文档介绍：外文原文
Measurement of ic susceptibility in titanium minerals processing
Institution
The University of Queensland
Publication date
2004
Supervisor(s)
Dr. Peter Holtham
Dr Toni Kojovic
ic separation is routinely used in the processing of titanium minerals, and the efficiency of these operations can be determined by measuring the ic properties of the process streams. The ponents in the feed to a titanium minerals plant have specific ic susceptibilities ranging from -10-9 m3kg-1(zircon) to 10-6 m3kg-1 (ilmenite). However, in an industrial environment, in which the mineral temperature may range from 20 to 120°C, it is difficult to measure susceptibilities lower than about 10-7 m3kg-1. Hence laboratory testing of spot samples from ic separators is currently required to obtain accurate performance data. This is an inherently slow process and where feed grades are variable, optimum performance of separators is generally not achieved.
This thesis describes the development of an inductance-based instrument for measuring down to low levels of ic susceptibility online in harsh plant environments. The major difficulties in developing this device were temperature induced changes in the resistance/ capacitance of the inductance coil and phase stability of the inductance coil excitation current. Coil temperature problems were solved by using a physical small coil in batch operat