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JP3090142B2 |
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JP2000212654A |
To provide a method for recovering heavy metal contents from a substance containing copper, lead, zinc and other heavy metal contents, and chlorine in which the heavy metal is directly separated and recovered from chlorine in an initial ...
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JP2000119761A |
To efficiently recover zinc and lead contained in fly ash by including a process for recovering zinc using a zinc solubilizing agent, a pH adjusting agent and an insolubilizing agent and a process for recovering lead using a lead solubil...
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JP2000084693A |
To reduce a software error of a semiconductor device by producing a stable lead having a reduced a ray quantity through an isotope spectrum to produce a lead alloy solder and using as the solder for a semiconductor device. An isotope is ...
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JP2000054039A |
To provide a metal lead recovering method from a lead-containing material by using a waste battery as a raw material and applying a blast furnace refining method unnecessitating roasting and sintering processes. Metal lead is recovered b...
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JPH11310832A |
To recover iron separated from zinc and lead with high concentration by adding fine particulate coke into a mixture of an iron and steel waste oxide and sludge to form a briquette and firing the briquette in a rotary furnace hearth. The ...
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JP2972524B2 |
PURPOSE:To successively precipitate the lead and zinc in an incinerated ash as the sulfides and to fractionally recover the lead and zinc efficiently by supplying sodium sulfide to a soln. containing eluted heavy metals from the ash and ...
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JP2962207B2 |
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JPH11279669A |
To efficiently regenerate lead alloy slag formed in a lead battery manufacturing process. In the case of lead alloy slag 3 formed from a lead alloy containing Sb and practically free from Ca, the inside of an electric furnace 1 (inside o...
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JPH11267634A |
To efficiently remove lead ion to a low concn. when lead ion is removed from an aq. soln. containing lead ion produced in the production process of nickel by bringing the aq. soln. containing lead ion into contact with an org. solvent ha...
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JPH11256249A |
To separate tin and lead from lead slag consisting essentially of the tin and the lead by obtaining a leaching of dust produced in a converter, in a copper smelting process. The lead slag consisting essentially of lead sulfate and stanni...
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JPH11246920A |
To provide a lead smelting furnace and a lead smelting method with which the consumption of coke is reduced, the pollution of an exhaust gas can be prevented, the working environment is made good, the temp. distribution in the furnace ca...
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JP2944466B2 |
PURPOSE: To classify and recover heavy metals intended to be separated, classified and recovered as sulfides with high purity and high recovery rate always without increasing sulfur component content in treated waste water even when kind...
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JPH11216443A |
To provide a method of removing efficiently a Pb compound in incineration ash at a low cost. In a method of removing a Pb compound contained in incineration ash from it, the incineration ash is kept under an alkali hydrothermal condition...
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JP2894477B2 |
PURPOSE:To use the molten fly ash contg. zinc, lead, mercury and chlorine as the secondary material for nonferrous metal refining without discarding the fly ash to reclamation. CONSTITUTION:The molten fly ash is leached with water in the...
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JPH11106846A |
To make it possible to separate and recover an Ni-Si based alloy and metallic Sn by adding an SiO2-contg. material and a reducing agent to a solder-contg. nickel alloy and subjecting the mixture to reduction melting in a a specific temp....
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JPH11106845A |
To make it possible to separate and recover an Ni-Si-Fe based alloy and metallic Sn by adding ferrosilicon to a solder-contg. nickel alloy in an inert atmosphere and melting this alloy in a specific temp. range. The ferrosilicon is added...
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JPH11503202A |
A method and apparatus for treatment of the fly ash are described wherein heavy metals are separated and wherein there is formed a leaching resistant slag; the fly ash is introduced into a reactor into an oxidizing gas stream which is he...
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JPH1170323A |
To remove Pb-210 from natural lead in high reliability at a low cost by a method wherein near resonance excitation of one photon at one or more Rydberg level, two photons resonance excitation, field ionization following that, and static ...
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JP2861483B2 |
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JP2857930B2 |
PCT No. PCT/AU93/00311 Sec. 371 Date Dec. 23, 1994 Sec. 102(e) Date Dec. 23, 1994 PCT Filed Jun. 25, 1993 PCT Pub. No. WO94/00606 PCT Pub. Date Jan. 6, 1994.A process for producing one or more metals from a mineral feedstock (12) is defi...
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JP2856933B2 |
The invention relates to a method for recovering various valuable materials in connection with the hydrometallurgical production of zinc. The method is particularly suited for feeding different types of raw materials into the various sta...
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JP2848003B2 |
PURPOSE:To efficiently recover lead and zinc by mixing the residue obtained by leaching a copper converter dust and eluting soluble salts into a steel dust, charging the mixture into a rotary kiln and reduction-roasting the mixture. CONS...
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JPH10273740A |
To remarkably reduce the thermal load needed to vaporize water and decompose powdery wet raw material in a smelting reduction furnace by regulating the exhaust gas temp. after heat-exchanging to a specific value or higher, at the time of...
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JPH10273347A |
To effectively utilize a slag by reducing a Pb content in the slag to below a prescribed level by supplying a slag containing Zn and Pb components and carbon into a reaction furnace, reacting the slag in a fused state with the carbon and...
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JPH10265860A |
To reduce and recover metals from metallic sludge and the like with good thermal efficiency with a simple device by cooling the metal vapor-contg. gases from a smelting reduction furnace with the metallic sludge and the like as a refrige...
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JPH10219365A |
To efficiently recover the valuable metals included in lead chloride formed in nonmetal smelting by adjusting the amt. of the carbonaceous reducing agent to be added, thereby forming a soda slag phase, a lead oxide phase and a metal lead...
