多段式連続選択酸化プロセスによる含 Nb 溶銑の精錬(新プロセス技術)(<特集>製銑技術の拡大と高度化)

概要

論文の詳細を見る
The extraction of Nb from the pig iron containing Nb, which is produced in Baotou, Inner Mongolia, China has been jointly investigated by National Research Institute for Metals, Japan and Beijing University of Iron and Steel Technology, China. By the use of 2 stage tank type continuous selective oxidation furnaces in series, where the most of Si and a part of Mn were removed in the 1st stage and Nb was selectively oxidized in the 2nd stage, the optimum refining conditions to obtain high Nb content slag in the 2nd stage were found out. Through the operations of 11 times the slag holding Nb_2O_5 of as high as 7 to 10% was constantly produced at the recovery rate over 70%. This is due to the adoption of continuous refining process.
社団法人日本鉄鋼協会の論文
1987-11-01