公开(公告)号：US20200165151A1

公开(公告)日：2020-05-28

申请号：US16691956

申请日：2019-11-22

申请人： Heraeus Conamic UK Limited

发明人： Alan MUNDY ,  Ian George SAYCE ,  Boris GROMANN

IPC分类号： C03B20/00 ,  C03C3/06 ,  C03B33/06 ,  C03B33/10 ,  C03B25/00

摘要： A method and apparatus for manufacturing a quartz glass ingot of large cross-sectional area by continuous flame-fusion whereby on-line crack-free cutting of the ingot is ensured by using the internal heat of the ingot to permit equilibration of the internal and surface temperatures while passing through one or more annealing chambers, thus ensuring controlled cooling to temperature at which it is possible to cut the ingot with a water-cooled saw.

公开(公告)号：US20220119297A1

公开(公告)日：2022-04-21

申请号：US17566277

申请日：2021-12-30

申请人： HERAEUS CONAMIC UK LIMITED

发明人： Alan MUNDY ,  Hamed AGHAJANI ,  Ian George SAYCE

IPC分类号： C03B17/04

摘要： An apparatus for the continuous production of hollow quartz-glass ingots, comprising a) a crucible or refractory tank for providing a softened quartz-glass mass having a dieorifice in the bottom of the crucible or refractory tank; b) a mandrel vertically drawing off the softened quartz-glass mass through a die toprovide a hollow quartz-glass ingot; and c) a cutting section for on-line cutting of the hollow quartz-glass ingot to a specificlength, characterized in that the apparatus comprises active means for cooling the internalsurface of the hollow quartz-glass ingot prior to the cutting station.

公开(公告)号：US11225429B2

公开(公告)日：2022-01-18

申请号：US16691909

申请日：2019-11-22

申请人： Heraeus Conamic UK Limited

发明人： Alan Mundy ,  Hamed Aghajani ,  Ian George Sayce

IPC分类号： C03B17/04

摘要： The present invention relates to a continuous method for the production of hollow quartz-glass ingots and an apparatus for said method, whereby the hollow quartz-glass ingots are cooled on the internal surface.

公开(公告)号：US20200165150A1

公开(公告)日：2020-05-28

申请号：US16691909

申请日：2019-11-22

申请人： Heraeus Conamic UK Limited

发明人： Alan MUNDY ,  Hamed AGHAJANI ,  Ian George SAYCE

IPC分类号： C03B17/04

摘要： The present invention relates to a continuous method for the production of hollow quartz-glass ingots and an apparatus for said method, whereby the hollow quartz-glass ingots are cooled on the internal surface.

公开(公告)号：US11485666B2

公开(公告)日：2022-11-01

申请号：US17566277

申请日：2021-12-30

申请人： HERAEUS CONAMIC UK LIMITED

发明人： Alan Mundy ,  Hamed Aghajani ,  Ian George Sayce

IPC分类号： C03B17/04

摘要： An apparatus for the continuous production of hollow quartz-glass ingots, comprising a) a crucible or refractory tank for providing a softened quartz-glass mass having a dieorifice in the bottom of the crucible or refractory tank; b) a mandrel vertically drawing off the softened quartz-glass mass through a die toprovide a hollow quartz-glass ingot; and c) a cutting section for on-line cutting of the hollow quartz-glass ingot to a specificlength, characterized in that the apparatus comprises active means for cooling the internalsurface of the hollow quartz-glass ingot prior to the cutting station.

公开(公告)号：US20210009461A1

公开(公告)日：2021-01-14

申请号：US16925944

申请日：2020-07-10

申请人： Heraeus Quarzglas GmbH & Co. KG ,  Heraeus Conamic UK Limited

发明人： Ian George Sayce ,  Michael Schindler ,  Fabian Schildt ,  Eduard Visnow

IPC分类号： C03C3/06 ,  C22B59/00 ,  C22B60/02 ,  C22B3/22 ,  B03B5/62 ,  C01B33/12 ,  C03C1/02

摘要： Described is a process for the refinement of a quartz powder, comprising the step of separating microparticles of refractory minerals, in particular minerals containing rare earth metal compounds, from the quartz powder by an elutriation step.