(1. 中南大學 冶金與環(huán)境學院，長沙 410083；
2. 長沙有色冶金設計研究院有限公司，長沙 410001；
3. 江西理工大學 材料冶金化學學部，贛州 341000)
摘 要: 利用已開發(fā)的鉛富氧側(cè)吹氧化熔池熔煉多相平衡熱力學數(shù)學模型，計算某典型鉛側(cè)吹氧化熔煉生產(chǎn)工況，驗證模型熱力學分析的可行性，進而考察氧料比(ROC)、石英熔劑率(RSiO2)、石灰熔劑率(RCaO)、返塵加入率(RB,dust)、熔煉渣溫度(TSlag)等工藝參數(shù)對產(chǎn)物產(chǎn)率及其組成的影響。結(jié)果表明：提高ROC、RSiO2、RCaO、RB,dust或TSlag，在提升一次粗鉛品位和產(chǎn)品質(zhì)量的同時，必然會導致渣含鉛升高、一次粗鉛收率降低，部分雜質(zhì)元素入渣脫除率降低；當這些工藝參數(shù)控制過高時，一次粗鉛品位反而會降低；綜合考慮產(chǎn)物產(chǎn)率、一次粗鉛品位、富鉛渣流動性、煙灰利用率和物料揮發(fā)性，ROC、RSiO2、RCaO、RB,dust和TSlag建議分別控制在112 Nm3/t、4%、3%、21%和1323 K左右。
關(guān)鍵字: 富氧側(cè)吹，鉛熔池熔煉；多相平衡；化學平衡常數(shù)法
（1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. Changsha Design and Research Institute of Nonferrous Metallurgy, Changsha 410001, China;
3. Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China）
Abstract:With the developed multi-phase equilibrium thermodynamic mathematical model of lead oxygen-enriched side-blown oxidation bath smelting, the production conditions of a typical lead side-blown oxidation smelting were calculated, and the feasibility of thermodynamic analysis of the model was verified. Then the effects of the oxygen-to-feed ratio (ROC), quartz flux rate (RSiO2), lime flux rate (RCaO), back-dust addition rate (RB,dust) and slag temperature (TSlag) were investigated on the yield and compositions of the products. The results show that the improvement of ROC, RSiO2, RCaO, RB,dust or TSlag will inevitably lead to the increase of lead content in slag, the decrease of yield of primary lead and the decrease of removal rate of some impurity elements in slag, while the grade of primary crude lead will decrease when these process parameters are controlled too high. Considering the product yield, primary lead grade, fluidity of lead-rich slag, utilization ratio of back-dust and volatility of materials, ROC, RSiO2, RCaO, RB,dust and TSlag should be controlled at about 112 Nm3/t, 4%, 3%, 21% and 1323 K, respectively.
Key words: oxygen-enriched side-blown; lead bath smelting; multi-phase equilibrium; chemical equilibrium constant method
