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washability analysis of high sulfur coal gangue from a coal mine in Guizhou

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Journal of Coal Science & Engineering(China) 2007年第1期13卷 90-94页

作者：唐云代文治张覃聂光华成奖国庹必阳卯松牛芳银 Mining College Guizhou University Guiyang 550003 China

Fulfill the screen test and float-and-sink analysis for high sulfur coal gangue from a Guizhou coal mine, analyzed the washability of its tail coal. Seen from the results： most of sulfur in sample is pyrite, the sulfur content of different particle classification shall be reduced with the decreasing of size and specific gravity, most of sulfur distributed in the coal particles with large-size and high specific gravity. Part of sulfur may be eliminated through special gravity separation, however, most of inorganic sulfur should be removed with the combination of floatation process.

关键词： washability coal gangue screen test float-and-sink analysis desulfurization

Relationship Between Coal Facies and washability of High-Sulfur Coal

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International Journal of Mining Science and Technology 2000年第1期21卷 75-78页

作者：代世峰唐跃刚张卫彪焦方立马凤学李宝春

The petrographic characteristics and facies of the high-sulfur coal (No. 9 coal seam) in Wuda coalfield were analyzed and the washability of stratified coal samples formed in the different coal facies was discussed using the density component method of coal petrology. The results show that the washability of different stratified coal samples in tbe same coal facies is similar, and the accumulating environment of peat swamp controlls the contents and the occurrence of minerals, and thus controll the coal washability. The washability or the stratified coal formed in high peat swamp is better than that formed in low peat swamp.

关键词： coal facies peat swamp washability Wuda coalfield

Rational design and evaluation of UV curable nano-silver ink applied in highly conductive textile-based electrodes and flexible silver-zinc batteries

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Journal of Materials Science & Technology 2022年第6期101卷 294-307页

作者： Hong Hong Lihong Jiang Huating Tu Jiyong Hu Kyoung-Sik Moon Xiong Yan Ching-ping Wong Key Laboratory of Textile Science&Technology Ministry of EducationDonghua UniversityShanghai 201620China Key Laboratory of High Performance Fibers&Products Ministry of EducationDonghua UniversityShanghai 201620China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332United States

The possibility of printing conductive ink on textiles is progressively researched due to its potential benefits in manufacturing functional wearable electronics and improving wearing ***,few studies have reported the effect of conductive ink formulation on electrodes directly screen-printed on flexible substrates,especially printing UV curable conductive ink on common *** this work,a novel UV curable nano-silver ink with short-time curing and low temperature features was developed to manufacture the fully flexible and washable textile-based electrodes by screen *** aim of this study was to determine the influence of ink formulation on UV-curing speed,degree of conversion,morphology and electrical properties of printed ***,the application demonstration was *** curing speed and adhesion of ink was found depending dominantly on the type of prepolymer and the functionality of monomer,and the type of photoinitiator had a decisive effect on the curing speed,degree of double bond conversion and morphology of printed *** nano-silver content is key to guarantee the suitable screen-printability of conductive ink and therefore the uniformity and high conductivity of textile-based ***,an ink formulation with 60 wt%nano-silver meets the potential application *** electrode with 1.0 mm width showed significantly high electrical conductivity of 2.47×10^(6)S/m,outstanding mechanical durability and satisfactory *** high-performance of electrodes screen-printed on different fabrics proved the feasibility and utility of UV curable nano-silver *** addition,the application potential of the conductive ink in fabricating electronic textiles(e-textiles)was confirmed by using the textile-based electrodes as the cathodes of silverzinc *** anticipate the developed UV curable conductive ink for screen-printing on textiles can provide a novel design opportunity for flexible and

关键词： Nano-silver ink formulation UV curing Textile-based electrodes High conductivity Mechanical durability washability

Printable elastic silver nanowire-based conductor for washable electronic textiles

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Nano Research 2020年第10期13卷 2879-2884页

作者： Hong-Wu Zhu Huai-Ling Gao Hao-Yu Zhao Jin Ge Bi-Cheng Hu Jin Huang Shu-Hong Yu Division of Nanomaterials&Chemistry Hefei National Laboratory for Physical Sciences at the MicroscaleInstitute of EnergyHefei Comprehensive National Science CenterCAS Center for Exclilence in NanoscienceDepartment of ChemistryUniversity of Science and Technology of ChinaHefei 230026China

