Sedimentological and technological studies of abu Tartur black shales, Western Desert, Egypt
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Alexandria University, Geology Department
Alexandria University, Environmental Science Department
Publication date: 2001-01-01
Physicochem. Probl. Miner. Process. 2001;35(1):141-152
Newly conventional combination of sedimentological and technological studies aid in estimation of the resource potential of the Upper Cretaceous clays of Duwi Formation Abu Tartur plateau Western Desert, Egypt. This formation consists of interbedded black to Grey shale, phosphatic and glauconitic sandstones. The granulometric, mineralogical, and geochemical analyses were carried out on the black clays, which provided detailed information about textural parameters, composition and paleoenvironment of deposition The technological studies of black shale is new for its interesting enrichments in various rare metals as nickel , chromium and vanadium . This investigation is a laboratory study for extraction of vanadium from black shales by hydrochloric acid processing to produce leach solutions of vanadium, aluminum and magnesium chlorides. The effects of various factors affecting the leaching process such as temperature, acid concentration, particle size and stirring speed as well as the kinetics of the leaching process were studied. The most favorable conditions for the extraction of the vanadium present in the black shale are temperature 100° C, acid concentration 6 M by weight, grain size 17 μm and leaching time 90 min.
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