Microtextural analysis of coke from single and binary blend and its impact on coke quality. (14th September 2018)

• Record Type: Journal Article
• Authors: Singh, Rashmi; Ghosh, Tamal Kanti; Nag, Debjani
• Is Part Of: Ironmaking & steelmaking. Volume 45:Number 8(2018)
• Page Start: 727
• Page End: 738
• Publication Date: 2018-09-14
• Subjects: Coal petrography -- coke microtexture and microstructure -- CSR -- CRI; Iron industry and trade -- Periodicals; Steel industry and trade -- Periodicals; 669.1
• DOI: 10.1080/03019233.2017.1328870
• Languages: English
• ISSNs: 0301-9233

Abstract

ABSTRACT: Coke microtexture and microstructure is a function of feed coal composition and carbonisation process. If the process remains constant, the composition plays a vital role in developing the microtexture and microstructure which also reflects the coke quality. Knowledge of the influence of coal composition and characteristics on coke quality is a must for formulating a coal blend for coke making. To better understand how the coal transforms into coke requires the ability to correlate the microtextural and microstructural features to coal properties. Petrography is an important tool for comparing the feed coal and corresponding coke. In the present study, cokes manufactured from single coals and two-component blends under similar coking conditions were studied under the microscope to provide valuable information to coke makers. Not only the rank and quantification of macerals but also the association of macerals and minerals play an important role. Also the size and type of inertinite affect the coke quality. Micro-cracking, crack lengths and fissures identify the zone of weakness, whereas microtexture of cell walls suggests the strength-controlling parameters of coke. Pictorial concept followed in the present study is given below: GRAPHICAL ABSTRACT: