燃料与化工 ›› 2023, Vol. 54 ›› Issue (3): 10-14.

• 综述与专论 • 上一篇    下一篇

北美焦煤和肥煤的配煤炼焦研究与实践

  

  1. (1. 中信特钢铜陵泰富特种材料有限公司,铜陵 244100; 2. 中钢集团鞍山热能研究院有限公司,鞍山 114044)
  • 出版日期:2023-05-23 发布日期:2023-06-06

Study and practice of blending coking coal and fat coal from North America

  1. (1. Tongling Pacific Special Materials Co.,Ltd.,Tongling 244100,China; 2. Sinosteel Anshan Research Institute of Thermo-Energy Co.,Ltd.,Anshan 114044,China
  • Online:2023-05-23 Published:2023-06-06

摘要: 为缓解低灰、低硫焦煤与肥煤资源紧张现状,稳定焦炭生产,公司引进了北美焦煤与肥煤。通过开展 单种煤煤质与炼焦特性、配煤炼焦试验研究,分析了配合煤煤质与焦炭质量的相关性关系。结果表明:北美焦 煤与肥煤具有低灰、低硫的优质特性,但其热性质相对国内同类煤种差,其参与的配煤结构中配合煤的挥发分、 黏结指数及灰成分指标,均与焦炭的机械强度、热性质具有较高的线性拟合度,均大于 0.80。通过优化配煤结构, 在 7 m 顶装焦炉中应用北美焦煤或肥煤的比例可达 8% ~ 12%,并可稳定生产出 CSR 约为 67.5% 与 CSR 约 为 70% 的合格焦炭

关键词: 北美焦煤与肥煤, 配煤炼焦, 线性拟合, 焦炭质量

Abstract:  In order to alleviate the shortage of low-ash and low-sulfur coking coal and fat coal resources and stabilize the production of coke,our company introduced coking coal and fat coal from North America,carried out studies on individual kind of coal quality related to cokemaking characteristics, coal blending test,and analyzed correlation between blended coal quality and coke quality. The study results show that North American coking coal and fat coal are characterized with high quality behaviors,such as low ash and low sulfur,but with worse thermal properties(CRI & CSR)than those of similar coals in China. The indicators of volatile,caking index and ash contents of blended coal in the coal blending composition have a high linear fitting degree about 0.80 with the mechanical strength and thermal properties of coke. After coal blending optimization,8%~12% of North American coking coal or fat coal can be used in 7 m top-charge battery,and qualified coke with CSR~67.5% and~70% can be produced stably

Key words: Coking coal and fat coal from North America, Coal blending for cokemaking, Linear fitting, Coke quality

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