(中南工業(yè)大學(xué)有色冶金系，長沙 410083)
摘 要: 廣泛地搜集了Ni-Cu-Fe-S-O體系熱力學(xué)數(shù)據(jù)，嚴(yán)格地進(jìn)行了篩選，并充分考慮各物質(zhì)的分解溫度，借助已開發(fā)的優(yōu)勢區(qū)圖自動繪制系統(tǒng)，完整地繪制了Ni-S-O，Cu-S-O，F(xiàn)e-S-O，Ni-Cu-S-O和Ni-Fe-S-O幾個體系不同溫度下的lg pSO2—lg pO2優(yōu)勢區(qū)圖。從一系列優(yōu)勢區(qū)圖發(fā)現(xiàn)，在高溫下(1500K以上)，鎳冶煉過程的穩(wěn)定成分主要是金屬、低價金屬硫化物、低價金屬氧化物，其它物種均會發(fā)生分解。從理論上重新闡述了鎳高溫火法熔煉的熱力學(xué)原理。
關(guān)鍵字: Ni-Cu-Fe-S-O系；熱力學(xué)數(shù)據(jù)；優(yōu)勢區(qū)圖；熱力學(xué)分析
（Department of Nonferrous Metallurgy, Central South University of Technology, Changsha 410083, P.R.China）
Abstract:The thermodynamical data of Ni-Cu-Fe-S-O systems were collected and strictly evaluated and the decomposition temperature of species was considered as well. With the help of predominance diagram plotting system, the predominance diagrams of Ni-S-O, Cu-S-O, Fe-S-O, Ni-Cu-S-O and Ni-Fe-S-O systems were completely plotted. It shows from all the diagrams that the predominance species during nickel smelting are metals, low valence metal sulfides and metal oxides at high temperature (above 1500K) and other species will be decomposed. The principles of the nickel smelting process at high temperature were accordingly demonstrated.
Key words: Ni-Cu-Fe-S-O system; thermodynamical data; thermodynamical analysis; predominance diagram
