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Conference Proceedings

Research and Development in Extractive Metallurgy, Adelaide

Conference Proceedings

Research and Development in Extractive Metallurgy, Adelaide

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Ignition of Elura Lead Concentrate Under Flash Drying Conditions

The tendency of the concentrate to ignite was studied using four techniques, namely, laminar flow furnace, fluid bed, thermal analysis and boat-in-furnace. Exothermic activity occurred at two temperatures: minor activity in the vicinity of 200C, major activity at 330-350C. The low temperature reaction was due to the ignition of a small amount of free sulphur while the major activity was associated with the ignition of the sulphide minerals, notably pyrite. To avoid ignition of the sulphide minerals, the gas temperature should not exceed 300C and the oxygen content of the gas phase should be as low as possible. It was shown that little of the arsenic in the concentrate entered the gas phase during drying.
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  • Ignition of Elura Lead Concentrate Under Flash Drying Conditions
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  • Published: 1987
  • PDF Size: 0.709 Mb.
  • Unique ID: P198704013

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