石忠宁
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- 姓名:石忠宁
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冶金工程技术
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石忠宁,1975年生,籍贯广西都安县,冶金工程工学博士,副教授,2004年3月于东北大学获得有色金属冶金专业博士学位。博士论文题目为“铝电解惰性金属阳极和金属-氧化铝阳极的研制与测试”。目前主要从事铝电解理论与应用研究、熔盐电化学冶金理论研究。曾负责完成辽宁省博士启动基金项目1项,参与完成863项目1项,973项目1项,国家自然科学基金项目3项。现担任973项目第五子课题“非并网风电系统的特殊负载耦合机理研究”的下一级子课题负责人,国家发改委技术开发专项“电解铝固体废弃物无害化处理与综合利用技术”课题参与单位负责人。负责完成多项有关铝电解节能降耗的项目。2006年获得江西省科学技术进步奖一等奖,2006年获得辽宁省科学技术奖自然科学三等奖,2007年获得洛阳市科技进步三等奖,2007年被评为“辽宁省百千万人才工程”千人层次。2005年至今为美国The Minerals, Metals & Materials Society(TMS)学会会员。在国内外期刊、会议发表论文共70余篇,其中被SCI、EI和ISTP收录50余篇次,授权发明专利4项。
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【期刊论文】Copper-Nickel Superalloys as Inert Alloy Anodes for Aluminum Electrolysis
石忠宁, Zhongning Shi, Junli Xu, Zhuxian Qiu, Bingliang Gao, Zhaowen Wang
JOM • November 2003,-0001,():
-1年11月30日
The superalloys Cu-Ni-Al, Cu-Ni-Fe, and Cu-Ni-Cr were studied as anodes for aluminum electrolysis. The alloys were tested for corrosion in acidic electrolyte molten salt and for oxidation in both air and oxygen. The results showed that the Cu-Ni-Al anodes possess excellent resistance to oxidation and corrosion, and the oxidation rates of Cu-Ni-Fe and Cu-Ni-Al anodes were slower than those of pure copper or nickel. During electrolysis, the cell voltage of the Cu-Ni-Al anode was affected most by the concentration of alumina in cryolite molten salt. The Cu-Ni-Fe anode exhibited corrosion resistance in electrolyte molten salt. Comparatively, the Cu-Ni-Cr anode showed poor resistance to oxidation and corrosion. The testing found that further study is warranted on the use of Cu-Ni-Al and Cu-Ni-Fe as inert alloy anodes.
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【期刊论文】FABRICATION AND TEST OF METAL MATRIX COMPOSITES AS ADVANCED ANODES FOR ALUMINUM ELECTROLYSIS
石忠宁, Z. N. SHI, J. L. XU, Z. X. QIU
Canadian Metallurgical Quarterly, Vol.43, No.2 pp.259-264, 2004 ,-0001,():
-1年11月30日
A new type of metal matrix composite with a composition of Al2O3-33.8Fe-26.2Ni (wt.%) used as an inert anode was developed in this article. Aluminum electrolysis with this anode was con- ducted for 12 hours at 850°C with a 1.8:1 molar ratio of cryolite which consisted of NaF-AlF3- 8wt%NaCl-5wt%CaF2-4wt%Al2O3. The anodic current density was 0.75A/cm2. Electrolysis was carried out smoothly with relatively stable cell voltage. Electron probe microanalyzer results showed that a film on the anodic substrate was characterized by two layers. The outer oxide layer consisted of Na3AlF6 and FeAl2O4, while the inner layer consisted of complicated cermets including Al2O3, NiO and FeAl2O4 ceramic and a Ni3Fe and a Ni3Al metallic phase. These phases in the inner layer were dispersed from each other. The anodes showed good performance in terms of electronic conductivity, anti-oxidation and anti-corrosion, thermal shock resistance, as well as being mechanically robust. The wear rate of the anode is 19 mm per year and the purity of aluminum produced is 98-99%./ Dans cet article, on discute du développement d’un nouveau type de composite à matrice métallique ayant une composition d’Al2O3–33.8Fe–26.2Ni (% en poids) utilisé comme anode inerte. On a effectué l’électrolyse de l’aluminium avec cette anode pendant 12 heures à 850°C, avec un rapport molaire de 1.8:1 de cryolithe qui consistait en NaF–AlF3–8% en poids de NaCl–5% en poids de CaF2–4% en poids d’Al2O3. La densité de courant anodique était de 0.75 A/cm2. L’électrolyse a été exécutée uniment avec un voltage cellulaire relativement stable. Les résultats d’une microsonde de Castaing ont montré qu’un film sur le substrat anodique était caractérisé par deux couches. La couche extérieure d’oxyde consistait en Na3AlF6 et en FeAl2O4 alors que la couche intérieure consistait en cermets compliqués incluant la céramique d’Al2O3, de NiO et de FeAl2O4 ainsi qu’une phase métallique de Ni3Fe et de Ni3Al. Ces phases de la couche intérieure étaient dispersées l’une de l’autre. Les anodes ont montré un bon rendement en termes de conductivité électronique, d’anti-oxydation et d’anti-corrosion ainsi que de leur résistance aux chocs thermiques, tout en étant robustes mécaniquement. Le taux d’usure de l’anode est de 19 mm par année et la pureté de l’aluminium produit est de 98-99%.
