Extraction Behavior of Scandium From a Refractory Nickel …
This study investigated the high-pressure acid leaching behavior of scandium (Sc) together with nickel (Ni) and cobalt (Co) from a refractory nickel laterite ore. During this study, basic process parameters (acid load, temperature, duration, and particle size) were tested and optimum process conditions were determined.
Research on Scandium Recovery and Extraction Process
Show abstract. ... The methods for titanium and scandium extraction from the aqueous solution consist of solvent extraction, ion exchange (Korovin and Shestak, 2009;Van Nguyen et al., 2016;Li et ...
Optimization Extraction of Scandium from Scandium …
Extracting scandium from scandium concentrate depends on liquid mainly. Sulfuric acid, hydrofluoric acid, nitric acid, and hydrochloric acid can be used as the main leaching agents. ... (2022) A novel process for recovery of scandium, rare earth and niobium from Bayan Obo tailings: NaCl-Ca(OH) 2-coal roasting and acid leaching. Miner …
Extraction of scandium from red mud by acid leaching
Zhu et al. (2020a Zhu et al. (, 2020b proposed a novel acid leaching-solvent X. Pan et al. extraction process to recover scandium from RM, and the extraction efficiency in HCl solution is >98 % ...
Delving Into Scandium: A Complete Breakdown Of Its …
Extraction process. Scandium is a rare element found in the Earth's crust. Extracting scandium from its natural sources requires advanced mining techniques that are used to locate and extract the ore. Once the ore has been located, it must be refined and purified to produce scandium metal.
A Process Flowsheet for the Extraction of Niobium, Titanium …
Scandium is extracted from whole ore hydrochloric acid leach solutions using solvent extraction and is further refined through a re-leach and precipitation process. Scandium leach residues are treated in a sulphuric acid sulphation process to recover separate niobium and titanium precipitates as well as to solubilize the remaining …
Processes | Free Full-Text | Recovering Scandium …
In this study, a roasting-hydrolysis-acid leaching process is used to extract scandium from the scandium rough concentrate. The scandium rough concentrate containing Sc 2 O 3 of 76.98 g/t was …
Scandium Recovery Methods from Mining, Metallurgical …
The recovery of scandium (Sc) from wastes and various resources using solvent extraction (SX) was discussed in detail. Moreover, the metallurgical extractive procedures for Sc recovery were presented. ... Different operational parameters play an important role in the extraction process, such as the type of the aqueous phase and its …
Separation and purification of scandium by solvent extraction …
Parker Centre/CSIRO Process Science and Engineering/CSIRO Minerals Down Under National Research Flagship, 7 Conlon Street, Waterford, WA 6152, Australia.===Search for more papers by this author. ... Mixed extractants or synergistic systems for the solvent extraction of scandium have been developed. Extraction …
Scandium extraction from silicates by hydrometallurgical process …
Scandium can be extracted from silicates by hydrometallurgical process at normal pressure and temperature with pretreatment by sulfuric acid curing. Sulfuric acid dosage with 0.75 times of the theoretical amount, curing time of 15 h, curing temperature of 200 °C, pulp density for L/S ratios of 30:1, leaching temperature of 75 °C and stirring ...
Occurrence and Extraction Methods of Scandium
Extraction Techniques: Navigating the Complexities. Extracting scandium from its natural sources is a complex process due to its low abundance and the need for precision in separating it from other elements. Over the years, various extraction techniques have been developed, each with its advantages and challenges. 1. Hydrometallurgical Processes:
Recovery of scandium from red mud by leaching with titanium white waste
Currently, to avoid third phase generation in the solvent extraction process, the synergistic solvent extraction system has been widely used for Sc recovery. Wang et al. ... Scandium solvent extraction with 10% P204–5% TBP- 85% sulfonated kerosene was performed on the clarified Sc leach liquor. The effects of the A/O ratio, temperature, and ...
An innovative process for extracting scandium from …
The effects of reaction temperature, reaction time, mass ratio of alkali to ore, and agitation speed on the extracting ratio of SiO2 during the process of extracting silicon from laterite-nickel ...
