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  

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

作　　者：江锋[1] 何帅[1] 唐鸿鹄[1] 吴永安 韩英杰 许世明 JIANG Feng;HE Shuai;TANG Honghu;WU Yongan;HAN Yingjie;XU Shiming(Central South University,Changsha 410083,Hunan,China;Inner Mongolia Yulong Mining Co.,LTD,Xilinhot 026000,Inner Mongolia,China)

机构地区：[1]中南大学,湖南长沙410083 [2]内蒙古玉龙矿业有限公司,内蒙古锡林浩特026000

出　　处：《矿产保护与利用》2024年第1期67-73,共7页Conservation and Utilization of Mineral Resources

基　　金：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)。

摘　　要：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-74μm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-74μm 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 4866 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.

关 键 词：浮选 铅锌矿 伴生金属 银 无碱工艺 捕收剂 

分 类 号：TD952.2[矿业工程—选矿]