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JP5425486B2 |
To provide a method for separating zinc from a galvanized steel scrap in which zinc can be efficiently removed without dissolving and sticking iron. The method for separating zinc from a galvanized steel scrap includes heating the scrap ...
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JP5428495B2 |
To provide a method for producing reduced iron using high zinc-content iron ore with which the effective utilization can be obtained. This method for producing the reduced iron using the high zinc-content iron ore is characterized in tha...
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JP5411928B2 |
A process for chlorinating ore, slag, mill scale, scrap, dust and other resources containing recoverable metals from the groups 4-6, 8-12, and 14 in the periodic table. The process comprises: a) forming a liquid fused salt melt consistin...
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JP5406630B2 |
To provide a dezincification apparatus which can extremely inexpensively and surely remove zinc, and to provide a dezincification method therefor. This dezincification apparatus includes: an induction heating container 50 which has an in...
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JP5403814B2 |
A method of recycling useful metals is provided. The method enables useful metals including indium, zinc, yttrium, europium, lanthanum, terbium, gadolinium, antimony, lead, copper, tin, and silver to be recovered from wastes, such as was...
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JP5396879B2 |
A solder recovery device includes a melter which melts solder dross stored in a melting crucible, an agitation unit which agitates the melted solder dross, so as to separate the melted solder dross up and down into an oxidized residue an...
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JP5396991B2 |
To provide a method for producing luppe using high zinc-content iron ore with which the effective utilization can be obtained. This method for producing the luppe using the high zinc-content iron ore is particularly used as the following...
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JP5397021B2 |
To provide a method for producing reduced iron by which in the case of producing the reduced iron from iron ore by using a shifting-type hearth furnace, dust containing zinc content in the iron ore with the usable concentration as a zinc...
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JP5392695B2 |
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JP5397020B2 |
To provide a method for producing reduced iron by which in the case of producing the reduced iron from iron ore by using a shifting-type hearth furnace, dust containing zinc content in the iron ore with the usable concentration as a zinc...
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JP5396000B2 |
The present invention embodies a process for extraction of nickel, cobalt, and other metals from laterite ores by heap leaching, and of the product obtained as well, characterized by the fact that it is comprised of crushing (I), agglome...
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JP5390791B2 |
To provide an exhaust gas treatment method for a rotary hearth furnace, increasing an exhaust gas flow velocity in comparison with a conventional one, and suppressing attachment of dense solid materials to a duct even when the exhaust ga...
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JP5380536B2 |
This invention relates to an improved method for processing high zinc iron ores for production of iron and steel comprising the steps of; producing agglomerate comprising a mixture of iron oxides, carbonaceous materials, and fluxes with ...
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JP5375631B2 |
To provide a method for removing a metal element from an organic phase (A) which is produced in a back extraction step constituting a solvent extraction process and contains an amine-based extractant that carries chloro complex ions of t...
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JP5374041B2 |
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JP5374040B2 |
Improved methods for treating metallurgical compositions involve reacting a metallurgical composition with an aqueous nitric acid solution. The reaction is performed at a pressure of at least about 220 psig and at a temperature of at lea...
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JP5377998B2 |
To provide an apparatus for recovering zinc with which high quality zinc having reduced chlorine content, is efficiently recovered from dust containing zinc oxide. The apparatus for recovering zinc includes; a furnace body 7, in which du...
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JP5365708B2 |
An object is to provide a hydrogen sulfide gas production plant that can recover discharged waste hydrogen sulfide gas and efficiently supply the gas to a process plant where processing is conducted by using hydrogen sulfide gas, and als...
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JP2013543052A |
The invention relates to a method for recycling dust from electric steel plants, originating from the furnaces of secondary-smelting electric steel plants, in which a portion of the dust collected after smelting in the electric furnace i...
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JP5354486B2 |
To provide an easily performable method for recovering a metal where a metal can be recovered by a simple process of a pulverization operation. Balls for pulverization, the powder of a compound composed of a metal oxide including a presc...
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JP2013234368A |
To obtain zinc in which the content of carbon is reduced, and further to obtain high purity silicon, in which the content of carbon is reduced, by a zinc reduction method using the zinc having a low carbon content.In a method for refinin...
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JP2013542321A |
Zinc and lead are usually concomitantly present in Zn—Pb ores and tailings. A novel non-polluting hydrometallurgical process for selectively leaching and recovering zinc (Zn) from a composite lead (Pb) and zinc sulphide containing mine...
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JP5336472B2 |
Treatment of residues (I) comprising zinc ferrites and lead, silver, indium, germanium and/or gallium as oxides and sulfates involves (a) roasting (I) in an oxidizing medium at high temperature to give a desulfurized residue, (b) carryin...
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JP5332806B2 |
To provide a method for recycling electric furnace dust, in which the electric furnace dust is recycled into the electric furnace by handling the electric furnace dust with a lifting-magnet crane while maximizing a recycling ratio of a t...
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JP5324544B2 |
To provide a method for treating lead slag, which can reduce the amount of drainage generated from lead slug and remove copper from the lead slag.The method for treating lead slag includes the steps of: adding a sulfuric acid, a ferric s...
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JP2013538939A |
Process for melting scrap metal in a furnace comprising the steps of feeding a charge of solid scrap metal to the furnace, supplying fuel and an oxygen-rich oxidant to the furnace and combusting the fuel with the oxidant to generate heat...