Rio Tinto develops method of extracting scandium from …
Rio Tinto develops method of extracting scandium from waste. Rio Tinto says that scientists at the company's technology centre in Sorel-Tracy, Quebec, Canada, have found a way to extract and purify scandium — a rare and useful metallic element — from titanium dioxide production waste. The United States, Canada, Australia and the …
Metallurgical processes for scandium recovery from
Ross and Rosenbaum (1962) reported a solvent extraction process with primary amine such as Primene JMT as extractant for scandium recovery from uranium mill waste solutions. Scandium was almost quantitatively extracted from the waste solution containing 0.6 mg/L Sc in a small scale pilot plant operation with 2.5% Primene JMT in kerosene at …
Extraction of scandium from red mud by modified activated …
Activated carbon (AC) was modified by tri-butyl phosphate (TBP) for selectively extracting scandium from red mud and characterized by BET (Brunauer-Emmett-Teller) surface area. The modified AC had a preferential adsorption to scandium. The influences of adsorbent dosage, adsorption temperature, and time on adsorption …
Development of Scandium-Recovery Process from …
The process consists of the following steps: scandium concentrating by classification or neutralization, selective scandium leaching, impurity removal by …
Recovery of scandium from various sources: A critical …
A process patented by Baptiste (1959) describes scandium extraction by fractionation sublimation in chloride medium, to obtain ScCl 3. The process consists …
A critical review on separation and extraction of …
In this review, we summarizes the typical methods of extracting scandium include solvent extraction, ion exchange, solid phase material adsorption, etc., and …
An innovative process for extracting scandium from …
In this study, a two-stage pyro-hydrometallurgical process was investigated to extract scandium from a laterite ore. The first stage of the process involves carbothermic reduction in which iron, nickel, and cobalt contents of the ore are reduced with carbon at 1400–1600 °C and separated as a metallic phase.
A review on solvent extraction of scandium
This review article on the development course of scandium solvent extraction covers: (i) neutral phosphorus extractants; (ii) acid phosphorus extractants; (iii) carboxylic acid extractants; (iv) amine extractants; (v) chelating extractants; (vi) synergistic extractants. Those extractants are of valuable reference for developing new separation ...
Extraction of scandium from bauxite residue by high …
HPAL process offers a high extraction level of scandium and a quick process. In addition, it can reduce the dissolution of silica, which can lead to the formation of silica gel during the leaching process. Besides, the solubility of main impurities, such as iron, aluminium, and titanium, can also be reduced due to the hydrolysis of their ions ...
A Novel Approach for Separation and Recovery of …
The scandium in the ltrate after the recovery of titanium can be nely extracted with P507, and 99.79% scandium can be extracted by single-stage extraction under the P507 concentration of 15%, the phase ratio (O/A) of 1:13, and extraction time of 6 min. In addition, the process of extracting scandium with P507 is an exother-
Materials | Free Full-Text | Scandium Recovery …
The recovery of scandium (Sc) from wastes and various resources using solvent extraction (SX) was discussed in detail. Moreover, the metallurgical extractive procedures for Sc recovery were presented. …
Scandium Recovery Methods from Mining, …
With increasing solution concentration, the extraction of Sc increases, indicating a solvating extraction mechanism. Scandium can also be extracted from low-acidic solutions using neutral OPC extractants. For example, scandium extraction was …
Recovery of scandium from various sources: A critical review …
An innovative process for extracting scandium from nickeliferous laterite ore: Carbothermic reduction followed by NaOH cracking. Hydrometallurgy, Volume 191, 2020, Article 105194. Jihye Kim, Gisele Azimi. Study of adsorption behavior of a new synthesized resin containing glycol amic acid group for separation of scandium from …
Solvent extraction of scandium from chlorination system …
The process consists of two solvent extraction circuits, viz. the removal of zirconium from the starting scandium oxide (purity about 99%) from a 6 M HClO4 solution of scandium with tributyl ...
Development of Scandium-Recovery Process from Titanium …
The process consists of the following steps: scandium concentrating by classification or neutralization, selective scandium leaching, impurity removal by neutralization, solvent extraction of scandium by using D2EHPA, purification, and roasting. We optimized the above steps to achieve an effective process to obtain …
Extraction of scandium from sulfate solution produced by …
The experimental results showed that the best condition for extracting scandium by D2EHPA from the solution produced by re-leaching of the scandium-bearing precipitate (obtained from the stage-2 of iron and aluminium precipitation) was obtained at an extractant concentration of 5% (v/v), O/A phase ratio of 1/1, initial pH of the aqueous ...
A review on solvent extraction of scandium
The extraction chemistry of scandium, including thermodynamics and kinetics, is the basis for the development of scandium extraction and separation …