Document Type : Original Research Paper

Authors

1 M.Sc. Student, Faculty of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran

2 Professor, Faculty of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran

3 M.Sc., Geological Survey of Iran, Tehran, Iran

Abstract

Mineralogical and liberation studies are the most important parameters used in the selection of separation. An investigation was carried out to identify the various types of minerals present in fluorite ore and to determine the suitability of the methods for its preconcentration and final concentration. The sample has been evaluated and characterized by ore microscopy, x-ray diffraction, chemical analysis and also approximate mineralogy based on chemical analysis and Microscopic studies and also the texture characteristics such as grain size, Situation of infor locked particle  and  their arrangement in the ore body were also investigated. According to surveys conducted this ore contains of fluorite (40.52%), calcite (24%), quartz (20%), smitsonite (8%), galena (2%), clay minerals (3%), barite (1%) and goethite (0.6%). Carbonate phases is  two parts sparry calcite, micrite to microsparate piece has been observed. Quartz, in the form of microcrystalline with limonite and goethite oxide of stained has been observed. The liberation degrees of crushed ore in different size fractions was estimated by the Counting method of showed that for fluorite (1000 μm), Calcite (100 μm) and quartz (90 μm) of fluorite in size 100 mesh (150 μm) with quartz (36%) and calcite (23%)  were determined. The size fraction of  -600, +425, can be assessed for gravity concentration as a preconcentration process and for the size fraction -150,+75 μm  for flotation.

Keywords