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第五届国际炼铁科技大会

作者： Daniel Maldonado paul zulli Peter Austin Mark Walsh John Mathieson Harold Rogers BlueScope Steel Research Port Kembla BlueScope Steel Ironmaking Department Port Kembla BHP Billiton-Newcastle Technology Centre

Pulverised coal injection started at BlueScope Steel’s Port Kembla blast furnaces in 2002. With significant economic advantages to reduce consumption of coking coal via increasing the quantity of pulverised coal injected to the blast furnaces, a three-dimensional numerical model of the blowpipe/tuyere/raceway has been developed. The model has been applied in various plant-specific investigations of blast parameters, and more recently in the development of alternate coal injection lance tip geometries. The designs with the highest potential for increasing coal burnout included swirl and high dispersive tip designs. The reduction in char load entering the furnace for the best performing alternate designs was due to an increase in coal dispersion compared with the conventional design. A full-scale trial of the swirl lance design was carried out at Port Kembla’s BF6 in mid-2008. The trial delivered promising results, with PCI rates maintained. This was despite unrelated changes to the coke ash content and the burden mix fed to the furnace, which would normally reduce furnace permeability.

关键词： coal combustion modelling injection lance tip design char burnout

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肯布拉港钢厂能源消耗和CO2排放模型

世界钢铁 2012年第3期12卷 9-16页

作者： Habib Zughbi paul zulli John G Mathieson 石磊博思格钢铁公司研究院

钢铁工业正朝着大幅降低能源消耗和CO2排放的方向努力。了解不同操作方案对节能减排的影响十分重要。综合数学模型可以作为评估不同方案的有效工具。博思格钢铁公司在肯布拉港钢厂(PKSW)采用了一种"钢铁联合企业能量和排放模型"(ISEEM)... 详细信息

钢铁工业正朝着大幅降低能源消耗和CO2排放的方向努力。了解不同操作方案对节能减排的影响十分重要。综合数学模型可以作为评估不同方案的有效工具。博思格钢铁公司在肯布拉港钢厂(PKSW)采用了一种"钢铁联合企业能量和排放模型"(ISEEM),该模型以PKSW钢厂的物料和能量平衡为基础,范围是"从原料进厂到产品输出",即包括原料准备、高炉、炼钢、轧钢及其公辅设施。ISEEM以Aspen Custom Modeller(ACM)为平台,使用一种目标定位过程建模语言,能列出系列方程,描述各个单元操作。描述了ISEEM模型的关键要素及其对PKSW钢厂不同方案和基准操作的应用评估。同时还简述了博思格钢铁公司参与的两个CO2减排项目。

关键词：集成化模型 CO2排放能量消耗

Numerical modeling of multiphase flow,heat transfer and titanium flow behavior in blast furnace hearth

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Baosteel Technical Research 2010年第S1期4卷 12-页

作者： zulli paul MALDONADO Daniel BlueScope Steel Research Port Kembla NSW 2505Australia

Understanding the complex phenomena in BF hearth is essential to increase furnace productivity and to extend furnace *** have developed several continuum-based mathematical/numerical models to simulate the multi-phase flow,heat transfer and chemical reactions in the BF *** models have generated an improved insight on the mechanisms for liquid drainage efficiency,lining erosion and wall protection in BF hearth under operational *** current paper gives an overview of these studies in three aspects:Gas flow and pressure on the liquid surface,and their effect on the drainage characteristics;The flow and temperature distributions of liquid iron in BF hearth,and the temperature distribution in the refractories;Finally,titanium behaviors due to titania injection to form Ti(C,N) -rich scaffold on the hearth surface,to protect the hearth from erosion.

