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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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JPH08510011A |
Process for the treatment of solid products containing a metal of low melting point, according to which these products are heated in a first zone, are thermolysed (2) in a second zone at a subatmospheric pressure while liquid metal flowi...
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JPH08260063A |
To separate and recover highly purified electrolytic lead and elemental sulphur in high yields and at a low cost by treating the active mass of exhausted lead batteries with a hydrometallurgical and electrochemical process. PbSo4 and PbO...
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JPH08199255A |
PURPOSE: To classify and oxidation-remove antimony and lead by adding sodium carbonate and calcium sulfate as a flux to lead bullion contg. noble metals, antimony and lead at the time of recovering noble metals as metals by oxidation sme...
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JPH08143347A |
PURPOSE: To provide a device for recovering dross which is hardly broken down as the dross falls at one time in the form of nearly one lump by forming such dross into lumps of a suitable size. CONSTITUTION: This dross dispersing device h...
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JPH0813052A |
PURPOSE: To efficiently recover a noble metal by rapidly and easily estimating the degree of progression of reaction and deciding the optimum timing and end point of an alkaline treatment or addition lead treatment at the time of recover...
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JPH07301406A |
PURPOSE: To recover valuable metals such as copper, lead. etc., from molten metal produced by a melting furnace for refuse melting treatment and effectively reuse them, by providing a molten metal trap having a specified depth in the hea...
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JPH07103428B2 |
A process for recovering valuable metals from an iron dust using a shaft furnace is disclosed. The iron dust is agglomerated and supplied into a the shaft furnace together with a lump coke and a flux. Valuable metal oxides contained in t...
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JPH07508206A |
It has been found that Ambrosia sp. and Apocynum sp. accumulate lead in the leaves, stems, and roots when it grows in soil containing organic or inorganic species of lead. Lead is accumulated in the leaves and stems to a greater extent t...
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JPH0784623B2 |
Temperature control in a pressurised oxidation leach for the recovery of non-ferrous metals from a sulphidic material is exercised by carrying out the leach in a multi-compartment autoclave (12), the first compartment (14) of which conta...
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JPH07216464A |
PURPOSE: To execute treatment safe in terms of environmental conservation without being affected by the zinc and lead content in raw materials by specifying operation conditions, such as specification of an oxygen quantity in a furnace a...
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JPH07507102A |
A method is disclosed of reprocessing lead-containing materials in which simple and complex metal sulphates and oxides, including higher oxides of iron, predominate, examples of such materials being the sludges and dust obtained during t...
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JPH0747784B2 |
PURPOSE:To prevent wall adhesion as the worst defect of a rotary kiln practically used to recover the Zn and Pb in the steelmaking dust to make it harmless, to operate the kiln for a long period and further to significantly improve the r...
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JPH0747786B2 |
PURPOSE:To drastically improve oxygen efficiency and to reduce the developing ratio of flue cinder by making the specific constitution of a concentrate burner in a self-melting furnace for nonferrous metal sulfide using oxygen-enriched a...
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JPH07126013A |
PURPOSE: To recovery copper, zinc and lead from the chlorides in crude zinc oxide. CONSTITUTION: The chlorides are leached out into water, sodium hydroxide and sodium carbonate are added to precipitate the valuable metals in the chloride...
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JPH0720553Y2 |
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JPH07113129A |
PURPOSE: To efficiently recover lead from a lead-contg. raw material without causing environmental pollution. CONSTITUTION: The lead-contg. raw material is allowed to chemically react with sodium hydroxide to extract and separate metalli...
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JPH07503659A |
Lead-contaminated soil and battery casings are remediated using a plasma arc furnace which pyrolyzes the soil and waste battery casings so as to form a vitrified slag and a combustible gas, respectively. The combustible gas along with vo...
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JPH0770657A |
PURPOSE: To recover a high-Pb lead concentrate from the exudation residue of wet zinc refining. CONSTITUTION: The zinc ferrite in the exudation residue of wet zinc refining is removed by using sulfuric acid, a lead concentrate is recover...
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JPH0718346A |
PURPOSE: To obtain the whole heat capacity required for a retreating method from solid carbon-containing material. CONSTITUTION: The mixture of a high active solid carbon-containing material and a low active solid carbon-containing mater...
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JPH0711354A |
PURPOSE: To lower the consumption unit of carbonaceous materials by improving the recovery rate of Zn and Pb from iron and steel dust in operation of a rotary kiln for reduction of the iron and steel dust. CONSTITUTION: Powdery coke of 1...
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JPH06300468A |
PURPOSE: To provide an unmanned process for cooling molten metal by a method wherein a baffle plate is provided projecting from a dolly into the underlying cooling trough in a rotary manner to turn aside the flow of the molten metal and ...
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JPH06279878A |
PURPOSE: To recover desulfurized lead from fines incorporating lead such as spent buttery fines. CONSTITUTION: In an electric furnace 1 equipped with immersed electrodes 5, 6, (a) the fines are melted under not very reducing conditions i...
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JPH06271954A |
PURPOSE: To promote the slag formation of ash content in the settled coke and to prevent the production of metallic iron with unburning carbon by blowing a gas into the slag in a settler of a reduction furnace for smelting zinc or lead t...
