GOALI/IUCP: Electric-Field-Enhanced Smelting and Refining of Iron and Steel

GOALI/IUCP：电场强化钢铁冶炼和精炼

• 批准号: 9820788
• 负责人: Uday Pal
• 金额: $ 36万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2002-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9820788&HistoricalAwards=false
• 关键词: GOALI; IUCP; Electric; Field; Enhanced

A method for increasing the rate of slag-metal reactions during iron and steel manufacture on an industrial scale, will be demonstrated. The method involves creating an external electronically conducting circuit and applying an electric field across the slag layer to increase the current through the external circuit. This technique has been demonstrated on a lab-scale for the reaction between iron oxide in slag and carbon in liquid iron, and the reaction rate was increased by over 100%, even at low concentrations of iron oxide in the slag. The method will be tested on other oxides that are relevant to the stainless steel producers, such as Cr2O3 and MnO. Since scale-up of the process is an important goal, a comprehensive mathematical model will be developed employing software for fluid flow and chemical thermodynamics. This will yield a prediction of fluid velocity, temperature, and composition as a function of position and time in the slag phase. The lab and mathematical modeling results obtained during this program, along with earlier results obtained on iron oxide reduction, will be used to conduct larger-scale tests. Success of this technology will maximize metallic yield, limit or decrease coke (reductant) requirements, decrease refining time and consumption of refining agents, improve yield of alloying elements and minimize waste generation. In essence, it will lead to significant energy and cost savings along with environmental benefits for the iron and steel producers. An economic benefit analysis of industrial implementation will be performed.

将展示一种在工业规模的钢铁制造过程中提高炉渣-金属反应速率的方法。 该方法包括创建外部电子传导电路并在渣层上施加电场以增加通过外部电路的电流。 该技术已在实验室规模上证明了炉渣中的氧化铁与铁水中的碳之间的反应，即使在炉渣中氧化铁浓度较低的情况下，反应率也提高了100％以上。该方法将针对与不锈钢生产商相关的其他氧化物进行测试，例如 Cr2O3 和 MnO。 由于工艺放大是一个重要目标，因此将利用流体流动和化学热力学软件开发综合数学模型。这将产生作为渣相中位置和时间的函数的流体速度、温度和成分的预测。 该计划期间获得的实验室和数学模型结果以及早期获得的氧化铁还原结果将用于进行更大规模的测试。 该技术的成功将最大限度地提高金属产量，限制或减少焦炭（还原剂）需求，减少精炼时间和精炼剂的消耗，提高合金元素的产量并最大限度地减少废物的产生。 从本质上讲，这将为钢铁生产商带来显着的能源和成本节约以及环境效益。 将进行工业实施的经济效益分析。