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JPH0324238A |
PURPOSE: To efficiently collect crude lead with a smaller amt. of smoke ashes to be generated by blowing lead concentrate together with oxygen into a slag melt to oxidize the lead component in the lead concentrate, charging the oxide int...
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JPH0341B2 |
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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JPH02293033A |
PURPOSE: To prevent the formation of a local hot point near an outlet of a gas injector by discharging the flow of the liquid drawn from a bath in nearly the same direction as the direction of the gas discharged from the injector extreme...
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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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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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JPH0237412B2 |
Dross is removed from molten lead during its refining by scraping the dross by means of a rake up a ramp fitted to the rim of the refining pot, a baffle being placed to trap dross in front of the ramp. The rake may be operated manually o...
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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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JPH0235014B2 |
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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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JPH0210207B2 |
PURPOSE:To recover valuable metals from solder plated metals, by subjecting the solder plated metals to an alkaline electrolysis treatment to roughly strip the solder, then stripping the residual solder with a soln. mixture composed of f...
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JPH028014B2 |
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JPH024662B2 |
Lead is obtained from lead sulfide ores or concentrates without prior sintering or roasting by the steps of adding the lead sulfide to a molten slag, injecting sufficient oxide to below the surface of the molten slag and vigorously agita...
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JPH0159342B2 |
PURPOSE:To refine tin or lead at a relatively low gasifying temp. for coal or the like with high efficiency, by bringing a mixture of coal or the like and ore contg. tin oxide or ore contg. lead into contact with CO2 or/and steam at high...
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JPH0158257B2 |
A slag phase and lead phase are conducted in a counter-current to each other in an elongated horizontal reactor, in which a gas atmosphere is conducted in a counter-current to the slag phase. To maintain the molten bath at a constant tem...
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JPH0158258B2 |
A molten bath consisting of a slag phase is maintained in an elongated horizontal reactor. The charge is fed into the reactor on one side thereof onto the molten bath in a melting zone so as to maintain an oxidation potential which cause...
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JPH0147532B2 |
The gases are injected through double-tube nozzles which extend through the wall of the reactor into the molten bath. A cooling protective fluid is injected through one tube of each double-tube nozzle. To reduce or avoid a wear of the do...
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JPH01230731A |
PURPOSE: To enhance a process output and to facilitate the perfect extraction of lead by passing an gas inert to the compsn. of molten metal through a reduction layer to bubble this layer, thereby executing the reduction of the metal oxi...
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JPH01168826A |
PURPOSE: To remove copper component while continuing soldering process by drawing molten solder eluted the copper component into a solder circulating vessel from a solder vessel, cooling while circulating the molten solder, precipitating...
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JPH01165728A |
PURPOSE: To effectively refine lead in a relatively short time at a low cost by dissolving high-grade lead in water as the lead nitrate, bringing the soln. into contact with a multiple adsorbent consisting of hydrated titanium oxide and ...
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JPH0129856B2 |
Lead in separated from a sulfidic concentrate by feeding a finely-divided concentrate, a silicate-high slagging agent, and air or oxygen-enriched air into the upper section of a suspension reaction shaft of a flash-smelting furnace in or...
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JPH01132725A |
Lead with a low alpha particle emission is produced by selecting an orebody wherein lead mineral is present in a coarsely disseminated form and substantially free of impurities. The ore is selected from a host rock that is relatively low...
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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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JPS6364502B2 |
PURPOSE:To efficiently separate and recover the non-ferrous valuable metal in dust from iron, by subjecting iron-containing dust containing various kinds of non-ferrous metals, chlorine and fluorine to acid treatment, alkali treatment an...
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JPS6358882B2 |
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JPS6352094B2 |
Residues containing lead as lead sulphate and silver in the form of native silver or silver chloride, sulfide or sulphate, as well as silver complexes with other metals, and resulting from the roasting and leaching of sulfide concentrate...
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JPS6350407B2 |
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JPS6349732B2 |
A process for the treatment of solutions of lead chloride, containing as impurities at least one metal chosen from the group consisting of silver, copper and bismuth. This process is characterized by the fact that it involves the followi...
