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1.发明授权Plasma torch and an apparatus for producing fused silica using plasma arc electrodes 失效等离子火炬和使用等离子弧电极生产熔融石英的设备
公开(公告)号：US5376767A
公开(公告)日：1994-12-27
申请号：US093710
申请日：1993-07-20
IPC分类号： C03B20/00 , C03B19/01 , C03B37/012 , C03C3/06 , C23C4/10 , H05H1/34 , H05H1/42 , H05H1/44 , B23K10/00
CPC分类号： C03B19/01 , C03B37/01291 , C23C4/11 , H05H1/42 , H05H1/44
摘要： An apparatus for producing fused silica includes at least one anodic plasma arc electrode and at least one cathodic plasma arc electrode adjustably arranged with respect to one another so that the plasma arcs formed thereby couple together to form a plasma arc coupling zone. A feedstock material is fed into a region between the electrodes or to a region near the electrodes where the plasma arc coupling zone is formed. A platform is located beneath the plasma arc coupling zone to receive the silica product which is formed in the plasma arc coupling zone. The platform may be rotated about its axis and move up and down along its axis. A cooling device also may be included with the platform. The plasma anode torch used in the apparatus includes a cylindrical nozzle with a non-consumable, copper, blunt ended electrode disposed therein. A channel is provided between the electrode and the nozzle wall to allow the plasma gas to pass through the torch.
摘要翻译： 用于生产熔凝石英的装置包括至少一个阳极等离子弧电极和至少一个相对于彼此可调节地布置的阴极等离子弧电极，使得形成的等离子弧由此耦合在一起以形成等离子弧耦合区。 原料材料被供给到电极之间的区域或者在形成等离子体电弧耦合区域的电极附近的区域中。 平台位于等离子弧耦合区之下，以接收在等离子弧耦合区中形成的二氧化硅产物。 平台可绕其轴线旋转并沿其轴线上下移动。 平台还可以包括冷却装置。 在该设备中使用的等离子体阳极手电筒包括一个圆柱形喷嘴，其具有设置在其中的不消耗的铜，钝端电极。 在电极和喷嘴壁之间提供通道，以允许等离子体气体通过焊炬。
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公开(公告)号：US5256855A
公开(公告)日：1993-10-26
申请号：US859001
申请日：1992-03-30
IPC分类号： C03B20/00 , C03B19/01 , C03B37/012 , C03C3/06 , C23C4/10 , H05H1/34 , H05H1/42 , H05H1/44 , B23K9/00
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 are coupled, thereby raising the temperature of the feedstock material and collecting the material as fused silica.
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公开(公告)号：US4891060A
公开(公告)日：1990-01-02
申请号：US234686
申请日：1988-08-22
摘要： A process for the recovery of gold from a refractory of 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.degree. 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.degree. C.
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公开(公告)号：US5028248A
公开(公告)日：1991-07-02
申请号：US636003
申请日：1991-01-03
IPC分类号： C03B5/02 , C03B5/14 , F27B3/06 , F27B3/08 , F27B14/08 , F27D3/00 , F27D11/10 , F27D27/00 , F27D99/00 , H05B7/00
CPC分类号： F27D27/00 , C03B5/025 , C03B5/14 , F27B14/08 , F27B3/06 , F27B3/08 , F27D11/10 , F27D3/0025 , H05B7/00 , C03B2211/70 , F27B2014/0812 , F27B2014/0887 , F27D2003/0087 , F27D2099/0031 , F27M2001/03 , Y02P40/57 , Y10S65/04
摘要： A method of melting materials at power densities in excess of 25 KW/ft.sup.2 of area within the metal shell of a melting vessel which method consists essentially of continuously feeding the material to be melted to a plasma arc furnace which is equipped with at least two transferred arc plasma electrodes and with means to rotate at least the portion of the furnace containing the material to be melted, melting the said feedstock material using the at least two transferred arc plasma electrodes whilst rotating at least the rotatable portion of the furnace containing the material to be melted and continuously discharging the material which has been melted from the furnace.Apparatus for melting materials under power densities of greater than 25 KW/ft.sup.2 is also disclosed.
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公开(公告)号：US4137866A
公开(公告)日：1979-02-06
申请号：US785111
申请日：1977-04-06
IPC分类号： G01N33/48 , G01N1/28 , G01N33/483 , B05C11/02
CPC分类号： G01N1/2813
摘要： Forming a blood trace of predetermined length and width on a flexible supporting strip by depositing a blood sample on the strip, contacting the sample with a trace tip carried by an adjacent strip and moving the sample relative to the tip through a predetermined course to control the width and length of said trace.
摘要翻译： 通过在条带上沉积血液样品，形成预定长度和宽度的预定长度和宽度的血迹，使样品与相邻条带承载的迹线尖端接触，并通过预定过程移动样品相对于尖端，以控制 所述迹线的宽度和长度。
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