Application of cavitation in uranium leaching

A comprehensive review on the ultrasound-enhanced leaching recovery of valuable metals: Applications, mechanisms and prospects

“…Ultrasound-assisted leaching technology has been extensively applied to extract valuable metals from metal ores, such as vanadium-bearing shale [16] , [19] , chalcopyrite [26] , [49] , scheelite [25] , [50] , [51] , zinc oxide ore [30] , [52] , [53] , nickel laterite ore [17] , rare earth ore [29] , refractory gold ore [27] , [54] , [55] , [56] , [57] , [58] , uranium ore [59] , [60] , K-feldspar [31] , copper-bearing biotite [43] , refractory silver ore [61] , eudialyte [62] , quartz sand [63] , [64] , [65] , [66] , [67] , [68] , poly-metallic sulfide ore [13] , deep-sea nodules [69] , phosphorus-potassium associated ore [21] , sphalerite [32] , and magmatic rocks [70] . In addition, ultrasound-assisted leaching has also been developed with successful enhancement in the leaching efficiency of metals from secondary resources, including metallurgical residues [3] , [15] , [35] , [38] , [39] , [42] , [48] , [71] , [72] , [73] , [74] , [75] , [76] , [77] , [78] , [79] , [80] , [81] , [82] , [83] , [84] , [85] , [86] , spent catalysts [33] , [37] , …”

Harnessing cavitational effects for green process intensification

“…The fields of mechanical material processing, chemical and pharmaceutical processing, food and biological processing and wastewater treatment have all extensively developed and explored HC technology in recent decades. Physical processing mainly includes the emulsification, dispersion and homogenization of heterogeneous phases [35], the crystallization and preparation of nano-materials [43,44], flotation [45] and leaching [46]. Chemical processing includes organic synthesis [47][48][49], polymerisation and depolymerisation [50,51], the upgradation of crude oil and vacuum residue [52], deep desulphurisation of liquid fuels [53].…”

Kinetics of Uranium Extraction from Uranium Tailings by Oxidative Leaching

“…Among these methods, agglomeration 13 and supercritical carbon dioxide (CO 2 ) 14 can make more uranium exposed to the solvent during the leaching process. Sonochemical Technology 15 and cavitation 16 can accelerate the reaction between uranium ore and the leaching reagent. Oxidation 17 can transform insoluble U(IV) to soluble U(VI).…”