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    Recovery Indium Conjunction. recovery indium conjunction EP2627792A1 Method for treating a solution containing zinc The solution is routed to indium extraction, where the indium is separated from the zinc, and the zinc sulphate solution is routed to the neutral leaching stage If the concentrate contains gallium, its recovery takes place in

    Recovery of indium from indium tin oxide by solvent

    01-04-2011· From the sputtering waste indium can be recovered by dissolving it in HCl and then precipitating it with NaOH (Ryoshi et al., 2008). A few methods have been patented for recovering indium from secondary ITO waste (used LCDs). The methods of Lee et al., 2007, Chen et al., 2003 are based on leaching and precipitation.

    CN101798639A Method for recovering indium from

    The invention is characterized in that sponge indium is prepared through several steps of primary sulfuric acid leaching, zinc powder enrichment, secondary sulfuric acid leaching, iron powder...

    Recovery of indium from liquid crystal displays

    10-03-2016· Cementation is a potentially effective way to recover indium from solutions, based on the different oxidation potential of indium when compared to other elements. For this purpose, aluminum, zinc and magnesium are used to deposit indium on their surfaces ( Hsieh et al., 2009,Jiang et al., 2011 ).

    A sustainable approach to separate and recover indium and

    anhydrous indium chloride, tin tetrachloride, and SOCl 2 can be separated in a single operation. The recovery rate of InCl 3 was ca. 99.6% with a purity of ca. 99.8%, while ca. 98.0% of SnCl 4 was recovered with a purity of ca. 99.7%. Both the recovery rates

    Recovery of indium from LCD screens of discarded cell

    01-11-2015· Recovery of indium from the H 2 SO 4 solution by precipitation with NH 4 OH was most satisfactory at pH 7.4, resulting in precipitation of 99.8 wt.% of the indium. Finally, the overall mass balance of the procedure showed that for every 1000 kg of LCD screens it is possible to recover 0.2986 kg of indium, which corresponds to 0.0299 wt.% of the LCD screens.

    (PDF) Recovery of indium from indium tin oxide by solvent

    Recovery of indium from LCD screen wastes, which contain indium in the form of indium tin oxide (ITO) as the electrode material, is becoming economically and environmentally justified.

    Indium Recovery from Indium Tin Oxide, ITO, Thin Film

    Keywords: indium, recovery, chlorination, indium tin oxide (ITO), ammonium chloride 1. Introduction Indium tin oxide, ITO, is a well known transparent electrical conductor which is commonly used in flat panel display. The steady increase of the production of flat panel display causesastronger demand for raw indium.In the view

    (PDF) Recovery of indium from the etching solution of

    Indium (III) was recovered from the loaded less polar organic phase as indium (III) hydroxide (98.5%) by precipitation stripping with an aqueous NaOH solution. Indium Recovery from Aqueous

    The Availability of Indium: The Present, Medium Term, and

    zinc and other ores from which indium was recovered in 2013 was ~700 tonnes. Zinc ores accounted for ~90% of production. For reasons discussed later, we believe these estimates are well below the actual levels of mine production. Considering only zinc ores, mine production of indium was geographically concentrated in China, Peru, Canada,

    Recovery of indium from the etching solution of indium

    The etching waste solution from the indium‐consuming fabrication processes is considered as the viable resource for indium recovery. The extraction equilibrium of indium(III) from a hydrochloride acid solution using di‐(2‐ethylhexyl) phosphoric acid (D2EHPA) as an extractant and dissolved in kerosene by solvent extraction was studied.

