Scholarlink

<p>The refractory composition prefers primary raw materials for a long campaign. The recent raw material crisis, quality depletion, abnormal price hikes, and global carbon footprint challenges stimulate the development of valuable refractories from waste to reduce the disposal problem and their utilization to protect the environment. Al<sub>2</sub>O<sub>3</sub>–SiC–C (ASC) shaped and unshaped refractories in the iron-making process are at the forefront due to the non-wetting character and high contact angle of carbon and SiC. While Al<sub>2</sub>O<sub>3</sub>–SiC–C (ASC) castable is a concern, the composition mix demands carbon addition, a critical task to achieve desired flowability and properties due to the non-wettability of graphite to water along with its easy oxidation tendency in the presence of air. In this backdrop, the research illustrates a new development of novel ASC castable through 40&#xa0;wt.% ASC brick waste utilization that eventually exhibits desired flowability and competitive properties compared to prime raw material-based ASC castables. In addition, the exothermic profile, hardening behavior, mechanical strength, microstructure, thermal shock, and corrosion behavior are discussed to understand the benefit of waste utilization and carbon footprint reduction (~ 19%) in this new class of castables.</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

Al2O3–SiC–C castable for high performance and lower carbon footprint

  • 期刊论文

  • 发表日期：

    2025年7月19日

查看全文
  • Rajeswar Pramanik,
  • Ujjwal Sengupta,
  • Debasish Sarkar

摘要

The refractory composition prefers primary raw materials for a long campaign. The recent raw material crisis, quality depletion, abnormal price hikes, and global carbon footprint challenges stimulate the development of valuable refractories from waste to reduce the disposal problem and their utilization to protect the environment. Al2O3–SiC–C (ASC) shaped and unshaped refractories in the iron-making process are at the forefront due to the non-wetting character and high contact angle of carbon and SiC. While Al2O3–SiC–C (ASC) castable is a concern, the composition mix demands carbon addition, a critical task to achieve desired flowability and properties due to the non-wettability of graphite to water along with its easy oxidation tendency in the presence of air. In this backdrop, the research illustrates a new development of novel ASC castable through 40 wt.% ASC brick waste utilization that eventually exhibits desired flowability and competitive properties compared to prime raw material-based ASC castables. In addition, the exothermic profile, hardening behavior, mechanical strength, microstructure, thermal shock, and corrosion behavior are discussed to understand the benefit of waste utilization and carbon footprint reduction (~ 19%) in this new class of castables.