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JPH0437606A |
PURPOSE: To obtain the high-purity zinc oxide powder having extremely low contents of lead and cadmium by adding a reducing agent to a zinc plating dross contg. specified amts. of lead and cadmium to melt the dross and oxidizing the gene...
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JPH0432544A |
PURPOSE: To reduce zinc quantity in discharged dross and to reduce plating cost by incorporating the floated dross in zinc plating bath into a vessel, heating, dissolving zinc metal in the dross and extracting from bottom part of the ves...
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JPH0380850B2 |
A method and apparatus for recovering primary metals from pyrometallurgical process dust, in which a vertical shaft retort (10) situated in a furnace or afterburner (12) associated with a pyrometallurgical apparatus, such as an inclined ...
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JPH0371489B2 |
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JPH0361730B2 |
PURPOSE:To perfectly recover valuables from a dry battery, by applying heat treatment to the dry battery crushed under pressure in a first process to recover Hg and Cd as metal vapor while recovering Zn as a molten phase, and recovering ...
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JPH03191031A |
PURPOSE: To provide metal zinc without forming a residue which is of an environmental problem by supplying zinc-contg. raw materials together with a reducing agent into an iron melt, reducing and evaporating the zinc-contg. raw materials...
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JPH03177522A |
PURPOSE: To favorably execute removal of zinc from dust in a blast furnace and recovery of the zinc by treating the blast furnace dust with cooling water from an exhaust gas cooling tower, making slurry and dissolving the zinc into the l...
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JPH03176081A |
PURPOSE: To enable a jarosite-containing residue to be reprocessed by the most economical method to provide a residue that can be supplied directly to another use without the need for disposal by stirring the jarosite-containing residue ...
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JPH0330831Y2 |
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JPH03150325A |
PURPOSE: To efficiently separate and recover zinc from zinc-containing dust generated in iron and steel industry by adding specific amounts of carbonaceous solid to the dust composed essentially of iron oxide and containing zinc, molding...
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JPH0318499Y2 |
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JPH0325489B2 |
A method for producing and distributing wet zinc dust to a zinc sulfate purification system or other zinc plant operation is disclosed. The method comprises atomizing molten zinc with high pressure water or other suitable medium, and fee...
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JPH036208B2 |
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JPH02504601A |
A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and frothing agents in the flotation separation of copper, nickel, lea...
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JPH02298225A |
PURPOSE: To use the scrap of a Zn-plated steel sheet as the iron source for the molten steel refining by a converter by heating the scrap to a specified temp. in an oxidizing gas atmosphere to vaporize and remove the Zn. CONSTITUTION: Th...
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JPH0255374B2 |
Manganese and chloride ions are removed from aqueous acidic zinc sulphate solutions by treatment with ozone. The initial treatment precipitates the manganese as manganese dioxide and continued ozone treatment subsequently removes the chl...
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JPH0254407B2 |
PURPOSE:To remove zinc in titled dust without consuming fuel considerably by subjecting the dust to a mineral acid treatment to dissolve and separate the zinc in the dust and returning the dust freed from the zinc to an iron making blast...
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JPH02277506A |
PURPOSE: To efficiently recover metal values by bringing an aq. soln. contg. the metal values into contact with a water immiscible org. phase contg. a water- insoluble, substituted 8-hydroxiguinoline to transfer the metal values into the...
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JPH0247529B2 |
PURPOSE:To increase the rate of evaporating and recovering Zn and Pb and to decrease the content of F in the recovered crude ZnO by adding a CaO source to iron and steel dust and increasing the CaO/SiO2 ratio of the charge in a rotary ki...
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JPH0247560B2 |
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JPH0244772B2 |
PURPOSE:To recover heavy metals with high purity by adding an aqueous Ca (OH)2 soln. free from undissolvable slaked lime to a soln. acidified with sulfuric acid which contains heavy metals and regulating the soln. to a specified pH value...
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JPH0242887B2 |
The object of the invention is to provide a process for the recovery of iron and zinc from steel making flue dust. The process comprises subjecting the flue dust to a carbiding step in a fluid bed in the presence of a reducing agent and ...
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JPH0242886B2 |
A process for recovering zinc from zinc-containing sulphidic material which also contains iron and lead includes leaching the material under oxidizing conditions at a temperature in the range of from about 130 DEG to about 155 DEG C. in ...
