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Recycling of ironmaking and steelmaking slags in Japan and China

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International Journal of Minerals,Metallurgy and Materials 2022年第4期29卷 739-749页

作者： Hiroyuki Matsuura Xiao Yang guangqiang li Zhangfu Yuan Fumitaka Tsukihashi Graduate School of Engineering The University of TokyoTokyo 113-8656Japan Key Laboratory of Coastal Environment and Resources of Zhejiang Province School of EngineeringWestlake UniversityHangzhou 310024China Institute of Advanced Technology Westlake Institute for Advanced StudyHangzhou 310024China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China The University of Tokyo Tokyo 113-8656Japan

The mass production of steel is inevitably accompanied by large quantities of *** treatment of ironmaking and steelmaking slags is a great challenge in the sustainable development of the steel *** and China are two major steel producing countries that have placed a large emphasis on developing new technologies to decrease slag emission or promote slag *** are almost completely reused or recycled in ***,due to stagnant infrastructural investments,future applications of slags in conventional sectors are expected to be *** new functions or applications of slags has become a research priority in *** example,the utilization of steelmaking slags in offshore seabeds to create marine forests is under *** is the top steel producer in the *** utilization ratios of ironmaking and steelmaking slags have risen steadily in recent years,driven largely by technological *** example,hot stage processing of slags for materials as well as heat recovery techniques has been widely applied in steel plants with good ***,increasing the utilization ratio of basic oxygen furnace slags remains a major *** innovations in slag recycling are crucial for the steel industries in Japan and ***,the current status and developing trends of utilization technologies of slags in both countries are reviewed.

关键词： ironmaking steelmaking slag recycling seawater stabilization

火法制备硫化亚锡的反应机理与产物稳定性研究

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武汉科技大学学报 2024年第1期47卷 11-19页

作者：尹天骅李光强马江华袁文来武汉科技大学省部共建耐火材料与冶金国家重点实验室湖北武汉430081 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室湖北武汉430081 黄石金朝阳粉末材料有限责任公司湖北黄石405006

本文结合热力学分析和实验,研究了火法制备SnS时,原料配比、反应条件对产物纯度、稳定性的影响机理。结果表明,当反应温度超过440℃,S和Sn反应较快,主要产物为SnS;当反应温度为440℃,S与Sn配料的初始摩尔比在1.2~1.4之间时,所制SnS呈现... 详细信息

本文结合热力学分析和实验,研究了火法制备SnS时,原料配比、反应条件对产物纯度、稳定性的影响机理。结果表明,当反应温度超过440℃,S和Sn反应较快,主要产物为SnS;当反应温度为440℃,S与Sn配料的初始摩尔比在1.2~1.4之间时,所制SnS呈现层状结构,产物主要成分是SnS,含有少量Sn2S3和极少量Sn;随着原料中S比例增加,产物中SnS含量先增加后减小,在硫锡摩尔比为1.25时达到最高值92.95%,此时Sn2S3含量为5.48%,Sn含量为1.57%;合成产物在微氧气氛中,在约350℃时开始产生Sn(SO4)O2杂质,温度升高到700℃,产物中的Sn(SO4)O2和Sn2S3会先后分解,分解的最终产物为SnS。

关键词： SnS 火法合成硫锡摩尔比纯度产物稳定性

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转炉碳磷氧化转折温度的热力学模型

炼钢 2024年第3期40卷 8-14,26页

作者：张嘉欣李光强张蓬朝田雨丰刘昱武汉科技大学省部共建耐火材料与冶金国家重点实验室湖北武汉430081 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室湖北武汉430081 武汉科技大学钢铁冶金新工艺湖北省重点实验室湖北武汉430081

高碳出钢对于提高钢液洁净度十分有利,但同时也给转炉脱磷带来了严峻挑战。针对高碳出钢时脱磷时间缩短、冶炼中后期发生回磷现象等问题,建立了基于离子分子共存理论(IMCT)的转炉碳磷氧化转折温度的热力学模型。通过该模型预测了最佳一... 详细信息

高碳出钢对于提高钢液洁净度十分有利,但同时也给转炉脱磷带来了严峻挑战。针对高碳出钢时脱磷时间缩短、冶炼中后期发生回磷现象等问题,建立了基于离子分子共存理论(IMCT)的转炉碳磷氧化转折温度的热力学模型。通过该模型预测了最佳一次倒渣温度区间。为了避免冶炼中后期发生回磷现象,应在合适的倒渣温度区间内倒渣,同时实现转炉双渣吹炼一次倒渣高效脱磷。结合现场生产数据及脱磷热力学,重点分析当一倒渣碱度、一倒渣中MgO含量、一倒渣中FeO含量等参数变化时对各组元活度的影响,从而判断出对最佳一倒温度区间的影响,找到碳磷发生选择性氧化的最佳温度区间。

关键词：转炉炼钢碳磷选择性氧化脱磷渣活度温度

Pitting corrosion behavior of cerium treated HSLA steel induced by sulfide inclusions in 3.5 wt% NaCl solution

