基于窄粒级浮选的云南某胶磷矿可选性研究  

Study on the Washability of a Phosphate Rock in Yunnan based on Narrow Particle Size Flotation

作　　者：蔡忠俊 杨稳权[1,2] 何海涛 张华[1,2] 王冲 Cai Zhongjun;Yang Wenquan;He Haitao;Zhang Hua;Wang Chong(Yunnan Phosphate Group Co.,Ltd.,Kunming 650600,China;National Phosphorus Resources Development and Utilization Engineering Technology Research Center,Kunming 650600,China)

机构地区：[1]云南磷化集团有限公司,云南昆明650600 [2]国家磷资源开发利用工程技术研究中心,云南昆明650600

出　　处：《云南化工》2023年第3期36-40,共5页Yunnan Chemical Technology

摘　　要：针对云南某难选胶磷矿磨矿后分为粗(>75μm)、中(25~75μm)、细(≤25μm)3个窄粒级,分别开展了浮选试验研究,探究了各粒级中不同矿物可浮性差异,并研究了药剂制度、充气量、搅拌强度对细粒级胶磷矿浮选的影响。通过研究,发现随粒级变细,磷含量逐渐降低,镁及其他杂质含量逐渐升高。粗粒级因解离不充分难选,细粒级因颗粒太小,机械夹带严重,药剂分选性差而难选。调整充气量、搅拌强度及采用超声分散选矿可一定程度提高浮选效果,优化浮选指标。For a refractory phosphate rock in Yunnan,it is divided into coarse(+75μm),medium(25~75μm),thin(-25μm).The flotation experiments were carried out for three narrow particle sizes to explore the differences in the floatability of different minerals in each particle size,and the effects of reagent system,air volume and stirring strength on the flotation of fine-grained phosphate rock were studied.Through research,it is found that the phosphorus content decreases gradually and the magnesium and other impurities content increases gradually as the particle size becomes finer.Coarse particles are difficult to be separated due to insufficient dissociation,and fine particles are difficult to be separated due to too small particles,serious mechanical entrainment,and poor reagent separation.The flotation effect can be improved to a certain extent and the flotation index can be optimized by adjusting the air volume and stirring intensity and adopting ultrasonic dispersion beneficiation.

关 键 词：胶磷矿 分级浮选 窄粒级 

分 类 号：TG115[金属学及工艺—物理冶金]