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JP4420216B2 |
To separate and recover lead from a gas produced in the treatment of wastes containing Pb, Zn, S, and Cl in a reducing heat treatment furnace. The method for treating a cleaning liquid containing an insoluble residue obtained by cleaning...
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JP4417152B2 |
To provide a treatment method for fly ash where heavy metals can be recovered from fly ash generated at the time of incinerating waste such as shredder dust at a high recovery rate, and can be recycled for a refining raw material or the ...
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JP2010504269A |
The invention relates to the manufacture of high purity silicon as a base material for the production of e.g. crystalline silicon solar cells. SiHCl3 is converted to Si metal by contacting gaseous SiHCl3 with liquid Zn, thereby obtaining...
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JP4399567B2 |
To provide a waste cleaning method in wet type zinc refinement wherein copper arsenide-containing residue produced in a treatment process for Zn residue can be effectively utilized. In the waste cleaning method in wet type zinc refinemen...
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JP4398021B2 |
To provide a method for conveniently recovering valuable metals usable as the material for a hydrogen storage alloy from an alkaline secondary battery with the hydrogen storage alloy as a negative-electrode active material. Valuable meta...
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JP2010001524A |
To provide a method of making zinc content in dust in iron manufacturing low, in which processes are made efficient while using a magnetic separation method, and which is economically excellent.The method for making the zinc content in t...
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JP2009544846A |
Disclosed is a method for reducing metalliferous material to a reduction product. Also disclosed is an apparatus for reducing metalliferous material to a reduction product.
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JP2009293090A |
To provide a lead splash condenser facility that can enhance the efficiency of a condenser, which is the efficiency in collecting zinc, while inhibiting the space from being blocked and splashed lead from being carried to the outside of ...
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JP4386469B2 |
A recycling process for zinc-rich solid waste containing zinc oxide, Cu oxides and impurities normally present in brass, in which a mixture is formed containing the waste with a finely divided solid reducing agent and a binder, and the m...
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JP2009281687A |
To provide a method and a device for recovering valuables from exhaust gas of a heating furnace containing the valuables which do not oxidize valuable metal because of the treatment the exhaust gas emitted from the heating furnace such a...
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JP4376918B2 |
The invention provides an alloy solution in which a rare earth metal keeping over 10 minutes above 873K is added in the vacuum below 100Pa or in an inert gas so that concentration can reach 0.01 to 1% by mass, and in which foaming of Ar,...
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JP4365124B2 |
To provide a leaching method which is easily incorporated in an existing zinc smelting system, has a high leaching rate without needing a long time for leaching soluble substances from a raw material, and reduces costs of the facility an...
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JP2009256741A |
To provide a technique for efficiently recovering a large amount of various valuable metals from waste batteries by a dry process.The method comprises separating and recovering the specific metal by charging and loading metal-containing ...
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JP4359090B2 |
To provide a means capable of obtaining raw materials of zinc articles and raw metals from zinc-containing dust at a low cost in fewer treating steps. The zinc-containing dust generated from a reducing furnace such as a rotary hearth typ...
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JP2009242934A |
To provide a method for charging raw material into a top-blowing type sintering machine, in which the raw material is charged through a hopper to form an ore layer on a fire-grate in a Dwight-Lloyd system top-blowing type sintering machi...
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JP2009242850A |
To provide a method capable of treating lead in which all are performed using a wet process.The method for leaching lead slag is a method for removing at least copper and zinc in a lead slag which is a smelting intermediate product of no...
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JP4350262B2 |
To provide a method for treating a residue capable of significantly decreasing impurities in a fluorinated calcium residue obtained by reacting a dehalogenized filtrate containing fluorine with a dechlorinated water containing calcium. T...
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JP2009221491A |
To provide a method for sintering a raw sulfide material containing a raw oxide material, which can acquire adequate productivity in a production of a sintered lump and enhance such a quality that the sintered lump contains less remainin...
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JP2009209388A |
To provide a slag-fuming method where, in a slag-fuming method in which, while charging slag containing zinc, lead, arsenic and a halogen group element produced from a refining furnace in zinc and/or lead refining, and a copper source in...
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JP2009209389A |
To provide a slag-fuming method where, when a fuming furnace having an electric furnace type fusion section is used, the reduction in the temperature of a fused body accompanying the charge of a copper source to the fusion section is sup...
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JP4328256B2 |
To recover zinc-containing dust in exhaust gas of a rotary hearth type reduction furnace reducing a mixture of iron oxide particles containing zinc and particles mainly composed of carbon in a high quality state, and to miniaturize an ex...
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JP2009179841A |
To provide a method for treating molten fly ash, which can promote dechlorination and the elution of zinc while inhibiting the elution of copper.In a treatment process of dechlorinating a molten fly ash containing a valuable metal compon...
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JP2009179824A |
To provide a method for collecting zinc in an iron-making dust, which includes more efficient steps and is more economical than a conventional wet method.This collecting method includes a zinc elution step, a solid-liquid separation step...
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JP2009167469A |
To provide a method for easily and efficiently treating copper-containing dross generated in a refining furnace process.When slag generated in a blast furnace is, after the coarse separation of copper-containing coarse lead and furnace i...
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JP4299548B2 |
To provide a technique for reducing the metal and removing alkali metal, halogen elements and the other impurities by using the powder of metal oxide as the raw material in a rotary hearth type reducing furnace, and to provide a techniqu...
