{"title":"Management and Performance of the Largest Gas Treatment Centre at Emal Potline During Major Shutdown of Main Exhaust Fans","authors":"Khawla Almarzooqi, Shaikha Alshehhi, Vijayakumar Chandran Pillai, Muna Abdulla, S. John, Padmaraj Gunjal, Bharat Gadilkar","doi":"10.1007/978-3-319-48251-4_73","DOIUrl":"https://doi.org/10.1007/978-3-319-48251-4_73","url":null,"abstract":"","PeriodicalId":18036,"journal":{"name":"Light Metals","volume":"2 2 1","pages":"447-452"},"PeriodicalIF":0.0,"publicationDate":"2016-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77503343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-02-07DOI: 10.1002/9781119274780.CH146
Camilla Sommerseth, Rebecca J. Thorne, A. P. Ratvik, E. Sandnes, Stein Rørvik, L. P. Lossius, H. Linga, A. Svensson
High quality anodes require stable raw materials. As the quality of the coke available for production of anodes is changing, future production will rely on cokes that are more isotropic with higher impurity levels than traditional raw materials. The purpose of this work was to improve the understanding of the electrochemical reactivity of different cokes. An-ode:electrolyte wetting is a key factor towards determining electrochemical reactivity, which in turn is affected by anode properties, type of coke and polarization. Pilot anodes were fabricated from single source cokes; one anisotropic coke low in impurities, and one isotropic coke with significantly higher impurity levels. Electrochemical characterisation included chronopotentiometry, cyclic voltammetry and impedance spectroscopy. Wetting properties were studied on both unpolarised and polarised samples by a dedicated wetting apparatus, and indirectly by computed tomography (CT) images of frozen electrolyte films.
{"title":"Electrochemical Reactivity and Wetting Properties of Anodes Made from Anisotropic and Isotropic Cokes","authors":"Camilla Sommerseth, Rebecca J. Thorne, A. P. Ratvik, E. Sandnes, Stein Rørvik, L. P. Lossius, H. Linga, A. Svensson","doi":"10.1002/9781119274780.CH146","DOIUrl":"https://doi.org/10.1002/9781119274780.CH146","url":null,"abstract":"High quality anodes require stable raw materials. As the quality of the coke available for production of anodes is changing, future production will rely on cokes that are more isotropic with higher impurity levels than traditional raw materials. The purpose of this work was to improve the understanding of the electrochemical reactivity of different cokes. An-ode:electrolyte wetting is a key factor towards determining electrochemical reactivity, which in turn is affected by anode properties, type of coke and polarization. Pilot anodes were fabricated from single source cokes; one anisotropic coke low in impurities, and one isotropic coke with significantly higher impurity levels. Electrochemical characterisation included chronopotentiometry, cyclic voltammetry and impedance spectroscopy. Wetting properties were studied on both unpolarised and polarised samples by a dedicated wetting apparatus, and indirectly by computed tomography (CT) images of frozen electrolyte films.","PeriodicalId":18036,"journal":{"name":"Light Metals","volume":"101 1","pages":"865-870"},"PeriodicalIF":0.0,"publicationDate":"2016-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80868816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-02-07DOI: 10.1007/978-3-319-48251-4_82
S. Pollé, Shaikha Shehhi, Sunny Mathew, Bharat Gadilkar, D. Ramchandran
{"title":"The Challenge to Supply Consistent Alumina Quality to All Pots on Increasingly Longer and Higher Capacity Potlines","authors":"S. Pollé, Shaikha Shehhi, Sunny Mathew, Bharat Gadilkar, D. Ramchandran","doi":"10.1007/978-3-319-48251-4_82","DOIUrl":"https://doi.org/10.1007/978-3-319-48251-4_82","url":null,"abstract":"","PeriodicalId":18036,"journal":{"name":"Light Metals","volume":"44 1","pages":"499-503"},"PeriodicalIF":0.0,"publicationDate":"2016-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90214416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-02-07DOI: 10.1007/978-3-319-48251-4_116
D. Roth
{"title":"History and Development of Slag and Dross Pressing","authors":"D. Roth","doi":"10.1007/978-3-319-48251-4_116","DOIUrl":"https://doi.org/10.1007/978-3-319-48251-4_116","url":null,"abstract":"","PeriodicalId":18036,"journal":{"name":"Light Metals","volume":"38 1","pages":"693-696"},"PeriodicalIF":0.0,"publicationDate":"2016-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86090883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-02-07DOI: 10.1007/978-3-319-48251-4_59
S. Poncsák, L. Kiss, V. Raymond, Csilla Kaszás, S. Guérard, J. Bilodeau
