Inorganic Chemicals Industry >

2022 , Vol. 54 >Issue 1: 39 - 44

DOI: https://doi.org/10.19964/j.issn.1006-4990.2021-0154

Research & Development

Study on preparation of hexagonal plates of magnesium hydroxide by light-burned magnesium oxide

  • Huimin KONG ,
  • Laixi ZOU ,
  • Yuan LIU ,
  • Yuwei CAO ,
  • Yanjun LIN ,
  • Xianping LUO
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  • 1. Western Mining Group Co.Ltd,Qinghai Provincial Key Laboratory of plateau Comprehensive Utilization and Mineral processing Engineering,Xining 810000,China
    2. Qinghai Nonferrous Mineral Resources Engineering Technology Research Center
    3. Beijing University of Chemical Technology
    4. Jiangxi University of Science and Technology,Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control

Received date: 2021-03-16

  Online published: 2022-03-14

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Abstract

Hexagonal plates of magnesium hydroxide was prepared from salt lake light-burned magnesia with different grain size by hydration-hydrothermal method.The influence of reaction temperature,reaction time,stirring rate and solid-liquid ratio on the conversion rate of magnesia,the morphology and particle size of magnesium hydroxide was investigated systematically. The phase,morphology and particle size of magnesium hydroxide were investigated by X-ray diffraction（XRD）,scanning electronic microscope（SEM）,and laser particle size analyzer（LPSA） respectively.Meanwhile,magnesium hydroxide from di-fferent raw materials was added in PE to test its flame retardancy.The results showed that by controlling the reaction tempera-ture,reaction time,stirring speed and solid-liquid ratio,the hydration rate of magnesium oxide raw powder could reach 95%,the hydration rate of magnesium oxide fine grinding powder could reach 100%,and the obtained magnesium hydroxide was both hexagonal,but the particle size was different.When it was used in PE,fine-grained magnesium hydroxide had better dispersion and more obvious flame retardant performance.

Key words： light-burned magnesia; hexagonal plates; magnesium hydroxide; flame retardant; hydrothermal

Cite this article

Huimin KONG , Laixi ZOU , Yuan LIU , Yuwei CAO , Yanjun LIN , Xianping LUO . Study on preparation of hexagonal plates of magnesium hydroxide by light-burned magnesium oxide[J]. Inorganic Chemicals Industry, 2022 , 54(1) : 39 -44 . DOI: 10.19964/j.issn.1006-4990.2021-0154

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