转炉低硅高磷铁水生产低磷钢

IF 1.7 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Ironmaking & Steelmaking Pub Date : 2023-03-06 DOI:10.1080/03019233.2023.2173877

Prakash Gupta, Sujeet Kumar, Jallu Hari Babu, Gopal Mali, Tapas Kumar Roy

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引用次数: 0

摘要

在碱性氧炉(BOF)中使用高磷(平均0.17%)和低硅(≤0.5%)且Si/P比<3的铁水生产低磷(≤0.015%)钢是一项具有挑战性的任务。除了温度、炉渣碱度和FeO外，炉渣的质量也很重要，而高石灰的添加量可以达到这一目的。然而，多少石灰是合适的需要了解。工厂数据的详细分析表明，在现有水平上存在降低石灰添加量的范围。因此，系统试验表明，石灰用量减少12%没有效果，而石灰用量减少19%则使末吹(EB) P增加20 ppm。SEM-EDX研究表明，在试热过程中，炉渣样品的化学和形态发生了变化。石灰的添加方式也对EB P有影响，在10-25%的吹氧时间内少量添加石灰可降低EB P。

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Production of low phosphorous steel from low silicon high phosphorous hot metal in BOF

ABSTRACT Production of low phosphorous (≤0.015%) steel in Basic Oxygen Furnace (BOF) using high phosphorous (average 0.17%) and low silicon (≤0.5%) hot metal with Si/P ratio <3 is a challenging task. In addition to temperature, slag basicity and FeO, the quantity of slag becomes important which is achieved by higher lime addition. However, how much lime is appropriate need to be understood. A detailed analysis of plant data indicated that a scope exists for lowering lime addition from existing level. Accordingly, systematic trials were conducted with reduction in lime which showed that lowering 12% lime had no effect while 19% reduction increased end blow (EB) P by 20 ppm. SEM-EDX studies of slag samples revealed chemical and morphological changes in trial heats. Lime addition pattern was also found to impact EB P. Addition of lime in a small batch during 10–25% of the oxygen blow resulted lower EB P.

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来源期刊

Ironmaking & Steelmaking 工程技术-冶金工程

CiteScore

3.70

自引率

9.50%

发文量

125

审稿时长

2.9 months

期刊介绍： Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.