    (PDF) Recovery of indium from the etching solution of

    The etching waste solution from the indium-consuming fabrication processes is considered as the viable resource for indium recovery. The extraction equilibrium of indium(III) from a hydrochloride

    Recovery of indium from liquid crystal displays

    recovery of secondary indium from the leaching solution, many approaches can be used, such as ion exchange resins, ionic liquids, solid separation, extractants (Hasegawa et al., 2013; Kubota et al

    Hydrometallurgical methods of indium recovery from

    Obsolete LCD and LED displays are relatively new sources of indium recovery. Depending on the origin of the LCD panels, indium content is within a range of 53–410 ppm, but it typically reaches 110–200 ppm [10]. Literature data shows that hydrometallurgical treat ment is the most-suitable and most-frequently-used method for indium recovery

    CN104651881A Method for recovering indium from

    The invention discloses a method for recovering indium from indium residues. The method is characterized by comprising the following steps of: (1) adding solid alkali for coverage to the indium residues, boiling at the temperature of 6000-8000 DEG C for 30-45 minutes, and then removing alkali residues to obtain a fusion solution for later use; (2) pouring cold water into the fusion solution so

    New process to recover indium from iron-rich solutions

    12-12-2018· SIM² KU Leuven researchers developed a new, selective method to recover indium from iron-rich solutions. This work, funded through EU METGROW+, was published as a golden open access paper in the Journal Separation and Purification Technology.(PTJ, 12/12/2018)

    A sustainable approach to separate and recover indium and

    anhydrous indium chloride, tin tetrachloride, and SOCl 2 can be separated in a single operation. The recovery rate of InCl 3 was ca. 99.6% with a purity of ca. 99.8%, while ca. 98.0% of SnCl 4 was recovered with a purity of ca. 99.7%. Both the recovery rates

    (PDF) Recovery of indium from LCD screens

    Recovery of indium from LCD screen wastes, which contain indium in the form of indium tin oxide (ITO) as the electrode material, is becoming economically and environmentally justified.

    Recovery of indium from used indium–tin oxide (ITO

    Although indium recovery from several waste/secondary resources, i.e., ITO-scrap (Hsieh et al., 2009; Li et al., 2011b; Virolainen et al., 2011), EOL LCDs (Hasegawa et al., 2013a) and etching

    A sustainable approach to separate and recover indium

    A sustainable approach to separate and recover indium and tin from spent indium–tin oxide targets†. Shuai Gu * a, Bitian Fu b, Gjergj Dodbiba a, Toyohisa Fujita a and Baizeng Fang * c a Graduate School of Engineering, The University of Tokyo, 113-8656, Japan. E-mail: [email protected] b School of Ecological and Environmental Sciences, East China

    A sustainable approach to separate and recover indium and

    under 1 Pa for 30 min, and pure indium could be selectively recovered around the condensing temperature. Yang et al.27 studied the recovery of indium using extractants cyanex 923, cyanex 272, TBP and D2EHPA, respectively in hydrochloric and sulfuric acid solution, and ca. 99 wt% of indium was recovered with a purity around 90%.

    A sustainable approach to separate and recover indium

    First published on 13th November 2017. This study proposed an innovative method to separate and recover indium and tin from spent indium–tin-oxide (ITO) targets. ITO was first dissolved using concentrated HCl and then the leaching solution was distilled to recycle HCl and crystallize indium

    (PDF) Recovery of indium from liquid crystal displays

    Indium speciation in the solid product where a complete recovery was achieved. At pH 2 and pH 3 the columns represent the percentage of indium in the metal form and in the hydroxide form

    Indium Recovery from Bearing Alloy via Pyrometallurgical

    Indium recovery is defined as 100 © (m Reactor + m Trap)/ m Total, where m Reactor denotes the mass of indium collected at the cold part of the reactor, m Trap that at glass trap and m Total is the total mass of the indium in the sample specimen. It should be noted that all the volatile indium compounds were

    Indium Recovery and Recycling from an LCD Panel

    shown. The indium recovery rate of the indium concentrated solution is 86%. The residual indium is contained in the acid recovery solution and the discharged solution. The acid recovery solution can be reused, so 3.7% contained in it is recoverable. Then overall indium recovery rate is 90%. Table 3 The material balance of indium

    Recovering Indium from the Liquid Crystal Display of

    20-02-2009· Much effort has been put in recovering and recycling indium from the discarded materials. Nowadays, about 70 pct of indium is generally recovered from ITO scrap generated during the manufacturing process of LCDs. There are several reports describing how to recover indium by a hydrometallurgical process.

