一种混合型钙质磷块岩的浮选工艺研究  

Study on the technology for flotation of a mixture of calcareous phosphate rock with carbonates

作　　者：张路莉[1,2] 谢国先 庞建涛[1,2] 杨尔勋[1] Zhang Luli;Xie Guoxian;Pang Jiantao;Yang Erxun(Yunnan Phosphate Group Co.,Ltd.,Kunming Yunnan 650600,China;National Engineering and Technology Research Center for Development&Utilization of Phosphate Resources,Kunming Yunnan 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：《化工矿物与加工》2021年第6期14-16,共3页Industrial Minerals & Processing

摘　　要：针对高碳酸盐混合型钙质磷块岩,通过不同浮选工艺对比研究,确定合理的选矿工艺流程:正浮选1粗—反浮选1粗1精和部分尾矿再选,获得了P_(2)O_(5)品位为30.18%、MgO质量分数为0.81%、产率为57.82%、P_(2)O_(5)回收率为84.62%的磷精矿指标,可为难选磷块岩的选矿提供借鉴。With the calcareous phosphate rock contained high content of carbonates,the comparative beneficiation study by use of different flotation technologies was carried out.As a result,the reasonable flotation circuit was composed of one rougher for direct flotation,one rougher and one cleaner for reverse flotation as well as retreatment of part tailings.The phosphate concentrate containing 30.18%P_(2)O_(5) and 0.81%MgO can be obtained with weight recovery of 57.82%and P_(2)O_(5) recovery of 84.62%.This study provides a reference for beneficiation of the difficult-to-be-upgraded phosphate rocks.

关 键 词：钙质磷块岩 反浮选 正反浮选 尾矿再选 磷精矿 

分 类 号：TD971[矿业工程—选矿]