Scholarlink

<p>The impetus for this study and proposal is the urgency for the steel industry to accelerate CO<sub>2</sub> emissions reduction during the critical decade to 2035. The new low-emissions processes being developed have long lead times and will not be able to take up the load significantly for many years. Therefore, it is imperative that means for significant net-CO<sub>2</sub> emissions reduction are found that use current assets and current knowledge with rapid and widespread implementation. Since the BF–BOF steelmaking route produces around 75% of world steel, the BF becomes central to any effective strategy. With this in mind, the Feed-Flexible Blast Furnace (FFBF) concept has been proposed and will feature alternate top feeds and tuyere injectants. The FFBF strategy will employ a mix of the six preferred applications illustrated in the graphical abstract to match the configuration and economics of each plant. Two reserve applications have also been identified. The applications feature metallurgical biochars, pre-reduced feeds, cold-bonded ores and/or ore/biochar composites. Conservatively based on existing plant operations, long-term trials or credible research, the potential total reduction in emissions for the six applications could reach 48.5% or 1.08&#xa0;t&#xa0;net-CO<sub>2</sub>/t&#xa0;HM if simultaneously usable at maximum rates. A heuristic “plan, test and measure” approach to implementation has been recommended using progressive incremental increases in feed rates to determine the optimum feed rate combination of the applications whilst ensuring process safety.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A Feed-Flexible Blast Furnace Strategy to Place the Steel Industry on an Accelerated Path Toward Net-Zero CO2 Emissions

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月13日

查看全文
  • John G. Mathieson,
  • Joe Herbertson AM

摘要

The impetus for this study and proposal is the urgency for the steel industry to accelerate CO2 emissions reduction during the critical decade to 2035. The new low-emissions processes being developed have long lead times and will not be able to take up the load significantly for many years. Therefore, it is imperative that means for significant net-CO2 emissions reduction are found that use current assets and current knowledge with rapid and widespread implementation. Since the BF–BOF steelmaking route produces around 75% of world steel, the BF becomes central to any effective strategy. With this in mind, the Feed-Flexible Blast Furnace (FFBF) concept has been proposed and will feature alternate top feeds and tuyere injectants. The FFBF strategy will employ a mix of the six preferred applications illustrated in the graphical abstract to match the configuration and economics of each plant. Two reserve applications have also been identified. The applications feature metallurgical biochars, pre-reduced feeds, cold-bonded ores and/or ore/biochar composites. Conservatively based on existing plant operations, long-term trials or credible research, the potential total reduction in emissions for the six applications could reach 48.5% or 1.08 t net-CO2/t HM if simultaneously usable at maximum rates. A heuristic “plan, test and measure” approach to implementation has been recommended using progressive incremental increases in feed rates to determine the optimum feed rate combination of the applications whilst ensuring process safety.

Graphical Abstract