<報文>銅製錬スラグ添加による高炉スラグの改質について

概要

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The experiment was carried out to prevent sulfur in iron blast furnace slags from dissolving in water. Sulfur compounds in iron blast furnace slags were determined by using an electron probe X-ray microanalyzer. The compounds were CaS and (Mn, Fe) S. It is possible to prevent sulfide from dissolving in water if all the sulfides in slags are converted into ferrous sulfide which is insoluble in water. The ratio of activity of FeS to activity of CaS at 1500℃ in CaO-Al_2O_3-SiO_2 molten slag (CaO/SiO_2=1) was 94.5 a_<FeO> under the equilibrium conditions. Accordingly, sulfur in slags can be precipitated as ferrous sulfide with an addition of iron-containing materials to molten slags. It has been confirmed experimentally that sulfide in solidified slags is converted into ferrous sulfide with an addition of L.D. converter slag, millscale or copper smelting slag as iron-containing materials.
東北大学の論文
1980-09-30