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1. 发明授权

US4837376A Process for refining silicon and silicon purified thereby 失效
标题翻译：由此净化硅和硅的方法
公开(公告)号：US4837376A
公开(公告)日：1989-06-06
申请号：US104657
申请日：1987-10-05
申请人： Ingo Schwirtlich , Horst Lange , Werner Kannchen
发明人： Ingo Schwirtlich , Horst Lange , Werner Kannchen
IPC分类号： C01B33/02 , C01B33/037
CPC分类号： C01B33/037
摘要： Highly pure silicon is produced by refining impure silicon to remove deleterious impurities by contacting a melt of the impure silicon with a reacitve gas which comprises a gaseous halogen compound mixed with steam, hydrogen or a stem/hydrogen mixture.
摘要翻译：通过精炼不纯硅以除去不纯的杂质，通过使不纯硅的熔体与包含与蒸汽，氢或茎/氢混合物混合的气态卤素化合物的反应气体接触来生产高纯硅。

2. 发明授权

US4321237A Treating hydrolysis residues from preparation of titanium dioxide 失效
标题翻译：处理二氧化钛制备中的水解残留物
公开(公告)号：US4321237A
公开(公告)日：1982-03-23
申请号：US213707
申请日：1980-12-05
申请人： Peter Panek , Peter Woditsch , Werner Kannchen
发明人： Peter Panek , Peter Woditsch , Werner Kannchen
IPC分类号： C01G23/00 , B09B3/00 , C22B34/12
CPC分类号： C22B34/125 , Y02P10/212
摘要： In the process wherein a titanium-containing material is subjected to react with sulphuric acid to form a solid reaction mass from which the titanium values are recovered in solution by digestion with water or dilute sulphuric acid leaving behind a reaction residue and the reaction residue is thereafter treated to recover at least part of the titanium contained therein, the improvement wherein the treatment of the reaction residue is effected by contacting with sulphuric acid of a concentration greater than 86% a mixture by weight comprising about 5 to 95% of the reaction residue and 95 to 5% of a slag having a TiO.sub.2 content 60% by weight and a Ti(III) content of about 5 to 40% by weight, and thereafter eventually adding water, steam or dilute sulphuric acid to the mass to start the reaction.
摘要翻译：在使含钛材料与硫酸反应形成固体反应物质的过程中，通过用水或稀硫酸消解在溶液中回收钛值，留下反应残余物，然后反应残余物处理以回收其中所含的至少一部分钛，其改进在于其中反应残余物的处理通过与浓度大于86％的硫酸与包含约5至95重量％的反应残余物的混合物和 95〜5％的TiO 2含量为60重量％，Ti（III）含量为5〜40重量％左右的炉渣，最后向该物质中加入水，蒸汽或稀硫酸进行反应。

3. 发明授权

US4755220A Materials resistant to metal and salt melts, their production and their use 失效
标题翻译：耐金属和盐熔体的材料，其生产和使用
公开(公告)号：US4755220A
公开(公告)日：1988-07-05
申请号：US117329
申请日：1987-11-06
申请人： Peter Woditsch , Werner Kannchen , Horst Lange , Ingo Schwirtlich
发明人： Peter Woditsch , Werner Kannchen , Horst Lange , Ingo Schwirtlich
IPC分类号： C30B15/10 , B22C1/00 , C04B35/584 , C04B35/591 , C30B13/14 , C30B29/06 , C30B35/00 , C22C29/12
CPC分类号： C30B35/002 , C04B35/591
摘要： A material resistant to high temperature melts of metal and salt which comprises a composite material containing silicon nitride, silicon oxynitride, silicon dioxide and silicon prepared by(a) suspending silicon powder in SiO.sub.2 sol to form a pourable mass,(b) molding a workpiece from said mass,(c) hardening the molded workpiece, and(d) nitriding the hardened workpiece in a nitrogen atmosphere to form silicon nitride and silicon oxynitride to a degree that SiO.sub.2 and elemental silicon remain detectable in the nitrided workpiece,is useful as the material of construction for crucibles and tools for confining, handling and treating melts of metals or salts.
摘要翻译：耐高温熔融金属和盐的材料，其包含通过（a）将硅粉末悬浮在SiO 2溶胶中以形成可倾倒物质制备的包含氮化硅，氮氧化硅，二氧化硅和硅的复合材料，（b）模制工件（c）硬化成型工件，（d）在氮气气氛中氮化氮化硅和氮氧化硅至达到在氮化工件中保持可检测的程度的氮化硅和氮氧化硅，可用作用于坩埚的结构材料和用于限制，处理和处理金属或盐的熔融物的工具。

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