<abstract xmlns="http://www.w3.org/1999/xhtml"><p>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/dm<sup>3</sup> 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.</p></abstract>

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.

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

Tadeusz Kosciuszko Cracow University of Technology

Faculty of Chemical Engineering and Technology

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The work presents the impact of reagents concentration and the drying process on the efficiency of obtaining magnesium hydroxide and its specific surface area....

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

Published Online: May 13, 2020

Page range: 73 - 77

DOI: https://doi.org/10.2478/pjct-2020-0019

Keywords
magnesium hydroxide, precipitation method, inorganic flame retardants

© 2020 Piotr Radomski et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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

Published Online: May 13, 2020

Page range: 73 - 77

DOI: https://doi.org/10.2478/pjct-2020-0019

Keywordsmagnesium hydroxide, precipitation method, inorganic flame retardants

© 2020 Piotr Radomski et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
magnesium hydroxide, precipitation method, inorganic flame retardants