Contact Us

The method for extracting scandium from solutions

The method for extracting scandium from solutions for industrial raw materials processing, including extraction of scandium from solutions of phosphate sorbents, desorption of scandium carbonate solution, acidification of the eluate, the precipitation of low-solubility compounds of scandium, filtering and calcining precipitation with getting

The method of extraction of scandium in the

The method for extracting scandium from solutions for industrial raw materials processing // 2176680. The invention relates to ferrous metallurgy, in particular, to the extraction and concentration of scandium from multicomponent solutions for the processing of various industrial raw materials, mainly unprocessed red mud from alumina production

Scandium recovery method SUMITOMO METAL

(11) The present invention also provides the method of recovering scandium according to (10), comprising: an extraction step of mixing the scandium eluent with the extracting agent to allow separation into a post-extraction organic solvent containing extracted scandium and a raffinate liquid, the extracting agent being an organic solvent; a

extraction of scandium Chalk & Cork

The method of separation of scandium from titanium. A lot of researches have been made on the extracting and separating scandium from the leach liquor of different raw ores, including solvent extraction, ion exchange, liquid membrane, adsorption and coprecipitation and so on,,,, .Among of them, solvent extraction is one of the most

Rio Tinto reveals breakthrough scandium extraction

2021-1-26  Researchers at the Rio Tinto Fer et Titane (RTFT) research and development centre developed the method last year, and have since been extracting high purity scandium oxide from by-products in the

(PDF) Extraction of scandium from scandium-rich

Beneficiation, hydrometallurgy, precipitation method, extraction method, and ion exchange method are the main process of recovering scandium from primary ores, slag, and waste liquid [8] [9][10

Extraction of scandium from scandium-rich material

2018-3-1  Scandium was selectively recovered from scandium-rich material in H 3 PO 4 medium.. Solvent extraction of Sc 3 + was improved in H 3 PO 4 than that in other acidic medium.. 94% Sc 2 O 3 was leached from Sc-rich material and 98% Sc 3 + was extracted from leachate.. Separation coefficient of Sc and Fe was 2703 in H 3 PO 4 medium by using P204.

METHOD FOR SEPARATING AND REFINING

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

US9481638B2 Scandium extraction method Google

Provided is a method for selectively extracting and inexpensively recovering scandium from an acidic solution containing calcium, magnesium, and scandium. The scandium extraction method according to the present invention involves subjecting an acidic solution containing calcium, magnesium, and scandium to solvent extraction using an extraction agent consisting of an amide derivative

EP2712940A4 Scandium extraction method Google

EP2712940A4 EP13761717.1A EP13761717A EP2712940A4 EP 2712940 A4 EP2712940 A4 EP 2712940A4 EP 13761717 A EP13761717 A EP 13761717A EP 2712940 A4 EP2712940 A4 EP 2712940A4 Authority EP European Patent Office Prior art keywords scandium extraction scandium extraction Prior art date 2012-03-13 Legal status (The legal status is an assumption and is not a legal

extraction of scandium Chalk & Cork

The method of separation of scandium from titanium. A lot of researches have been made on the extracting and separating scandium from the leach liquor of different raw ores, including solvent extraction, ion exchange, liquid membrane, adsorption and coprecipitation and so on,,,, .Among of them, solvent extraction is one of the most

Liquid Extraction Procedure For The Recovery Of

[00042] The process of this invention affords a recyclable method for extracting scandium from low level sources containing large quantities of iron and other metals. It produces process streams containing scandium essentially free of iron and manganese and in concentrations which make feasible the production of scandium oxide by known procedures.

(PDF) Liquid-liquid extraction of scandium with

method using selective extracting agents [10]. Ion. Nowadays 80% of scandium in China is obtained from titanium pigments production waste through a complex purification process. The study

Experimental Study on Extracting Scandium from HCl

Solvent extraction experiment of Sc was investigated.The extraction system consisted of 25% TBP+60% sulfonated kerosene +15% reforming agents. 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

Why Scandium Solvent Extraction Is Better Than

2021-1-21  The traditional method for scandium recovery from a nickel laterite involves precipitation of scandium with an iron-bearing residue from high pressure acid leach solutions at about pH 4. This is often conducted in two stages. The first stage at a slightly lower pH will be higher in iron and lower in scandium than the second stage precipitate.

