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公开(公告)号：EP0511973B1
公开(公告)日：1996-03-20
申请号：EP91901595.8
申请日：1990-12-17
申请人： TETRONICS RESEARCH & DEVELOPMENT COMPANY LIMITED , INTERNATIONAL MILL SERVICE INC. , MULTISERV INTERNATIONAL LIMITED
发明人： COWX, Peter Malcolm
CPC分类号： C22B19/18 , C22B7/02 , C22B19/04 , C22B19/30 , Y02P10/212
摘要： 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 vapour produced is condensed in a condensor (10) having an impeller (20) and a cooling circuit (30).
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2.发明公开Process and apparatus for the production of fused silica 失效Verfahren und Vorrichtung zum Herstellen von Quarzgut。
公开(公告)号：EP0510816A2
公开(公告)日：1992-10-28
申请号：EP92302542.3
申请日：1992-03-25
CPC分类号： C03B19/01 , C03B37/01291 , C23C4/11 , H05H1/42 , H05H1/44
摘要： Method for the production of fused silica in which a particulate silica feedstock material is passed from a silica feed tube through or near a plasma arc coupling zone in which at least two plasma arcs of opposite polarity arc coupled, thereby raising the temperature of the feedstock material and collecting the material as fused silica.
摘要翻译： 生产熔融二氧化硅的方法，其中颗粒状二氧化硅原料从二氧化硅进料管通过其中至少两个相反极性的等离子体电弧耦合的等离子体电弧耦合区域附近，从而提高原料材料的温度 并收集材料作为熔融二氧化硅。
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公开(公告)号：EP0305131A3
公开(公告)日：1990-01-31
申请号：EP88307745.5
申请日：1988-08-22
摘要： A process for the recovery of gold from a refractory or non-refractory gold containing concentrate which contains sulphide minerals, which process comprises the steps of:-
i) heating the gold containing concentrate to a temperature of above 1150°C in order to thermally decompose the sulphide minerals contained therein, and ii) subjecting the thermal decomposition product obtained from step (i) to reaction with oxygen in a plasma arc furnace maintained at a temperature of above 1150°C.-
公开(公告)号：EP0369642B1
公开(公告)日：1997-03-12
申请号：EP89311298.7
申请日：1989-11-01
CPC分类号： F27D27/00 , C03B5/025 , C03B5/14 , C03B2211/70 , F27B3/06 , F27B3/08 , F27B14/08 , F27B2014/0812 , F27B2014/0887 , F27D3/0025 , F27D11/10 , F27D2003/0087 , F27D2099/0031 , F27M2001/03 , H05B7/00 , Y02P40/57 , Y10S65/04
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公开(公告)号：EP0511973A1
公开(公告)日：1992-11-11
申请号：EP91901595.0
申请日：1990-12-17
发明人： COWX, Peter Malcolm
CPC分类号： C22B19/18 , C22B7/02 , C22B19/04 , C22B19/30 , Y02P10/212
摘要： On récupère du zinc en faisant fondre dans un four un mélange contenant des oxydes de zinc et de fer, un matériau fondant formant des scories, et un matériau carboné dont la teneur est choisie de manière à éviter un moussage excessif. La vapeur de zinc produite est condensée dans un condenseur (10) comportant un rotor (20) et un circuit de refroidissement (30).
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公开(公告)号：EP0369642A3
公开(公告)日：1991-01-09
申请号：EP89311298.7
申请日：1989-11-01
CPC分类号： F27D27/00 , C03B5/025 , C03B5/14 , C03B2211/70 , F27B3/06 , F27B3/08 , F27B14/08 , F27B2014/0812 , F27B2014/0887 , F27D3/0025 , F27D11/10 , F27D2003/0087 , F27D2099/0031 , F27M2001/03 , H05B7/00 , Y02P40/57 , Y10S65/04
摘要： A method of melting materials at power densities in excess of 25 KW/ft² of area within the metal shell (11) of a melting vessel (10) which method comprises continuously feeding (13) the material to be melted to a plasma arc furnace, melting the said feedstock material using at least two transferred arc plasma electrodes (15,16) whilst rotating at least the portion of the furnace containing the material to be melted and continuously discharging the molten material through the rotating bottom (17) of the furnace. Apparatus for melting materials under power densities of greater than 25 KW/ft² is also disclosed.
