优化本土高灰煤的使用,以实现可持续的粉碎煤注入和高效的能源转移
Amit Karmakar1,2, P Gopinathan3,4, T Subramani5
1Resource Quality Assessment Division, CSIR-Central Institute of Mining and Fuel Research, Dhanbad, 828108, Jharkhand, India.
Scientific reports
|November 17, 2025
概括
高灰炭的受益使得灰含量显著降低,使其适合用于钢铁生产中的粉末化煤炭注入 (PCI). 这一过程提高了国内资源利用率,并减少了对进口煤炭的依赖.
科学领域:
- 煤炭科学与技术 煤炭科学与技术
- 材料科学是一种材料科学.
- 化学工程是化学工程的组成部分.
背景情况:
- 本土高灰煤需要优化,以便在钢铁制造中的粉煤注入 (PCI) 中有效使用.
- 优化煤炭性能对于满足PCI应用的严格要求和减少对进口煤炭的依赖至关重要.
研究的目的:
- 调查基于大小和密度的优化对高灰煤性质对PCI适用性的影响.
- 评估受惠煤的利用潜力,包括混合战略,以实现经济高效的钢铁生产.
主要方法:
- 粗煤的密度分离成从1.3到1.8公斤/米3不等的部分.
- 对受益煤的综合性分析:近期,终极,热量,岩石图,膨胀指数和热量分析 (DSC-TGA-DTG).
- 将受惠煤与进口低灰煤混合,以满足PCI规格.
主要成果:
- 密度小于1.44公斤/立方米的碎片显示灰的显著减少,平均为16.23%,回收率为32.58%
- 受益的煤 (<1.44公斤/立方米) 呈现出最佳的挥发物质 (21.62%),固定碳 (>61.46%),高维特里尼特含量 (62.4-77.8%) 和低硫 (<0.42%).
- 总热量 (GCV) 在6642-8355 kcal/kg之间,热分析证实与进口PCI煤相兼容;混合煤达到9.59%的灰含量.
结论:
- 基于密度的优化在从高灰本土资源中生产合适的PCI煤炭方面是有效的.
- 受益煤和混合煤的燃烧概况与进口PCI煤相比较,证实了其可行性.
- 这种方法通过提高国内资源利用率,减少对进口的依赖,并促进具有成本效益的钢铁生产,提供了战略优势.
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