Flotation separation of molybdenite and talc using tragacanth gum as depressant and potassium butyl xanthate as collector  

黄薯树胶为抑制剂和丁基黄药为捕收剂的辉钼矿与滑石浮选分离

作　　者：Chun-hui ZHONG Bo FENG Yuan-gan CHEN Meng-chi GUO Hui-hui WANG 钟春晖;冯博;陈渊淦;郭梦池;汪惠惠(江西理工大学江西省矿业工程重点实验室,赣州341000;矿冶科技集团有限公司矿物加工科学与技术国家重点实验室,北京102628;中南大学战略含钙矿物资源清洁高效利用湖南省重点实验室,长沙410083)

机构地区：[1]Jiangxi Key Laboratory of Mining Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China [2]State Key Laboratory of Mineral Processing,BGRIMM Technology Group,Beijing 102628,China [3]Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources,Central South University,Changsha 410083,China

出　　处：《Transactions of Nonferrous Metals Society of China》2021年第12期3879-3890,共12页中国有色金属学报（英文版）

基　　金：The authors are grateful for the financial supports from the National Natural Science Foundation of China(No.51664020);the Natural Science Foundation of Jiangxi Province,China(No.20202ACBL214010);Open Foundation of State Key Laboratory of Mineral Processing,China(No.BGRIMM-KJSKL-2020-12);Open Foundation of Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources,China(No.2018TP1002).

摘　　要：Tragacanth gum(TG)was explored as a depressant to realize the flotation separation of molybdenite and talc.The flotation experiments indicated that when using potassium butyl xanthate(PBX)as a collector,molybdenite showed excellent floatability while talc was completely depressed by TG,thus realizing the flotation separation of the two minerals.X-ray photoelectron spectroscopy(XPS)analysis results showed that TG was adsorbed on molybdenite surface via chemisorption.The results of contact angle measurement,Fourier transform infrared(FTIR)spectroscopy,and time-of-flight secondary ion mass spectrometry(ToF-SIMS)indicated that the pre-adsorption of TG on molybdenite could not hinder the further chemisorption of PBX on molybdenite.Because PBX has no collecting ability on talc,the flotation separation of molybdenite and talc came true using PBX to collect molybdenite and TG to depress talc.探索以黄薯树胶(TG)为抑制剂,实现辉钼矿与滑石的浮选分离。浮选试验表明,以丁基黄药(PBX)为捕收剂时,辉钼矿具有良好的可浮性,而滑石则被TG完全抑制,实现两种矿物的浮选分离。X射线光电子能谱(XPS)分析结果表明,TG以化学吸附的方式吸附在辉钼矿表面。接触角测试、傅里叶变换红外光谱(FTIR)和飞行时间二次离子质谱(ToF-SIMS)结果表明,TG在辉钼矿上的预先吸附不能阻止PBX在辉钼矿上的进一步化学吸附。由于PBX对滑石没有捕收能力,通过PBX捕收辉钼矿和TG抑制滑石实现辉钼矿与滑石的浮选分离。

关 键 词：MOLYBDENITE tragacanth gum organic depressant TALC flotation separation 

分 类 号：TD923[矿业工程—选矿]