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JP4295557B2 |
To provide a method for producing a stainless steel with which the decrease of Cr reducing energy and the increase of Cr yield into molten steel can be obtained when waste of dust etc., developed in a stainless steel producing process is...
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JP4295193B2 |
To provide a device for recovering zinc from hot dip galvanizing bath floating dross capable of efficiently recovering molten zinc contained in floating dross scooped from the surface of a hot dip galvanizing bath, and preventing degrada...
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JP2009144213A |
To provide a method achieving the suppression of the growth of depositions to the inner wall of a rotary kiln while depending on the content of a water content in a zinc oxide cake.Regarding the method for manufacturing a zinc oxide calc...
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JP4279964B2 |
To perform stable continuous operation, in treatment for recovering Zn from mine water, e.g., from a mine by solvent extraction, by removing Fe accumulated in the solvent by striping. From an organic phase in which Zn is extracted from Z...
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JP2009127064A |
To provide a reduction treatment apparatus and a reduction treatment method which can reduce treatment cost.At least one of sludge, oil spot, tree waste, fiber waste, rubber waste, and animal and plant residues as the waste material, whi...
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JP4277108B2 |
To reduce recovery cost of useful heavy metals while lightening the excessive treatment burden due to a flux component, which is a large quantity of calcium oxide, or the like, contained in fly ash together with the useful heavy metals a...
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JP4271196B2 |
To provide a method for recovering a valuable metal, which lowers the chlorine content to 2 mass% or below but prevents the valuable metal from being eluted into a washing liquid by dechlorination-washing fly ash containing the valuable ...
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JP4274069B2 |
To provide a method which provides dust containing zinc and lead and having low arsenic and antimony contents and slag stably satisfying soil environmental standards, and realizes reutilization of a copper alloy and a mat including iron,...
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JP4270235B2 |
To provide a treating method of fly ash which is enhanced in handlability, carrying efficiency, and the like by preliminarily pelletizing a fly ash to pellets easy to crack and suitable for slurrying when reutilizing the fly ash as a sme...
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JP2009079303A |
To provide a manufacturing method of stainless steel capable of decreasing reduction energy of Cr and increasing the yield of Cr into molten steel, when reutilizing a waste such as dust generated in a stainless steel manufacturing proces...
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JP4245351B2 |
A method of producing a nickel base alloy includes casting the alloy within a casting mold and subsequently annealing and overaging the ingot at at least 1200°F (649°C) for at least 10 hours. The ingot is electroslag remelted at a melt...
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JP2009052141A |
To provide a method for reducing an electric furnace dust, comprising compressing molding a powdery mixture of an electric furnace dust, produced in an electric furnace for steelmaking, with a carbon material to prepare a briquette which...
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JP4236980B2 |
To provide a method and a device for processing iron-making wastes for separately collecting volatile harmful substances (Cl, Na, K and the like) and zinc oxide (ZnO) in the wastes by performing heat-reduction of the iron-making wastes i...
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JP4235094B2 |
To provide a method for treating metal mine drainage and a method for collecting valuable metal. In the method for treating the metal mine drainage, after oxidizing a part of divalent iron ions in the acidic metal mine drainage containin...
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JP2009041051A |
To provide a slag-fuming method which can yield a dust that contains zinc, lead and little amount of arsenic, antimony and a halogen group element, and a slag that stably satisfies a standard for a soil environment at a high volatilizati...
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JP4227854B2 |
To provide a melting and removing device for melting furnace deposits removing the melt deposits depositing on the inner wall face of a melting furnace by improving operation efficiency of a recovery device for valuable metal. This melti...
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JP4212493B2 |
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JP4206472B2 |
To provide a method for controlling the manganese concentration of an electrolyte in zinc hydrometallurgy in a preferable range. The anode scales containing manganese dioxide by-produced in electrowinning is repeatedly leached to oxidize...
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JP2008302356A |
To provide a method of biotreating a solid material to remove an undesired compound using a nonstirred surface bioreactor.The surface of a plurality of coarse substrates is coated with a solid material to be biotreated to form a pluralit...
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JP2008545888A |
The invention relates to the separation of metals in Fe-bearing zinc leaching residues, in particular neutral and weak acid leach residues. The process comprises the steps of: preparing agglomerates containing, besides the Zn leaching re...
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JP2008291331A |
To manufacture a dust aggromerate, which is hardly pulverized in a furnace and has high strength, by agglomerating zinc-containing dust to be generated in a vertical scrap melting furnace.The method for manufacturing the zinc-containing ...
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JP2008291333A |
To stably recover secondary dust of high zinc concentration and also, reduce the producing amount of the dust when molten iron is produced while recyclingly charging a furnace-produced dust as dust-agglomerate in a vertical scrap-melting...
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JP2008291342A |
To provide a high-frequency induction heating type device for recovering reduced iron, which can simply recycle iron oxides and zinc contained in the electric furnace dust which is produced in steelmakers and the like, and now is dispose...
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JP2008542549A |
The invention relates to a method for reducing and/or refining a metal-containing slag. The aim of the invention is to improve reduction of the slag. For this purpose, calcium carbide (CaC2) is added to the slag as the reducing agent.
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JP4180655B2 |
A process for the recovery of nickel and/or cobalt values from a concentrate containing nickel or cobalt hydroxide comprises the steps of subjecting the concentrate to a leaching stage with an ammonium solution to produce a leach solutio...
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