摘要
内蒙古某低品位硫化铅锌矿石中Pb品位为0.90%、Zn品位为3.23%,主要目的矿物方铅矿和闪锌矿主要呈浸染状分布于脉石矿物中,且存在相互包裹的现象,脉石矿物主要为钙铁辉石、方解石、绿帘石、钙铝榴石和石英等。基于工艺矿物学和条件试验研究结果,确定了“优先选铅-铅尾选锌”的浮选工艺流程。通过闭路试验,最终可获得Pb品位为66.83%、回收率为85.42%的合格铅精矿,Zn品位为53.26%、回收率为91.53%的合格锌精矿。相较于选厂的浮选流程,新流程采用了选择性较好的新型捕收剂8230和活化剂X-46,石灰用量由原来的12.56 kg/t降至4 kg/t,有效缓解了石灰大量使用带来的管道堵塞问题及其对尾水处理的不利影响。
In a low-grade sulfide lead-zinc ore from Inner Mongolia,the lead(Pb)grade is 0.90%,and the zinc(Zn)grade is 3.23%.The primary target minerals,galena and sphalerite,are predominantly disseminated within gangue minerals in a impregnated state,exhibiting mutual encapsulation phenomena.The vein minerals are mainly calcium iron pyroxene,calcite,epidote,calcium aluminum garnet,and quartz.Based on the results of process mineralogy and conditional experimental research,the flotation process flow of"prioritizing lead-lead tailings selection for zin"had been determined.Through closed circuit test,qualified lead concentrate with a Pb grade of 66.83%and a recovery rate of 85.42%can be obtained,and qualified zinc concentrate with a Zn grade of 53.26%and a recovery rate of 91.53%can be obtained.Compared with the flotation process of the beneficiation plant,the new process adopts a new type of collector 8230 and activator X-46 with better selectivity.The amount of lime used has been reduced from the original 12.56 kg/t to 4 kg/t,effectively alleviating the pipeline blockage problem caused by the extensive use of lime and its adverse effects on tail water treatment.
作者
李敏
许宏图
原新宇
苏凤波
谢贤
陈桃
张守逊
LI Min;XU Hongtu;YUAN Xinyu;SU Fengbo;XIE Xian;CHEN Tao;ZHANG Shouxun(Chifeng NFC Baiyinnuoer Mining Co.,Ltd.,Chifeng Inner Mongolia 025473,China;Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming Yunnan 650093,China)
出处
《化工矿物与加工》
CAS
2024年第10期18-25,共8页
Industrial Minerals & Processing
基金
云南省重大科技专项计划新材料专项(202302AB080010)。
关键词
硫化铅锌矿
工艺矿物学
浮选工艺流程
闭路试验
捕收剂
活化剂
条件试验
lead-zinc sulfide ore
process mineralogy
flotation process
closed circuit test
collecting agent
activating agent
conditional test
