gallium extraction from jajarm bayer process liquor (jajarm, iran) was investigated using microemulsions. also the behavior of aluminum was studied as an impurity. kelex100 (4-ethyl, 1-methyl, 7-octyl, 8-hydroxyquinoleine), iso-decanol and n-butanol, and kerosene were used as the surfactant, co-surfactant, and oil phase, respectively. ternary phase diagrams were produced using various co-surfac...

Underground mining method selection is one of the most crucial decisions that should be made by mining engineers. Choosing a suitable underground mining method to carry out extraction from a mineral deposit is very important in terms of the economics, safety and the productivity of mining operations. The aim of this study is developing a fuzzy model to selection the optimum mining method by usi...

the jajarm karst bauxite deposit is located about 175 km southwest of bojnourd. the deposit has been developed as a stratiform horizon along the contact of triassic dolomites and the jurassic shales and sandstone. in this study, the textural elements of the jajarm bauxites are classified into matrix and separated textures based on morphological and genetic criteria. pelitomorphic and microgranu...