Slag Texture and Density Control Factor

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  • Hara Yu
    Chiba Prefectural Environmental Research Center, Waste and Chemicals Division
  • Tsutsumi Katsuhiro
    Chiba Prefectural Environmental Research Center, Waste and Chemicals Division
  • Yoda Hikotarou
    Chiba Prefectural Environmental Research Center, Waste and Chemicals Division

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  • 溶融スラグの組織と密度の規定因子
  • ヨウユウ スラグ ノ ソシキ ト ミツド ノ キテイ インシ

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Abstract

The density of molten slag showed a tendency to be higher compared to natural aggregate (about 2.5-2.6 g/cm3) . We carried out density measurements, polarized microscope observations, chemical analysis and X-ray diffraction analysis to identify the factors that determine molten slag density.<BR>We obtained the following results.<BR>1) The first factor that affects molten slag density is Fe2O3 content.<BR>2) The second factor that affects molten slag density is the minerals that crystallize in the slag.<BR>3) Density and minerals relations can be expressed adequatelyby classifying slag as non-crystallized slag, partially crystallized slag and crystallized slag.In cases when crystallized minerals such as Gehlenite, Augite and Hematite are in high concentration, the density of the slag is also high.

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