中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 10 No. 4 August 2000 |
（1. School of Materials and Metallurgy;
2. School of Resource and Civil Engineering, Northeastern University, Shenyang 110006, P.R.China）
Abstract:In the blast furnace slag, titanium disseminates in various mineral phases. Titanium could be concentrated mainly in perovskite, which could be selectively precipitated and grown by optimizing the operation factors like slag composition, temperature of heat treatment and additives. The titanium slag mineralography and the distribution in the as-received slag and the treated slag, as well as the methods of perovskite separation were studied. After treatment, the grain size is increased from 5μm to 200μm, the content of TiO2in perovskite increases from 48% to 81%, the morphology changes from snow-shaped grain to coarse dendrites or equiaxed crystals. A concentrate is produced by gravity separation analyzing 35.25% TiO2with a recovery of 68.28% and a tailing analyzing 9.53% TiO2. A concentrate analyzing 40.08% TiO2and a tailing analyzing 9.28% TiO2can be obtained by flotation.
Key words: gravity; flotation; slags
