THERMODYNAMIC STUDY OF CHROMITE CAUSTICFUSION PROCESS
来源期刊：Acta Metallurgica Sinica2001年第1期
论文作者：S.L.Zheng Y.Zhang
Key words：chromite; oxidation; flowsheet; recycling; thermodynamic;
Abstract: A new method for chromate cleaning production named chromite caustic fusion pro-cess, is advanced by Institute of Chemical Metallurgy, the Chinese Academy of Sci-ences. With sodium hydroxide as reaction medium, the new process is composed ofthree procedures: liquid phase oxidation of chromite - metastable phase separation -carbonation ammonium transition. Generally illustrating the new process and its fea-tures, this paper mainly studies the thermodynamics of chromite oxidation. The newprocess has much better practical results than the conventional chromate productionprocess in which sodium carbonate is used as reaction medium. The superiority is alsoshown through thermodynamic studies.``
S.L.Zheng1，Y.Zhang1
(1.Institute of Chemical Metallurgy, the Chinese Academy of Sciences, Beijing 100080, China)
Abstract:A new method for chromate cleaning production named chromite caustic fusion pro-cess, is advanced by Institute of Chemical Metallurgy, the Chinese Academy of Sci-ences. With sodium hydroxide as reaction medium, the new process is composed ofthree procedures: liquid phase oxidation of chromite - metastable phase separation -carbonation ammonium transition. Generally illustrating the new process and its fea-tures, this paper mainly studies the thermodynamics of chromite oxidation. The newprocess has much better practical results than the conventional chromate productionprocess in which sodium carbonate is used as reaction medium. The superiority is alsoshown through thermodynamic studies.``
Key words:chromite; oxidation; flowsheet; recycling; thermodynamic;
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