US Patent for Method of refining of scandium oxide

A method of selectively removing impurities from a scandium-containing feed solution includes contacting an aqueous scandium-containing solution with an organic solvent stream containing an extractant, thereby forming a loaded organic solvent stream containing the impurity or impurities while leaving the scandium in the raffinate. The aqueous stream containing the scandium is washed, diluted

Metallurgical processes for scandium recovery from various

2017-2-13  Scandium is often enriched in slags, residues, tailings and waste liquors, and primarily produced as a byproduct during processing of various ores. Precipitation of insoluble scandium compounds from scandium-containing solutions is the easiest method to

Separation and recovery of iron and scandium from

2020-12-1  In this study, a new method was developed for selective separation of iron and scandium in acid leachate of red mud using D201 resin. Theoretical calculations indicate that the ferric species mainly exists as FeCl 3 or FeCl 4 − at chloride concentration above 6.65 mol/L, while scandium still exists as ScCl 2 +,making it possible to

白云鄂博稀土尾矿中钪的浸出方法研究 中国学术期刊网络

Abstract】 The process of extracting scandium from Bayan Obo tailings was studied by investigating the leaching rate of scandium with different reagents and in different conditions. It is aimed at finding an optimal leaching method to achieve the extraction of scandium from Bayan Obo mine tailings and comprehensive utilization of resources.

Facts About Scandium Live Science

Scandium is a silvery metal that is soft and has a density of about three times that of water. (such as difficulty in extracting and in Tack's patent described a method for using aluminum

Liquid Extraction Procedure For The Recovery Of

[00042] The process of this invention affords a recyclable method for extracting scandium from low level sources containing large quantities of iron and other metals. It produces process streams containing scandium essentially free of iron and manganese and in concentrations which make feasible the production of scandium oxide by known procedures.

Experimental Study on Extracting Scandium from HCl

Solvent extraction experiment of Sc was investigated.The extraction system consisted of 25% TBP+60% sulfonated kerosene +15% reforming agents. 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

Why Scandium Solvent Extraction Is Better Than

2021-1-21  The traditional method for scandium recovery from a nickel laterite involves precipitation of scandium with an iron-bearing residue from high pressure acid leach solutions at about pH 4. This is often conducted in two stages. The first stage at a slightly lower pH will be higher in iron and lower in scandium than the second stage precipitate.

HYDROMETALLURGICAL EXTRACTION OF SCANDIUM

2015-10-19  After obtaining the scandium enriched precipitate, the sulphuric acid leaching experiments showed that 98% of scandium can be extracted into the leach solution and it can further be recovered by solvent extraction or ion exchange method. Introduction Scandium being one of the rare earth elements has lack of affinity for the common

Scandium recovery from slags after oxidized nickel ore

2019-1-29  The hydrometallurgical method has been selected as the primary for scandium extraction. Different reagents for leaching of scandium, such as sulfuric acid, various carbonate salts and fluorides, have been tested. Sulfuric acid has been recognized as an optimal leaching reagent.

Metallurgical processes for scandium recovery from various

2017-2-13  Scandium is often enriched in slags, residues, tailings and waste liquors, and primarily produced as a byproduct during processing of various ores. Precipitation of insoluble scandium compounds from scandium-containing solutions is the easiest method to

Separation and Recovery of Scandium from Sulfate

2020-5-5  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

one method of extracting metal from the earth

Preferably, the metal is an actinide or a lanthanide. Extraction of the metal from its ore involves reduction of the metal ions. The rock is then crushed by powerful machinery. The price of rhodium also reflects on this, because it is difficult to extract rhodium, and it is very rare, the price of rhodium goes high cause of these reasons too. Ore Extraction. They support more than $329 billion

Sc Scandium

2006-6-28  Sc Scandium Introduction Scandium belongs to group 3 of the periodic table, along with Y, La and Ac. The element has an atomic number of 21, an atomic mass of 45, one oxidation state (+3) and one naturally occurring isotope (45Sc). Its geochemistry is quite distinct from the heavier group 3 members. Scandium has a dispersed lithophile behaviour

one method of extracting metal from the earth

Using gravity and water to separate the dense gold from the other materials that surround it, this is the most common gold mining category for amateur gold hunters. Because these elements are so similar to each other, the process of separating them is time consuming, expensive, and dangerous. Other important uranium producing countries in excess of 1,000 tonnes per year were Namibia, Niger