Steel Output of JISCO Exceeded 10 Million Tons Again

Up to Dec. 25th, 2012, the steel output of JISCO （Jiuquan Iron ＆ Steel （Group） Co.） had exceeded 10 million tons again succeeded 2011,

Increasing Speed of China's Crude Steel Output Will Decline in 2012 and 2013

On Nov. 27th. China Metalh, rgical Industry Planning and Research Institute released the forecasted results for China＇s I ＆ S demand in 2013. According to the economic situation in China and overseas and the development of downstream industries, it＇s estimated China＇s crude steel output in 2012 will reach 716 million tons up 4.5% YOY.

Spatial Interactions of China's Steel Output: An Empirical Analysis Based on Chinese Inter-provincial Panel Data

In view of the extensive growth of China's steel production in recent years, this paper analyzed the industrial development background and economic geography theory, and discussed the possible spatial interaction mechanism. Based on panel data of China's inter-provincial steel output from 2001 to 2015, using spatial econometric model, this paper also explored whether China's provincial steel production shows material orientation, market orientation and traffic orientation, and isolated spatial interactions of interprovincial steel output. The results showed that the inter-provincial steel production in China did show both material orientation, market orientation and traffic orientation and that there was a significant negative spatial interaction, indicating that there might be strong competition and a crowing-out effect between neighboring provinces, and that the smaller the spatial scope, the more significant the spatial interactions of steel production.

Dynamic design of a nonlinear energy sink with NiTiNOL-steel wire ropes based on nonlinear output frequency response functions

A novel vibration isolation device called the nonlinear energy sink(NES)with NiTiNOL-steel wire ropes(NiTi-ST)is applied to a whole-spacecraft system.The NiTi-ST is used to describe the damping of the NES,which is coupled with the modified Bouc-Wen model of hysteresis.The NES with NiTi-ST vibration reduction principle uses the irreversibility of targeted energy transfer(TET)to concentrate the energy locally on the nonlinear oscillator,and then dissipates it through damping in the NES with NiTi-ST.The generalized vibration transmissibility,obtained by the root mean square treatment of the harmonic response of the nonlinear output frequency response functions(NOFRFs),is first used as the evaluation index to analyze the whole-spacecraft system in the future.An optimization analysis of the impact of system responses is performed using different parameters of NES with NiTi-ST based on the transmissibility of NOFRFs.Finally,the effects of vibration suppression by varying the parameters of NiTi-ST are analyzed from the perspective of energy absorption.The results indicate that NES with NiTi-ST can reduce excessive vibration of the whole-spacecraft system,without changing its natural frequency.Moreover,the NES with NiTi-ST can be directly used in practical engineering applications.

在困境中砥砺前行——2023年我国钢管行业高质量发展之路

介绍了2023年以来我国钢管行业的运行情况。回顾了2023年及2024年1—4月钢管企业在生产经营、科技创新、新产品开发、技术改造、绿色低碳发展和数字化、智能化发展以及标准制(修)订等方面取得的主要成绩。指出了钢管行业目前发展的重点:继续立足科技创新,加快形成新质生产力,深化产品结构调整,强化精益管理,加快推动数字化和智能制造的发展以及加强行业自律等。

产能产量双控背景下方大特钢财务分析启示

基于产能产量双控、绿色低碳转型和产业集中度提升的大背景下,针对方大特钢资本结构与偿债能力、营运能力、盈利能力等方面对其近10年的财务状况、生产经营状况、发展历程进行了分析,最后基于方大特钢的财务分析,对钢铁行业未来如何更好实现高质量发展,提出了可供其他钢铁企业参考的启示和建议。

Enhancing mergers and acquisition quality,accelerating technological innovation and achieving the second leap of China's steel industry

Over the past 10 years, China＇s steel industry has made a substantial development in terms of scale, and has finally become a steel giant in the world. In the upcoming 10 years, fundamental changes will be made with the economic growth in China. Against this background, China＇ s steel industry will shift from a rapid development to a slow but sound development. In order to fulfill the second leap of China＇s steel industry, based on its current developing status and characteristics, and from the perspective of both national and corporate development, mergers and acquisition are both effective ways to raise the quality of the existing stock of asset in the steel industry, while technological innovation is the solid foundation for its second leap.

