金融危机对我国钢铁业的影响

文章以钢铁产业为例,分析了在金融危机的影响下,钢铁行业2008—2009年的运行态势,探讨了金融危机对我国实体经济钢铁业的影响,以及政府相应的宏观政策调控。金融危机给钢铁行业带来严重冲击的同时也为其产业调整和升级带来了难得的机遇,研究金融危机对钢铁业的影响及探讨其应对出路,对我国经济发展和制造业升级有着重大的现实意义。     

钢铁企业节能降耗问题探析——基于首钢实践的思考

作为能源、资源高度密集型的企业,我国的钢铁企业在节能降耗方面大有潜力可挖。本文分析了我国钢铁行业的能耗与排放现状以及高耗能的成因,简要介绍了首钢开展节能降耗降成本的主要做法,并对钢铁企业建立节能降耗保障体系提出了建议。     

鄂东南湘东北交接地带旅游资源联合开发探讨

鄂东南湘东北交接地带旅游资源知名度高、互补性强且成组团式集聚，旅游客源市场相似，区住交通条件好，特色旅游商品丰富，非常有利于旅游资源联合开发；在区域旅游业发展中，该地带面临日益被边缘化的趋势、在旅游开发方向上雷同现象严重、在对外旅游宣传上各自为政等一些问题；提出要理顺好区域旅游管理的协调机制、联合开拓旅游市场、联合普查旅游资源、开发特色旅游商品。     

钢铁企业电子商务系统的构建模式--上海宝钢益昌薄板有限公司的案例研究

本文以上海宝钢益昌薄板有限公司为研究对象,分析了宝钢益昌电子商务系统的构建模式,指出钢铁企业电子商务系统构建的关键路径和技术路线。认为订货-生产-销售的主流程上集成质量监测和资金监测而形成的电子商务综合系统是钢铁企业电子商务平台的构建核心。     

催化铁内电解法预处理土霉素废水

采用催化铁内电解法预处理土霉素废水,以铁铜比、pH值、反应时间及固液比为影响因素考察其对处理结果的影响。结果表明：Fe／Cu质量比为6：1、pH值为4．5、反应时间为90min、固液比为0．08时,CODcr的去除率可达到58％,废水的可生化性（BODy／CODcr）由0．1提高到0．4,为后续生化处理创造了有利条件。     

浅析我国钢铁行业的微利现象

目前我国处于工业化和城镇化加速发展的阶段,在强大需求的拉动下,钢铁工业迅速发展,但近几年受需求减少以及生产成本增加的影响,钢铁行业一直在微利状态下运行。文章通过分析52家国内钢铁上市企业的经营情况,进而探讨钢铁行业存在的问题以及可能的应对措施。     

钢锭模失效分析

为找出钢锭模的使用寿命低,多数钢锭模应用不久便发生裂纹而报废原因,本文随机统计分析了钢锭模实效的形态,采用宏观及金相分析方法,对各种实效的原因和机理进行了探讨。认为,对各种形状的小型钢锭模,采用片状石墨较为粗大的灰口铸铁,是其使用寿命低的主要原因。因此小型钢锭模的材质应选择球墨铸铁,并做相应的物理检验。     

石墨形态和数量对奥-贝球铁性能的影响

对于要求抗拉强度≥1200MPa;断后伸长率≥1%;吸收能量(无缺口试样)≥35J的奥-贝球铁,如果其球化率差于3级,球墨粗于6级且每平方毫米球墨少于180个,等温处理后的力学性能不易达到规范要求。     

A comparative study of the development mode of China's iron and steel industry

The development of China's iron and steel industry (ISI) is an important indication of China's industrialization. This paper analyses the industry from the perspectives of historical retrospect, international comparison and sustainable development. We find that China's ISI has made huge progress at the technical level. During the same period of time its over-consumption of resources and impact on the environment has dropped. However, compared with other main developed steel producers, there is still a big gap. Besides, its openness is still much lower than those of other countries.     

Automatic control system for uniformly paving iron ore pellets

In iron and steelmaking industry, iron ore pellet qualities are crucial to end-product properties, manufacturing costs and waste emissions. Uniform pellet pavements on the grate machine are a fundamental prerequisite to ensure even heat-transfer and pellet induration successively influences performance of the following metallurgical processes. This article presents an automatic control system for uniformly paving green pellets on the grate, via a mechanism mainly constituted of a mechanical linkage, a swinging belt, a conveyance belt and a grate. Mechanism analysis illustrates that uniform pellet pavements demand the frontend of the swinging belt oscillate at a constant angular velocity. Subsequently, kinetic models are formulated to relate oscillatory movements of the swinging belt’s frontend to rotations of a crank link driven by a motor. On basis of kinetic analysis of the pellet feeding mechanism, a cubic B-spline model is built for numerically computing discrete frequencies to be modulated during a motor rotation. Subsequently, the pellet feeding control system is presented in terms of compositional hardware and software components, and their functional relationships. Finally, pellet feeding experiments are carried out to demonstrate that the control system is effective, reliable and superior to conventional methods.