scholarly journals Rare-Earth Concentrate Production From Technogenic Mineral Formations

2017 ◽  
Vol 2 (2) ◽  
pp. 158
Author(s):  
B. K. Kengaliev ◽  
T.YU. Surkova ◽  
S.B. Yulusov ◽  
E. A. Pirmatov ◽  
A. P. Dulenin
Keyword(s):  
Rare Earth ◽  
Sulfuric Acid ◽  
Rare Earth Elements ◽  
Raw Materials ◽  
Heap Leaching ◽  
Acid Solutions ◽  
Industrial Products ◽  
Potential Sources ◽  
Sulfuric Acid Solutions ◽  
Concentrate Production

<p>Based on the analysis technology of processing of uranium-containing raw materials, identified potential sources of rare earth elements from among the industrial products and waste: uranium sorption tails, sulfuric acid solutions of heap leaching of uranium, man-made mineral formations from phosphate processing of uranium ores. Based on the analysis technology of processing of uranium-containing raw materials, identified potential sources of rare earth elements from among the industrial products and waste: uranium sorption tails, sulfuric acid solutions of heap leaching of uranium, man-made mineral formations from phosphate processing of uranium ores.</p>

Extraction of vanadium and associated elements from black shale ores by hydrodynamic activation technology of sulfuric acid solutions

2021 ◽  
pp. 60-68
Author(s):  
G. K. Mamytbekov
Keyword(s):  
Rare Earth ◽  
Sulfuric Acid ◽  
Black Shale ◽  
Soluble Form ◽  
Acid Solutions ◽  
Technological Parameters ◽  
Residual Content ◽  
The Republic ◽  
Degree Of Extraction ◽  
Sulfuric Acid Solutions

The purpose of the work was to justify the possibility of converting vanadium in ore mainly into a readily soluble form in the form of hydrated oxides — vanadyls of the general formula VO2+ X (X is an anion) due to the hydrodynamic activation of sulfuric acid solution. Leaching tests were carried out in several stages and by various methods, the duration of which depended on the final indicators of vanadium extraction into the productive solution and its residual content in ore, as well as side components (Mo, W, rare earth metals). The article for the first time is examined the extraction of vanadium and associated elements from black shale ores (Kurumsak deposits, Kyzylorda oblast, the Republic of Kazakhstan) by the hydrodynamic activation of sulfuric acid. The activation of sulfuric acid solutions is carried out in the cavitation mode in a circulating type hydrodynamic apparatus at a pressure of 5 atm supplying a fluid flow to the cavitation nozzle by means of a centrifugal pump. It was found that the hydrodynamic activation of sulfuric acid leads to a significant increase in the degree of extraction of vanadium from 6 to 87% and related components depending on the decreasing in granule size. The technological parameters of leaching, such as pH, redox potential, salinity, acid intensity and filtration, are significantly improved. The results of chemical analysis of productive leaching solutions of the ore for the total contents of V2O5, uranium and rare earth concentrates were equal to 0.62 and 0.95 g/l, 47.26 and 41.43 mg/l and 62.44 and 37.26 mg/l irrespectively, that indicate the technological possibility of carrying out the heap leaching process.

scholarly journals Selectivity of extraction of rare earth metals from sulfuric acid media by neocarboxylic acid hydrazides

2021 ◽  
Vol 12 (2-2021) ◽  
pp. 185-187
Author(s):  
V. A. Nikitina ◽  
◽  
A V. Radushev ◽  
L. G. Chekanova ◽  
◽  
...  
Keyword(s):  
Rare Earth ◽  
Sulfuric Acid ◽  
Rare Earth Metals ◽  
Selective Extraction ◽  
Acid Solutions ◽  
Acid Media ◽  
Sulfuric Acid Solutions

The effect of Fe3+, Al3+, and PO43- ions on the efficiency of extraction of REM ions from sulfuric acid solutions was studied. The effectiveness of the HD1519 reagent for the concentration and selective extraction of REM ions is shown.

Protection features of chromium-nickel steel in sulfuric acid solutions by triazole derivative

2019 ◽  
pp. 15-21
Author(s):  
Ya.G. Avdeev ◽  
◽  
Yu.B. Makarychev ◽  
D.S. Kuznetsov ◽  
L.P. Kazanskii ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Nickel Steel ◽  
Acid Solutions ◽  
Triazole Derivative ◽  
Sulfuric Acid Solutions

Electrochemistry of Gold in Aqueous Sulfuric Acid Solutions under Neural Stimulation Conditions

2005 ◽  
Vol 152 (7) ◽  
pp. E212 ◽  
Author(s):  
Daniel R. Merrill ◽  
Ionel C. Stefan ◽  
Daniel A. Scherson ◽  
J. Thomas Mortimer
Keyword(s):  
Sulfuric Acid ◽  
Neural Stimulation ◽  
Acid Solutions ◽  
Aqueous Sulfuric Acid ◽  
Sulfuric Acid Solutions
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