system and method for recovery of scandium values from scandium


METHOD FOR RECOVERING SCANDIUM - SUMITOMO ...

2016/02/18· The method for recovering scandium according to claim 1, the leaching step of obtaining a leachate and leach residue by solid-liquid separation under high temperature and high pressure after charging a nickel oxide ore containing 2016/11/24· In order to recover high-quality scandium from nickel oxide ores efficiently, this method comprises: a step (S1) for feeding Ni oxide ores and sulfuric acid into a pressure vessel, and subjecting the mixture to solid-liquid separation to form a leachate and a leach residue; a step (S2) for adding a neutralizing agent to the leachate, and …

Recovery of Rare Earths and Other Valuable Metals …

2016/08/11· Duyvesteyn WPC (2012) System and Method for Recovery of Scandium Values from Scandium-Containing Ores. US patent application no. US20120207656 US patent application no. US20120207656 114. 2019/02/21· "Method and Recovery of Scandium Values from Leach Solutions". Granted in January 2019, to SCY. This patent is closely related to SX Patent #326 above, although it extends scandium-specific SX ...

Novel Flowsheet Design Patents Filed for Scandium Recovery ...

Reno, Nevada - Scandium International Mining Corp. (the "Company" or "Scandium International" or "SCY") (TSX: SCY) announces today that it has completed the filing of five patent applications with the US Patent Office that correspond to novel flowsheet designs for the recovery of scandium from laterite resource material. 2011/06/02· Metallurgical processes for scandium recovery from various resources are reviewed. Scandium is mainly recovered as by-product from residues, tailings and waste liquors in the production of other metals such as rare ...

Recovery of Scandium by Crystallization Techniques ...

2019/01/25· The current state-of-the-art in the recovery of scandium from metallurgical waste streams involves leaching to extract scandium from the waste stream, e.g., bauxite residue [13,14,15]. Solvent extraction is then employed to extract Sc from the pregnant leach solution (PLS) using an organic solvent, followed by stripping of Sc back into the … 2015/02/17· 3. Solvent extraction of scandium from leach solutions, 4. Systems and processes for recovering scandium values from laterite ores, and 5. Scandium-containing master alloys and method for making ...

Investigation of the separation of scandium and rare …

2004/08/01· A chromatographic method has been developed for separation and determination of scandium (Sc) and rare earth elements (REEs) in samples from a red mud (RM)-utilization process. Reversed-phase high ... 2017/02/13· 2. Metallurgical processes for scandium recovery from various resources 2.1. Recovery of scandium from its ores Scandium minerals with high scandium content, such as thortveitite and lolbeckite, are mainly dispersed in the

Ion exchange method for the recovery of scandium - …

1987/09/11· 4765909 Ion exchange method for separation of scandium and thorium 1988-08-23 Rourke et al. 423/21.5 4751061 Process for recovering scandium from waste material 1988-06-14 Kim et al. 423/21.5 4718996 Recovery NEWS RELEASE TSX: SCY FEBRUARY 21, 2019 NR 19-03 SCANDIUM INTERNATIONAL UPDATE ON PATENT FILINGS Reno, Nevada, February 21, 2019 – Scandium International Mining Corp. (TSX:SCY)

Liquid Extraction Procedure For The Recovery Of Scandium ...

A process for recovering the scandium present as a trace constituent in a mixture of iron, manganese and other oxides comprise bringing the scandium into solution along with much of the other base metals, reducing the dissolved iron to the ferrous state, adjusting the pH of the resulting solution to a value of about 2.0 and selectively extracting the scandium … 2019/01/25· This research presents an alternative method for scandium (Sc) recovery from impure bauxite residue solutions containing Fe(III), Al, Ca, Nd, and Y through the use of hydroxide and phosphate ...

Separation and Recovery of Scandium from Sulfate …

ABSTRACT: We report on the separation and recovery of scandium(III) from sulfate solutions using solvent extraction and a membrane transport system utilizing newly synthesized amic acid extractants. Scandium(III) was −3 N-[N 2016/06/23· A method for isolating scandium values, the method comprising: extracting scandium values from a leachate with an organic solvent, thereby obtaining a scandium-loaded organic solvent, wherein the leachate contains iron and

Liquid extraction procedure for the recovery of scandium ...

The scandium values are recovered quantitatively from the organic extractant by treating it with a dilute acid. The process effects a complete separation of the scandium from the base metals resulting in a scandium product of high 2019/02/21· February 21, 2019 — Scandium International Mining Corp. (TSX: SCY) ("Scandium International" or the "Company") is pleased to provide an update on our US Patent Office and select Foreign Patent Office filing program, securing rights to Company intellectual property in relation to the extraction and recovery of scandium values …

From trace to pure: Recovery of scandium from the …

2018/10/01· From trace to pure: Recovery of scandium from the waste acid of titanium pigment production by solvent extraction Article in Process Safety and Environmental Protection 121 · October 2018 with ... Liquid Extraction Procedure For The Recovery Of Scandium Published: Feb 6, 1990 Earliest Priority: Apr 23 1987 Family: 1 Cited Works: 4 Cited by: 14 Cites: 8 Additional Info: Cited Works Full text ...