A process-level hierarchical structural decomposition analysis (SDA) of energy consumption in an integrated steel plant

A hierarchical structural decomposition analysis(SDA) model has been developed based on process-level input-output(I-O) tables to analyze the drivers of energy consumption changes in an integrated steel plant during 2011-2013. By combining the principle of hierarchical decomposition into D&L method, a hierarchical decomposition model for multilevel SDA is obtained. The developed hierarchical IO-SDA model would provide consistent results and need less computation effort compared with the traditional SDA model. The decomposition results of the steel plant suggest that the technology improvement and reduced steel final demand are two major reasons for declined total energy consumption. The technical improvements of blast furnaces, basic oxygen furnaces, the power plant and the by-products utilization level have contributed mostly in reducing energy consumption. A major retrofit of ancillary process units and solving fuel substitution problem in the sinter plant and blast furnace are important for further energy saving. Besides the empirical results, this work also discussed that why and how hierarchical SDA can be applied in a process-level decomposition analysis of aggregated indicators.

中国钢管历年进出口情况综述

简要介绍了我国钢管历年来的产量、表观消费量及自给率情况,详细介绍了历年来我国钢管、无缝钢管和焊接钢管的进出口数量、主要品种数量及进出口国别情况。指出1955年我国钢管生产量超过进口量,1982年我国开始出口钢管;2003年我国成为钢管净出口国,2015年钢管净出口量达到891.83万t。钢管出口量的大幅增长和进口量的大幅下降,使我国钢管进出口格局发生了重大变化,在国际市场上的竞争力得到极大提高,影响力不断扩大。

碳交易政策背景下钢铁行业碳绩效评价分析

在最近的十年中,我国在绿色发展和节能减排等领域取得了长足的进展。但是由于传统绩效评价体系缺乏对碳排放、环境保护等指标的关注,只是简单地把碳排放当做财务绩效评价体系的非关键指标,导致企业在节能减排方面的作为难以获得相应的回报。钢铁行业作为高污染、高排放的行业,属于节能减排的重点行业,因此,基于碳排放权交易背景,以钢铁行业作为研究对象,进行碳绩效评价分析,更好地指导钢铁行业的碳减排工作,为钢铁行业提升碳绩效水平提供参考。

基于遗传算法的磨煤机运行优化方法

以平稳锅炉燃烧过程、充分挖掘系统控制潜力、提高机组运行水准为目标,研究基于遗传算法的磨煤机开关机运行优化方法。针对风、粉、煤、灰、烟等燃烧过程中的关键因素,从历史运行数据中挖掘规律,构建水冷壁温差、磨煤机小钢球用量等指标的模拟仿真模型。以遗传算法为核心实现智能化控制,在各种工况下寻找使磨煤机平均单耗降低且水冷壁温差不高于阈值的磨煤机最优控制方案,实现机组节能减排。该方案兼顾机组安全性、经济性与环保性。

我国钢铁行业能源-资本-劳动的替代弹性分析——基于超越对数生产函数

我国是钢铁生产和消费大国,粗钢产量连续13年居世界第一。2000～2007间我国粗钢产量年均增长21.1%。2008年,粗钢产量达到5亿吨,占全球产量的38%,国内粗钢表观消费量4.53亿吨,直接出口折合粗钢6000万吨,占世界钢铁贸易量的15%。但是钢铁工业是大而不强,同时,钢铁也是一个高耗能、高污染的产业,是节能减排潜力最大的行业之一。本文以能源、劳动、资本为投入要素建立了一个超越对数生产函数模型。估算了我国钢铁行业能源、资本、劳动力的产出弹性和替代弹性。结果表明:我国钢铁业能源与资本的替代弹性在1之间,我国钢铁行业可以促进资本对能源投入的有效替代,实现我国钢铁行业全要素能源效率的提高。

论单位生产总值钢产量及钢产量、钢铁行业的能耗、物耗和排放

单位生产总值钢产量指标对于调控钢产量,开展钢铁行业的节能、降耗和减排工作具有重要意义。首先给出了单位生产总值钢产量定义式,引入了"在役钢量"概念及其计算式;然后对单位GDP钢产量的定义式进行了两次变换,导出具有分析功能的新定义式;并以新定义式和钢产量计算式、钢铁行业能耗、物耗和排放计算式为依据,对钢产量及钢铁行业的能耗、物耗和排放进行了分析;最后,进行了与钢铁行业相关各参数的分类,并提出全面推进钢铁行业节能、降耗、减排工作的总体看法。

