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Pre-discarding by Heavy Medium Separation Plus Ambient Temperature Flotation for Scheelite Sample from Middle-Layer Mining Zone of a Tungsten Mine in Hunan Province
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Daijun YUAN1, Jiangxu GUO1, Zhifei ZENG2, Haitao ZENG1
Mining and Metallurgical Engineering | 2023, 43(1) : 59 - 62
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Mining and Metallurgical Engineering | 2023, 43(1): 59-62
• MINERAL PROCESSING •
Pre-discarding by Heavy Medium Separation Plus Ambient Temperature Flotation for Scheelite Sample from Middle-Layer Mining Zone of a Tungsten Mine in Hunan Province
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Daijun YUAN1, Jiangxu GUO1, Zhifei ZENG2, Haitao ZENG1
Affiliations
  • 1.Hunan Yaogangxian Mining Co Ltd, Chenzhou 423000, Hunan, China
  • 2.Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China
Published: 2023-02-01 doi: 10.3969/j.issn.0253-6099.2023.01.013
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A process consisting of pre-discarding with heavy medium separation and ambient-temperature flotation was adopted for a scheelite ore sampled from the middle-layer mining zone of a tungsten mine in Hunan Province. A heavy medium separation test with the ore size of -15+0.5 mm as the feeding show that in the heavy medium with the density of 2.37 g/cm3, 31.37% of yielded tailings can be discarded, while the obtained heavy product has WO3 grade and recovery increased to 0.34% and 96.62% respectively. A test by using a process of desulfurization flotation plus ambient temperature flotation for scheelite demonstrates that the process of pre-discarding with heavy medium has little effect on the operation loss rate of WO3 in sulfur-containing products. However, the raw ore is directly taken into the flotation without a pre-discarding will lead to more tungsten minerals left in the middlings. The closed-circuit test shows that after a pre-discarding by heavy medium separation, the tungsten concentrate from ambient-temperature flotation has its WO3 grade and recovery reaching 5.50% and 84.15% respectively. It is concluded that pre-discarding by using heavy medium cyclone is conducive to improvement of tungsten product index and comprehensive utilization of tailings.

tungsten ore  /  pre-discarding by heavy medium separation  /  ambient-temperature flotation  /  coarse tailings  /  scheelite  /  cyclone  /  tailings discarding
Daijun YUAN, Jiangxu GUO, Zhifei ZENG, Haitao ZENG. Pre-discarding by Heavy Medium Separation Plus Ambient Temperature Flotation for Scheelite Sample from Middle-Layer Mining Zone of a Tungsten Mine in Hunan Province[J]. Mining and Metallurgical Engineering, 2023 , 43 (1) : 59 -62 . DOI: 10.3969/j.issn.0253-6099.2023.01.013
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.01.013
  • Receive Date：2022-08-16
  • Online Date：2026-03-05
  • Published：2023-02-01
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  • Received：2022-08-16
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Affiliations
    1.Hunan Yaogangxian Mining Co Ltd, Chenzhou 423000, Hunan, China
    2.Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2023.01.013
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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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