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1. 发明申请

WO2022051718A1 METHODS FOR PRODUCING AND PRODUCTS INCLUDING HOLLOW SILICA OR HOLLOW GLASS SPHERES 审中-公开
公开(公告)号：WO2022051718A1
公开(公告)日：2022-03-10
申请号：PCT/US2021/049290
申请日：2021-09-07
申请人： PLASSEIN TECHNOLOGIES LTD. LLC
发明人： LYNCH, David, Charles
IPC分类号： C03B19/10
摘要： Methods for producing a hollow spheres, optionally with a vacuum inside, are disclosed. An example method includes providing a seed with a core and a coating. The seed is heated to a temperature sufficient to transform the coating into a continuous shell having an interior and an exterior. The shell isolates the core from the exterior of the shell. The temperature is also sufficient to cause a reaction with the materials of the core, and the reaction converts the core to a gas within said shell. Controlling the rate of heating and the pressure surrounding the shell allows the shell to expand responsive to gas pressure within the shell. Cooling the shell causes the gases within the shell to revert to a solid form, thereby creating a vacuum within the shell. Products incorporating the hollow spheres are also disclosed.

2. 发明申请

WO2018128708A1 REFINING PROCESS FOR PRODUCING SOLAR SILICON, SILICON CARBIDE, HIGH-PURITY GRAPHITE AND HOLLOW SILICA MICROSPHERES 审中-公开
公开(公告)号：WO2018128708A1
公开(公告)日：2018-07-12
申请号：PCT/US2017/060380
申请日：2017-11-07
申请人： PLASSEIN TECHNOLOGIES LTD. LLC , LYNCH, David, Charles
发明人： LYNCH, David, Charles
IPC分类号： C01B33/025 , C01B32/97 , C01B32/205 , C01B33/18
摘要： A process for producing solar grade silicon from an impurity containing silica employs a plurality of plasma furnaces to perform a sequence of chemical reactions together with other process steps to produce solar grade silicon. The plasma furnace generates a stable dirty air, donut-shaped plasma into which particulate matter can be introduced. The plasma in the first two stages is formed by gases from the chemical reactions and in the third from inert gasses. Cyclone separators are used to extract particulates from the plasma in an inert gas that prevents reverse reactions as the particular cools.

3. 发明申请

WO2021041860A1 METHODS FOR PRODUCING HOLLOW CERAMIC SPHERES 审中-公开
公开(公告)号：WO2021041860A1
公开(公告)日：2021-03-04
申请号：PCT/US2020/048476
申请日：2020-08-28
申请人： PLASSEIN TECHNOLOGIES LTD. LLC
发明人： LYNCH, David, Charles
IPC分类号： A61K9/50 , A61K9/51 , B01J13/14
摘要： A method is presented for producing hollow microspheres of metal oxides (HMOMS) and/or hollow metal silicates microspheres (HMSMS) in a transforming solution. The transforming solution contains an atom M, or an M-ion, or a radical containing M. M in the transforming solution has the thermodynamic ability to replace silicon atoms in hollow silica microspheres (HSMS) and/or hollow glass microspheres (HGMS). The maximum temperature for transformation is set by the chemical physical properties of the transforming solution, and the viscosity of the silica in the walls of the HSMS and/or the glass in the walls of the HGMS. Viscosity, of enough magnitude, helps retain the desired shape of the hollow sphere as it is transformed to HMOMS and/or HMSMS. Non- spherical shapes can be produced by increasing the transformation temperature whereby the viscosity of the walls of the HSMS and/or the HGMS is reduced. Transformation can take place at a single temperature or at several temperatures, each temperature for a separate hold time. Methods are presented for: 1. production of micro composite castings and continuous production of sheets of micro composites, both consisting of hollow spheres in a matrix, 2. harvesting of HMOMS and HMSMS, and 3. specialty castings for anisotropic properties using 3 -dimensional printing.

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