配煤结构与炼焦升温程序对焦炭质量的影响
Effects of coal blending structure and coking temperature rise program on coke quality
刘洋 1李东涛 1代鑫 1郭德英 1赵鹏1
作者信息
- 1. 首钢集团有限公司技术研究院,北京 100043;绿色可循环钢铁流程北京市重点试验室,北京 100043
- 折叠
摘要
在保持其他因素不变的情况下,将配煤结构和炼焦升温程序 2 个因素结合起来,设计了 3 组配煤与 3组炼焦升温程序组合的 9 个方案进行 40 kg 试验焦炉炼焦试验研究.结果表明:不同的配煤方案采用相同的升温程序,所得焦炭的冷强度、热强度、平均粒度及显微结构组成不同,配煤质量好时,所得的焦炭质量也更优;同一配煤方案采用不同的升温程序,所得焦炭的冷热强度、平均粒度及显微组成不同;按恒温 1 000℃炼焦,虽然所得焦炭的抗碎强度M40 和平均粒度较低,耐磨强度M10 变化不大,但其热强度好,各向异性组分含量较高;随着煤样炼焦升温速度的提高,所得焦炭的平均粒度呈降低趋势;此外,采用适宜的炼焦升温程序,即使配煤结构差些,也可以得到质量较好的焦炭.
Abstract
Coke quality is affected by many factors.Among them,coal blending structure and coking temperature rise program are important factors affecting coke quality.This paper expounds the cokemaking experiment by 40 kg pilot oven,including nine schemes with a combination of three types of coal blending and three coking temperature rise programs to analyze their influence on coke quality while keeping other factors steady.The experiment indicates that by adopting the same coking temperature rise program,different coal blending scheme causes the variation of coke quality in terms of cold and hot strength,average grain size,and microstructure.Better quality of coke is produced out of higher quality coal blending.By adopting the same coal blending scheme,different coking temperature rise program also causes the variation of coke quality in terms of cold and hot strength,average grain size,and microstructure.If the coking is at the constant temperature of 1 000℃,coke crushing strength M40 and average grain size will be less,coke abrasion resistance will vary only slightly while hot strength will be better.Content of anisotropic components will be higher.As the coking temperature rises more rapidly,average grain size of coke will drop.In addition,better quality of coke can be obtained by adopting appropriate coking temperature rise program even if coal blending structure is less qualified.
关键词
配煤结构/炼焦升温程序/焦炭质量/冷强度/热强度/显微结构Key words
Coal blending structure/Coking temperature rise program/Coke quality/Cold strength/Hot strength/Microstructure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据