Production and recycling of blast furnace slag: A life cycle assessment approach in India

IF 2.1 4区环境科学与生态学 Q3 ENGINEERING, CHEMICAL

Environmental Progress & Sustainable Energy Pub Date : 2024-10-20 DOI:10.1002/ep.14503

Rohit B. Meshram, Kanai L. Sahoo, Ganapati D. Yadav, Kumudini V. Marathe

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引用次数: 0

Abstract

This article investigated the cradle-to-gate environmental impact of granulated blast furnace slag (GBFS) produced in the steel industry and replacement of blast furnace (BF) slag (50%) in place of clinker in Portland slag cement using GaBi software (Indian extension database). In case of GBFS production, maximum burden on the environment is due to BF slag production and the amount of electricity consumed (161 MJ/ton) during the granulation process. The influence of electricity sources on GBFS production was studied via scenario analysis. For investigation, solar and thermal electricity mixes were considered in 50:50 and 75:25 ratios. For the 75:25 ratios, the abiotic depletion potential (fossil), acidification, eutrophication, global warming, and human toxicity potential show a decreasing trend of approximately 45%, 49%, 48%, 46%, and 41%, respectively. The scenario analysis of BF slag transportation (from 100 to 750 km) demonstrates a negative impact due to fuel. The results quantitatively confirm that the addition of GBFS can lower the overall impact for construction and steel industries.

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高炉矿渣的生产和回收利用：印度的生命周期评估方法

本文使用 GaBi 软件（印度扩展数据库）调查了钢铁行业生产的粒化高炉矿渣（GBFS）以及在波特兰矿渣水泥中用高炉矿渣（50%）替代熟料对环境的影响。在 GBFS 的生产中，对环境造成最大负担的是高炉矿渣的生产和粒化过程中的耗电量（161 兆焦耳/吨）。通过情景分析研究了电力来源对 GBFS 生产的影响。在调查中，考虑了太阳能和热能电力的混合比例为 50:50 和 75:25。在 75:25 的比例下，非生物损耗潜能值（化石）、酸化、富营养化、全球变暖和人类毒性潜能值分别呈现出约 45%、49%、48%、46% 和 41% 的下降趋势。对碱性炉渣运输（从 100 公里到 750 公里）的情景分析表明，燃料会产生负面影响。结果从数量上证实，添加 GBFS 可以降低对建筑和钢铁行业的整体影响。

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

Environmental Progress & Sustainable Energy 环境科学-工程：化工

CiteScore

5.00

自引率

3.60%

发文量

231

审稿时长

4.3 months

期刊介绍： Environmental Progress , a quarterly publication of the American Institute of Chemical Engineers, reports on critical issues like remediation and treatment of solid or aqueous wastes, air pollution, sustainability, and sustainable energy. Each issue helps chemical engineers (and those in related fields) stay on top of technological advances in all areas associated with the environment through feature articles, updates, book and software reviews, and editorials.