王亲猛
,
郭学益
,
田庆华
中国有色金属学报(英文版)
doi:10.1016/S1003-6326(17)60110-9
氧气底吹炉是一种类似诺兰达炉的卧式旋转反应器,但富氧空气从炉体底部喷入熔体.通过分析底吹熔炼特性,提出了氧气底吹炼铜机理.在机理模型中,底吹炉内由上到下分成7个功能层,分别是烟气层、矿料分解过渡层、渣层、造渣过渡层、造锍过渡层、弱氧化层和强氧化层;沿轴线方向分成3个功能区,分别是反应区、分离过渡区、液相澄清区.模型中所有的层和区分别具有不同的作用.氧气底吹熔炼过程处于非稳态的近似多相平衡状态,且炉内不同空间位点的氧势、硫势呈梯度变化;通过合理控制不同层、区的氧势、硫势,可进一步提高氧气底吹炉的熔炼能力.
关键词:
氧气底吹炼铜
,
机理
,
多相平衡
,
氧势
,
硫势
,
SKS工艺
FANG Zheng CHEN Xinmin(H.M.Chen) Central South University of Technology
,
Changsha
,
China FANG Zheng
,
Associate Professor
,
Department of Chemistry
,
Central South University of Technology
,
Changsha
,
China
金属学报(英文版)
By taking the effect of oxygen contents into account,a new set of formulae which represents the oxygen potentials of H_2O-H_2 and H_2O-H_2-inerts gas mixtures has been derived.Classi- cal representation is only a particular case of it.Some of the variables affecting equilibrium atmosphere when trace oxygen is present and optimum preparation of the gas mixtures to min- imize errors have been discussed.The reliability of some of previous equilibrium experiments under the oxygen potentials controlled by H_2O-H_2 or H_2O-H_2-inerts gas mixtures has also been criticized.
关键词:
gas equilibration method
,
null
,
null
,
null
