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不锈钢粉尘的物理化学特性分析

赵海泉 , 齐渊洪 , 史永林

钢铁研究学报 doi:10.13228/j.boyuan.issn1001-0963.20160092

不锈钢粉尘是一种产生量大、粒度细小、杂质含量高、极具回收利用价值的二次资源。为了开发不锈钢粉尘高效利用工艺,采用化学分析、XRD、扫描电镜等方法,对 EAF 和 AOD 不锈钢除粉尘的化学成分、粒度、物相组成、Cr6+浸出及微观形貌进行了研究。结果表明,不锈钢粉尘中 Ni、Cr、Fe含量较高,且均以氧化物形式存在;粉尘中的主要物相有铬铁尖晶石、磁铁矿、钙镁橄榄石、石英及石灰等;粉尘中的 Cr6+含量极少,低于国家危险废弃物的限制要求,但高于饮用水国家标准。

关键词: 不锈钢粉尘 , EAF , AOD , , 微观结构

DYNAMIC MODEL AND SIMULATION OF EAF STEELMAKING PROCESS

Q.Li , X.Hong

金属学报(英文版)

Based on mass and energy balances and theories of thermodynamics and kinetics,a dynamic model in conjunction with relative operation parameters was derived.With this model,the EAF process in later stage of scarp melting was dynamically described,including time dependent variations of bath temperature ,slag quantity ,compositions of steel,slag and off-gas,etc.Steelmaking process in a domestic 100 ton UHP AC EAF was chosen as a computational example,and the simulated variations of temperature of hot metal and element contents was shown consistent with the actual process measurements within average error scopes of |△T|≤15K,|[△%C]|≤0.036,|[△%Si]|≤0.00027,|[△%Mn]|≤0.002,|[△%P]|≤0.00089 and |[△%S]|≤0.001 respectively at the test points.The model will be extended to predict the whole production process including scrap melting procedure and evaluate its energy and material consumption,the production efficiency,etc.,which will provide assistance for the improvement of EAF operation and control.

关键词: EAF , null , null

电弧炉热装铁水工艺的应用与优化

肖连华 , 崔宝民 , 刘翠花 , 孙宽

上海金属 doi:10.3969/j.issn.1001-7208.2000.05.003

对装入量为18t的电弧炉热装铁水工艺进行了试验和应用,并从铁水装入时间,供氧制度,供电制度和造渣等方面对工艺进行优化,在生产中取得了较好的效益,也提出了今后的努力方向。

关键词: 电弧炉 , 热装铁水 , 工艺优化 , 炼钢

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