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Matches 301 - 350 out of 2,507

Document Document Title
WO/1993/019213A1
The metallurgical-works dust is taken to a first furnace atmosphere, preferably at 1000 to 1100 °C. The dust pellet is kept with continuous agitation therein until especially chlorine, alkaline and lead compounds have virtually totally ...  
WO/1993/014030A1
A method for the recovery of zinc oxide from industrial waste materials of various components, including zinc, lead, iron and cadmium, comprising the steps of treating the waste material with an ammonium chloride solution maintained at a...  
WO/1993/011573A1
The invention relates to a method of processing used batteries, especially zinc-carbon and alkali-manganese batteries, in order to recover any usable or environmentally relevant substances, comprising the mechanical reduction of the init...  
WO/1993/008310A1
A process suitable for the extraction or recovery of metal values from arsenic containing feeds and including the steps of: a) treating the feed with a nitric acid-containing leachant solution in order to dissolve the desired metals; b) ...  
WO/1992/008815A1
A process for the treatment of zinc sulfide or other zinc bearing feed materials in conjunction with an iron sulfide containing mineral or compound to effect a separation of zinc from iron by fuming of either zinc and sulphur vapour or z...  
WO/1992/006222A1
The invention relates to the field of metallurgy and to a method and a device for the extraction of zinc in solution in a liquid iron bath (2) held in a container (3), such as a crucible for the casting of foundry parts. It is characteri...  
WO1991009977A3  
WO/1991/009977A2
Zinc is recovered by melting in a furnace a mass containing oxides of zinc and iron, a slag-forming flux material and a carbonaceous material, the content of the carbonaceous material being selected to avoid excessive foaming. The zinc v...  
WO/1991/009146A1
A process is disclosed for recovering zinc, lead, copper and precious metals from zinc plant residue, said process comprising leaching the residue with return zinc spent electrolyte, neutralizing residual acid and reducing ferric iron in...  
WO/1991/008317A1
Zinc may be recovered from zinc sulphide concentrates by establishing a molten slag bath at 1150 °C to 1300 °C containing ferrous and ferric oxides, dissolving zinc sulphide in the bath, oxidizing the zinc sulphide by reaction with the...  
WO/1991/007225A1
Metal vapour, for example zinc fume in the offgas of a smelting furnace, is captured by bringing the stream into direct contact with a fluidized bed of solid particles having a particulate loading of greater than 10 kg/m?3¿ and preferab...  
WO/1991/003424A1
A high temperature process for leaching selected metal compounds, such as gallium or germanium, from ores containing those selected metal compounds is disclosed. The method generally includes contacting metal-containing ores with an admi...  
WO/1991/002825A1
A process for absorbing zinc vapour in molten lead is characterized in that a gas containing zinc vapour is contacted with and then separated from a flowing stream of molten lead in a cyclone.  
WO/1990/013679A1
A process is described for the partial desulphurization roasting of a variety of zinc bearing sulphide ores or concentrates by adjusting the roaster temperature and residence time in the roaster thus providing an oxygen deficient atmosph...  
WO/1989/010791A1
A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with convention collector agents and frothing agents in the flotation separation of copper, nickel, lead,...  
WO/1989/009289A1
The invention relates to a process for recovering non-ferrous metal values such as nickel, cobalt, copper, zinc, manganese and magnesium from material containing said metals, by converting the non-ferrous metal values into sulphates by u...  
WO/1988/001654A1
Lead-zinc complex sulphide ores or concentrates are treated by a process which comprises: a) adding the ore or concentrate to a bath of molten matte which is overlaid by a slag layer; b) agitating and heating the bath by submerged inject...  
WO/1987/003010A1
A furnace (10) and process for recovery of zinc from sulphide materials in which zinc sulphide material together with an oxidizing gas is introduced by lance (20) into a first (17) of two laterally adjacent zones (17, 18) formed by a gas...  
WO/1987/002068A1
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 ...  
WO/1986/006361A1
Preparation of metal carbides, nitrides, borides, silicides and phosphides, also metal alloys and pure metals, by providing a precursor in which there are organic ligands bonded to the metal or metals, such precursor having the element X...  
WO/1986/002107A1
Recovering zinc from zinc bearing ore or concentrate (1) in an electrolic cell (3) which includes a cathode (5) containing cathode compartment (16) and an anode (4) containing anode compartment (2). The cathode and anode compartments are...  
WO/1985/000385A1
A process for recovering metal values from a zinc-containing complex sulphide material comprising leaching the material in a first leaching stage with a controlled amount of an aqueous chloride lixiviant solution containing cupric chlori...  
WO/1982/000664A1
Method for selectively extracting germanium from an aqueous acid solution containing, in addition to germanium, at least another metal selected from the group comprising cadmium, zinc, cobalt, iron, arsenic, aluminium, gallium and nickel...  
