摘要
强磁—浮选流程逐渐成为攀西地区钒钛磁铁矿选矿的最佳工艺流程,选钛浮选流程的给矿源于选铁后的尾矿,钛浮选流程具有TiO_2入选品位高、矿浆浓度高(50%～65%)、矿石比重大、粒度粗等特点,钛浮选入浮浓度高,对空气分散提出了挑战。针对四川龙蟒矿冶有限责任公司二选厂钛浮选流程,研究了选钛浮选机的动力学特性。经测试浮选机内轴向分散及横截面上空气分散效果良好。钛浮选由于入选品位高、粒度粗,粗粒级目的矿物易碰撞粘附,但粗粒级矿化气泡上升运输过程中脱落概率大。浮选机内存在较为明显的矿浆分层现象,距溢流堰1 700 mm深度以下矿浆浓度在50%以上,距溢流堰1 200 mm范围内浓度均小于30%,近溢流堰区域的矿浆浓度明显小于叶轮区域。
Strong magnetic separation-flotation becomes the best separation circuit for vanadium-titanium magnetite.The feeding of titanium flotation is the tailing of iron separation.The titanium flotation process is featured by high input TiO2 content,high solid content(50%~65%),high specific gravity of ore and coarse mineral particles,all those presents a challenge for air dispersion.In this paper,the dynamics characteristics of flotation cells in Sichuan Lomon had been studied.The measurement result shows good axial and radial dispersion in flotation cell.As the grade of titanium is high and the size of mineral particles is coarse,the coarse mineral particle is liable to collide and attached with the bubbles,but it is easy to detach during the transportation towards the lip.In the cell there is a significant gradient in slurry concentration.The slurry concentration of the 3 levels(1 700 mm,2 200 mm,2 700 mm)is about 55%,but the slurry concentration decreases from 55%to 25%towards the lip.
作者
樊学赛
陈俊
史帅星
王文超
刘万峰
Fan Xuesai;Chen Jun;Shi Shuaixing;Wang Wenchao;Liu Wanfeng(BGRIMM Machinery&Automation Technology Co.,Ltd.,Beijing100160,China;Sichuan Lomon Mining and MetallurgyCo.,Ltd.,Panzhihua617112,Sichuan,China)
出处
《钢铁钒钛》
CAS
北大核心
2019年第2期97-101,共5页
Iron Steel Vanadium Titanium
基金
国家自然科学基金面上项目(项目号:51674034)
四川省发展和改革委员会2019年攀西战略资源创新开发专项资金[2018]585号
关键词
钛浮选
空气分散
气泡负载率
浓度分布
titanium flotation
air dispersion
air bubble loading
solid content distribution