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JPH10204552A |
To provide a method for recovering lead by which flying ash is stabilized by removing the lead contained in the flying ash and the removed lead is efficiently recovered. An acid 2 is added to the flying ash 1 which is discharged from an ...
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JP2768888B2 |
PURPOSE: To reduce the energy cost of direct reduction by mixing reform gas with a top gas forming in the direct reduction of a fine particle iron oxide containing material and making the gas mixture a reduction gas containing a specifie...
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JP2761643B2 |
PCT No. PCT/SE88/00420 Sec. 371 Date Mar. 17, 1989 Sec. 102(e) Date Mar. 17, 1989 PCT Filed Aug. 17, 1988 PCT Pub. No. WO89/01530 PCT Pub. Date Feb. 23, 1989.The present invention relates to a method for monitoring and control of smeltme...
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JPH10147820A |
To provide a process for producing low α ray lead having α ray quantity of 0.1cph/cm2 or below. An a ray quantify by 210Po collapse in lead concentrate is measured and the lead concentrate of which the α ray quantity by the 210Po coll...
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JPH10140254A |
To reduce only Pb content with minimum reduction of Zn content by adding metallic Ca and/or Cu-Ca alloy in molten brass. At the time of removing Pd as the compound with Ca by adding the metallic Ca and/or the Cu-Ca alloy into the molten ...
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JPH1081922A |
To recover heavy metals contained in an incineration residue of waste as metals by adding a carbon component to fused slag to reduce the heavy metals contained in the slag and recovering reduced heavy metals in a method for melting the i...
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JP2714984B2 |
A novel alloy for use in lead refining is disclosed which comprises magnesium and calcium. The preferred ratio on a weight basis of magnesium to calcium is between 1.2 and 5.2. A method of adding this alloy to a lead bath is described wh...
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JPH1030133A |
To provide a method for treating dust in exhaust gas, by which the dust in the exhaust gas produced at the time of melting ferrous material can be treated without adding a reducing material. At the time of melting the ferrous material 8,...
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JP2706220B2 |
PURPOSE: To obtain a lead base material having high purity by making it possible to lower the nickel content in lead to the lowest possible level by dry process refining. CONSTITUTION: Crude lead is produced by subjecting nickel-contg. l...
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JPH1025524A |
To provide a metal recovering device, in which zinc and lead can be recovered in high yield from dust containing metallic oxide, such as the dust of an electric furnace. The dust containing the metallic oxide of zinc oxide, lead oxide, e...
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JP2704914B2 |
In a metallic vapor condenser for use in recovering, in the form of liquid metal, metallic vapor of a metal having a medium boiling point, the liquid metal of the molten metal is sent from a splash chamber(11) to be circulated through a ...
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JP2697454B2 |
The gasification burner of this invention capable of maintaining a high combustion rate for a long period of time comprises a combustion chamber having a ceiling with a small hole in its center, a pre-mixing pipe fitted into the small ho...
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JPH101725A |
To provide a dust treating device which can recover zinc and lead separately in high yield from the dust stuck to a dust collecting device of an arc furnace for steelmaking. In this dust treating device, metallic oxides are reduced to va...
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JPH101724A |
To reduce the cost of a reducing material to be used for a dust treating device for separating and recovering metal such as lead and zinc, and other materials from the dust stuck to a dust collecting device, etc., of an arc furnace for s...
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JPH09287033A |
To provide a method and a device for removing and recovering zinc and lead from a waste containing zinc and lead in an oxide state. This treatment method comprises vaporizing and recovering zinc and lead converted into pure metals by mix...
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JPH09510505A |
PCT No. PCT/GB95/00612 Sec. 371 Date Nov. 29, 1995 Sec. 102(e) Date Nov. 29, 1995 PCT Filed Mar. 17, 1995 PCT Pub. No. WO95/25823 PCT Pub. Date Sep. 28, 1995Apparatus and a method for recovering solder from dross. Dross is poured into a ...
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JPH09263848A |
To provide a dry type refining method which can efficiently remove copper from lead in a short time. Antimony trisulfide (Sb2S3) in an amount of ≥5 times to the copper is added into the molten lead 3 containing the copper. Sb2S3 is dec...
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JPH09241769A |
To provide a treatment method for a lead sulfate-contg. material having excellent treatment efficiency. A carbon source is added to the lead sulfate-contg. material and the material is put into a sintering furnace. The inside of the furn...
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JPH09234447A |
To provide a method for covering lead contained in a residue and a produced oil when a plastic waste product containing a chlorine-based polymer such as polyvinyl chloride is changed to oil. A lead component contained in the residue obta...
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JPH09227961A |
To provide a method for treating zinc oxide-contg. waste capable of recovering metallic zinc having high purity from the waste contg. zinc oxide and executing the on-site treatment. Mixed treating materials are obtd. by mixing the waste ...
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JPH09157767A |
To facilitate the discarding and recycling treatment of a sample adhered with lead by immersing the sample into a lead separating liquid for dissolving the lead, thereby separating the lead from the sample. The sample adhered with at lea...
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JPH0973924A |
To retard the reduction of dross or efficiently recover a lead alloy from the dross by letting carbon and PbOx powder exist on the surface of molten metal. 2-5wt.% carbon powder and 2-5wt.% Pb3O4 powder, for example, based on the weight ...
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JPH08512092A |
A process for recovering zinc and iron from zinc- and iron-containing sulphidic material, which also contains lead and silver, in which the sulphidic material is leached under oxidizing conditions in a two stage countercurrent pressure l...
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