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公开(公告)号：US11878937B2
公开(公告)日：2024-01-23
申请号：US16925944
申请日：2020-07-10
CPC分类号： C03C3/06 , B03B5/623 , C01B33/12 , C03C1/022 , C22B3/22 , C22B59/00 , C22B60/0252 , C22B60/0291 , C01P2004/03 , C01P2004/61 , C01P2006/80 , C03C2201/02
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.
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公开(公告)号：US11225429B2
公开(公告)日：2022-01-18
申请号：US16691909
申请日：2019-11-22
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.
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公开(公告)号：US11485666B2
公开(公告)日：2022-11-01
申请号：US17566277
申请日：2021-12-30
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.
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公开(公告)号：US20210009461A1
公开(公告)日：2021-01-14
申请号：US16925944
申请日：2020-07-10
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.
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