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JPS62170436A |
PURPOSE: To make efficient and economical sepn. and recovery by providing dams to increase the reduction time of dust in the stage of reducing and evaporating the dust contg. Fe2O3, ZnO, PbO, in a rotary kiln and separating and recoverin...
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JPS6226442Y2 |
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JPS6227138B2 |
There is disclosed a continuous direct process of lead smelting comprising a step of blowing a compounded feedstock by means of an oxygen-enriched air or oxygen into a smelting zone containing a molten lead bath with a blast pressure by ...
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JPS62127432A |
PURPOSE: To recover useful metals in high efficiency without wasting a reducing agent by providing the inner wall of a rotary kiln in the direction of length with plural annular dams so as to divide the kiln into two or more reducing atm...
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JPS62120436A |
The desulphurized paste is leached with an acid suitable for the subsequent electrowinning, with an amount of hydrogen peroxide necessary to reduce all of the existing PbO2 being added. A high extraction yield is obtained, without foreig...
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JPS6214017B2 |
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JPS6267126A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS6260832A |
According to the instant invention fine and very fine granular zinc- and lead-containing oxidic byproducts are mixed with thermally inert additives and are hot briquetted with caking coal as a binder at a temperature of 490 DEG +/-40 DEG...
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JPS627254B2 |
Zinc and lead are separated together out of dust derived from a gas-cleaning installation in iron or steel making by a flotation-separation treatment. In order economically to provide a good separation of these metals and to leave a resi...
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JPS6227532A |
Zinc and other metals are recovered form strongly bound zinc ferrite compounds in furnace dust. To the dust is added 1 weight percent of free zinc oxide unless already present. The dust is treated for 1 hour at 750C with a 20:1 air:chlor...
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JPS624456B2 |
An improved continuous process for the conversion of a non-ferrous metal sulfide to form (A) a slag phase and (B) a non-ferrous metal phase of greater non-ferrous metal than the unconverted non-ferrous metal sulfide, by heating the non-f...
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JPS62211B2 |
A process for treating a residue from the sulfuric acid leaching of roasted zinc blende, comprising (A) LEACHING THE RESIDUE IN A SINGLE STAGE WITH SULFURIC ACID AND A METAL SULFIDE SUPPLIED IN A QUANTITY SUFFICIENT FOR TRANSFORMING THE ...
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JPS61187371U |
The invention concerns a means for separating molten particles from the exhaust gases of metallurgical furnaces and for returning them to the furnace space (3). As taught by the invention, a molten dust cyclone has been provided substant...
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JPS6154094B2 |
PURPOSE:To recover efficiently valuable metals with a small amount of reducing agent and fuel by charging dust containing the valuable metals and iron and the solid carbonaceous reducing agent to a kiln toreduce the metals and by oxidizi...
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JPS6154095B2 |
There is disclosed a novel method of recovering valuable metals from an industrial by-product containing copper and arsenic and at least one metal selected from among lead, zinc, iron, silver and cadmium, said method comprising leaching ...
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JPS6144156B2 |
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JPS61217537A |
An apparatus is described which serves for a pyrometallurgical processing of fine-grained solids suspended in high-oxygen gases, comprising a generally horizontally extending cylindrical vessel and a combustion shaft, which communicates ...
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JPS6128004B2 |
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JPS6123248B2 |
PURPOSE:To improve the grade of Au, Ag, Cu, Pb, etc. incorporated into matte of zinc, copper, etc. and to improve yield by adding sulfuric acid having a specific concn. to the matte and eluting and removing the iron-component, zinc- comp...
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JPS6122010B2 |
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JPS6116413B2 |
The present invention relates to a process for purifying metals, such as aluminum, by segregation, wherein, by controlled cooling in the upper part of a volume of liquid metal to be purified, which is contained in a crucible and disposed...
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JPS619370B2 |
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JPS6156255A |
In the smelting process for recovering metals from non-ferrous metal oxide ore or concentrates and/or fine-grained non-ferrous metal sulfide ores or concentrates, specially, sulfide ores consisting of non-ferrous heavy metal or concentra...
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JPS6156258A |
A method for the continuous pyrometallurgical processing of copper-lead matte having a high lead content relative to copper. In order to ensure an economical and ecologically satisfactory processing, the following steps are performed in ...
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JPS616134B2 |
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JPS613857B2 |
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JPS6059975B2 |
A method of concentrating silver from anode slime which comprises reacting an intermediate product obtained by treatment of the slime, the intermediate product containing lead in sulfate form and silver in chloride form, with an aqueous ...
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JPS60251234A |
PURPOSE: To obtain crude zinc by means of distillation and separation of zinc and to recover iron and lead by means of specific gravity separation by pelletizing iron dust contg. high lead which is produced in an electric steel making pr...