METHOD FOR RECOVERING SCANDIUM - SUMITOMO ...

2017/01/11· The method for recovering scandium pertaining to the present invention has: a first neutralization step for passing a solution containing scandium over an ion exchange resin, adding a neutralizing age 2019/02/21· "Method and Recovery of Scandium Values from Leach Solutions". Granted in January 2019, to SCY. This patent is closely related to SX Patent #326 above, although it extends scandium-specific SX ...

Method for preparation of scandium oxide from red mud

Complete recovery of scandium oxide in the primary concentrate containing 29.70% SC 2 O 3 is 12.8%. In the known method the calcined precipitate contains only 5-20% SC 2 O 3 less than 1.5-5.9 times, and removing SC 2 O 3 A novel method for recovery of Al, Fe, V, Sc, Ti and Si from red mud was put forward. • The parameters of HCl leaching, solvent extraction, polymerization were investigated for extraction of Al, Fe, V, Sc. • The parameters of alkali

Selective separation of scandium (III) from rare earth …

1. Introduction Rare earth elements are generally composed of 17 chemically similar metallic elements, including 15 lanthanides, scandium and yttrium .As a crucial element, scandium and its compounds have been widely used in ... 1997/01/31· Recovery of scandium from magnesium, aluminium and iron scrap Article (PDF Available) in Hydrometallurgy 44(1):179-184 · January 1997 with 135 Reads How we measure 'reads'

process for recovering scandium from nickel

SCANDIUM INTERNATIONAL MINING CORP (SCY) Clean TeQ's This process is very similar to the CIP process The main differences lie in the preparation of the slurry and method for removing the gold from the leachate In a CIL process the carbon is mixed with the leachate solution not with pulp This is a much less abrasive system meaning that … A method for producing a solid scandium-containing material comprises providing an aqueous solution containing carbonate ions, carbamate ions, hydrogen carbonate (HC0 3 + ) ions, or mixtures thereof, contacting the aqueous ...

The method of separation of scandium from titanium

Feature of the proposed method of separation of scandium from titanium is that before extraction in the solution is injected hydrogen peroxide in a weight ratio with the concentration of titanium is avodat at a pH of 1.8 to 4.1. 2018/01/26· In this work, we investigated the recovery of scandium from real leachates of Greek bauxite residue. The leaching was carried out in a HNO3 solution with a liquid-to-solid ratio of 50:1. In the ...

Separation and Recovery of Scandium from Sulfate …

We report on the separation and recovery of scandium(III) from sulfate solutions using solvent extraction and a membrane transport system utilizing newly synthesized amic acid extractants. Scandium(III) was quantitatively extracted with 50 mmol dm–3 N-[N,N-di(2-ethylhexyl)aminocarbonylmethyl]glycine (D2EHAG) or N-[N,N-di(2 … 2019/02/21· Reno, Nevada, February 21, 2019 – Scandium International Mining Corp.(TSX:SCY) ("Scandium International" or the "Company") is pleased to provide an update on our US Patent Office and select Foreign Patent Office filing program, securing rights to Company intellectual property in relation to the extraction and recovery of scandium values …

Separation and Recovery of Scandium from Sulfate …

2019/12/17· 1. Introduction Recently, scandium (Sc) has been widely used in optical, electronic, and chemical industries, aerospace, nuclear technology, and other fields and its demand has continued to grow. 1−3 Demand for Sc has been expected to increase in the future because it is also used in fuel cells. 4−6 Nevertheless, Sc-rich ores are rare … The synergistic extraction of scandium(III) with a mixture of Cyanex272 and Cyanex923 in sulfuric acid medium has been investigated in this study. At low H 2 SO 4 concentration, the mixture of Cyanex272 and Cyanex923 exhibited an obvious synergistic extraction for …

EP0775753A1 - Process for recovering scandium from …

A process for recovering scandium economically with high efficiency by concentration and separation from an oxide ore containing nickel and a small amount of scandium as well as a large amount of iron and/or aluminum comprises ... Ion exchange method for the recovery of scandium Download PDF Info Publication number US4816233A US4816233A US07/095,367 US9536787A US4816233A US 4816233 A US4816233 A US 4816233A US 9536787 A divalent ...

Pilot-Plant Investigation of the Leaching Process for the ...

2002/10/10· A pilot-plant process has been developed based on an innovative laboratory-scale method for the recovery of scandium that exists in economically interesting concentrations in red mud, the main byproduct of alumina ... Scandium is an element of atomic number 21 classified in rare earth elements. Scandium is very expensive, which is used for a solid electrolyte of a fuel cell, a light source of metal halide lamp, Sc and Al alloy with high strength and so on.

JP5652503B2 - Scandium recovery method - Google …

JP5652503B2 - Scandium recovery method - Google Patents Scandium recovery method Download PDF Info Publication number JP5652503B2 JP5652503B2 JP2013100217A JP2013100217A JP5652503B2 JP 5652503 B2 ... A strategy for selective recovery of scandium, as well as the rest of the REE concentrate from the AMD solution, was successfully devised as a two-step adsorption process using the synthesized adsorbents, at pH values of 4 and