Article ID
96BEN41004
Title
Removal of copper from steel scraps by NH_{3} gas
アンモニアによる鉄スクラップからの銅の除去
Author(s)
Ryosuke O. Suzuki
Toshitsugu Hidani
Koji
Takemura
Katsutoshi ONO
鈴木亮輔
日谷知嗣
竹村康司
小野勝敏
Publication/Publisher
Metals & Technology, pp. 55--66, August,
1996.
金属, 55--66頁, 1996年8月臨時増刊号
Abstract
A concept for copper removal from the molten steel was proposed
to recycle the car scraps to a fresh steel sheet suitable to a new car body.
Evaporation of copper by blowing NH_{3} gas onto molten pure copper was found
and shown visually by the laser-light sheet method. This evaporation rate was
significantly larger than the theoretical maximum evaporation rate under the
vacuum, and several possible mechanisms were discussed in detail. The copper
removal from the molten steel was confirmed experimentally by blowing of NH_{3}
under the reduced pressure. This decuprization was ten times faster than the
vacuum degassing. The industrial applicability and efficiency were simulated and
discussed.