    New process to recover indium from iron-rich solutions

    12-12-2018· SIM² KU Leuven researchers developed a new, selective method to recover indium from iron-rich solutions. This work, funded through EU METGROW+, was published as a golden open access paper in the Journal Separation and Purification Technology.(PTJ, 12/12/2018)

    Recovery of indium from aqueous solutions by solvent

    It was found that indium could be successfully recovered from ITO glass in the form of volatile indium chloride by heating the mixture of ITO and NH4Cl at the temperature of 400°C under inert

    Recovery of indium from the etching solution of indium

    Recovery of indium from the etching solution of indium tin oxide by solvent extraction The etching waste solution from the indium‐consuming fabrication processes is considered as the viable resource for indium recovery.

    (PDF) Recovery of indium from LCD screens

    In more recent studies, Kang et al. [7] investigated the recovery of indium from etching waste by leaching with NaOH and HCl, followed by solvent extraction with 2-ethylhexyl phosphonic acid mono

    Recovery of indium from the etching solution of indium

    The etching waste solution from the indium-consuming fabrication processes is considered as the viable resource for indium recovery. The extraction equilibrium of indium(III) from a hydrochloride acid solution using di-(2-ethylhexyl) phosphoric acid (D2EHPA) as an extractant and dissolved in kerosene by solvent extraction was studied.

    Research 294: Investigation of Indium Recovery from

    The LCD Val project involved testing of hydrometallurgical treatment processes for the recovery of indium. Subsequently, a unique methodological approach was undertaken in which a series of pre-treatment processes were developed to up-concentrate indium within the waste fraction prior to the hydrometallurgical step, thereby reducing the cost and operational aspects of the overall process.

    Recovering Indium from the Liquid Crystal Display of

    20-02-2009· Broadly speaking, indium (In) is extensively being used in the production of liquid crystal displays (LCDs). Nevertheless, LCDs, included in various types of end-of-life electronic devices (for example, discarded cellular phones), are generally discarded without recovering indium. Thus, the objective of this work is to recover indium from the LCD of the discarded cellular phone.

    Beneficiation and recovery of indium from liquid-crystal

    Beneficiation and recovery of indium from liquid-crystal-display glass by hydrometallurgy. Swain B(1), Mishra C(2), Hong HS(3), Cho SS(2). Author information: (1)Institute for Advanced Engineering, Advanced Materials & Processing Center, Yongin 449-863, Republic of Korea.

    Extraction technology for the recovery of indium from zinc

    OSTI.GOV Journal Article: Extraction technology for the recovery of indium from zinc production solutions

    New process to recover indium from iron-rich solutions

    12-12-2018· SIM² KU Leuven researchers developed a new, selective method to recover indium from iron-rich solutions. This work, funded through EU METGROW+, was published as a golden open access paper in the Journal Separation and Purification Technology.(PTJ, 12/12/2018)

    Commercial indium recovery processes development from

    15-03-2019· Commercial indium recovery processes development from various e-(industry) waste through the insightful integration of valorization processes: A perspective. Swain B(1), Lee CG(2). Author information: (1)Materials Science and Chemical Engineering Center, Institute for Advanced Engineering (IAE), Yongin-Si 449-863, Republic of Korea.

    Recovery of indium from the etching solution of indium

    The etching waste solution from the indium‐consuming fabrication processes is considered as the viable resource for indium recovery. The extraction equilibrium of indium(III) from a hydrochloride acid solution using di‐(2‐ethylhexyl) phosphoric acid (D2EHPA) as an extractant and dissolved in kerosene by solvent extraction was studied.

    Recovery of indium by acid leaching waste ITO target based

    recovered indium using TiO2 particles to absorb indium ions from solution. LIU et al [8] recovered indium using 2-ethylhexyl phosphoric acid mono ester. Overall, among the above methods, the leaching and precipitation method has a high recovery rate and high technical stability, thus it is suitable for industrial production.

    metallurgy Recovering and casting indium Chemistry

    04-02-2016· 2) How can I recovery indium that has "wetted" a stainless steel pot? Put the pot on the stove and heat until the indium is molten. Use a silicone rubber spatula to scrape the indium off, let it harden on the spatula, then pick it off.

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