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Magnetic separation studies on ferruginous chromite fine to enhance Cr:Fe ratio

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International Journal of Minerals,Metallurgy and Materials 2015年第3期22卷 217-224页

作者： Sunil kumar Tripathy p.k.banerjee Nikkam Suresh Research and Development Division Tata Steel Ltd. Fuel and Mineral Engineering Dept. Indian School of Mines

The Cr：Fe ratio （chromium-to-iron mass ratio） of chromite affects the production of chrome-based ferroalloys. Although the lit- erature contains numerous reports related to the magnetic separation of different minerals, limited work concerning the application of mag- netic separation to fine chromite from the Sukinda region of India to enhance its Cr：Fe ratio has been reported. In the present investigation, magnetic separation and mineralogical characterization studies of chromite fines were conducted to enhance the Cr：Fe ratio. Characterization studies included particle size and chemical analyses, X-ray diffraction analysis, automated mineral analysis, sink-and-float studies, and mag- netic susceptibility measurements, whereas magnetic separation was investigated using a rare earth drum magnetic separator, a rare earth roll magnetic separator, an induced roll magnetic separator, and a wet high-intensity magnetic separator. The fine chromite was observed to be upgraded to a Cr：Fe ratio of 2.2 with a yield of 55.7% through the use of an induced roll magnetic separator and a feed material with a Cr：Fe ratio of 1.6.

关键词： chromite ore treatment magnetic separation characterizafion mineral processing industry

Effect of Indian Medium Coking Coal on Coke Quality in Non-recovery Stamp Charged Coke Oven

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Journal of Iron and Steel Research International 2014年第7期21卷 673-678页

作者： H.p.Tiwari p.k.banerjee V.k.Saxena S.k.Haldar Raw Material and Coke Making Research Group Research and Development DivisionTata Steel Ltd.Jamshedpur 831001JharkhandIndia Department of Chemical Engineering Indian School of Mines Coke plants Tata Steel Ltd.Jamshedpur 831001JharkhandIndia

The maximum possibility of utilizing the Indian coking coals and inferior grade coking coal for producing metallurgical coke through non-recovery stamp charging tech_nology was investigated. Indian indigenous coals contained low percent of vitrinite （〈50%） and higher content of ash （〉15%） compared to imported coking coal. Therefore, the selection of appropriate proportion of different types of coals was a major challenge for coke makers. Coal blend selection criterion based on a single coefficient, named as composite coking potential （CCp）, was developed. The use of increased proportion of semi-soft coal （crucible swelling number of 2.5） and high ash （≥15%） indigenous coal in the range of 20%- 35% and 20%-65% respectively in the blends resulted in good quality of coke. plant data of a non recovery coke oven were used for developing and validating the model. The results showed that the coke strength after reaction （CSR） varied in the range of 63.7%-67.7% and the M40 value was between 81.8 and 89.3 in both the cases.

关键词： Indian coking coal imported coking coal CCp CSR M40 non-recovery stamp charged coke making

Artificial neural network approach to assess selective flocculation on hematite and kaolinite

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International Journal of Minerals,Metallurgy and Materials 2014年第7期21卷 637-646页

作者： Lopamudra panda p.k.banerjee Surendra kumar Biswal R.Venugopal N.R.Mandre R&D Tata Steel Limited Institute of Minerals and Materials Technology(Council of Scientific and Industrial Research) Department of Fuel & Minerals Engineering Indian School of Mines University

Because of the current depletion of high grade reserves, beneficiation of low grade ore, tailings produced and tailings stored in tailing ponds is needed to fulfill the market demand. Selective flocculation is one alternative process that could be used for the beneficiation of ultra-fine material. This process has not been extensively used commercially because of its complex dependency on process parameters. In this paper, a selective flocculation process, using synthetic mixtures of hematite and kaolinite in different ratios, was attempted, and the ad-sorption mechanism was investigated by Fourier transform infrared （FTIR） spectroscopy. A three-layer artificial neural network （ANN） model （4？4？3） was used to predict the separation performance of the process in terms of grade, Fe recovery, and separation efficiency. The model values were in good agreement with experimental values.

