Dissolution behavior and stabilization of fluorine in secondary refining slags

Hideaki Suito, Ryo Inoue

研究成果: Article査読

25 被引用数 (Scopus)

抄録

Dissolution of fluorine in secondary refining and synthetic CaO-SiO2-Al2O3(-P2O5) slags has been studied by using the shaking test and its behavior is discussed based on the results for the time dependence of Ca, Si, Al and F contents in aqueous solution. It was found that fluorine dissolution is affected by the contents of SiO2, F and total Fe in slag and particularly its effect is obvious in synthetic slags. The dissolved fluorine from slags with low contents of SiO2 and total Fe can be immobilized through the incorporation of fluorine into precipitated hydrates such as CaO-Al2O3-H2O compound and CaO-SiO2-Al2O3-H2O gel. In the case of slags with high SiO2 and low total Fe contents, the dissolved fluorine can be immobilized through the formation of CaO-SiO2-H2O-SO4-F gel by the addition of gypsum to aqueous solution. The dissolution behavior of fluorine in seawater has been also studied.

本文言語English
ページ(範囲)921-929
ページ数9
ジャーナルIsij International
42
8
DOI
出版ステータスPublished - 2002

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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