Obtaining magnesium hydroxide of micro- or nanostructure on the basis of technical raw materials

Radomski Piotr, Jarosiński Andrzej () and Madejska Lucyna
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Radomski Piotr: Ph.D. Eng., Cracow University of Technology, Kraków, Poland
Jarosiński Andrzej: D.Sc. Eng., Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Kraków, Poland
Madejska Lucyna: Ph.D. Eng., Cracow University of Technology, Kraków; Poland

Gospodarka Surowcami Mineralnymi / Mineral Resources Management, 2014, vol. 30, issue 4, 9

Abstract: This paper presents the initial results of efforts to obtain high-purity magnesium hydroxide with micro or nano-structure from technical raw materials. Magnesium hydroxide can be used in the plastic industry as a flame retardant additive. Mg(OH)2 should be characterized by high surface area (above 100 m2/g), high disintegration, and high purity. In the research, technical magnesium sulfate was used which was purified by hydrolytic methods before obtaining the magnesium hydroxide. Heptahydrate, the specific raw material for magnesium hydroxide synthesis, was crystallized from purified solutions. The study was conducted for magnesium sulfate concentration in an interval of 0.2-2.0 mol/dm3 and a sodium hydroxide interval of 0.4-0.5 mol/dm3. The precipitate was analyzed by the SEM method and BET, and its purity was tested using the colorimetric technique.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:vrs:gosmin:v:30:y:2014:i:4:p:9:n:4

DOI: 10.2478/gospo-2014-0035

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