Quantitative Measurement of Powder Holdups in the Packed Beds

Gupta, GS and Lakshminarasimha, S and Shrenik, M (2022) Quantitative Measurement of Powder Holdups in the Packed Beds. In: Transactions of the Indian Institute of Metals, 75 (2). pp. 381-395.

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Abstract

Pulverized coal injection is widely used for the sustainability of ironmaking blast furnace process. However, the quantification of unburnt pulverized coal in the blast furnace is not well understood. The gas-powder flow in a packed bed in the raceway presence is studied using a two-dimensional cold model to understand the static and dynamic holdups of powder. Due to the lack of clarity in the existing literature about the procedures for estimating the powder holdups, it is proposed in the present work that the steady state and dynamic holdup can be quantified based on the mass balance concept and elutriation velocity, respectively, to get reproducible results. The application of these concepts across both rectangular and cylindrical geometries helped to validate and reproduce the results. The different parameters, such as powder flux, powder size, and gas flowrate, helped to evaluate the powder holdups in the blast furnace�s cold model with the raceway presence. © 2021, The Indian Institute of Metals - IIM.

Item Type:	Journal Article
Publication:	Transactions of the Indian Institute of Metals
Publisher:	Springer
Additional Information:	The copyright for this article belongs to Springer
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	28 Nov 2021 06:24
Last Modified:	02 Nov 2022 03:30
URI:	https://eprints.iisc.ac.in/id/eprint/70446

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