Heat-transfer considerations in the bath smelting of composite organic and ferrous wastes

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Title: Heat-transfer considerations in the bath smelting of composite organic and ferrous wastes
Author(s): Streets, S. J.; Brooks, Geoffrey; Subagyo
Abstract: Prediction of the heating behaviour of composite pellets smelted in single-vessel bath smelting reactors is complicated by simultaneous multiple reactions within the pellets and a lack of knowledge of relevant heat-transfer data. Limited heat-transfer analysis has been performed for the smelting of composite organic and ferrous wastes. The smelting process was modelled in two stages---a falling-pellet-gas region and an in-slag smelting region. The temperature profile generated within the composite pellet in the falling-pellet–gas region was determined by use of an exact solution for transient heating and a computer program was written to solve two-phase, moving-boundary, heat-transfer equations to determine the smelting time in the in-slag smelting region. Modelling established that significant volumes of the composite pellet are heated to reaction temperatures in the falling-pellet–gas region and that formation of a slag immersion crust is unlikely. Smelting times predicted by the heat-transfer model were validated experimentally.
Publication type: Journal article
Source: Institution of Mining and Metallurgy Transactions: Section C: Mineral Processing and Extractive Metallurgy, Vol. 111, no. 1 (Apr 2002), pp. 18-24
Publication year: 2002
Keyword(s): Bath smelting; Ferrous wastes; Heat transfer; Organic wastes
Publisher: Maney Publishing
ISSN: 0371-9553
Publisher URL: http://maney.co.uk/index.php/journals/mpm/
Peer reviewed