四种胺类捕收剂体系中两相泡沫和赤铁矿/石英三相泡沫的稳定性  

Foam Stability of Two Phase and Hematite/Quartz Three Phase in Four Amine Collector Systems

作　　者：罗溪梅[1,2,3] 吴雪僮 齐琳萍 韦达勇 李超 杨文[1] 王云帆 LUO Ximei;WU Xuetong;QI Linping;WEI Dayong;LI Chao;YANG Wen;WANG Yunfan(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources,Kunming 650093,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]昆明理工大学复杂有色金属资源清洁利用国家重点实验室,昆明650093 [3]云南省战略金属矿产资源绿色分离与富集重点实验室,昆明650093 [4]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《有色金属工程》2022年第12期84-90,共7页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(51964025);云南省万人计划青年拔尖人才项目(YNWR-QNBJ-2018-167);昆明理工大学分析测试基金重大项目(2020T20140027)。

摘　　要：选取赤铁矿和石英两种纯矿物,十二胺、十二烷基三甲基氯化铵、GE609、N-十二烷基乙二胺四种胺类捕收剂,研究了不同pH值和捕收剂浓度对两相泡沫稳定性的影响以及不同粒级的赤铁矿和石英对三相泡沫稳定性的影响。结果表明,除N-十二烷基乙二胺外,其余三种胺类捕收剂溶液的泡沫半衰期均随着捕收剂浓度的增加呈现先升高后降低的趋势,且泡沫稳定性总体呈现酸性>中性>碱性的规律。N-十二烷基乙二胺的泡沫半衰期随浓度的增加逐渐升高,泡沫稳定性呈现碱性>中性>酸性的规律;在四种胺类捕收剂体系中,加入不同粒级石英或者赤铁矿颗粒后均能够在一定程度上提高泡沫的稳定性,颗粒粒度越细,泡沫越稳定,-18μm粒级石英颗粒的影响尤为明显;石英提高泡沫稳定性的程度远高于赤铁矿,加入细粒级的石英颗粒能够大幅度提高泡沫稳定性。微细粒级石英是急剧提高胺类捕收剂浮选泡沫稳定性的关键因素。The effect of pH values and collector concentrations on the foam stability of two phase solutions using dodecylamine,dodecyltrimethylammonium chloride,GE609,and N-laurel ethanediamine as amine collectors respectively and the effect of hematite/quartz with different particle sizes on the three phase foam stability were studied in this paper.The results showed that except N-laurel ethanediamine,the foam half-lives of the other three amine collector solutions increased firstly and then decreased with the increase of the concentration of the collector,and the order of foam stability was acidic condition>neutral condition>alkaline condition.The foam half-life of N-laurel ethanediamine increased gradually with the increase of concentration,and the order of foam stability was alkaline condition>neutral condition>acidic condition.In the four amine collector systems,adding quartz or hematite particles with different particle sizes could improve the foam stability to a certain extent,the finer the particle size,the more stable the foam,especially the effect of-18μm quartz particles was prominently obvious.The enhanced impact of quartz on foam stability was significantly higher than hematite,and the addition of fine quartz particles could greatly improve the foam stability.Fine quartz was the key factor to improve the foam stability in flotation using amine collectors.

关 键 词：胺类捕收剂 泡沫稳定性 泡沫半衰期 石英 赤铁矿 

分 类 号：TD952[矿业工程—选矿]