关键词： blast furnace mathematical modeling fluid flow heat transfer

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Towards a sustainable geoliner construction in landflls by potential blending of fly ash with kaolin clay alternative:a review with an insight to Indian scenario

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Waste Disposal and Sustainable Energy 2024年第2期6卷 243-258页

作者： Kshitij Kumar Biswajit paul Department of Environmental Science and Engineering Indian Institute of Technology(Indian School of Mines)Dhanbad 826004JharkhandIndia

Electricity generated through coal-based Thermal Power Plants(TPPs)has played a pivotal role in shaping modern civiliza-tion,revolutionizing industries,and improving the quality of life for billions of people *** TPPs contribute to about 37%-40%of the global energy *** production,in turn,has a direct impact on the economy of any *** from this boon to humankind,these TPPs combusting coal as their primary fuel also have specific environmen-tal impacts,the major ones being water,air,and soil pollution due to unscientific disposal of high-quantity fly ash produced *** we can put this ash to good use,it may assist us in mitigating the pollution caused by *** there are many conventional uses of fly ash,such as a pozzolanic material in the cement industry,more pathways need to be discovered to balance the high generation quantities with ***,a detailed description of its use in potential geoliner applications is presented in this article.A geoliner or a landfill liner acts as a virtually impenetrable layer to mitigate the leachate penetration into the underneath subsoil and groundwater,thus preventing *** are presently some studies that support the use of only fly ash in such ***,the properties of the geoliners using it are not so good to significantly mitigate environmental degradation owing to its high permeability and low densification *** bentonite conventionally used has limited deposits and is mined intensively for its use as a natural *** depos-its must also be conserved,and an alternative material that may serve similar application benefits,like bentonite,must be *** desired aim can be fulfilled if we blend this combustion residue with other suitable materials(such as kaolinite clay)with low ***,the article focuses on the possibilities of blending fly ash with different clays for geoliner construction to improve the in

关键词： Fly ash-Geoliner Environmental management Composite liner systems Bentonite Kaolin clay

Strain-dependent alpha-synuclein spreading in Parkinson's disease and multiple system atrophy

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Neural Regeneration Research 2024年第12期19卷 2581-2582页

作者： Shuyu Zhang paul Lingor Department of Neurology School of MedicineUniversity Hospital rechts der IsarTechnical University of MunichMunichGermany Department of Neurology University Medical Center GöttingenGöttingenGermany Center for Biostructural Imaging of Neurodegeneration University Medical Center GöttingenGöttingenGermany

Parkinson's disease(PD) and atypical Parkinsonian syndromes,such as multiple system atrophy(MSA) and Dementia with Lewy bodies,are neurodegenerative movement disorders characterized by the accumulation of alphasynuclein(a-syn) *** a-syn aggregates propagate throughout the brain in a prion-like manner,where pathological a-syn recruits endogenous a-syn to form insoluble *** forms representing intermediates on the way to insoluble aggregates result in the most pronounced neurotoxic effects.

关键词： atrophy endogenous atypical

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Tensor perturbations from bounce inflation scenario in f(Q)gravity

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Science China(Physics,Mechanics & Astronomy) 2024年第2期67卷 78-92页

作者： Kun Hu Tanmoy paul Taotao Qiu Institute of Astrophysics Central China Normal UniversityWuhan 430079China School of Physics Huazhong University of Science and TechnologyWuhan 430074China National Institute of Technology Jamshedpur Department of PhysicsJamshedpur 831014India

In this paper,we construct a bounce inflation cosmological scenario in the framework of the modified symmetric teleparallel gravity,namely f(Q)theory,and investigate the tensor perturbations *** is well-known,the tensor perturbations generated in the very early Universe(inflation and pre-inflation regions)can account for the primordial gravitational waves(PGWs)that are to be detected by the next generation of GW *** discuss the stability condition of the tensor perturbations in the bounce inflation process and investigate in detail the evolution of the perturbation *** general form of the tensor power spectrum is obtained both for large as well as small scale *** a result,we show both kinds of modes(short or long wavelength modes),and the tensor spectrum may get a positive tilt in the parametric range where the tensor perturbation proves to be stable—this interestingly hints an enhancement of gravitational waves’amplitude in the background of the f(Q)bounce-inflation ***,we study the LQC-like scenario as a specific case of our model,in which,the primordial tensor power spectrum turns out to be nearly scale-invariant on both small and large scales.

