Effect of refining slag compositions on its melting property and desulphurization

IF 1.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

High Temperature Materials and Processes Pub Date : 2023-01-01 DOI:10.1515/htmp-2022-0293

Shisen Li, Lingzhong Kong, Zhaolong Xu

引用次数: 0

Abstract

Abstract To investigate the feasibility of the refining slag with low fluoride, some oxides such as Al 2 O 3 , SiO 2 , B 2 O 3 , and Li 2 O were used to replace CaF 2 in refining slag with the equivalent weight replacement method, and then the melting temperature and desulphurization capacity of slag were determined. The results show that the melting temperature of slag (CaF 2 < 4 mass% and Al 2 O 3 > 28 mass%) is less than 1,706 K, when CaF 2 is substituted by Al 2 O 3 . This slag is able to decrease [S] in steel to less than 0.0060 mass%. In the case of substitution of CaF 2 by SiO 2 , the melting temperature increases, while the desulphurization rate decreases. The fluxing action of B 2 O 3 is stronger than that of CaF 2 , and the melting temperature decreases to 1,561 K when CaF 2 is substituted by B 2 O 3 . Li 2 O can not only lower the melting temperature of slag but also improve the desulphurization rate.

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精炼渣成分对其熔炼性能和脱硫性能的影响

摘要为探讨低氟精炼渣的可行性，采用当量重量替代法，采用Al 2o3、sio2、b2o3、Li 2o等氧化物替代精炼渣中的ca2，测定了渣的熔融温度和脱硫能力。结果表明:矿渣(caf2 <4质量%和al2o3 >当caf2被al2o3取代时，其质量小于1,706 K。这种炉渣能使钢中的[S]降低到0.0060质量%以下。以sio2取代caf2时，熔点升高，脱硫速率降低。b2o3的助熔剂作用强于caf2，用b2o3代替caf2时，熔点降至1561 K。Li 2o不仅可以降低炉渣的熔化温度，还可以提高脱硫率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

High Temperature Materials and Processes 工程技术-材料科学：综合

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

3.9 months

期刊介绍： High Temperature Materials and Processes offers an international publication forum for new ideas, insights and results related to high-temperature materials and processes in science and technology. The journal publishes original research papers and short communications addressing topics at the forefront of high-temperature materials research including processing of various materials at high temperatures. Occasionally, reviews of a specific topic are included. The journal also publishes special issues featuring ongoing research programs as well as symposia of high-temperature materials and processes, and other related research activities. Emphasis is placed on the multi-disciplinary nature of high-temperature materials and processes for various materials in a variety of states. Such a nature of the journal will help readers who wish to become acquainted with related subjects by obtaining information of various aspects of high-temperature materials research. The increasing spread of information on these subjects will also help to shed light on relevant topics of high-temperature materials and processes outside of readers’ own core specialties.