Alkali−free Process for Enhancing the Flotation of Associated Silver in Yulong Lead−Zinc Ore with Modified Dithiophosphate−type Collector

JIANG Feng; HE Shuai; TANG Honghu; WU Yongan; HAN Yingjie; XU Shiming

doi:10.13779/j.cnki.issn1001-0076.2024.01.009

2024 Vol. 44, No. 1

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JIANG Feng, HE Shuai, TANG Honghu, WU Yongan, HAN Yingjie, XU Shiming. Alkali−free Process for Enhancing the Flotation of Associated Silver in Yulong Lead−Zinc Ore with Modified Dithiophosphate−type Collector[J]. Conservation and Utilization of Mineral Resources, 2024, 44(1): 67-73. doi: 10.13779/j.cnki.issn1001-0076.2024.01.009

Citation:

JIANG Feng, HE Shuai, TANG Honghu, WU Yongan, HAN Yingjie, XU Shiming. Alkali−free Process for Enhancing the Flotation of Associated Silver in Yulong Lead−Zinc Ore with Modified Dithiophosphate−type Collector[J]. Conservation and Utilization of Mineral Resources, 2024, 44(1): 67-73. doi: 10.13779/j.cnki.issn1001-0076.2024.01.009

Alkali−free Process for Enhancing the Flotation of Associated Silver in Yulong Lead−Zinc Ore with Modified Dithiophosphate−type Collector

1.
Central South University, Changsha 410083, Hunan, China
2.
Inner Mongolia Yulong Mining Co., LTD, Xilinhot 026000, Inner Mongolia, China

More Information

Corresponding author: WU Yongan, wuyongan@ytg000975.cn

Received Date: 01 December 2023

Publish Date: 15 February 2024

Abstract

Abstract

Aiming at the low recovery of associated silver minerals during the flotation process of Yulong lead−zinc ore, a study on an alkali−free lead−silver flotation process with a novel collector was conducted. The research results indicated that, at a grinding fineness of −74 μm accounting for 65%, using sodium sulfite and zinc sulfate as depressants, and adopting the modified dithiophosphate−type collector CY−1, significantly enhanced the silver recovery in lead−silver concentrate under alkali−free conditions. Closed−circuit experiment of this process obtained the lead−silver concentrate with a lead grade of 52.05% and a silver grade of 4 866 g/t. The recovery rates for lead and silver were 91.76% and 84.43%, respectively. Compared to the high−alkali process using sodium diethyldithiocarbamate and ammonium dibutyl dithiophosphate as collectors, the lead and silver recovery rates increased by 2.5 and 6 percentage points, respectively. This process eliminates the depression of lime on silver minerals during the flotation process, contributing to the comprehensive recovery of rare precious metals associated with lead−zinc ore and enhancing the overall resource utilization efficiency.
- flotation /
- lead−zinc ore /
- associated metal /
- silver /
- alkali−free process /
- collector

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References

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