Investigation on Flotation of the Kyanite Ore from a Chinese Mine
In this paper the test results of flotation of the kyanite ore from a Chinese mine are described.The objective of this work is to determine effective recovery process to obtain kyanite concentrate with high quality and high recovery for a new concentrator design.The valuable minerals of the ore are kyanite, garnet and magnetite, contents of them are 14.0%,5.9% and 1.2%, respectively. The gangue minerals are mainly biotite, feldspar and quartz, contents of them are 33.8%, 17.8% and 25.6%, respectively. The kyanite in the ore contains a little iron.In laboratory flotation tests the factors affecting the flotation such as slime, alkalinity of pulp,and flowsheet configuration are studied. The interference of biotite on kyanite flotation as well as selective flotation of garnet is examined. On the basis of above-mentioned results the flowsheet of ore treatment comprising de-sliming, mica flotation, low intensity magnetic separation of magnetite,high intensity magnetic separation of garnet and coarse biotite as well as flotation of kyanite is presented for comprehensive recovery of kyanite, garnet and magnetite. The kyanite concentrate containing more than 59% Al2O3 is obtained with a kyanite recovery of 70.0%. The contents of Fe2O3and biotite in kyanite concentrate decreased from 2.02% and 5% to 1.30% and 1%, respectively. The disadvantage of low kyanite grade in raw ore is compensated by accessory recovery of garnet and magnetite in the ore.
Kyanite Garnet Magnetite Biotite Flotation Magnetic separation
X.P.Guo Y.R.Pang Y.C. Zhi Z.Q. Zhang
Research Center for GeoAnalysis, Baoding, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1234-1240
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）