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Journal of Rare Earths 2021年第3期39卷 348-356,I0004页

作者： Wan Zheng Xueqiang Yan Shan Xiong Guowei Wang guangqiang li State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan 430081China

Pitting corrosion behavior of Ce treated HSLA steels induced by sulfide inclusions in 3.5 wt% NaCl solution was investigated with potentiodynamic polarization and immersion corrosion *** results show that Ce added steels exhibit better pitting corrosion resistance with lower corrosion current density and bigger pitting potential compared with steel without Ce,which is mainly attributed to optimized characteristics of spherical Ce-oxysulfide inclusions with less number density,smaller average size and lower pitting corrosion *** spherical Ce_(2)O_(2) S inclusions precipitated on the surface of CeAlO_(3) inclusions in the Ce added steels induce pits with bigger opening mouth and shallow depth,reducing their tendency of extension to go deeper due to occlusion corrosion battery in the pitting ***,corrosion inhibitor Ce(OH)_(3) generated by Ce_(2)O_(2) S hydration can weaken electrochemical corrosion of the matrix micro-region around the *** avoid harmful bigger inclusions,Ce content in steels should be regulated within reasonable range,0.015 wt% Ce in present steels effectively modified inclusions to acquire the best pitting corrosion resistance of the steels.

关键词： HSLA steel Ce treatment Inclusion modification Pitting evolution Corrosion inhibitor Corrosion resistance

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基于BP神经网络的钢包渣眼演化行为的预测

钢铁研究学报 2024年第4期36卷 469-480页

作者：刘晓航王肸杰刘畅贺铸李光强王强武汉科技大学省部共建耐火材料与冶金国家重点实验室湖北武汉430081 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室湖北武汉430081 武汉工程大学资源与安全工程学院湖北武汉430073

钢包底吹精炼过程中,渣眼行为对钢成分和夹杂物数量的调控有着至关重要的作用。由于生产现场工况复杂、温度较高、成本较大等原因,现场测试存在一定难度和危险,测试结果的精度也无法保证。为准确探究钢包底吹孔位置、单孔底吹气体流量... 详细信息

钢包底吹精炼过程中,渣眼行为对钢成分和夹杂物数量的调控有着至关重要的作用。由于生产现场工况复杂、温度较高、成本较大等原因,现场测试存在一定难度和危险,测试结果的精度也无法保证。为准确探究钢包底吹孔位置、单孔底吹气体流量和渣层厚度对渣眼面积的影响,采用1∶5的相似比,以150 t实际工业钢包为原型建立水模型,利用BP神经网络算法拟合实验数据生成模型,对精炼过程中渣眼的演化行为进行预测。分析表明,当隐藏层神经元数目n=16,迭代次数Epoch=60000时,模型损失函数Error值达到最小,决定系数R^(2)=93.439%,模型性能优异,预测精度满足工业需求,可有效地指导工业生产。

关键词： BP神经网络 150t工业钢包渣眼演化水模型单孔底吹

形变强化和逆相变细晶强化对Fe-18Cr-8Ni钢耐腐蚀性能的影响

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中国腐蚀与防护学报 2024年第2期44卷 429-436页

作者：王智慧吴雷姜懿珊张弦万响亮李光强吴开明武汉科技大学、钢铁冶金及资源利用省部共建教育部重点实验室武汉430081 武汉科技大学、绿色制造工程研究院武汉430081 武汉科技大学、高性能钢铁材料及其应用省部共建协同创新中心武汉430081

利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、电子背散射衍射(EBSD)和电化学工作站等对奥氏体不锈钢的微观组织及电化学腐蚀行为进行了分析。结果表明,形变强化和逆相变细晶强化提高了奥氏体不锈钢在3.5%NaCl溶液中的耐点蚀性能,晶... 详细信息

利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、电子背散射衍射(EBSD)和电化学工作站等对奥氏体不锈钢的微观组织及电化学腐蚀行为进行了分析。结果表明,形变强化和逆相变细晶强化提高了奥氏体不锈钢在3.5%NaCl溶液中的耐点蚀性能,晶粒细化导致晶界密度的增加,提高了Cr在晶界中的扩散速率,从而提高钝化膜的稳定性与致密性。经过敏化处理后形变强化和逆相变细晶强化提高了奥氏体不锈钢的耐晶间腐蚀能力。碳化铬析出物周围形成的贫铬区降低了耐晶间腐蚀性能,而在超细晶/细晶组织中Cr的快速扩散促进了贫铬区的快速愈合,提高了耐晶间腐蚀性能。

关键词：奥氏体不锈钢形变强化细晶强化晶间腐蚀

Quantitative Inversion of REEs in Ion-Adsorbed Rare Earth Ores from the liutang Area(South China),Based on Measured Hyperspectral Data

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Journal of Earth Science 2023年第4期34卷 1068-1082页