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JPS6056407B2 |
PURPOSE:To recover Zn, Pb, etc. and to prevent steel making slag from being crumbled, by charging electric furnace dust into an electric furnace together with starting material for steel making and by adding the remaining electric furnac...
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JPS6056219B2 |
Lead-copper-sulphur charges (e.g., ores and concentrates) containing at least one of the elements Fe, Ag, Bi, Zn and Sn are treated pyrometallurgically to recover their metal values by a process comprising the steps of (a) smelting the c...
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JPS6053090B2 |
A method of recovering Zn and Pb from iron and steel dust wherein the interior of a rotary smelting furnace connected to the discharge side of a rotary kiln is heated by a burner disposed on the outlet side of the rotary smelting furnace...
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JPS6051542B2 |
A continuous method and apparatus for removing copper from lead comprises introducing molten lead and sulphur to the upper end of a vertical stirred reaction vessel, maintaining a dispersion of sulphur in the lead without substantial bac...
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JPS6051539B2 |
In an apparatus for refining molten metal comprising a vessel having an inlet compartment; first and second refining compartments, each having a rotating gas distributing device disposed therein; and an exit compartment, the improvement ...
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JPS6050852B2 |
A method of reducing and recovering volatile metal from metal oxides comprising the steps of injecting metal oxide-containing material into a shaft reactor, simultaneously injecting reducing agent into said reactor, continuously maintain...
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JPS6049701B2 |
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JPS60218435A |
PURPOSE: To enable continuous manufacture of rough metal from the refined nonferrous metal sulfide ore by improving a counter current continuous furnace as a single furnace. CONSTITUTION: Refined nonferrous metal sulfide ore is introduce...
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JPS6047335B2 |
PURPOSE:To conduct Hg and Se recovery from sludge with high yield by a method wherein sulfuric acid sludge which contains Hg and Se is treated by attrition method in solution made acidic by sulfuric acid and then processed by floatation ...
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JPS6045694B2 |
A procedure based on suspension smelting has been developed for producing lead bullion from sulphidic concentrates in which the proportion of iron and of slag-forming substances is low. In the procedure oxygen or oxygen-enriched air is u...
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JPS6045258B2 |
Lead is separated from material containing lead sulfide, e.g. galena ore concentrate, by a substantially autogenous process involving establishing a pool of molten lead in a kettle, adding a metallic alkali metal, e.g. metallic sodium, t...
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JPS6044380B2 |
A method is provided for the continuous purification of an impure metal in a column consisting of a slurry of metal crystals in liquid metal, said column having a relatively hot zone and a continuous temperature gradient between said zon...
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JPS60187633A |
The invention relates to a method for producing metallic lead from lead-containing starting materials by an oxidizing smelting process and subsequent reduction of the resultant oxidic molten bath. The reduction is effected with solid car...
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JPS60187635A |
The invention is a procedure for extracting metal values from zinciferous crude lead through oxidizing smelting and reduction of the formed smelt. Smelting is carried out in an oven with the addition of slag former to create a slag that ...
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JPS60184646A |
PURPOSE: To utilize energy of slag of steel making for efficient treatment of dust, etc. by calcining the dust and sludge, charging the calcined material into the slag, accelerating reaction by mechanical stirring and recovering volatile...
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JPS60184645A |
PURPOSE: To utilize energy of slag of steel making for efficient treatment of dust, etc. by calcining the dust and sludge, charging the same into the slag, blowing a bubbling gas thereto to accelerate reaction and recovering volatile met...
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JPS6041135B2 |
5-Heptyl-2-hydroxybenzaldoximes in which the heptyl group is attached to the benzene ring through a tertiary carbon atom and particularly mixtures of such aldoximes are effective as extractants for metals such as copper from aqueous solu...
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JPS60174837A |
The invention relates to a process for the refining of sulfidic concentrates which contain arsenic, antimony and bismuth, wherein a suspension of the sulfidic concentrate and oxygen or oxygen-enriched air is introduced into the upper par...
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JPS6039139B2 |
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JPS60169529A |
PURPOSE: To reduce the amount of impurity elements in crude copper and to recover the elements by removing the elements from the crude copper by slag refining and by dissolving formed slag in water to recover an alkaline earth metallic c...
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JPS60165326A |
PURPOSE: To make noxious heavy metal-containing dust innoxious, by melting heavy metal dust scattered, when fly ash containing a noxious heavy metal generated from an incineration plant is melted and solidified, along with phosphate to c...
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JPS6036459B2 |
PURPOSE:To recover an underlayer eluted metal with high efficiency and to facilitate the recognition of the final point of recovery, in rectification of zinc or the like, by inserting a partition cylinder into an eluting furnace, and loc...
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