Pilot scale simulation of cokemaking in integrated steelworks

Mahoney, Merrick R.; Andriopoulos, Nick; Keating, Jack; Loo, C. E.; McGuire, Sid

doi:10.1179/174328105x48098

Cited by 27 publications

(17 citation statements)

References 1 publication

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“…Four of the pilot oven cokes were formed from single coals, and the other was formed from a 50:50 binary blend of two of the single coals. These cokes were produced in two separate pilot coke ovens, the conditions for which can be found in ref 14. The main difference between the two pilot-scale ovens was their size.…”

Section: Methodsmentioning

confidence: 99%

Tribological Testing of Metallurgical Coke: Coefficient of Friction and Relation to Coal Properties

et al. 2018

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Tribological testing and analysis of metallurgical-grade cokes were conducted to elucidate the nature of the surface of each coke and the influence of the surface on coke abrasion resistance. The coefficient of friction (COF) was contrasted between cokes of different coal origins. The results indicate that the COF increases with (i) parent coal vitrinite content and (ii) decreasing rank of the parent coal. The amount of ultrafine (i.e., <10 μm at the longest dimension) material produced by coke during continuous rotational tribological testing increased as the rank of the parent coal increased. Above a parent coal mean maximum vitrinite reflectance of 1.37%, the COF began to decrease slightly beyond the first 40–60 s of testing, which can be attributed to the anisotropic, graphitic ultrafines acting as a surface modifier or lubricant. This has implications for the abrasion resistance of coke under blast furnace conditions, in which graphitic ultrafines acting a lubricant would likely reduce the degradation rate of the coke. For the pilot oven coke from the blend examined, the COF at all stages of the experiment was approximately linear with blend composition. The exploratory study described in this paper indicates that the wear characteristics of inertinite maceral derived constituents (IMDC) and reactive maceral derived constituents (RMDC) are different and that the wear behavior of the RMDC is rank dependent, while that of the IMDC is less sensitive to the rank of the initial coal.

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Section: Methodsmentioning

confidence: 99%

Tribological Testing of Metallurgical Coke: Coefficient of Friction and Relation to Coal Properties

et al. 2018

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“…The cokes were prepared in two pilot coke ovens using similar operating conditions [19] which simulated commercial coking conditions. The coal grind for both cokes was~85% passing 3.35 mm.…”

Section: Sample Preparationmentioning

confidence: 99%

Examining mechanisms of metallurgical coke fracture using micro-CT imaging and analysis

Lomas

Jenkins

Mahoney

et al. 2017

Fuel Processing Technology

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“…Cokes were prepared in two separate pilot coke ovens under the same conditions (see Table 2). 16 2.3. Preparation of Polished Coke Blocks.…”

Section: Coke Preparationmentioning

confidence: 99%

Tribological Approach to Investigate the Interface Properties in Metallurgical Coke

et al. 2017

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Metallurgical coke is a brittle composite material comprising predominantly carbon derived from both reactive and inertinite coal macerals. During cokemaking, these macerals form the porous coke matrix. The interfaces between the distinct maceral derived components, known as textures in the final coke structure, are well-known to be a major source of weakness in some metallurgical cokes. In this paper, we present a novel approach which applies techniques used in tribology to investigate the strength of the interfaces as well as the wear properties of the different textural constituents in metallurgical coke, at room temperature. The wear mechanisms which occur in coke were investigated using three pilot oven cokes of different single coal origin. A range of high resolution analytical techniques, including coke petrography, optical microscopy, stereo microscopy, and scanning electron microscopy, were used to determine the wear modes. The technique has also proven to be an effective method to determine the relative strength of inerts and RMDC as well as the strength of the interface between these two textures, based on their susceptibility to different wear mechanisms. Further work is focused toward being able to predict the wear properties and relative strength of the inerts in a particular coke from their properties in the original coal(s).

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Pilot scale simulation of cokemaking in integrated steelworks

Cited by 27 publications

References 1 publication

Tribological Testing of Metallurgical Coke: Coefficient of Friction and Relation to Coal Properties

Tribological Testing of Metallurgical Coke: Coefficient of Friction and Relation to Coal Properties

Examining mechanisms of metallurgical coke fracture using micro-CT imaging and analysis

Tribological Approach to Investigate the Interface Properties in Metallurgical Coke

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