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JP2005230655A |
To provide a dust treatment method which recovers a useful component from dust by a single process and enables thus recovered component to be effectively utilized as a non-ferrous smelting raw material, a fertilizer raw material, or a ha...
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JP2005213527A |
To provide a method for obtaining zinc hydroxide whose chlorine content is reduced to such a degree that it can be used as a resource recovery raw material, from gas or molten fly ash generated in a step of heat-treating waste.This zinc ...
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JP2005194596A |
To provide a method for recovering metals capable of easily and surely decomposing and removing plastics or other organic substances, which are avoidance substances in refining and smelting steps in the process of recovering or recycling...
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JP2005177757A |
To provide a treatment method of recovering calcium as a hydroxide and separating and recovering copper, zinc and lead from calcium-and heavy metal-containing matter.The method comprises the steps of :(A) obtaining solid part containing ...
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JP2005177559A |
To separate and recover lead from an insoluble residue obtained by washing gas generated when waste containing lead, zinc, sulfur, and chlorine is treated with a reductive heat treatment furnace.Minerals are removed by solid-liquid separ...
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JP2005149889A |
To provide a method for recovering precious metal when Li ion secondary battery, Ni-H secondary battery and NiCd secondary battery are in a mixed state.In the method for recovering the metal by having ashes generated containing metal and...
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JP2005515302A |
A method for the separation of zinc and a second metal which does not form an anionic complex in the presence of chloride ions, zinc and the second metal being present in an effluent in the form of ZnCl2 and a second metal chloride. The ...
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JP3640288B2 |
To provide a treating method of fly ash capable of simply separating heavy metals such as lead and zinc in a stable form from incineration fly ash or molten fly ash containing calcium. The treating method of the fly ash comprises of a 1s...
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JP2005068535A |
To provide a method of recovering lead and/or zinc from lead and/or zinc-containing gas or flying ash without generating waste water.A suspension containing an insoluble lead and/or zinc compound is obtained from a lead and/or zinc-conta...
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JP3627641B2 |
To provide a method for separating and removing zinc from an aqueous solution of nickel sulfate containing cobalt and zinc in which, by improving the conventional method where hydrogen sulfide is blown into the aqueous solution to select...
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JP3625270B2 |
To provide a treating method for wastes such as dust, which lessens a waste liquid treating load by reducing the volume of the waste liquid over the entire part of a treating system. The treating method having a process step of desalting...
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JP2005046666A |
To provide a method for easily and efficiently recovering cadmium from cadmium-containing soil at a low cost.After a plant having a cadmium absorbing capacity is cultivated in cadmium-containing soil, the plant is supplied into a calcina...
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JP3620640B2 |
To efficiently recover Zn from mine water contg. Zn of low concn. and making it into a product. This is a method for recovering zinc sulfate from mine water in which alkali is added to a soln. contg. Zn, Fe and Mn, Fe is precipitated, th...
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JP3619069B2 |
To provide a fly ash recycling treatment for highly efficiently recovering lead and zinc contained in fly ashes and recovering valuable materials other than lead and zinc with high purity and at high yield without discharging wastes. Thi...
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JP2005502787A |
The invention relates to a method for obtaining metals from a cobalt and/or nickel arsenic sulfide ore or ore concentrate and/or a cobalt and/or nickel sulfide ore or ore concentrate, according to which the cobalt and/or nickel arsenic s...
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JP2005501973A |
A process for the recovery of zinc metal from a zinc mineral includes the steps of leaching the zinc mineral in a solution including a halide species formed from two or more different halides, to leach the zinc into the solution. The zin...
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JP3609422B2 |
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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JP3609421B2 |
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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JP2005002426A |
To provide a method for recovering a low melting point metal by using the difference of a melting point, which recovers the low melting point metal of a useful metal like zinc as dust containing much metal by using the difference of the ...
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JP3598324B2 |
To provide a method for recovering zinc and iron by treating a zinc and iron-containing acid spent solution exhausted in a galvanizing stage with high efficiency so as to reduce the amount of sludge to be generated. In the method for tre...
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JP2004307965A |
To provide a method for removing arsenic and antimony by separation from dust containing zinc, lead, arsenic, antimony and other metals by which zinc and lead which have reduced contents of arsenic and antimony and suitably returned to a...
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JP3584492B2 |
An annular exhaust gas passage 2 and an airtight retention member 3 for keeping the inside of a crucible induction furnace 1 airtight are installed on the top of the furnace 1, and an exhaust system under atmospheric pressure is connecte...
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JP2004300459A |
To provide a method for safely removing harmful components contained in a detoxifying agent which has treated a metal hydride gas or an organometallic gas, further recovering the metallic component of a main agent in the detoxifying agen...
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JP2004294111A |
To reduce labor and costs for predicting concentration rate by precisely predicting the concentration rate when cooling the vapor of metal zinc, or the like, for collecting as fluid zinc.An ordinary differential equation is calculated wi...
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JP2004294116A |
To reduce labor and costs for predicting condensation rate by precisely predicting the condensation rate when cooling vapor in metal zinc, or the like, for collecting as liquid zinc.The method for analyzing metal condensation rate when c...
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JP2004531643A |
The invention relates to a method for removing calcium from a sulfate solution in the zinc production process. Calcium is removed as an anhydrate from the raw solution coming from concentrate or ore leaching before the solution purificat...