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JPH06256867A |
PURPOSE: To provide an operational method of reduction furnace, in which harmful influence caused by ash content in powdery coke settled on slag surface in the reduction furnace and unburning coke can effectively be removed. CONSTITUTION...
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JPH06248366A |
PURPOSE: To provide the reduction furnace which does not require forcible heat removing means, such as cooling of refractories of a reaction column in a smelting method for zinc and lead using a flash furnace as a reduction furnace and i...
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JPH06191809A |
PURPOSE: To obtain a lead-, cadmium- and zinc-free solid residue and phosphoric acid into which the residue is dissolved and incorporated by dissolving the dusts generated in an electrostatic precipitator under prescribed conditions and ...
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JPH06174383A |
PURPOSE: To furnish a novel treating method wherein impurity components such as Zn, Pb, Cl, etc., are removed and collected from electric furnace dust containing these components, while an iron content is returned in the form of higher p...
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JPH0643621B2 |
PCT No. PCT/SE86/00082 Sec. 371 Date Oct. 27, 1986 Sec. 102(e) Date Oct. 27, 1986 PCT Filed Feb. 25, 1986 PCT Pub. No. WO86/05211 PCT Pub. Date Sep. 12, 1986.The invention relates to a method for working-up valuable metal-bearing waste p...
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JPH06108177A |
PURPOSE: To separate and recover Bi from the debismuthized dross generated in a lead refining stage at high purity by removing Ca and Mg from the dross to form an upgraded dross, then subjecting the upgraded dross to a halogenation treat...
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JPH0613740B2 |
Process for the continuous purification of work lead by cooling. Said process is characterized in that liquid work lead is poured into a thermostat cauldron containing liquid metal lead at a temperature lower than 500C approximately and ...
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JPH0610071A |
PURPOSE: To easily separate and recover an individual metal from a metallic mixture by charging the mixture having metal layers of different melting points into an inclined type rotary furnace, heating a specific temp. to melt a low melt...
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JPH0585625B2 |
A method for separating a certain metal from a raw material including a mixture of the metal and an element which has a lower vapor pressure than the metal. The raw material including the mixture of the metal and the element is heated so...
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JPH05311259A |
PURPOSE: To recover the valuable matter of lead electrolyzing slime with the wet process treatment. CONSTITUTION: (a) The silicofluoric acid component sticking to the lead electrolyzing slime is washed with dilute sulfuric acid or water....
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JPH05258780A |
PURPOSE: To prevent environmental contamination because required energy and water is relatively small in quantity and very economical because a total amount of wasteful active material can be reused, and metallurgic processing is not req...
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JPH05255772A |
PURPOSE: To recover Zn, Pb, etc., in flue dust and to utilize the contained Fe as raw material for steelmaking by treating the flue dust generated from an electric furnace for steelmaking with chemical dissolving treatment, electrolysis,...
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JPH05195105A |
PURPOSE: To provide an extracting method for recovery of zinc from a base metal-contg. geothermal brine. CONSTITUTION: A first insoluble org. extraction solvent having a selective property to extract of zinc is brought into contact with ...
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JPH0578759A |
PURPOSE: To drastically, technically, simply and economically reduce the oxides of non-ferrous metals, in a method for reducing molten slag or fused salt existing on the non-ferrous molten metal layer and containing the oxides of the non...
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JPH0515768B2 |
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JPH059495B2 |
A process for separately recovering zinc and lead values from zinc and lead containing sulphidic ore which also contains iron comprises subjecting ground ore to a first flotation step to float an initial lead concentrate containing zinc ...
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JPH0474416B2 |
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JPH04224639A |
PURPOSE: To rapidly and well float and separate tin, arsenic and Sb as well simultaneously with copper by stirring molten crude lead having the ratio to the amt. of the copper and the total amt. of the tin, arsenic and Sb within a specif...
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JPH04218627A |
PURPOSE: To constitute the method in such a manner that the retreatment of the zinc and lead-contg. residual slag of a metallurgical plant is executed by the heat treatment in a circulating fluidized bed system and that the main part of ...
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JPH0444068B2 |
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JPH0427841B2 |
The shoe comprises a shoe body that has a standard length and has a width greater than the standard size. Different combinations of insoles (1) serve to alter the circumferential configuration around a foot in the shoe body can be insert...
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JPH0422975B2 |
PURPOSE:To recover the valued resource in a dry battery without pollution by processing an exhausted dry battery with the device composed of a heat decomposition device, liquid-gas processing device and a heavy metal collecting device. C...
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JPH0413409B2 |
A method for the pyrometallurgical treatment of environmentally hazardous steelmill flue dust and sludges to separate and recover the volatile heavy metals from the flue dust material and to convert the remaining iron into recyclable dir...
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JPH0371489B2 |
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JPH0368756B2 |
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JPH0387591A |
PURPOSE: To equally heat a material for effective reaction over the entire length thereof, by providing a kiln for calcining massicot to generate litharge with a heater operating along the entire length of a first tubular structure based...
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