Study on Intensification of Baddeleyites Concentrate Deep Cleaning by Mechanical Activation
This is a brief survey of the technological solutions for deep cleaning of baddeleyites concentrate. Baddeleyite is part of kamaphorite of composite apatite-magnetite ore in alkaline-ultrabasic mountain range of Kola Peninsula. Baddeleyites concentrate, which is being produced by Kovdorsky GOK (ore mining and processing enterprise) contains 97.5%～98.5% (ZrO2 + HfO2) and also scandium oxide (0.05%). It is usually used without any chemical processing. World demand for zirconium oxide is constantly on the rise. Its consumption grows in ceramic industry and in high-tech spheres. Thats why the demand for its purity is very important nowadays (additional cleaning from phosphorus, silicon, iron, aluminium). The mechanism and kinetics of interaction of activated baddeleyite with sulphuric acid has been studied as well. While applying method of mathematical modeling it was confirmed that the mechanical activation is effective for the intensification of sulphation process of baddeleyites concentrate with the aim of purifying it from dirt. The use of the calculated optimal regimes allows to reduce such technological operation factors as: temperature,the duration of process, the sulphuric acid consumption. It also allows to determine the conditions of anticipatory abstraction of scandium and main dirt in solution in comparison with zirconium oxide.
Baddeleyites concentrate Cleaning Mechanical activation Planetary mill Baddeleyites suiphation Sulphuric acid Monoclinic modification Tetragonal modification Higher reaction ability
N.I. Tyushkova
The Institute of complex problems of Earths interior development, Moscow, Russia
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1696-1703
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）