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| 1 | Thermodynamic Study on Process in Copper Converters(The slag-making stage)显示文摘The so-called Goto’s model was modified by introducing a parameter of the oxygen efficiency from industrial trials, as well as the selected and newly re-assessed thermodynamic data. The application of the model to copper converters in Guixi Smelter has been carried out by the combination of thermodynamic calculations with the mass and heat balance using the plant data obtained in industrial trials for many heats. For the slag-making stage, good agreements have been reached betWeen the calculated and measured temperature, blowing time as well as the contents for main elements in the matte and the slag. Relativel}’’ large deviations for contents of Zn and Pb in the slag may be caused by the complex chemical composition of the real molten slag, which ma}; result in a large difference of γzn. and γPb,adopted with their real values. It is noted that the model can simulate the slag-making stage of copper converting process in industrial Pierce-Smith converters well. | Chunlin Chen Tuping Zhou Jiayun Zhang Shoukun Wei Xingxiang Lu Meng Bai Jinhong Jiang(Metallurgy School, University of Science and Technology Beijing, Beijing 100083, China)(Guixi Smelter, Jiangxi Province 333424, China) | 1999 | International Journal of Minerals,Metallurgy and Materials1999，13，3： | 2 |
| 2 | Thermodynamic Study on Process in Copper Converters (The Copper-making Stage)显示文摘Theoretical calculations were based on thermodynamic equilibrium in the multi-component and multi-phase system with heat and mass balance as well as the oxygen efficiency to take account for the effects of process kinetics. The variations of temperature, mass fractions of dissolved oxygen and sulfur in blister copper, partial pressures for O2, S2, SO2 in gas phase for the copper-making stage were calculated. The model predicted temperature, time of blowing as well as mass of the blister copper at end points for 6 heats showed a fairly good agreements with corresponding plant data. The calculated content of 0.065% and content of 0.87% in blister copper were both at reasonable levels. Compared with the so called Goto model, the present model has very much improved process description of copper-making stage as well as the prediction of end points for a copper converter by introducing the oxygen efficiency. | Chunlin Chen, Jiayun Zhang, Tuping Zhou, Shoukun Wei, Xingxiang Lu2), Meng Bai, Jinhong Jiang ( Metallurgy School, University of Science and Technology Beijing, Beijing 100083, China Guixi Smelter, Jiangxi, 335424) | 2000 | International Journal of Minerals,Metallurgy and Materials2000，14，3： | 1 |
| 3 | Investigation on the Copper Content of Matte Smelting Slag in Peirce-Smith Converter显示文摘The copper contents and its existing forms in the slags during the slag-making stage of Peirce-Smith converters in Guixi Smelter, Jiangxi Province, China have been investigated. The investigation was based on plant trials with the corresponding thermody-namic calculations and kinetic considerations. From the plant data, the total copper content in the slags was in the range of 2% to 8 % (mass fraction). The mechanical entrainment of matte drops has been found to be the main cause of the copper loss. The suspension index, defined as the ratio of the mass fraction of copper in suspended matte drops in the slag to that in bulk of the matte phase, has been adopted to quantify the matte entrainment. The values of this parameter estimated in this work have been found mainly within a range of 2.5%-8.0%. The Fe3O4 content in the slag has been estimated to be the most important factor, among others, influencing the separation of slag with matte and, consequently, the copper loss from the slag. | Chunlin Chen, Jiayun Zhang, Meng Bai, Shoukun Wei Metallurgy School, University of Science & Technology Beijing, Beijing 100083, China Guixi Smelter, Jiangxi Copper Co. Ltd., Jiangxi 335424, China | 2001 | Journal of University of Science and Technology Beijing2001，8，3： | 1 |
| 4 | Organic Matter Accumulation in the Upper Permian Dalong Formation from the Lower Yangtze Region,South China显示文摘The Late Permian was marked by a series of important geological events and widespread organic-rich black shale depositions,acting as important unconventional hydrocarbon source rocks.However,the mechanism of organic matter(OM)enrichment throughout this period is still controversial.Based on geochemical data,the marine redox conditions,paleogeographic and hydrographic environment,primary productivity,volcanism,and terrigenous input during the Late Permian in the Lower Yangtze region have been studied from the Putaoling section,Chaohu,to provide new insights into OM accumulation.Five Phases are distinguished based on the TOC and environmental variations.In Phase I,anoxic conditions driven by water restriction enhanced OM preservation.In Phase II,euxinic and cycling hydrological environments were the two most substantial controlling factors for the massive OM deposition.During Phase III,intensified terrestrial input potentially diluted the OM in sediment and the presence of oxygen in bottom water weakened the preservation condition.Phase IV was characterized by a relatively higher abundance of mercury(Hg)and TOC(peak at 16.98 wt%),indicating that enhanced volcanism potentially stimulated higher productivity and a euxinic environment.In Phase V,extremely lean OM was preserved as a result of terrestrial dilutions and decreasing primary productivity.Phases I,II and IV are characterized as the most prominent OM-rich zones due to the effective interactions of the controlling factors,namely paleogeographic,hydrographic environment,volcanism,and redox conditions. | FANG Chaogang ZHANG Chengcheng MENG Guixi XU Jinlong XU Naicen LI Hualing LIU Mu LIU Bo | 2024 | Acta Geologica Sinica(English Edition)2024，98，1： | 0 |
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