作者： Gong Cheng Hongrui Zhang Huan li Xiaoqing Deng Safiyanu Muhammad Elatikpo Jiaxuan li Zhenguang Hu guangqiang li Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of EducationSchool of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China School of Mathematics and Statistics Hunan University of Technology and BusinessChangsha 410205China Chinalco Guangxi Nonferrous Rare Earth Development Co. Ltd.Nanning 532299China

Rare earth minerals are important strategic resources to economic development all over the *** this study,multiple linear regression and back propagation(BP) neural network methods are used to invert the contents of ion adsorbed rare earth elements(REEs) and exploring the feasibility of quantitative inversion of REEs through measured hyperspectral data in liutang rare earth mines,South *** result shows that the spectral curve of the rare earth ore samples has obvious absorption characteristics around 390,930,1 400,1 900 and 2 200 nm,and continuum removal and the 1st derivative treatment can highlight the absorption *** modeling accuracies of BP neural network are higher than that of multiple linear regression *** BP neural network model of the 1st derivative data in 400–1 000 nm bands has the best inversion result of the total content of REEs,R2 reaches 0.98,the ratio of the performance to deviation(RPD) is larger than *** quantitative inversion model of each REE(except for Ce) has high precision,R2 is greater than 0.90 and RPD is greater than *** results indicate that quantitative inversion of REEs using measured spectra not only has great potential and feasibility in the exploration of rare earth minerals,but also provides a rapid test method for the content of ion-adsorbed rare earth elements.

关键词： hyperspectral ion-adsorbed ore neural network quantitative inversion rare earth ele-ments(REEs).

Introduction of porous structure:A feasible and promising method for improving thermoelectric performance of Bi_2Te_3 based bulks

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Journal of Materials Science & Technology 2018年第12期34卷 2458-2463页

作者： Jie Hu Xi’An Fan Chengpeng Jiang Bo Feng Qiusheng Xiang guangqiang li Zhu He Yawei li The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and Technology National-provincial Joint Engineering Research Center of High Temperature Materials and lining Technology Wuhan University of Science and Technology

The porous p-type BiSbTebulks containing irregularly and randomly oriented pores were obtained by artificially controlling the relative density of sintered samples during resistance pressing sintering process. It is demonstrated that the thermoelectric performances are significantly affected by the porous structure, especially for the electrical and thermal conductivity due to the enhanced carrier scattering and phonon scattering. The increasing porosity resulted in the obvious decrease in electrical and thermal conductivity, and little change in Seebeck coefficients. It is encouraging that the reduction of thermal conductivity can compensate for the deterioration of electrical performance, leading to the enhancement in thermoelectric figure of merit(ZT). The maximum ZT value of 1.0 was obtained for the sample with a relative density of 90% at 333 K. Unfortunately, the increase in porosity also brought in obvious degradations in Vickers hardness from 51.71 to 27.74 HV. It is worth mentioning that although the Vickers hardness of the sample with a relative density of 90% decreased to 40.12 HV, it was still about twice as high as that of the zone melting sample(21.25 HV). To summarize, introducing pores structure into bulks properly not only enhances the ZT value of BiTebased alloys, but also reduces the use of raw materials and saves production cost.

关键词： Thermoelectric materials Porous structure Bi_2Te_3 Thermal conductivity Vickers hardness

Joint deletion of multifunctional MGF505-7R and H240R genes generates a safe and effective African swine fever virus attenuated live vaccine candidate

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Virologica Sinica 2024年第3期39卷 355-357页

作者： Changjiang Weng li Huang guangqiang Ye Division of Fundamental Immunology National African Swine Fever Para-reference LaboratoryState Key Laboratory for Animal Disease Control and PreventionHarbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150069China Heilongjiang Provincial Key Laboratory of Veterinary Immunology Harbin 150069China

African swine fever(ASF)caused by the ASF virus(ASFV)is a highly contagious disease of pigs and wild ***,there are no safe,effective commercial vaccines *** genome of ASFV HLJ/18 contains more than 180 genes,including a few virulence-related *** these key virulence genes through individual deletion and subsequent pathogenicity testing in pigs is a laborious *** addition,some ASFV genes are indispensable for viral replication and cannot be *** the past 30 years,scientists have confirmed that certain ASFV genes particularly those host antiviral innate immune responses,are associated with the virulence of ASFV *** knockout of these genes does not impact viral replication,it does attenuate the virulence of ASFV in *** immunized with these live attenuated vaccine candidates can provide partial or complete *** on these findings,we propose a new concept that ASFV immunomodulatory genes involved in type I interferon(IFN)production,IFN-JAK-STAT signaling,inflammatory responses,cell death(involved in apoptosis,necrosis,and pyroptosis),and autophagy may be related to the pathogenicity of *** unbiased screening may identify more ASFV immunomodulatory or multifunctional genes,simplifying the confirmation of ASFV virulence-related *** line with these theories,we have identified MGF505-7R and H240R as key virulence genes determining the pathogenicity of the ASFV HLJ/18 *** of MGF505-7R,H240R alone or both attenuate the virulence of ASFV HLJ/18 in pigs,providing a paradigm for developing attenuated live vaccines from basic research results.

关键词： attenuated fever swine