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| Process of Dust Generation in Copper Flash Smelting |
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Received:October 10, 2019
Revised:October 28, 2019
Accepted:October 29, 2019
Published Online:January 16, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.02.001 |
| KeyWord:copper metallurgy; flash furnace; flash smelting; process mechanism; dust |
| Author | Institution |
| ZHOU Jun |
铜陵有色金属集团控股有限公司 |
| CHEN Zhuo |
中南大学能源与动力学院 |
| ZHOU Jiemin |
中南大学能源与动力学院 |
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| Abstract: |
| Dust samples taken online from a commercial flash smelting furnace in its normal operation and from locations on its gas line were analyzed. Dust morphology and particle size variation, and dust generation conditions are investigated. It is found that, dust is not the un-reacted fine concentrate particles from reaction shaft, but is over-oxidized fine molten ball particle not falling into the settler from the shaft. Silica and converting slag particles are hard to be converted to dust. Reaction shaft height has a big effect on dust generation, and higher shaft is beneficial to lower dust generation. Process mechanism of dust generation in a commercial flash smelting furnace is proposed. |
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