–643.
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• 12. Jarosiński, A. & Radomski, P. (2011). Comparison of selected methods of industrial magnesium sulphate purification from iron compounds, Czasopismo Techniczne, 1-Ch/2011, 8(108), 71–77.
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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).