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JP5317273B2 |
To provide an extracting agent for highly selectively recovering a noble metal, such as gold, palladium, platinum, especially gold, contained in the waste electronic materials or the waste electronic device, and the extracting agent for ...
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JP5312845B2 |
To provide a zinc recovery device which can efficiently recover zinc from zinc-containing ash. The zinc recovery device 5A by which zinc is recovered from zinc-containing flying ash, is provided with: a melting-reducing tank 19 storing f...
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JP5303779B2 |
To provide a more efficient method and specific condition for increasing an enrichment rate of zinc and a collection rate of zinc, in a process of collecting the zinc by reducing a by-product containing iron and zinc such as dust and slu...
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JP5303786B2 |
To provide a concrete method and suitable conditions for effectively utilizing Fe content while suppressing the content of accessory Zn with respect to a wet type magnetic adhesion sorting technique for effectively utilizing the Fe conte...
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JP5288778B2 |
To provide a method for obtaining a solid component which has less water content, low chlorine concentration, and contains lead and zinc from th heavy metal-containing powder containing calcium, lead, zinc, copper and chlorine. The metho...
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JP5281779B2 |
To provide a method for producing an electrolytic solution of zinc, which uses a zinc-containing substance having a high halogen content as a raw material, can easily remove the halogen with high productivity without using a dry process ...
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JP5260065B2 |
To provide an apparatus for recovering vaporized zinc profitable to shorten an operating time without needing to be a high vacuum state from the atmospheric state of a scrap-accommodating chamber for accommodating the scrap. The vaporize...
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JP5224490B2 |
A method of processing flue dust that contains one or more compounds from a first group of zinc, lead and cadmium compounds, and contains iron compounds, involves heating the flue dust to cause a substantial portion of one or more of the...
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JP5206662B2 |
To recover manganese oxide from a dry cell by a low-cost method. The method for recovering manganese oxide from the dry cell includes: a crushing/sieving treatment process of crushing and then sieving the dry cell and obtaining a crushed...
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JP5200422B2 |
To stably recover secondary dust having high zinc concentration by exactly controlling the zinc concentration in the secondary dust, when molten iron is produced while charging furnace-produced dust in a recycling manner as dust agglomer...
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JP5201556B2 |
To clean a contaminated soil efficiently and stably. This method of cleaning a contaminated soil comprises the following processes. First, a seedling nursing process is to fill a large number of cells, fitted to a tray body of a plug tra...
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JP5192000B2 |
Provided are a method of recovering valuable metals from IZO scrap, wherein valuable metals are recovered as hydroxides of indium and zinc by using an insoluble electrode as an anode or a cathode and an IZO scrap as the other cathode or ...
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JP2013076149A |
To provide a recycling system in which work burden on a rotary kiln is reduced and furthermore, reduced iron and zinc can be effectively taken out from soot and dust.The recycling system 10 includes: an electric furnace 12 which melts sc...
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JP5189873B2 |
To provide a reduction treatment apparatus which can prevent the decrease of the total zinc amount in zinc refinement, and to provide a reduction treatment method therefor. The reduction treatment apparatus 1 includes: a rotary kiln 2 wh...
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JP5188118B2 |
To provide a flotation method with which floatability of pyrite for sulfide minerals containing valuable metals contained in an ore is restrained, so that a high-grade purified ore can be efficiently recovered. The flotation method with ...
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JP5183638B2 |
This invention relates to a single-step pyrometallurgical process for the recovery of non-ferrous metals from zinc bearing residues, in particular from by-products of the zinc and lead industry such as goethite and jarosite. A process fo...
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JP5176053B2 |
To provide a wet treatment method for zinc leaching residue by which copper, zinc and rare metal such as indium can efficiently be recovered from secondary leaching residue with acid in the wet treatment for the zinc leaching residue obt...
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JP5169445B2 |
To provide an operating method by which, in the operation of a slag cleaning furnace in which zinc and lead are separated from slag produced from a smelting furnace in zinc and/or lead smelting, when the operation of the slag cleaning fu...
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JP5168992B2 |
To provide a method for easily and efficiently treating iron precipitate produced in a process of refining nickel, while solving problems originating in an influence of chlorine contained in the iron precipitate and the properties of the...
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JP5172061B2 |
A bio-leaching method is provided for recovering metal from a metal containing ore. The ore is subjected to contact with a microorganism selective to the oxidation of sulfur. A sulfur containing compound is mixed with the microorganism b...
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JP5167608B2 |
To provide a method for surely dezincifying a zinc-containing dust without needing pretreatment, when obtaining a sintered ore by using the zinc-containing dust and a sintering raw material. This dust-sintering method comprises: a first ...
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JP5167586B2 |
To provide a method for utilizing zinc-containing iron scraps by which, when utilizing the zinc-containing iron scraps as an iron source in an iron manufacturing process, zinc can be removed from the zinc-containing iron scraps by a simp...
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JP2013044045A |
To provide a method and system for recovering valuable metals of waste catalysts/waste adsorbents, efficiently recovering valuable metals from waste catalysts used in petroleum refining process.The method for recovering valuable metals o...
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JP5149163B2 |
The present invention is a method of recovering valuable metals from a quantity of furnace dust consisting the following steps. A first leaching step wherein the furnace dust is leached at atmospheric pressure in a first leaching solutio...
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