【作者】 杨康； 丘琛辉； 张梦成； 郇冬冬； 刘心中；

【Author】 Yang Kang;Qiu Chenhui;Zhang Mengcheng;Huan Dongdong;Liu Xinzhong;Fujian University of Technology,School of Ecological Environment and Urban Construction;

【机构】 福建工程学院生态环境与城市建设学院；

【摘要】 为了对福建省某地区的萤石尾矿进行综合利用,处理尾矿对生态环境的影响,采用了分级浮选的工艺流程和粗粒级尾矿常规采用的浮选工艺,而对细粒级的尾矿创新采用了高效旋流-静态微泡浮选柱浮选工艺,实现对萤石质量分数为14%的尾矿资源综合利用。本文通过试验研究,得出了细粒级尾矿浮选工艺的最佳条件为:pH=8、水玻璃用量800g/t、复合捕收剂成分为油酸和改性脂肪酸盐复配烷基a-羟基双膦酸,比例为2:1,用量1000g/t。浮选出的萤石精矿在110℃下烘干,生产出高强度萤石球团,CaF2含量高达79.82%,远超过冶金级萤石精矿的标准。更多还原

【Abstract】 In order to comprehensively utilize fluorite tailings in a certain area of Fujian Province and deal with the impact of tailings on the ecological environment, the process flow of classified flotation and the conventional flotation process of coarse-grained tailings are adopted. The tailings innovatively adopts the high-efficiency cyclone-static microbubble flotation column flotation process to realize the comprehensive utilization of tailings resources with a mass fraction of 14% fluorite. In this paper, through experimental research, it is concluded that the optimal conditions for the flotation process of fine-grained tailings are: p H=8, the amount of water glass is 800g/t, and the composition of the composite collector is oleic acid and modified fatty acid salt compound alkane. base a-hydroxybisphosphonic acid, the ratio is 2:1, and the dosage is 1000g/t. The flotation fluorite concentrate is dried at 110°C to produce high-strength fluorite pellets with a CaF2 content of up to 79.82%, far exceeding the standard of metallurgical grade fluorite concentrate.更多还原