用新型捕收剂G7浮选一水硬铝石型铝土矿  

Experiment on Diasporic Bauxite Floatation Using a New Collector G7

作　　者：王祖旭[1,2] 李楠[3] 

机构地区：[1]云南省选冶新技术重点实验室,云南昆明650031 [2]昆明冶金研究院,云南昆明650031 [3]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《金属矿山》2015年第9期76-79,共4页Metal Mine

摘　　要：昆明冶金研究院研发了一种新型、高效的铝土矿正浮选捕收剂G7,为检验其在提高精矿指标、耐低温、易消泡脱水方面的优越性能,以云南某一水硬铝石型铝土矿为研究对象进行了选矿试验。结果表明,Al2O3和Si O2含量分别为67.51%和12.64%、铝硅比为5.34的铝土矿石在磨矿细度为-0.074 mm占90%、矿浆温度为3℃和20℃的情况下,采用2粗2精1扫、中矿顺序返回流程处理,分别可获得Al2O3品位和回收率为75.51%和89.13%,铝硅比为15.63的优质精矿和Al2O3品位和回收率为76.25%和90.28%、铝硅比为16.68的优质精矿。精矿指标分析和浮选过程观察表明,G7是一种性能优良、稳定、高效且适应性强的铝土矿浮选捕收剂。A new kind of efficient collector namely G7 used in direct floatation of bauxite has been developed by Kun- ming Metallurgy Research Institute. In order to verify its good performance in improving floatation index, resisting low tempera- ture easy defoaming and dewatering, tests have been done by employing it in floatation of a diasporie bauxite from Yunnan Province. The results show that with grinding fineness of 90% -0.074 mm ,by adopting the closed circuit process of two roug- hing-two cleaning-one scavenging, bauxite concentrate with AI： 03 grade of 75.51% , recovery of 89.13% and allumina-silica ratio of 15.63 ,and bauxite concentrate with A1203 grade of 76.25% , recovery of 90.28% and allumina-silica ratio of 16.68 were obtained at the slurry temperature of 3 ℃ and 20 ℃, respectively. Observations during the experiments together with the index analysis on the concentrate indicates that G7 is a kind of adaptable collector with high performance, high stability under low temperature and high efficiency for bauxite flotation.

关 键 词：一水硬铝石型铝土矿 脱硅 铝硅比 新型捕收剂G7 

分 类 号：TD923.7[矿业工程—选矿]