高炭素フェロマンガン製造用マンガン鉱石について : マンガン鉱石の性状および還元に関する研究 I

概要

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To study on the reducibility of some manganese ores which are used for ferromanganese production, we investigated their properties in the first place. We obtained the following results of X- ray diffraction, differential thermal analysis and thermal balance analysis. (1) Foreign ores are mostly MnO_2 ores, and their attendant minerals are MnO・OH, 3Mn_2O_3・MnSiO_3, hydrated Mn oxide, SiO_2, etc. MnO_2 ores have α-, β-, γ- and/or δ-phases and most of them are these mixtures. (2) In every MnO_2 ore, γ- and δ-phases are incompletely crystalline, and they are reduced to Mn_2O_3 or Mn_3O_4 easily at comparative low temperature. Ghana ore, which is γ-MnO_2, belongs to the above group, and is expected to have high reducibility. (3) Domestic ores are mostly manganese carbonate ores or silicate ores, and mineral compositions of burnt ores represent variations in the burning temperature and atmosphere. (4) Quantitative studies on such mineral compositions will be continued futhermore.
社団法人日本鉄鋼協会の論文
1963-07-01