WO/1981/003500A1
A process for the production of ferrous metals or alloys thereof in which Zn and other heavy metals are recovered from the iron-bearing flue dust and the iron dust residue is returned to the furnace. The iron bearing flue dust is first s...  
JP5699918B2  
JP2015510483A
赤泥を処理するためのプロセスを提供する。 例えば、このプロセスは、赤泥をHClで浸 出させて、第一の金属(例えば、アルミニウ ム)のイオンを含む浸出液と、固体とを...  
JP2015059264A
【課題】鉄鋼ダストを原材料の一部として用 いる酸化亜鉛鉱製造の全体プロセスにおいて 、当該鉄鋼ダストから副次的に産出される還 元鉄原材料について、その鉄品位を安定...  
JP5690137B2  
JP2015048525A
【課題】高品位のゲルマニウムを、高い回収 率で、効率よくかつ安価に、ゲルマニウムを 含有する溶液から回収することができるゲル マニウムの回収方法の提供。【解決手段...  
JP5682567B2  
JP2015038251A
【課題】高圧酸浸出法によるニッケルの湿式 製錬の脱亜鉛工程にて用いられる、脱亜鉛プ ラントにおける処理量の低下を抑制して生産 量の減少を防ぐとともに、フィルター装...  
JP5676649B2  
JP5661197B2  
JP5660248B1
【課題】ニッケルの湿式製錬の脱亜鉛工程に て用いられる脱亜鉛プラントの立ち上げに際 し、その脱亜鉛プラントにおける処理量の低 下を抑制して生産量の減少を防ぐととも...  
JP2014534346A
浸出工程から高温の水蒸気を含有する排ガス を外に送り出し、浸出工程に高温に加熱した 酸性溶液を送り込む、金属の湿式冶金製造に おける浸出工程で硫化金属精鉱を浸出す...  
JP2014234535A
To provide a method for efficiently recover copper and zinc from neutralizing precipitate containing copper and zinc.A method for recovering copper and zinc from neutralizing precipitate containing iron, copper, zinc, aluminum, and a sil...  
JP5632359B2  
JP2014218697A
To provide a method for producing zinc eliminating additional cost for dechlorination, suitable for treatment to an electric furnace or the like largely containing chlorine, capable of producing a zinc ground metal with high purity of pu...  
JP2014214358A
To provide a simple and inexpensive method of separating gallium from impurities.A method of separating gallium from zinc includes a first step of adjusting the pH of a gallium aqueous solution containing zinc to 3-5 and taking out a pre...  
JP2014214333A
To provide a valuable metal recovery method capable of sufficiently recovering noble metals remaining in a waste liquid, rare earth elements, and other metals, namely valuable metals without causing corrosion of a furnace and capable of ...  
JP2014214360A
To provide a production method which improves the productivity of a zinc oxide sintered mine and includes a drying heating step, using a drying heating rotary kiln (DRK), of reducing the carry-over of an input object in a drying heating ...  
JP2014529678A
本技術は、電気アーク炉(EAF)ダストを リサイクルするための例示的な装置と、この 装置に関連する使用方法とを提供する。この 装置は、分離容量部に対して結合された...  
JP2014529679A
本発明は、金属スクラップの組成の分光分析 を行う前に表面被覆を除去するために少なく とも1つの液体を用いて金属スクラップが処 理される、金属スクラップ、特に鋼鉄ス...  
JP2014205584A
To provide a method for manufacturing scorodite from flue cinder in nonferrous smelting.The method for manufacturing scorodite includes: a primary leaching step in which arsenic, Fe, and Cu-containing flue cinder in nonferrous smelting i...  
JP2014201784A
To provide a metal recovery method in which appearance quality of the metal is high.A metal recovery method in which a manganese clinker (a first mixture) including manganese as a main component is recovered from a waste dry cell includi...  
JP2014201793A
To micronize scrap or ingot-shaped aluminum by a simple and safe method and to use the same for a reducing agent.Scrap or block-shaped aluminum is dissolved, is thereafter discharged from a heating furnace and is allowed to cool. The sur...  
JP2014193455A
To provide a method for reducing environmental loads caused by mine wastes, which will, over time, react with water and atmospheric oxygen to create sulfuric acid and dissolved metals, and which is a problem known as Acid Rock Drainage o...  
JP2014526614A  
JP2014525985A  
JP2014185063A
To provide a technique to recover a composite oxide of In, Ga, and Zn, which is a raw material of a sputtering target of an IGZO sintered compact, from scrap of the sputtering target with a simple method, and thereby to provide a techniq...  

Matches 301 - 350 out of 2,507