改性黑药类捕收剂强化浮选玉龙铅锌矿中伴生银的无碱工艺研究OACSTPCD
Alkali-free Process for Enhancing the Flotation of Associated Silver in Yulong Lead-Zinc Ore with Modified Dithiophosphate-type Collector
针对玉龙铅锌矿浮选过程中伴生银矿物回收率不高等问题,进行了新型捕收剂下无碱铅银浮选工艺研究.研究结果表明,在磨矿细度为-74 μm占 65%时,抑制剂采用亚硫酸钠与硫酸锌,捕收剂采用改性黑药类捕收剂CY-1,可实现无碱条件下铅银精矿中银回收率的显著提升.闭路实验获得了含Pb 52.05%、Ag 4 866 g/t的铅银精矿,铅、银回收率分别为 91.76%和84.43%.与乙硫氮+丁铵黑药为组合捕收剂时的高碱工艺相比,铅、银回收率分别提高了 2.5 和 6 百分点.该工艺消除了浮选过程中石灰对银矿物的抑制,有助于强化铅锌矿伴生稀贵金属的综合回收,提升资源的综合利用效率.
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.
江锋;何帅;唐鸿鹄;吴永安;韩英杰;许世明
中南大学,湖南 长沙 410083内蒙古玉龙矿业有限公司,内蒙古 锡林浩特 026000
矿山工程
浮选铅锌矿伴生金属银无碱工艺捕收剂
flotationlead-zinc oreassociated metalsilveralkali-free processcollector
《矿产保护与利用》 2024 (001)
67-73 / 7
国家重点研发计划课题(2022YFC2904501,2022YFC2904502);湖南省自然科学基金项目(2023JJ20071);湖南省科技创新计划项目(2023RC3067)
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