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【期刊论文】Metal-alumina cermet inert anode in a 100 A bench-scale cell for aluminium electrolysis
石忠宁, Qiu Zhuxian, Shi Zhongning, Xu Junli, Shenyang
ALUMINIUM 80, Jahrgang 2004, 3,-0001,():
-1年11月30日
alumina cermet inert anode in cryolite-alumina electrolyte at 960℃ was carried out in a graphite crucible. The dimensions of the graphite crucible were Ø 160 mm × 250 mm, The cell was built with a graphite cathode of 150 mm× 40 mm× 15 mm and an inert anode of 120mm× 80mm × 15mm. The purity of aluminium metal produced was 98%-99%, the impurity were mainly Fe, Ni, Co. The anode gas consisted of 98%- 99% O2 which was analyzed with an Orsat apparatus. The back EMF value of the cell at 960℃ was 2.45 V, which was 0.25 higher than the theoretical alumina decomposition potential 2.2V. After 10 hours, electrolysis, the anode was only little corroded. Hence it was confirmed that the electrochemical reaction occurred in the electrolysis cell was the decomposition of Al2O3 in the bath and the anode used was inert.
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【期刊论文】AN IRON-NICKEL METAL ANODE FOR ALUMINUM ELECTROLYSIS
石忠宁, SHI Zhong-ning, XU Jun-li, QIU Zhu-xian
Light Metals 2004 Edited by Alton T. Tabereaux TMS (The Minerals, Metals & Materials Society), 2004,-0001,():
-1年11月30日
A Fe-43Ni (wt%) alloy made by powder metallurgy and used as anode for aluminum electrolysis, is described in the present paper. Electrolysis with this anode was conducted for ten hours at 850℃ in a molten salt consisting of NaF-43.7AlF3-8NaCl-5CaF2-4Al2O3 (wt.%). The anodic current density was 0.75 A/cm2. Electrolysis was carried out smoothly with a fluctuation of the cell voltage within the range of 3.8~4.1 V. Electron Probe Micro-analyzer and X-Ray Diffraction results showed that the film generated on the anodic substrate consisted of iron oxide as the major phase, and with nickel oxide and nickel ferrite as minor phases. The metal anode showed good performance in terms of anti-oxidation and corrosion resistance. The average annual anode wear rate was calculated to be 21 millimeter, and the purity of the aluminum produced was 97~98%.
Iron-Nickel alloy, Slowly-Consumable Metal Anode, Aluminum Electrolysis
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【期刊论文】Investigation of the failure of a 300 kA prebaked anode reduction cell
石忠宁, Shi Zhong-ning, Ren Bi-jun, Wang De-xi, Liu Shi-ying, Cao Quan-hong, Qiu Zhu-xian
Light Metals 2006 Edited by Travis J. Galloway TMS (The Minerals, Metals & Materials Society), 2006,-0001,():
-1年11月30日
Because of the degradation of side linings and cathode blocks, some aluminum reduction cells (300 kA prebaked anode type) were shut down for relining in Yichuan aluminum smelter plant. Combining with actual observations, the samples of side linings and cathode blocks were analyzed from different locations of the cells, and the reasons for degradation of the Si3N4-SiC side linings and cathode blocks were investigated. Also, the factors influencing degradation of cathode blocks and side linings were summarized as superheat temperature, anode effect coefficient, space from anode side to the sidewall and current density. Some suggestions are offered to solve these problems for the large scale prebaked anode reduction cells in China.
cathode degradation, relining,, sidewall, cathode blocks, aluminum electrolysis
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【期刊论文】300 A BENCH-SCALE ALUMINUM ELECTROLYSIS CELL WITH Fe-Ni-Al2O3 COMPOSITE ANODE
石忠宁, SHI Zhong-ning, XU Jun-li, QIU Zhu-xian, WANG Zhao-wen, Gao Bing-liang
Light Metals 2005 Edited by Halvor Kvande TMS (The Minerals, Metals & Materials Society), 2005 ,-0001,():
-1年11月30日
A new Fe-Ni-Al2O3 metal matrix composite material was developed for aluminum electrolysis cells. A 300 A experiment for these anodes was operating with wettable cathodes (TiB2) at 960℃ for 10 h. The electrolyte consisted of 51NaF-39AlF3- 3CaF2-7Al2O3(wt%). The potential from the anode to the aluminum reference electrode was 2.25V. The purity of the produced aluminum was <99% with 75% current efficiency. After electrolysis, the SEM analysis indicated that there was a layer consisting of Al2O3 at the anode surface. To some extent, the layer can prevent the attacks from the melt and oxygen.
