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Preparation of High-grade Germanium Concentrate by Acid Pickling of Tannic Germanium Residue
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Weiqin FU1, Houwen ZHANG2, Junchang LIU1, Yanlin LI2, Xingbing MU1, Dajin YANG2, Hongmei ZHAO2, Ruixiao YANG1, Kun WANG1, Zishen QIAO1
Hydrometallurgy of China | 2024, 43(5) : 538 - 542
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Hydrometallurgy of China | 2024, 43(5): 538-542
• Experiment Research •
Preparation of High-grade Germanium Concentrate by Acid Pickling of Tannic Germanium Residue
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Weiqin FU1, Houwen ZHANG2, Junchang LIU1, Yanlin LI2, Xingbing MU1, Dajin YANG2, Hongmei ZHAO2, Ruixiao YANG1, Kun WANG1, Zishen QIAO1
Affiliations
  • 1 Kunming Metallurgical Research Institute Co., Ltd., Kunming 650503, China
  • 2 Yunnan Chihong Zinc & Germanium Co., Ltd., Qujing 655011, China
Published: 2024-10-20 doi: 10.13355/j.cnki.sfyj.2024.05.009
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In view of the problems of low impurity removal rate and low grade of germanium concentrate in the washing process of tannin germanium residue, the As, Zn and Fe impurities in tannin germanium residue were effectively removed by washing with dilute sulfuric acid solution. The effects of sulfuric acid mass concentration, washing temperature and washing time, liquid volume to solid mass ratio on the removal rate of As, Zn and Fe impurities and Ge loss rate were investigated. The results show that under the conditions of sulfuric acid mass concentration of 60 g/L, liquid volume to solid mass ratio of 5 mL/1 g, washing temperature of 60 ℃,first washing time of 120 min, second washing and third washing time of 60 min, the cumulative removal rates of As, Zn and Fe can reach over 88%, 97% and 95%, respectively. Ge cumulative loss rate is less than 1.50%. The Ge and As grades of germanium concentrate prepared by three-stage countercurrent pickling and oxidation roasting process are 34.45% and 0.54%, respectively, which meet the tertiary standard of germanium concentrate.

tannic germanium residue  /  acid picking  /  arsenic  /  iron  /  zinc  /  germanium  /  germanium concentrate
Weiqin FU, Houwen ZHANG, Junchang LIU, Yanlin LI, Xingbing MU, Dajin YANG, Hongmei ZHAO, Ruixiao YANG, Kun WANG, Zishen QIAO. Preparation of High-grade Germanium Concentrate by Acid Pickling of Tannic Germanium Residue[J]. Hydrometallurgy of China, 2024 , 43 (5) : 538 -542 . DOI: 10.13355/j.cnki.sfyj.2024.05.009
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Year 2024 volume 43 Issue 5
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doi: 10.13355/j.cnki.sfyj.2024.05.009
  • Receive Date：2024-05-28
  • Online Date：2025-09-10
  • Published：2024-10-20
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  • Received：2024-05-28
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    1 Kunming Metallurgical Research Institute Co., Ltd., Kunming 650503, China
    2 Yunnan Chihong Zinc & Germanium Co., Ltd., Qujing 655011, 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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