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JPS6348934B2 |
PURPOSE:To collect easily a valued metal by low energy by dissolving and deoxidizing a molten iron dust including highly zinc with a carbonaceous solid reducing agent, and separating zinc, iron and lead respectively after the iron dust i...
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JPS6348929B2 |
PURPOSE:To obtain high-grade rich lead in a high yield by adding a siliceous flux, a lime-base flux and a small amount of a carbonaceous reducing agent to slime produced by the electrolysis of copper and by melting them by heating to tra...
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JPS6345458B2 |
PURPOSE:To make waste harmless and to recover valuable material, by combining various processes such as separation of Au, Ag bearing Pb slag by adding H2SO4 in sulfurous acid gas atmosphere, and dissolving out Zn, Fe bearing soln. from Z...
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JPS63205191A |
A process for selective vaporization of oxides from recovered waste dust collected from a bag house. Pellets are formed from the waste dust and dried to permit charging in an oxidizing chamber wherein an oxidizing atmospheric is maintain...
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JPS63203727A |
PURPOSE: To easily and quickly treat lead electrolysis slime at a low cost by adding a bismuth oxide-contg. auxiliary raw material and flux to the lead electrolysis slime to reduce the slime and subjecting the resulted rich lead to cupel...
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JPS63192827A |
The smelting is carried out in a reactor with adjacent oxidation and reduction zones, the slag baths of both zones communicating with one another, the materials being charged to the slag bath in the oxidation zone and oxygen-containing g...
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JPS63162036A |
PURPOSE: To accelerate the liq. phase growth of the titled substance on a surface of a base substance, by heating the base substance in the condition that a part of the base substance is dipped in a liq. contg. an inorganic compd., decom...
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JPS6330372B2 |
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JPS63128138A |
PURPOSE: To smelt lead slag by using an electric furnace at a low cost, by blowing, together with air, a powder mixture prepared by mixing lead slag composed principally of PbSO4, fuel, a solvent, and a reducing agent into a high-temp. m...
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JPS6319576B2 |
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JPS6318652B2 |
A continuous autogenous multi-stage process for converting non-ferrous metal sulfides, in an oscillating, elongated, gently sloped, sealed, tiltable, rounded cross-section furnace, discharging crude metal or low-iron matte at one end, an...
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JPS63501023A |
The mixture of sulfides is chemically attacked with an aqueous oxidizing solution of fluosilicic acid for dissolving the metals present. From said solution, the lead, and optionally the silver, is reprecipitated to the state of sulfates ...
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JPS6380192A |
A method and apparatus for cooling gases and/or vapors from non-ferrous metal treatment plants, wherein gases and/or vapors which develop in the treatment region are passed parallel to a heat transfer surface consisting of one or more se...
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JPS6373084A |
A tank furnace for the metallurgical treatment of non-ferrous metals, consisting of a refractory hearth in the form of an inverted arch disposed on perimetral plate assemblies which are able to move in order to compensate for hearth expa...
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JPS6312149B2 |
PURPOSE:To separate and to recover the copper and lead in speiss efficiently by performing electrolysis in a selected aqueous acid soln. by using the speiss at the anode. CONSTITUTION:The copper and lead in the copper-contg. speiss bypro...
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JPS634613B2 |
Recovery of oxide or silicate-bound metals from liquid slag, in metallic or sulphidic form is carried out by reduction with carbonaceous reducing agent, the thermal energy required to maintain the temperature and perform the reduction an...
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JPS6257379B2 |
A sprinkler burner and method for injecting solid particulate material and a gas into a reactor as a paraboloidal suspension. Means are provided to introduce the gas tangentially into an outer cylindroidal member, comprising a slot-like ...
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JPS62253739A |
Process for removing lead from rare earths in the form of chlorides in aqueous solution, consisting in: - performing a liquid-liquid extraction between an aqueous phase containing at least one rare earth and the lead in the form of chlor...
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JPS62216179A |
The invention relates to a hydrometallurgical process for the overall recovery of the components of exhausted lead-acid batteries, in a re-useable form, said components being mainly constituted by such materials as polypropylene, ebanite...
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JPS62191409A |
Mineral acids are freed from heavy metals, especially copper, arsenic, antimony and lead by precipitating the metals in sulfide form. To this end, the mineral acid is reacted with hydrogen sulfide or an alkali metal sulfide solution unde...
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