Fe-Ni-Al2O3 metal matrix composites, inert anodes, titanium diboride, aluminum electrolysis, bench-scale test
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【期刊论文】TESTS OF VARIOUS GRAPHITIC CATHODE BLOCKS MATERIALS FOR 300 KA ALUMINUM REDUCTION CELLS
石忠宁, Zhongning Shi, Junli Xu, Bijun Ren, , Yungang Ban, Zhaowen Wang
Light Metals 2007,-0001,():
-1年11月30日
To find an excellent candidate cathode materials for decreasing the cathode voltage drops, forming good side-ledge and more longer cell lift time, various graphite content, such as 30%, 40%, 75% and 100% graphitic cathode blocks from deferent companies were tested for the 300 kA aluminum reduction cells bottom relining. The properties, such as cathode voltage drops, electric resistance were detected after the cell startup. The obtained data showed that the electrical resistance of the cathodes will increase with the decreasing of graphite content in the blocks except for the full graphitized cathode. Some semi-graphitic cathodes could attain a value of voltage drops under 300 mV, which suggested that this kind of cathode blocks might be the best one for saving energy and prolong the cell lift time.
aluminum reduction cell, cathode blocks, Graphitized cathode, voltage-drop
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【期刊论文】Anti-oxidation properties of Iron-Nickel Alloys at 800-900℃
石忠宁, Zhonging Shi, Xingliang Zhao, Junli Xu, Xiaozhou Cao, Zhaowen Wang, Ringliang Gao
,-0001,():
-1年11月30日
In order to find a suitable Fe-Ni base alloy as a kind of candidate metal inert anode materials tor aluminum electrolysis, three kind of Fe-Ni (with different wt%) alloys with mass ratio of 50:50, 60:40 and 70:30 respectively were prepared by powder metallurgy process. Oxidation behaviors of the alloys were studied at 900℃. The results indicated that the oxidation kinetic curves follow the parabolic law and anti-oxidation properties enhanced with increasing ratio of Fe to Ni in the alloy. X-Ray Diffraction showed that the oxide film formed on the anodic surface consisted of Fe2O3 and Fe3O4. 5wt% Al and 30wt% Co were added in different Fe-Ni alloy respectively. The results showed that anti-oxidation properties or Fe-Ni-Co is better than Fe-Ni-Al at 900℃.
Fe-Ni alloys, oxidation, metal-based inert anode, aluminum electrolysis
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石忠宁, 徐君莉, 邱竹贤, 舒芳霞
中国有色金属学报2004 年4月第14 卷第4期/The Chinese Journal of Nonferrous Metals Vol.14, No.4 Apr.2004,-0001,():
-1年11月30日
对Ni-Fe-Cu合金的抗氧化和耐熔盐腐蚀性能进行了研究。结果显示,该合金的氧化动力学曲线符合抛物线规则。静态电解质中的溶解腐蚀速率随温度的增高和NaF与AlF3的摩尔分子比的降低而增大。在不同电解条件下,组成为NaF-AlF3-NaCl-CaF2-Al2O3的电解质体系中电解时,该阳极周围产生大量气泡,槽电压在3.6~4.2之间波动,阳极的电解极化腐蚀速率随电解质中氧化铝浓度的增高、温度的降低而减小,产品铝的纯度达到97%~98%。
惰性金属阳极, Ni-Fe-Cu合金, 低温铝电解, 氧化, 熔盐冰晶石腐蚀中
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石忠宁, 徐君莉, 邱竹贤, 王兆文, 高炳亮
稀有金属材料与工程2005年9月第34卷增刊2/RARE METAL MATERIALS AND ENGINEERING Vol.34, Suppl.2, September 2005,-0001,():
-1年11月30日
采用粉末冶金的方法制各了一种Fe-Ni-Co-Al2O3金属基复合材料作新型铝电解惰性阳极。该阳极在温度为900℃的冰晶石一氧化铝基熔盐体系中进行33 h的电解试验测试。结果表明,该阳极具备较好的导电导热性和抗氧化、耐腐蚀性能。电解过程能够在阳极表面形成复合氧化物层,对阳极基体起到保护作用,保证阳极的惰性功能。采用铝参比电极在三电极体系中测得阳极反应的反电动势为2.3V,与氧化铝的理论分解电压一致,证明阳极的在工作时呈现“惰性”功能。电解铝产品纯度为98~99%。采用X-射线衍射和电子探针分析仪对电解后的阳极进行研究分析,发现阳极表面的金属相和陶瓷相彼此之间相互弥散分布,结构致密。
铝电解, 金属基复合材料, 阳极反应机理, 氧化膜, 腐蚀
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