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Trans. Nonferrous Met. Soc. China 31(2021) 1165-1174 Thermodynamic simulation of complex Pb-Bi concentrate oxidative bath smelting process Lin CHEN1,2, Peng CHEN1,2, Du-chao ZHANG1,2, Wei-feng LIU1,2... pSO2 was conducive for reducing the dust ratio. Key words: complex Pb-Bi concentrate; oxygen-rich bath smelting; multiphase equilibrium simulation; element partitioning; process parameter optimization 1......
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文章编号:1004-0609(2012)05-1304-07 Pb-Bi包晶合金定向凝固相和组织选择 胡小武1,闫 洪1,陈文静2,李双明3,傅恒志3 (1. 南昌大学 机电工程学院,南昌 330031;2. 西北工业大学 理学院,西安 710072; 3. 西北工业大学 凝固技术国家重点实验室,西安 710072) 摘 要:针对Pb-Bi包晶合金中高速及低速定向凝固,利用最高界面生长温度判据以及充分形核和成分过冷准则,对Pb-Bi包晶合金定向凝固中初生α和包晶β两相的相互竞争规律进行预测.计算结果表明:在中高速凝固段,与Pb-26%Bi,Pb-28%Bi,Pb-30%Bi和Pb-34%Bi(质量分数)合金对应的α→β转变的临界生长速度分别为20,14,8.5和2 mm/s;在低速凝固段,合金的相选择图分为8个生长区,其中包括两相分别以单相生长区及两相混合生长区......
ODS-CLAM钢抗静态Pb-Bi腐蚀性能的初步研究刘玉贞1,孙钦星21. 莒南县职业教育中心2. 青岛农业大学化学与药学院摘 要:含碳量不同(0.1%,0.2%质量分数)氧化物弥散强化铁素体/马氏体钢(ODS-CLAM)在100 h,500℃饱和氧含量条件下进行静态Pb-Bi腐蚀实验.采用SEM,EDS,电子万能试验机表征样品腐蚀实验前后的变化.结果表明:腐蚀实验过后,两种样品表面均形成厚度10μm的氧化层,其主要成分为Fe-Cr-O,含碳量0.2%样品内部出现Fe-C-O的颗粒.腐蚀试验后两种样品的力学性能均降低,主要表现为均匀延伸率的下降,而抗拉强度降低较少,对低碳含量的样品而言其屈服强度降低更明显,拉伸断口形貌在腐蚀试验前后没有出现明显的变化.关键词:Pb-Bi腐蚀;ODS......
Trans. Nonferrous Met. Soc. China 22(2012) 2131-2138 Banding structure formation during directional solidification of Pb-Bi peritectic alloys HU Xiao-wu1, LI Shuang-ming2, AI Fan-rong1, YAN Hong1 1..., China Received 7 September 2011; accepted 1 April 2012 Abstract: Directional solidification experiments on Pb-Bi peritectic alloys were carried out at very low growth rate (v=0.5 μm/s) and high......
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Leaching of complex sulphide concentrate in acidic cupric chloride solutions M. TCHOUMOU1, M. ROYNETTE2 1. Faculty of Science, Marien Ngouabi University, Brazzaville, Congo; 2. Laboratory...; Abstract: The chemical analysis of a complex sulphide concentrate by emission spectrometry......
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id="ChDivSummary" name="ChDivSummary">The treatment of the Gacun complex Cu-Pb bulk concentrate with high Zn,Ag,etc.,by oxygen pressure acid leaching was studied.The pri-mary copper and leadminerals...An investigation of oxygen pressure acid leaching of Gacun complex Cu-Pb bulk concentrateXU Bina,b,ZHONG Hongc,and JIANG Taoa a School of Resources Processing and Bioengineering,Central South......
), marmatite (ZnFeS), quartz (SiO2), and other minerals including Pb and Ti. Fig.1 shows the XRD pattern of the zinc sulfide concentrate. Table 1 Chemical composition of ZnS concentrate (mass fraction... Pressure acid leaching of zinc sulfide concentrate GU Yan(古 岩), ZHANG Ting-an(张廷安), LIU Yan(刘 燕), MU Wang-zhong(牟望重), ZHANG Wei-guang(张伟光),DOU Zhi-he(豆志河), JIANG Xiao-li(蒋孝丽) Key......