REVIEW ON TANTALUM EXTRACTION BY DIFFERENT METHOD IN KENTICHA TANTALUM MINE, ETHIOPIA
نویسندگان
چکیده
منابع مشابه
Green extraction of Niobium and Tantalum from Kenticha Tantalite ore using 1-Ethyl-3-Methyl Imidazolium Chloride ionic liquid
The decomposition of the Ethiopian Kenticha tantalite ore was studied using the KOH fusion and H2O leaching system at 400 0C for a 1 h reaction time. The experimental results obtained showed that 27 wt% of Ta2O5 was mainly transformed into insoluble KTaO3, not to be KNbO3, and as well, into the dissolved liquor containing 94.73 vol% of Nb2O5 and 75.80 vol% of Ta2O5. The observations, supported ...
متن کاملFailure modes of tantalum capacitors made by different technologies
Generally, tantalum capacitor failure modes have been discussed both for the standard manganese dioxide cathode and the new conductive polymer (CP) type. For standard tantalum in the normal operation mode, an electrical breakdown can be stimulated by an increase of the electrical conductance in channel by an electrical pulse or voltage level. This leads to capacitor destruction followed by ther...
متن کاملExperimental bronchography by tantalum insufflation.
015. CHEST, VOL. 56, NO. 1, JULY 1969 tions of the problem are well demonstrated by the fact that although by 1937 more than 70 cases of extramammary Paget’s disease had been reported in the world literature, Weiner6 in reviewing most of them would acknowledge only 15 cases which satisfied his criteria for a diagnosis of extramammary Paget’s disease. This author noted that in each of the 15 cas...
متن کاملTantalizing tantalum.
Element 73 was first extracted from mineral samples and described in 1802 by the Swedish chemist Anders Ekeberg. He chose the name tantalum because “when placed in the midst of acids it is incapable of taking any of them up and saturating itself with them”, in a manner reminiscent of the Greek mythological king Tantalus (pictured) who couldn’t eat or drink anything despite being surrounded by f...
متن کاملObservations on Heavily Deformed Tantalum
The deformation of metals having the body-centered cubic (BCC) crystal lattice [1] is thought to occur by the glide of dislocations with a Burgers vector of 1 /2<111> [2, 3] or by twinning [4]. The present study is concerned with the deformation of the BCC, period-6 (third-series), transition metal, Tantalum [5, 6]. Although the slip planes have been discussed and modeled since before 1970 (see...
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ژورنال
عنوان ژورنال: International Journal of Engineering Applied Sciences and Technology
سال: 2019
ISSN: 2455-2143
DOI: 10.33564/ijeast.2019.v04i08.005