非线性动态系统的递归神经网络预测研究——对我国钢铁产量的预测分析

钢铁行业是我国国民经济的支柱产业之一,为国民经济的持续发展作出了积极的贡献。因此,对钢铁产量的预测研究已经成为一项非常重要的课题。文章使用基于数据挖掘和知识发现的人工神经网络法、时间序列分析法、递归神经网络技术来预测钢铁产量的方法,并将递归神经网络方法预测的结果与前面的两种方法的预测结果进行比较,比较的结果说明该方法是可行的。

钢产量增长机制的解析及2000—2007年我国钢产量增长过快原因的探索

分两步解析钢产量的增长机制,首先在若干假设条件下提出了钢产量增长的基准模式,其主要特点是钢产量与GDP同步增长,分析了基准模式下的钢产量、在役钢量、GDP以及它们的年增长率;然后讨论偏离基准模式的各种可能性,及其对钢产量增速的影响。在此基础上得到了钢产量年增长率的基本计算式。分析了偏离基准模式对单位GDP钢产量的影响。在对钢产量增长机制进行解析的基础上,广泛联系全社会发生的各种现象,提出使我国钢产量增速远远超过GDP增速的16种现象,提出在宏观调控工作中,要区别对待这些现象。从中、日、美三国单位GDP钢产量数据对比可见,我国降低单位GDP钢产量的空间很大。文章为我国钢铁行业的宏观调控提供了新思路。

中国钢铁行业能源内部的替代弹性分析——基于超越对数生产函数

本文运用中国钢铁行业滞后一期的产出代替劳动和资本变量,把钢铁行业能源投入要素分解为煤炭、石油、天然气和电力的投入,建立了一个超越对数生产函数模型,用岭回归估算了中国钢铁行业各能源品种投入要素的产出弹性、替代弹性。结果表明:煤炭与石油、煤炭与天然气、煤炭与电力的替代弹性在1左右,中国钢铁行业可通过用石油、天然气、电力替代煤炭来实现其行业全要素能源效率的提高。

河北钢铁产业调整的波及效应及节能减排研究

本文利用投入产出方法研究了河北钢铁产业对其他工业部门的波及效应,依据历年统计资料和相关文献分析了河北省主要耗能产业的能源消耗和污染物排放水平,模拟分析了缩减河北钢铁产业规模带来的节能减排效果。研究表明:河北省钢铁产业影响力系数为1.264,感应度系数为3.285,其发展对其他各产业的影响带动作用和受其他产业发展的拉动效应都非常明显;河北钢铁产业对重工业各部门的同向波及效应比较明显,其总产值变动10%时会波及石油和天然气开采业总产值变动33.35%,金属矿采选业总产值变动17.37%,煤炭开采和洗选业总产值变动18.00%,金属制品业总产值变动6.92%。压缩钢铁产业规模既有助于淘汰钢铁过剩产能又有利于扭转河北工业结构不断重型化的趋势。在钢铁产业粗钢产量下降6 000万t的波及影响下,河北省前十大耗能产业的能耗将比2012年可降低19.76%(4 662.02万t标准煤),CO2、SO2、NOx和烟粉尘排放量将分别下降15.41%(10 163.21万t)、23.57%(31.61万t)、8.68%(15.29万t)和28.51%(35.24万t)。淘汰落后产能和治理环境污染已成为河北省发展需优先解决的两大难题,而缩减钢铁产业规模应该成为河北省解决两大难题的关键步骤和重要举措。本文的研究既为解决河北省产能过剩问题提供了理论支撑,同时也为合理制定国家钢铁工业规划和相关政策提供了理论依据。

我国钢铁行业发展水平、产业关联特征及影响因素——基于投入产出法的动态研究

运用1997、2002和2007年的投入产出表,对我国钢铁行业的发展水平、产业关联特征以及影响因素进行了实证分析。研究发现:近年来,我国钢铁行业仍属于"低附加值、高带动型"的产业;其发展动力主要是中间需求,最终需求的拉动作用略有上升;感应度系数和影响力系数有所波动,但影响力系数一直高于行业平均水平;第二产业对钢铁行业价值创造能力的影响有所下降,而第三产业的影响得到显著提高;对我国钢铁行业发展影响最大的是投资和出口。