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Matches 551 - 600 out of 1,241

Document Document Title
JP3640288
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...  
JP2005021841
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 type...  
JP2005002426
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 ...  
JP3619069
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...  
JP2004307965
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...  
JP2004300459
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...  
JP2004294111
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...  
JP2004292901
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...  
JP2004294116
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...  
JP2004283762
To prevent secondary contamination by simply treating flying ash comprising various components containing valuable metals, and also to recover the valuable metals comprised in the flying ash.A base such as quicklime, slaked lime, calcium...  
JP2004232062
To provide a method for collecting crude zinc oxide from raw material containing zinc in which crude zinc oxide is collected as fly ash by adding carbon reducing material to the raw material containing zinc consisting of zinc-containing ...  
JP2004225104
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...  
JP2004211193
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...  
JP2004202488
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 containing...  
JP3574928
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...  
JP2004188269
To provide a method of treating a liquid waste containing several metals and a method of recovering valuable metals.This method of treating the liquid waste containing several metals in the first reaction tank performs a step to supply t...  
JP3569996
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 ...  
JP2004156135
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...  
JP3553120
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:...  
JP2004131755
To provide a recycling method by which smoke dust is utilized as the raw material for iron making without subjecting the same to reclaiming treatment, and the economically treatable smoke dust is used as the raw material for iron making....  
JP2004124177
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...  
JP2004107748
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...  
JP2004107780
To efficiently and stably treat waste water containing metal to separate and recover valuable metal from the waste water containing metal and to reduce the occurring amount of sludge.In the recovering method for valuable metal in the was...  
JP2004107791
To regenerate an amine used to solvent extraction for recovery of metals without using caustic reagents and complicated filtering steps.A liquid organic phase containing an amine complexed with one or more metals is brought into contact ...  
JP3539334
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 ...  
JP3536901
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...  
JP3535381
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...  
JP3532741
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...  
JP2004076152
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...  
JP2004076089
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...  
JP2004076090
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...  
JP2004052016
To provide a hydrometallurgical process for zinc without conducting roasting, which efficiently collects zinc though using a small facility.This process comprises pulping a concentrate having particle sizes of 10-30 μm with sulfuric aci...  
JP2004000871
To provide a method for treating domestic waste or a waste dry cell and a method for efficiently reproducing as raw materials the valuable metals to be generated when the domestic waste or the waste dry cell is treated.This waste treatin...  
JP2003342648
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...  
JP2003342649
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...  
JP2003326228
To provide a treatment method by which a heavy metal compound utilizable as a nonferrous refining raw material and a calcium compound containing no heavy metals such as zinc and utilizable as a cement raw material can fractionally be rec...  
JP2003321716
To provide a treatment method by which calcium is recovered as hydroxide from a calcium and heavy metal-containing material, and also, copper, zinc and lead can fractionally be recovered.The method includes a stage (A) where calcium and ...  
JP2003313617
To provide a method for easily and appropriately controlling a sulfidization reaction by simply adjusting an oxidation-reduction potential (ORP) and a pH, in a method for controlling the reaction of sulfidizing a heavy metal existing in ...  
JP2003301226
To provide a method for improving a volatilization rate of zinc without increasing a reduction roasting temperature to a higher temperature than normal, in a reduction roasting operation of steel dust.In the operation of adding a carbona...  
JP2003293020
To provide a method for producing a reduced iron with which the collapse and the powdering of a pellet in the heating furnace is produced and the product reduced iron having high dezincificating rate and high metallizing rate can be prod...  
JP2003293181
To provide an electrolysis tank which can achieve energy saving by making electrolytic voltage extremely low in a molten salt electrolysis process which yields chlorine and zinc from zinc chloride which is obtained as a by-product when p...  
JP2003293019
To provide a method for producing a reduced iron by which the collapse and the powdering of a pellet in a heating furnace is prevented and the product reduced iron having high dezincifying rate and high metallizing rate can be produced a...  
JP3480021
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...  
JP2003277845
To analyze the inner part by a blast furnace with an ISP method to a dry-type zinc smelting, which can reproduce an actual operation and can follow a change of a state in the furnace according to the change of operational conditions.A me...  
JP2003266065
To provide an effective method for reducing the amount of a consumed iron material and inhibiting increase in zinc concentration in an obtained ferrous chloride solution, in a method for recovering cobalt from a cobalt chloride- containi...  
JP2003247029
To provide a method for recovering catalytic metals from fluids containing the catalytic metal colloids.Fluid compositions such as rinse solutions or dragout baths containing catalytic metal colloids are passed through a porous metal fil...  
JP3466040
To individually recover with high purity zinc and cadmium contained as valuable materials in the dust which is discharged from a high temperature treatment furnace and contains arsenic and copper as impurities. An oxidizing agent consist...  
JP3464602
To provide a treatment method for a zinc silicate-contg. zinc raw material capable of rapidly settling eluted silica in a state of allowing the sepn. of solid from the liquid with a simple apparatus at the time of extracting zinc by diss...  
JP2003220302
To obtain high concentration of ferric ions used in dissolving ore to increase dissolving efficiency by removing unnecessary metal ions as much as possible and oxidizing by iron oxidizing bacteria.In recovering an objective element from ...  
JP2003213344
To provide a high purity metal such as magnesium by distillation-refining of a raw metal, and to provide a method and an apparatus for refining the high purity metal exhibiting a high yield and efficiency at a low cost.The refining devic...  

Matches 551 - 600 out of 1,241