Sintering and ferrite formation during high temperature roasting of sulfide concentrates

Shu, Jun; Lakshmanan, V. I.; Convey, J.

doi:10.1016/s0008-4433(99)00010-5

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…No significant liquid phases were identified from FactSage calculations for the analyses in Table 6 at 800-1200uC. However, the analyses at least show that lead is not present in the molten phase and the molten phase compositions are in agreement with previous work (Shu et al, 1999). In fact, no Pb was analysed in sample 3, indicating that most of the Pb was volatilised.…”

Section: Product Samplessupporting

confidence: 78%

“…6 and 7. This phenomenon of hexagonal zincite crystals covered by a molten phase has been identified before (Shu et al, 1999). The zinc concentrate was partially roasted in a laboratory experiment at 1100uC for 5 min.…”

Section: Product Samplesmentioning

confidence: 54%

“…Sinter formation in zinc concentrate reacted at 1100uC, in laboratory experiments to simulate roasting, is caused by formation of a liquid phase of Zn-S-O composition (Shu et al, 1999).…”

Section: Previous Studiesmentioning

confidence: 99%

See 2 more Smart Citations

Sinter formation in zinc roasting

Coetsee¹,

Naudé²,

Richards³

et al. 2013

Mineral Processing and Extractive Metallurgy

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Excessive sinter formation in zinc roasters leads to defluidisation of the bed so that production time is lost in clearing the collapsed bed from the roaster in preparation for restart of the roaster process. At Exxaro's Zincor plant the roaster feed concentrate consisted of a blend of Rosh Pinah, Black mountain and an import concentrate. The possible formation of unwanted sinter material was investigated by thermochemical simulation of the roaster process using FactSage software. The mineralogical composition of the individual feed concentrate streams was quantified by QemScan analyses. This mineralogical analysis was simplified and then used as input into the FactSage simulation calculations. The thermochemical simulation results were used to aid in the process interpretation of mineralogical analyses of samples from a failed bed, as compared to an acceptable roaster product sample.

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Section: Product Samplessupporting

confidence: 78%

Section: Product Samplesmentioning

confidence: 54%