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Based on leaching experiments of complex silicate ore contenting scandium, the research has adopted extraction to concentrate scandium and separate impurity. The emphasis of this reaserch is the impact factors, so the experiments including extractant concentration, organic aqueous ratio, mixing time, organic phase washing, organic phase reextraction, have been conducted.
The Nyngan Scandium Project is located approximately 25km west of the town of Nyngan and 500km north-west of Sydney, New South Wales (NSW), Australia. It incorporates part of the Exploration Licence (EL) 6009 and the entire EL 6096, covering a total area of approximately 9,000ha. Touted to be the ...
A study was carried out for recovery of scandium from KOH sub-molten salt (SMS) leaching cake of fergusonite. Major metals in the cake were rare earths (RE), K, Th, U and Ca, and minor metals were Pb, Nb, Ta, Ti, Fe, Si, Sn, Al, Bi and Mn.
In this study, the optimization of scandium extraction from bauxite residue with sulfuric acid is investigated using Taguchi methodology. Based on previous studies, acid molarity, leaching time, solid/liquid ratio, and reaction temperature were selected as .
The scandium concentrate used in the leaching experiment was obtained from the rare earth ore containing scandium in Yunnan Province, the sample used in experiment is leaching liquid containing scandium which the content of scandium is 3.6g/t, with complex impurity composition. The main influencing factors of extraction in hydrochloric acid solution were acidity, mixing time, phase ratio etc ...
Research Highlights This paper comprehensively reviews the metallurgical processes to recover scandium from various sources. Residues, tailings and waste liquors in the production of other metals are the resources for scandium. The most promising scandium resources for its production are bauxite and nickel laterite ores. Combined hydro- and pyro-metallurgical processes are commonly used for ...
scandium(III) complex by the method of Muetterties and Wrieht 23 b. Precipitation of the tris (tropolonato) scandium(III) complex from aqueous solution 24 c, Precipitation of the tetrakis (tropolonato) scandium(III) complex from aqueous methanol medium 24 2. Thermal Studies 25 a. Thermogravimetry 25 b. Thermal reactions 25 3.
The results show that the extraction rates of Sc can reach up to 95%.The removing of Fe,Mn and Ti can be reached 99.1%, 99.4% and 99.5% respectively.The anti-extraction rates from organic phase with NaOH reach up to 99.7 % with effective separation from Fe,Mn and Ti. ... "Experimental Study on Extracting Scandium from HCl Leachate of ...
Australia's largest, advanced scandium mining project, with Definitive Feasibility Study commenced simple metallurgy –off-the-shelf solvent extraction processing plant consistently achieving >97% recovery of scandium Similar resource tonnage and mining head grades of cobalt, nickel and scandium as Clean TeQ's Syerston ore body 10
In the past decade, various scandium recovering technologies have been developed in China because of the increasing use of scandium in high-tech products and the demands of the international scandium market. Solvent extraction is reported to be one of the most effective techniques to extract scandium from various resources.
Solvent extraction of scandium occurs by contacting the PLS with an organic phase containing a primary amine (Primene JM-T) dissolved in a kerosene (Shellsol D70) in three counter current extraction stages. A scandium sulphate complex ion leaves the aqueous phase and loads onto the amine.
Scandium is concentrated in the dust during TiO2 chlorization. The dust can be used as a raw material from which Scandium is extracted. Scandium leaching conditions such as leaching acid concentration, liquid-solid ratio, leaching temperature and leaching time is investigated with chemical analysis through the orthogonal experiment. The results show that the optimum leaching conditions is ...
Jul 02, 2015· A method for separating and refining scandium according to the present invention is a method for separating and refining scandium by selectively extracting the scandium from a solution produced by applying a leaching treatment to ores and intermediates containing the scandium using an acid solution or the like.
Nigel Ricketts, our Process Engineering expert and Manager of Studies in Queensland, recently presented a paper at TMS 2019 in Texas on scandium solvent extraction. If you are a process engineer interested in scandium processing techniques, or a mining professional looking at scandium opportunities, this condensed version of the technical paper might be of interest to you.
In this study, the feasibility and mechanism of recovering scandium from a scandium-rich material were investigated based on the acid leaching and solvent extraction process. The results showed that phosphoric acid had an advantage in separating scandium from impurities over hydrochloric acid, sulfuric acid and nitric acid.
Extraction of Scandium (III) from acidic solutions using organo-phosphoric acid reagents: A comparative study Article (PDF Available) in Separation and Purification Technology · .
However, it is very difficult to enrich this ore, because of the poor beneficiability of silicate and dispersed distribution of scandium minerals. This paper has focused on magnetic separation processes for the pre-concentration of poor magnetite associated with scandium oxide ore, according to the composition and occurrence state of scandium.
Based on the sample's composition, particle size distribution and the occurrence state of scandium, studies were conducted of the pre-concentration of scandium oxide from the low-grade magnetite ...
Separation of cyclotron-produced 44 Sc from a natural calcium target using a dipentyl pentylphosphonate functionalized extraction resin. ... Despite the efforts of several research groups, the ideal 44 Sc production and separation ... consistent with the production of the scandium complex since these peaks were not present in the control vial ...
Scandium is a chemical element with the symbol Sc and atomic number 21. A silvery-white metallic d-block element, it has historically been classified as a rare-earth element, together with yttrium and the lanthanides.It was discovered in 1879 by spectral analysis of .
Preliminary extraction of scandium and direct input of extractants into flame allow us to increase selectiv-ity and sensitivity of the analysis. Practically full extraction of the complex of scandium from hydrochloride medium was used for develop-ment of extraction-atomic-absorption determination of scandium in soils. Selective technique for ...
This research is concerned with the solvent extraction into chloroform of the lanthanides, using 2,5-dimethyl-2-hydroxyhexanoic acid (DMHHA). This acid is the first ..cap alpha..-hydroxy aliphatic acid to be studied as an extracting agent for the lanthanides.
Download Citation on ResearchGate | Extraction and refining of scandium upon the processing of baddeleyite concentrates | Conditions of extractive concentration of scandium by 80% tributyl ...
Experimental Study on Extraction of Scandium from Complex Silicate Ore ... G. F. Zhang et al., "Experimental Study on Concentrating Scandium by Leaching from Associated Scandium Ore", Advanced Materials Research, Vols. 734-737, pp. 1033-1036, 2013.
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