在Ca^(2+)-Na_2CO_3体系中磷灰石与石英浮选分离的溶液化学研究  

Solution chemistry study of flotation separation of apatite and quartz in Ca^(2+)-Na_2CO_3 system

作　　者：张国范[1] 汤佩徽[1] 朱阳戈[1] 丁鹏[1] 冯寅[1] 

机构地区：[1]中南大学资源加工与生物学院,湖南长沙410083

出　　处：《化工矿物与加工》2011年第6期1-4,19,共5页Industrial Minerals & Processing

摘　　要：利用单矿物浮选试验和X衍射光电子能谱(XPS)分析,结合溶液化学计算,研究了以油酸钠为捕收剂时,Ca2+和CO32-对磷灰石和石英单矿物浮选的作用机理。结果表明,在以碳酸钠为pH调整剂且调浆到pH=10左右时,磷灰石的活性成分为CaHPO4,添加的Ca2+与溶液中的溶解组分结合生成的物质与CaHPO4结构相似;石英在碳酸钠调浆体系中被Ca2+活化的主要原因是新生成的CaCO3沉积在其表面。The mechanism of interaction of Ca2＋ and CO32-with flotation separation of apatite and quartz in sodium oleate system was investigated through flotation tests,X-ray photoelectron spectroscopy（XPS） and the theory of solution chemistry.The results showed that the active ingredient of apatite was CaHPO4 when using Na2CO3 as pH regulator at pH=10,the new material which generated by Ca2＋ and the dissolved components in apatite saturated solution had similar structure with CaHPO4,and the main reason of the quartz being activated by Ca2＋ was the deposition of the new generated CaCO3 on the surface.

关 键 词：磷灰石 石英 碳酸根 金属离子 

分 类 号：TD971[矿业工程—选矿]