Printable elastic conductors promote the wide application of consumable electronic textiles (e-textiles) for pervasive healthcare monitoring and wearable computation. To assure a clean appearance, the e-textiles require a washing process to clean up the dirt after daily use. Thus, it is crucial to develop low-cost printable elastic conductors with strong adhesion to the textiles. Here, we report a composite elastic conductor based on Ag nanowires (NWs) and polyurethane elastomer. The composite could be dispersed into ink and easily printed onto textiles. One-step print could form robust conductive coatings without sealing on the textiles. Interestingly, the regional concentration of Ag NWs within the polyurethane matrix was observed during phase inversion, endowing the elastic conductor with a low percolation threshold of 0.12 vol.% and high conductivity of 3,668 S·cm^−1. Thanks to the high adhesion of the elastic conductors, the resulted e-textiles could withstand repeated stretching, folding, and machine washing (20 times) without obvious performance decay, which reveals its potential application in consumable e-textiles.

关键词： printable elastic conductor electronic textiles washability phase inversion silver nanowires

Facile fabrication of highly conductive, waterproof, and washable e-textiles for wearable applications

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Nano Research 2021年第4期14卷 1043-1052页

作者： Ben Niu Su Yang Tao Hua Xiao Tian MingKin Koo Nanotechnology Center Institute of Textiles&ClothingThe Hong Kong Polytechnic UniversityHung HornHong Kong 999077China

曰ectronic textiles(e-textiles),known as a newly-developed innovation combining the textile and electronic technologies,are burgeoning as the next-generation of wearable electronics for lots of promising ***,a big concern is the durability of the e-textiles during practical ***,we describe a facile method tofabricate mechanically and electrically durable e-textiles by chemical deposition of silver nanoparticles(AgNPs)on widely used cotton *** interface between AgNPs and fabric was tightly strengthened by the bioinspired polydopamine,and a highly waterproof and anticorrosive surface was further obtained by modifying with a fluorine containing agent of 1H,1H,2H,2/~/-perfuorodecanethiol(PFDT).In addition to the low sheet resistance of 0.26 ohm/sq and high conductivity of 233.4 S/cm,the e-textiles present outstanding stability to different mechanical deformations including ultrasonication,bending and machine ***,thanks to the surface roughness of AgNPs and low surface energy of PFDT,a superhydrophobic surface,with a water contact angle of ca.152°,was further obtained,endowing the e-textiles excellent anti-corrosion to water,acid/alkaline solution and various liquids(e.g.,milk,coffee and tea).Finally,the application of this highly conductive e-textiles in wearable thermal therapy is *** with the facile,all-solution-based,and environmentally friendly fabrication protocol,the e-textiles show great potential of large-scale applications in wearable electronics.

关键词： electronic textiles silver nanoparticles washability waterproof

Beneficiation of an Indian non-coking coal by column flotation

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International Journal of Coal Science & Technology 2016年第2期3卷 206-214页

作者： N. Vasumathi T. V. Vijaya Kumar S. Ratchambigai S. Subba Rao S. Prabhakar G. Bhaskar Raju CSIR-National Metallurgical Laboratory Madras Centre CSIR Madras Complex Taramani Chennai 600 113 India

Beneficiation of non-coking coal is gaining ground in India. It not only reduces the volume of inert content to be transported to the power plant and also lowers the wear in the boiler houses. For special applications such as the fuel for integrated gasification combined cycle plant （IGCC）, the ash content in the coal should preferably be below 15 %. Indian coals are characterized by high inter-grown ash content mainly due to ＇drift origin＇ of Gondwana formation in Permian age. This warrants fine grinding of non-coking coal in order to liberate the ash forming minerals from coal macerals. A non- coking coal sample of vitrinite type from India was ground to 44 ~tm （dso） and subjected to column flotation to improve its quality. The non-coking coal analyzing 34.6 % ash, 26.2 % volatile matter, 1.3 % moisture and 37.9 % fixed carbon could be upgraded to a concentrate/froth of 14.83 % ash at 72.18 % yield by optimizing collector and frother dosages and flotation column operating parameters, namely, froth depth, superficial feed velocity and superficial air velocity. The concentrate produced by this process is suitable as fuel for IGCC in coal-to-electricity route.

关键词： Non-coking coal washability Beneficiation Column flotation Coal gasification