US5543031A - Method for recovering indium by ...
In order to recover indium, while preventing generation of chlorine gas, by a direct electrowinning method from a hydrochloric acid solution from which impurities have been removed by various...
KR20110003119A - Method for recycling indium - Google Patents
CONSTITUTION: An indium recovering method comprises next steps. Indium inclusion is melted by hydrochloric acid in order to manufacture indium solution(S1). Alkali is added in the indium solution...
(PDF) Methods of Indium Recovery
A direct solvent-extraction process was developed to selectively recover indium from solutions generated by reductive leaching of zinc residues.
JP3602329B2 - Method for recovering indium from indium ...
JP3602329B2 - Method for recovering indium from indium-containing material - Google Patents Method for recovering indium from indium-containing material Download PDF Info Publication number JP3602329B2. ... indium leaching obtained sulfide Prior art date 1998-03-20
JPH0860264A - Method for recovering indium by electrolytic ...
PURPOSE: To prevent generation of gaseous chlorine by recovering indium by direct electrolytic sampling from a hydrochloric acid soln. of crude zinc or zinc slag from which impurities are removed...
Recovery of indium from the etching solution of indium tin ...
Jan 18, 2016 · Methods for recovering indium from In‐containing residues can be classified into two treatment processes: the hydrometallurgical and the pyrometallurgical. Previous studies have reported various methods such as solvent extraction 7 - 10, 13, adsorption 14, ion exchange 15, chlorination 16, 17, supercritical fluids extraction 18, and roasting 19.
EP1020537B1 - Separation and concentration method for ...
EP1020537B1 - Separation and concentration method for recovering gallium and indium from solutions by jarosite precipitation - Google Patents
New technique developed to recycle indium from waste LCD ...
The LCA was undertaken to identify the environmental benefits and impacts of recovering indium using this method, in terms of the loss of (non-living) natural resources and global-warming impacts. Indium recovery from waste LCD panels was compared with incineration and use of landfills, which are the current methods of LCD waste disposal.
Recovering and casting indium - Chemistry Stack Exchange
Put the pot on the stove and heat until the indium is molten. Use a silicone stone spatula to scrape the indium off, let it harden on the spatula, then pick it off. You can also use a wet sponge as long as its the kind used for cleaning solder irons (make sure its a new …
Recovery of indium from indium tin oxide by solvent ...
Solvent extraction is a commonly used method for the purification of indium in process metallurgy particularly in zinc refineries, where indium is usually recovered from sulfate solutions ( Alfantazi and Moskalyk, 2003 ). The research in the solvent extraction of indium started in the early 1960s ( …
Efficient indium leaching and recovery from waste liquid ...
To further recovery indium from the acid solution after the microwave leaching by electrorefining, different electrolysis times (2 h, 4 h, 6 h, 8 h, 10 h), voltages (10 V, 15 V, 20 V) and currents (0.1 A, 0.3 A, 0.5A, 0.7A, 0.9A, 1A, 3A, 4A, 5A) were investigated, the optimal indium recovery yield was accomplished by 93.41% with 1A and 10V for 10h.
Recovery of indium from LCD screens of discarded cell phones
Indium is a precious metal with relatively limited natural reserves (Dodbida et al., 2012), so it can be profitable to recover it from discarded LCD screens. The objective of this study was to develop a complete process for recovering indium from LCD screens. Firstly, the screens were manually removed from cell phones.
Recovery of indium from etching wastewater using ...
This study presents supercritical carbon dioxide (scCO 2) extraction as an inherently safer and cleaner method for the recovery of indium (In) from the real etching wastewater obtained from indium tin oxide (ITO) etching process.
The Availability of Indium: The Present, Medium Term, and ...
Indium is currently produced almost solely as a byproduct of zinc smelting and refining. 1. As a byproduct, indium benefits from sharing some production costs with its associated main product. Thus, costs of producing indium as a byproduct are undoubtedly lower than if it were produced by itself. If future demand for indium exceeds the
Gallium, Germanium, Indium, Vanadium, Or Molybdenum ...
Nov 30, 2016 · Abstract: There is provided a method for recovering indium, the method being capable of recovering indium having a high purity at simple and inexpensive steps in a short time and with a high recovery. After indium containing substances, such as ITO target scraps, are crushed, the crushed substances are ground until the percentage of coarse particles having a larger particle size than a …
Characteristics of Indium Tin Oxide (ITO) Nanoparticles ...
Lift-off method for recovering indium-tin-oxide (ITO) as nanoparticles from glass substrate of thin film transistor-liquid crystal display (TFT-LCD) scraps.
Investigation of an Electrochemical Method for Separation ...
Gallium remained in solution together with a small amount of indium after the separation of copper and indium and has to be recovered by an alternative method since electrowinning from the chloride-rich acid solution was not effective.
Method for restoring the resistance of indium oxide ...
The method utilizes a recovery annealing step which returns the Indium Oxide layer to its original resistivity after a high temperature annealing step has caused the resistivity to increase.
Recovery of indium from TFT and CF glasses in LCD panel ...
Indium was efficiently recovered from color filter (CF) glass in LCD panel wastes using sub-critical water, which is only harmless water, at various temperatures and reaction time.
Application of Amalgam Metallurgy to the Extraction of Indium
In view of the greater demand for indium with the progressive development of the metal, simpler methods of recovery are necessary. The author here hopes to apply mercury in the metallurgy of indium in an effort to find a simpler method of extraction.