ニッケル〓に関するX線研究 (第2報)
ニッケル精〓, 転炉〓および精〓焙焼物について
1959 年 75 巻 847 号 p. 40-42
詳細
1959 年 75 巻 847 号 p. 40-42
Chemical and mineral composition of the converter matte and refined matte and thermal change of refined matte were studied.
By the treatment of crude nickel matte in converter Fe first, then S and at last Ni component is oxidized according to the affinity of these component with oxygen. Principal mineral of the converter matte taken out from the converter during the procedure changed from FeS to pentlandite and at last to Ni3S2. Refined matte thus formed conststed of Ni3S2 and small amount of metallic Ni.
On Calcination in air the weight of the refined matte increased between 400 and 700°C owing to the formation of NiSO4. At the same time considerable amount of NiO was also formed. Above 750°C NiSO4 was almost decomposed to form NiO.