{"title":"Impact of the Heat Flux on Solidification of Cryolite Based Bath","authors":"S. Poncsák, L. Kiss, V. Raymond, Csilla Kaszás, S. Guérard, J. Bilodeau","doi":"10.1007/978-3-319-48251-4_59","DOIUrl":"https://doi.org/10.1007/978-3-319-48251-4_59","url":null,"abstract":"","PeriodicalId":18036,"journal":{"name":"Light Metals","volume":"41 1","pages":"359-364"},"PeriodicalIF":0.0,"publicationDate":"2016-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78539521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-02-07DOI: 10.1007/978-3-319-48251-4_93
S. Sijabat, E. Ivan, M. Sunardi
{"title":"Enhancing Production Performance by Optimization All Resources at PT Inalum (Persero)","authors":"S. Sijabat, E. Ivan, M. Sunardi","doi":"10.1007/978-3-319-48251-4_93","DOIUrl":"https://doi.org/10.1007/978-3-319-48251-4_93","url":null,"abstract":"","PeriodicalId":18036,"journal":{"name":"Light Metals","volume":"37 1","pages":"559-562"},"PeriodicalIF":0.0,"publicationDate":"2016-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72971176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-02-07DOI: 10.1007/978-3-319-48251-4_92
Henrik Åsheim, T. Aarhaug, E. Sandnes, O. Kjos, A. Solheim, S. Kolås, G. Haarberg
{"title":"Anode Effect Initiation During Aluminium Electrolysis in A Two Compartment Laboratory Cell","authors":"Henrik Åsheim, T. Aarhaug, E. Sandnes, O. Kjos, A. Solheim, S. Kolås, G. Haarberg","doi":"10.1007/978-3-319-48251-4_92","DOIUrl":"https://doi.org/10.1007/978-3-319-48251-4_92","url":null,"abstract":"","PeriodicalId":18036,"journal":{"name":"Light Metals","volume":"84 1","pages":"551-556"},"PeriodicalIF":0.0,"publicationDate":"2016-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81078906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-02-07DOI: 10.1007/978-3-319-48251-4_15
Wang Yanxiu, Zhang Ting’an, Lv Guozhi, Z. Weiguang
{"title":"Reaction behavior and conversion of anatase in alumina production process with calcification-carbonization method","authors":"Wang Yanxiu, Zhang Ting’an, Lv Guozhi, Z. Weiguang","doi":"10.1007/978-3-319-48251-4_15","DOIUrl":"https://doi.org/10.1007/978-3-319-48251-4_15","url":null,"abstract":"","PeriodicalId":18036,"journal":{"name":"Light Metals","volume":"42 1 1","pages":"85-90"},"PeriodicalIF":0.0,"publicationDate":"2016-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89520116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-02-07DOI: 10.1002/9781119274780.CH122
Y. Wang, Li Zhou, Z. Fan
It was found that the efficiency of TiB2 inoculation to achieve grain refinement was decreased dramatically by Zr addition. In the present work, the mechanism of so-called “poisoning” effect was investigated by advanced analytical microscopy, including Cs-corrected high resolution STEM. For the first time, adsorption of Zr atoms was observed in a mono-layer on {0001} surface of TiB2. Significantly, atomic resolution STEM Z-contrast imaging revealed that the brightness of atomic columns in the monolayer varied periodically when viewing in ([10bar 10]) direction, indicating that the adsorbed Zr atoms in the layer were ordered in 2D. Deviation by 8 degrees from the well define orientation relationship, (0001)TiB2 8deg ~ (111)Al, and ({[11bar 20]_{TiB2}}parallel {[0bar 11]_{A1}}), was observed. The effect of Zr atom adsorption at the interface on mechanism of heterogeneous nucleation was discussed.
结果表明，Zr的加入显著降低了TiB2接种对晶粒细化的效果。在本工作中，利用先进的分析显微镜，包括cs校正的高分辨率STEM，研究了所谓的“中毒”效应的机制。首次在TiB2的{0001}表面观察到Zr原子的单层吸附。值得注意的是，原子分辨率STEM z -对比度成像显示，在([10bar 10])方向观察时，单层原子柱的亮度周期性变化，表明层中吸附的Zr原子在二维中有序。观察到与井定义的定向关系(0001)TiB2 (111)Al和({[11bar 20]_{TiB2}}parallel {[0bar 11]_{A1}})偏差8度。讨论了界面吸附Zr原子对非均相成核机理的影响。
{"title":"Mechanism of Zirconium Poisoning Effect on TiB2 Inoculation in Aluminium Alloys","authors":"Y. Wang, Li Zhou, Z. Fan","doi":"10.1002/9781119274780.CH122","DOIUrl":"https://doi.org/10.1002/9781119274780.CH122","url":null,"abstract":"It was found that the efficiency of TiB2 inoculation to achieve grain refinement was decreased dramatically by Zr addition. In the present work, the mechanism of so-called “poisoning” effect was investigated by advanced analytical microscopy, including Cs-corrected high resolution STEM. For the first time, adsorption of Zr atoms was observed in a mono-layer on {0001} surface of TiB2. Significantly, atomic resolution STEM Z-contrast imaging revealed that the brightness of atomic columns in the monolayer varied periodically when viewing in ([10bar 10]) direction, indicating that the adsorbed Zr atoms in the layer were ordered in 2D. Deviation by 8 degrees from the well define orientation relationship, (0001)TiB2 8deg ~ (111)Al, and ({[11bar 20]_{TiB2}}parallel {[0bar 11]_{A1}}), was observed. The effect of Zr atom adsorption at the interface on mechanism of heterogeneous nucleation was discussed.","PeriodicalId":18036,"journal":{"name":"Light Metals","volume":"1 1","pages":"725-729"},"PeriodicalIF":0.0,"publicationDate":"2016-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91263720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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