关键词： hematite kaolinite flocculation artificial neural networks back propagation algorithm Fourier transform infrared spectroscopy separation efficiency

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椰壳纤维同质性能的研究

国外纺织技术（纺织针织服装化纤染整） 2003年第1期 4-8页

作者： p.k.banerjee 王希

1引言亚洲一些国家盛产大小和形状各异的椰子,由于缺少适当的出路,这些来自椰树果实的椰壳纤维中实际上只有一小部分用于工业生产中.印度和斯里兰卡是最大的椰壳纤维生产国,其产量分别占到世界椰壳纤维总产量的75%和22%.椰壳纤维主要用... 详细信息

1引言亚洲一些国家盛产大小和形状各异的椰子,由于缺少适当的出路,这些来自椰树果实的椰壳纤维中实际上只有一小部分用于工业生产中.印度和斯里兰卡是最大的椰壳纤维生产国,其产量分别占到世界椰壳纤维总产量的75%和22%.椰壳纤维主要用于生产小地毯、垫席、绳索以及滤布.100万个椰壳可提取80 t纤维,印度年产椰子130亿个,只有25%用于生产纤维,剩下的椰壳不是被废弃就是晒干后作燃料使用.由于其用途有限,这种有潜在利用价值的材料一直被盲目浪费.因此,对椰壳纤维进行产业用纺织品的应用开发是很有必要的.为此,对其物理、机械及化学性能有一个全面的认识是非常必要的.

关键词：椰壳纤维同质性能测试长度

用气流纺棉纱编织的平针线圈的几何结构和尺寸性能第一部分:问题的要点和实验探讨

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国外纺织技术 1989年第16期 14-18页

作者： p.k.banerjee 潘浩译

用天然纤维编织的针织物的一个严重问题是尺寸的不稳定性,在成圈过程中,纱线受到拉伸、弯曲、扭转和压缩的变形。当由线圈串套而成的毛坯布下机时,织物处于

关键词：纱线捻度纱线直径平针捻系数线密度气流纺织物厚度

用气流纺棉纱编织的平针线圈的几何结构和尺寸性能第一部分:问题的要点和实验探讨

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国外纺织技术（针织．服装分册） 1989年第4期 14-18页

作者： p.k.banerjee 潘浩译

用天然纤维编织的针织物的一个严重问题是尺寸的不稳定性,在成圈过程中,纱线受到拉伸、弯曲、扭转和压缩的变形。当由线圈串套而成的毛坯布下机时。

关键词：纬编棉针织物线圈结构尺寸性能

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单面针织物成圈系统的研究

国外纺织技术 1992年第17期 11-16页

作者： p.k.banerjee 宋广礼

1.必要性400多年以来,在针织工艺学、针织机结构和整理技术上取得了巨大的进展。假如人们局限于这样一种简化的假定,针织工艺就是一种能得到理想大小和长度的线圈的成圈方法,而不考虑花式结构单元,如集圈、浮线、复杂的毛

关键词：弯纱三角沉降片织针生克片纺织机械零部件针织用针纺织用针单面针织物成圈系统纱线张力给纱张力喂纱张力

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单面针织物成圈系统的研究

国外纺织技术（针织．服装分册） 1992年第5期 11-16页

作者： p.k.banerjee 宋广礼

1.必要性400多年以来,在针织工艺学、针织机结构和整理技术上取得了巨大的进展。假如人们局限于这样一种简化的假定,针织工艺就是一种能得到理想大小和长度的线圈的成圈方法,而不考虑花式结构单元,如集圈、浮线。

关键词：单面针织物成圈系统纬编工艺

Comparison and integration of CuInGaSe and perovskite solar cells

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Journal of Energy Chemistry 2023年第3期78卷 463-475,I0013页

作者： Weiguang Chi Sanjay k.banerjee Microelectronics Research Center Department of Electrical and Computer EngineeringThe University of Texas at AustinAustinTexas 78758USA

The rapidly developing perovskite solar cells(pSCs) provide a new and promising choice of thin film solar cells due to their attractive *** the commercialized thin film solar cells,CuInGaSe(CIGS)cells demonstrate higher efficiency than amorphous Si photovoltaic devices and lower toxicity than CdTe ***,a wide variety of studies have been conducted on ***,we elucidate CIGS materials and perovskites as absorber in thin film solar cells in terms of structure and optoelectronic ***,a comparison of pSCs and commercialized CIGS cells is made from the point of view of fabrication process,stability,and *** addition,the integration of CIGS devices and pSCs is elaborated based on tandem ***,prospects for the advancement of CIGS cells and pSCs are discussed.

关键词： CuInGaSe solar cells perovskite solar cells process Stability Toxicity Tandem