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Separation and Recovering of Aluminum, Silicon and Iron from Accumulative High-Iron Bauxite in Yunnan
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Lin YANG1, 2, 3, Jinxian ZHANG4, Saiqiong KAN1, 3, Chao LÜ1, 3
Mining and Metallurgical Engineering | 2023, 43(3) : 75 - 78
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Mining and Metallurgical Engineering | 2023, 43(3): 75-78
• MINERAL PROCESSING •
Separation and Recovering of Aluminum, Silicon and Iron from Accumulative High-Iron Bauxite in Yunnan
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Lin YANG1, 2, 3, Jinxian ZHANG4, Saiqiong KAN1, 3, Chao LÜ1, 3
Affiliations
  • 1.Kunming Metallurgical Research Institute Co Ltd, Kunming 650031, Yunnan, China
  • 2.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
  • 3.Yunnan Key Laboratory for New Technology of Beneficiation and Metallurgy, Kunming 650031, Yunnan, China
  • 4.Kunming Engineering & Research Institute of Nonferrous Metallurgy Co Ltd, Kunming 653030, Yunnan, China
Published: 2023-06-01 doi: 10.3969/j.issn.0253-6099.2023.03.017
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An accumulative bauxite ore in Yunnan containing 42.13% Al2O3, 15.73% SiO2 and 17.44% TFe, namely, with an Al/Si ratio of 2.68, was taken in a flotation for Al/Si separation, and the effects of pH regulator dosage, type and dosage of depressant, collector dosage and grinding fineness on desilication performance of flotation were all investigated. A closed-circuit flotation test performed with the optimized parameters produced an aluminum concentrate with Al2O3 grade and recovery of 52.16% and 70.30%, Al/Si ratio of 7.69, and TFe grade of 20.89%, respectively. Then, a flowsheet consisting of magnetic roasting and magnetic separation was introduced to treat this aluminum concentrate for Al/Fe separation, which produced a final aluminum concentrate containing 69.34% Al2O3 with Al/Si ratio of 8.70, and a rough iron concentrate grading 52.34% TFe with a process recovery of 76.03%.

high-iron bauxite  /  flotation  /  Al/Si ratio  /  aluminum concentrate  /  magnetic roasting  /  magnetic separation  /  desilication  /  Al/Fe separation
Lin YANG, Jinxian ZHANG, Saiqiong KAN, Chao LÜ. Separation and Recovering of Aluminum, Silicon and Iron from Accumulative High-Iron Bauxite in Yunnan[J]. Mining and Metallurgical Engineering, 2023 , 43 (3) : 75 -78 . DOI: 10.3969/j.issn.0253-6099.2023.03.017
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Year 2023 volume 43 Issue 3
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doi: 10.3969/j.issn.0253-6099.2023.03.017
  • Receive Date：2022-12-01
  • Online Date：2026-03-05
  • Published：2023-06-01
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  • Received：2022-12-01
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Affiliations
    1.Kunming Metallurgical Research Institute Co Ltd, Kunming 650031, Yunnan, China
    2.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
    3.Yunnan Key Laboratory for New Technology of Beneficiation and Metallurgy, Kunming 650031, Yunnan, China
    4.Kunming Engineering & Research Institute of Nonferrous Metallurgy Co Ltd, Kunming 653030, Yunnan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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