关键词： bounce cosmology modified gravity cosmological perturbations

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基于软熔行为的烧结矿与纽曼混合块矿的高炉数值模拟

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基于软熔行为的烧结矿与纽曼混合块矿的高炉数值模拟

Smoking of Carica papaya in Nigeria:The rationale,the public health effects and policies for intervention

2019年全国高炉炼铁学术年会

作者：刘新亮 Tom Honeyands paul zulli Damien O'Dea Geoffrey Evans Subhasish Mitra 邱光君必和必拓铁矿市场澳大利亚纽卡斯尔大学ARC先进铁矿石技术研究中心澳大利亚卧龙岗大学ARC炼钢研究中心

本文试验研究了烧结矿、纽曼混合块矿（NBLL）及二者混合炉料的软熔行为,并采用数值模拟考察了其在高炉内的性能;研究结果表明在软熔过程中烧结矿与NBLL间存在着明显的物理和化学交互作用,此反应明显地改善了烧结矿-NBLL混合炉料的软熔... 详细信息

本文试验研究了烧结矿、纽曼混合块矿（NBLL）及二者混合炉料的软熔行为,并采用数值模拟考察了其在高炉内的性能;研究结果表明在软熔过程中烧结矿与NBLL间存在着明显的物理和化学交互作用,此反应明显地改善了烧结矿-NBLL混合炉料的软熔行为。通过使用同步辐射X射线和中子CT扫描软熔试验试样,发现混合炉料的孔隙度与单一烧结矿相近,并明显高于单一块矿,即烧结矿与NBLL间存在着物理交互作用;扫描电镜分析证实1200℃左右烧结矿中的钙开始向NBLL扩散,二者发生了明显的化学交互作用。在软熔试验基础上,高炉数值模拟结果亦证实烧结矿-NBLL混合炉料行为与单一烧结矿更接近;与具有相同炉料碱度的烧结矿相比,烧结矿-NBLL混合炉料在高炉内软熔带透气性更好、全炉压差更低、煤气利用率更高。

关键词：块矿烧结矿交互作用软熔带高炉

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Asian Pacific Journal of Tropical Medicine 2024年第3期17卷 95-96页

作者： Abolaji paul Adekeye Mental Health Department Federal Teaching HospitalIdo-EkitiEkiti StateNigeria Mental Health Department Afe Babalola UniversityAdo-EkitiEkiti StateNigeria

Psychoactive substance use is characterized by the habitual use of substances that have significant effects in altering the activities of neurotransmitters in certain regions of the ***,these alterations manifest as c... 详细信息

关键词： rational behaviour emotional

Surface engineering with ionic polymers on membranes for boron removal

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Frontiers of Chemical Science and Engineering 2024年第5期18卷 61-69页

作者： Xiting Zhang Chenyi Fang J paul Chen Sui Zhang Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117576Singapore Department of Civil and Environmental Engineering National University of SingaporeSingapore 119260Singapore College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China

Removal of boric acid from seawater and wastewater using reverse osmosis membrane technologies is imperative and yet remains inadequately addressed by current commercial *** research efforts performed post-modification of reverse osmosis membranes to enhance boron rejection,which is usually accompanied by substantial sacrifice in water *** study delves into the surface engineering of low-pressure reverse osmosis membranes,aiming to elevate boron removal efficiency while maintaining optimal salt rejection and water *** were modified by the self-polymerization and co-deposition of dopamine and polystyrene sulfonate at varying ratios and *** surfaces became smoother and more hydrophilic after *** optimum membrane exhibited a water permeability of 9.2±0.1 L·m^(-2)·h^(-1)·bar^(-1),NaCl rejection of 95.8%±0.3%,and boron rejection of 49.7%±0.1% and 99.6%±0.3% at neutral and alkaline pH,*** water permeability is reduced by less than 15%,while the boron rejection is 3.7 times higher compared to the blank *** research provides a promising avenue for enhancing boron removal in reverse osmosis membranes and addressing water quality concerns in the desalination process.

关键词： membrane low-pressure reverse osmosis boron surface engineering