低炭素製鋼におけるクロム挙動のレビュー
A Review of Chromium Behavior in Low‑Carbon Steelmaking (原題)
Roberta Botinha, Frank N. H. Schrama, Inge Bellemans, María J. Santofimia, Neslihan Dogan
🤖 gxceed AI 要約
日本語
鉄鋼業の脱炭素化と循環性向上に伴い、スクラップ利用が増加する中で、低炭素製鋼におけるクロムの挙動を包括的にレビュー。熱力学、スラグ構造、速度論の観点からクロム分布のメカニズムを統合し、スラグ中のクロム保持容量の概念を提案。不純物管理と持続可能な操業への示唆を与える。
English
As the steel industry decarbonizes and increases circularity, scrap use rises, making chromium control in low-carbon steelmaking challenging. This review synthesizes thermodynamics, slag structure, and kinetics to explain chromium distribution and proposes a chromium retention capacity concept for slags, aiding impurity management and sustainable operations.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の鉄鋼業はカーボンニュートラル目標に向け、スクラップ利用拡大が不可欠。本レビューは、スクラップ品質低下に伴うクロム管理の課題を整理し、スラグの有効利用や環境規制対応に資する知見を提供する。
In the global GX context
Global steel decarbonization drives scrap usage, but tramp elements like chromium complicate recycling. This review provides mechanistic insights into chromium behavior, supporting sustainable steelmaking and slag valorization, relevant for circular economy and climate goals.
👥 読者別の含意
🔬研究者:クロムの熱力学・速度論の統合的理解と、スラグ保持容量の概念を提供。
🏢実務担当者:スクラップ利用時のクロム管理とスラグの環境安全性向上に活用可能。
🏛政策担当者:鉄鋼リサイクル促進政策やスラグの環境基準策定に示唆を与える。
📄 Abstract（原文）
Abstract The steel industry is transitioning toward decarbonization and increased circularity, driving a growing dependence on scrap. However, limited availability of high-quality scrap forces producers to use more mixed or lower grade scrap streams, increasing variability in tramp element content—especially chromium. As a result, maintaining controlled chromium levels in liquid steel has become challenging. Chromium behavior during steelmaking is governed by a complex interplay of thermodynamics and mass transfer processes. Yet much of the mechanistic understanding of chromium distribution derives from high alloy and stainless steelmaking systems, where slag chemistries and oxygen potentials differ markedly from low carbon steel production, making direct transfer of knowledge challenging and often nontrivial. In parallel with controlling chromium in steel, the oxidation of chromium into the slag introduces additional sustainability concerns, since Cr-bearing slags may limit future slag applications unless chromium is effectively immobilized, increasing resistance to form environmentally harmful Cr 6+ species. This critical literature review synthesizes current knowledge on chromium distribution in the blast-furnace–basic-oxygen-furnace (BF–BOF) route, examining the thermodynamics of chromium oxidation, the influence of Cr 2+ /Cr 3+ on slag-network formation and oxide activities, the stability of Cr-containing phases, and the kinetics of chromium transfer at the metal–slag interface and within the slag phase. By integrating these thermodynamic, structural, and kinetic perspectives, the review identifies the mechanisms controlling chromium behavior and highlights key research needs, defining a chromium retention capacity concept for slags to support improved impurity management and more sustainable process operation.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1007/s40831-026-01609-6first seen 2026-08-26 04:37:27
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