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公开(公告)号：EP0369642A2
公开(公告)日：1990-05-23
申请号：EP89311298.7
申请日：1989-11-01
CPC分类号： F27D27/00 , C03B5/025 , C03B5/14 , C03B2211/70 , F27B3/06 , F27B3/08 , F27B14/08 , F27B2014/0812 , F27B2014/0887 , F27D3/0025 , F27D11/10 , F27D2003/0087 , F27D2099/0031 , F27M2001/03 , H05B7/00 , Y02P40/57 , Y10S65/04
摘要： A method of melting materials at power densities in excess of 25 KW/ft² of area within the metal shell (11) of a melting vessel (10) which method comprises continuously feeding (13) the material to be melted to a plasma arc furnace, melting the said feedstock material using at least two transferred arc plasma electrodes (15,16) whilst rotating at least the portion of the furnace containing the material to be melted and continuously discharging the molten material through the rotating bottom (17) of the furnace.
Apparatus for melting materials under power densities of greater than 25 KW/ft² is also disclosed.摘要翻译： 一种在熔化容器（10）的金属壳（11）内的功率密度超过25KW / ft 2的面积熔化材料的方法，该方法包括将待熔化的材料连续进料（13）到等离子体 电弧炉，使用至少两个转移的电弧等离子体电极（15,16）熔化所述原料材料，同时至少旋转包含待熔化材料的炉的部分，并连续地将熔融材料排出通过旋转底部（17）的 炉子。 还公开了在大于25KW / ft 2的功率密度下熔化材料的装置。
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公开(公告)号：EP0544786B1
公开(公告)日：1995-11-02
申请号：EP91915726.3
申请日：1991-08-19
申请人： TETRONICS RESEARCH & DEVELOPMENT COMPANY LIMITED , INTERNATIONAL MILL SERVICE INC. , MULTISERV INTERNATIONAL LIMITED
发明人： COWX, Peter, Malcolm
CPC分类号： C21C5/005 , C21C5/5229 , C21C5/5264 , F27B3/085 , F27B3/10 , F27D99/0073 , H05B7/101 , H05B7/12 , H05H1/341 , Y02P10/216
摘要： An arc is drawn between a movable electrode (E) (preferably graphite), and a fixed electrode (7) in a furnace when smelting metal oxides using a plasma. Shielding gas, e.g. N, is introduced into plenum (P) about the movable electrode (E) to prevent metal vapour from settling on the inner lining (3; 9) of the furnace (1). The movable electrode (E) may be connected to a mast (30) on the furnace roof (4) to align that electrode (E) in its path through a hole (10) in the roof (4) into the furnace chamber (C).
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公开(公告)号：EP0398699B1
公开(公告)日：1994-01-26
申请号：EP90305316.3
申请日：1990-05-16
CPC分类号： C03B5/235 , C03B5/025 , C03B5/2353 , C03B37/01 , C03B37/09 , C03B2211/70 , H05B7/00 , H05H1/44 , Y02P40/55 , Y10S65/04
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公开(公告)号：EP0510816A3
公开(公告)日：1993-01-07
申请号：EP92302542.3
申请日：1992-03-25
CPC分类号： C03B19/01 , C03B37/01291 , C23C4/11 , H05H1/42 , H05H1/44
摘要： Method for the production of fused silica in which a particulate silica feedstock material is passed from a silica feed tube through or near a plasma arc coupling zone in which at least two plasma arcs of opposite polarity arc coupled, thereby raising the temperature of the feedstock material and collecting the material as fused silica.
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