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JPH0239567B2 |
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JPH0237411B2 |
PURPOSE:To perform thoroughly a treatment of dust, etc. of steel making by utilizing the sensible heat of molten slag without pollution by lumping the dust, etc. together with a reducing agent, heating the lumps in a calcination furnace ...
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JPH0237414B2 |
A process for recovering zinc from zinc containing sulphidic material which also contains iron together with lead and/or silver includes leaching the material under oxidizing conditions at a temperature in the range of from about 130 DEG...
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JPH02118033A |
PURPOSE: To manufacture the title briquette having high strength and by which good ventilation can be ensured. in a blast furnace for refining of zinc by forming a briquette of crude zinc oxide at a specific temp., rapidly cooling the br...
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JPH0217616B2 |
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JPH0213017B2 |
PURPOSE:To recover zinc by distillation from high-zinc dust in steel making and iron and lead by a gravity sepn. therefrom by pelletizing said dust, subjecting the pellets to removal of moisture, carbon and ignition loss components and p...
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JPH0210856B2 |
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JPH0254729A |
PURPOSE: To extract Zn ion into an org. phase and to easily neutralize a sulfuric acid soln. contg. Zn ion by adding specified amt. of the ion of Na, K, Mg, Ca, or NH3, etc., as the compds. with chlorine to the sulfuric acid soln. contg....
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JPH028002B2 |
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JPH027376B2 |
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JPH024663B2 |
A process for removing manganese ions from aqueous acidic sulphate solutions containing zinc and manganese ions, without removing a substantial amount of zinc ions from solution, includes treating the solution with ozone (20) to oxidize ...
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JPH0215130A |
PURPOSE: To effectively utilize mixed sludge, etc., derived from a melting furnace, etc., at a low cost by adding zinc-containing metallurgical dust and sludge into the melting furnace for iron scrap, etc., after agglomerating or briquet...
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JPH021762B2 |
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JPH0156128B2 |
A process for recovering zinc from material containing zinc ferrite includes leaching the ferrite containing material together with zinc sulphide containing material in a leach step, with the relative amounts of ferrite material and zinc...
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JPH0139968B2 |
PURPOSE:To improve the purification efficiency in the purification of a Zn- contining composition as a solution in a liquid containing NH4OH and (NH4)2CO3, and to enable the continuous operation of the purification apparatus, by specifyi...
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JPH0138856B2 |
PURPOSE:To make massively solidified slag unslakable by adding electric furnace, dust, cinder, red mud, etc. to molten slag in an electric furnace together with a reducing agent. CONSTITUTION:Electric furnace dust and a reducing agent ar...
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JPH0137979B2 |
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JPH01195246A |
PURPOSE: To slag off residues and to effectively use the slag by disintgrating Zn-contg. sludge, adding the same to high-temp. molten blast furnace slag and evaporating the Zn component. CONSTITUTION: The high-temp. molten blast furnace ...
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JPH0128819B2 |
The plant for producing non-ferrous metal solutions has a group of apparatuses (1, 2) which are mutually connected in accordance with the sequence of the technological process and each of which contains fine-grain fraction container sect...
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JPH01129933A |
PURPOSE: To prevent the clogging of a zinc material discharging nozzle, to eliminate the interruption of operation and to improve the operation rate by depositing the zinc material discharging nozzle to the central part and surrounding i...
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JPH0114674Y2 |
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JPH0121210B2 |
PURPOSE:To easily recover Cu, Zn, Cr and Sr with low energy by converting starting material contg. the metals into fluoride and heating and reducing the fluoride in a gaseous flow contg. hydrogen. CONSTITUTION:Starting material J contg. ...
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JPH0117075B2 |
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JPS64558Y2 |
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JPS64234A |
PURPOSE: To recover Pb in excellent yield by mixing solvent and returned dust into the concentrate of Pb or Pb-Zn base sulfide ore, reducing PbO through a coke layer after oxidation-fusing with oxidizing flame, making crude lead and Zn-c...
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JPS6367531B2 |
A process for selective liquid-liquid extraction of germanium from an aqueous acidic liquor containing, besides germanium, at least another metal selected from the group which comprises cadmium, zinc, cobalt and nickel. This process incl...
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JPS6367530B2 |
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