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JP3574928B2 |
To provide a method for treating fly ashes from an incinerator and a melting furnace and capable of separating heavy metals, which are contained in the fly ashes, in form of stable substances. While 2 liter of distilled water being poure...
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JP3574192B2 |
The invention relates to a method and furnace construction to be used in producing easily volatile metals from their sulfides. The furnace construction comprises two closely connected furnaces, a reduction furnace and a converter, which ...
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JP3569996B2 |
PURPOSE: To prevent the deterioration of gasifying rate of coke breeze by treating Zn.Pb material, in a burner for flash smelting. CONSTITUTION: A burner for flash smelting is constituted of an upper combustion cylinder 4, provided with ...
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JP2004526057A |
The invention relates to a method for the leaching of oxidized ores and in particular zinc ores. The ore, wherein the valuable metals are at least partially in silicate form, are routed to an acidic leaching stage in conditions where the...
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JP3553120B2 |
PURPOSE: To provide a zinc treating device having a continuous treating type heating furnace easy for construction and excellent in heat efficiency and capable of recovering the zinc without exhibiting a corrosive property. CONSTITUTION:...
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JP2004211193A |
To provide iron oxide reduction equipment which simultaneously performs the treatment of organic wastes and the reduction of the iron oxide of a zinc-containing dust and forms a fuel in the apparatus.A mixed raw material 30 is continuous...
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JP2004521305A |
The present invention relates to an arrangement and method that help to reduce the build-up formed on the grate of a fluidized-bed furnace in the roasting of fine-grained material such as concentrate. The concentrate is fed into the roas...
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JP3539334B2 |
To recover zinc while sufficiently raising zinc concn. without executing pre-treatment of agglomeration or the like, by adding pre-melt slag produced in an iron-making process in a specified range when the zinc is separatively recovered ...
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JP3536901B2 |
To efficiently recover valuable metals from fly ash at a low cost, to reduce the generation of waste liq. when the valuable metals are recovered from fly ash and the load on waste water treatment and to recover a high- quality gypsum fro...
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JP3535381B2 |
To provide a method for recovering a valuable metal having good quality while suppressing the generation of hazardous materials and preventing oxidation by using copper slag and industrial waste as raw materials and simultaneously treati...
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JP3532741B2 |
To provide a method wherein fly ash is stabilized by removing zinc and lead contained in fly ash, and the removed zinc and lead is recovered. After the acid chemical 3 is added to fly ash 1 containing heavy metal such as zinc and lead to...
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JP3533574B2 |
PCT No. PCT/FR91/00776 Sec. 371 Date Sep. 17, 1993 Sec. 102(e) Date Sep. 17, 1993 PCT Filed Oct. 3, 1991 PCT Pub. No. WO92/06222 PCT Pub. Date Apr. 16, 1992.The invention relates to the field of metallurgy and to a method and a device fo...
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JP2004514057A |
This invention relates to a method for stabilizing a fluidized bed used in roasting by adjusting the oxygen content of the roasting gas in the bed. The fine-grained material for roasting is fed into the furnace above the fluidized bed an...
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JP2004514058A |
The present invention relates to method, which helps to reduce and remove the build-up forming on the grate of a fluidized-bed furnace in the roasting of fine-grained material such as concentrate. The concentrate is fed into the roaster ...
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JP2004124177A |
To provide a method for recycling the dust of an electric furnace, which recycles the dust of the electric furnace to turn it into molten steel and slag without discarding the dust of the electric furnace, and concentrates volatile compo...
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JPWO2002050320A1 |
In the method of purifying zinc by guiding zinc containing impurities to a rectification column having a plurality of purification stages, impurities are removed by distilling zinc while keeping the inside of the rectification column und...
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JP2004107748A |
To provide a method for treating zinc leaching residue with which metallic iron and metallic zinc can quickly be recovered from the zinc leaching residue at a high yield.In the method for treating the zinc leaching residue, with which gr...
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JP2004076090A |
To provide a method for removing/separating valuable resources such as a heavy metal and a heavy metal compound from a high temperature gas containing a vapor of a heavy metal and a heavy metal compound, to recover/recycle them, while mi...
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JP2004076089A |
To provide a method for removing/separating valuable resources such as a heavy metal and a heavy metal compound from a high temperature gas containing a vapor of a heavy metal and a heavy metal compound, to recover/recycle them, while mi...
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JP2004507624A |
A processs for the recovery of zinc from a zinc sulphide ore or concentrate comprises the steps of subjecting the concentrate to pressure leaching with an acidic solution containing at least about 15 g/L iron in solution to produce a zin...
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JP2004500486A |
In a method for processing dusts or dust mixtures containing alkalis and heavy metals, such as, e.g., steelworks dusts, fine ores or blast furnace dusts, the dusts are charged onto or into, in particular top-blown on or blown into, a bat...
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JP3480021B2 |
PURPOSE: To easily and efficiently dehydrate a cake with an inexpensive neutralizer, to obtain the dehydrated cake low in sulfate ion, high in zinc and low in moisture content and to recover zinc. CONSTITUTION: The dust 2 contg. zinc and...
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JP2003342648A |
To provide a process for operating a rotary kiln used for reduction roasting which improves volatilization rate of zinc from iron and steel dust having a high zinc content and a low iron content. In the operation process, reduction roast...
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JP2003342649A |
To provide a process for operating a rotary kiln used for reduction roasting iron and steel dust which improves volatilization rate of zinc without raising the temperature from an ordinary temperature during reduction roasting. In the op...
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