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1. 发明授权

US06440377B1 Method for reprocessing waste acid resulting from TiO2 production 失效
标题翻译：二氧化钛生产废弃酸处理方法
公开(公告)号：US06440377B1
公开(公告)日：2002-08-27
申请号：US09646340
申请日：2000-09-15
申请人： Gerhard Auer , Günter Lailach , Ulrich Meisen , Werner Schuy
发明人： Gerhard Auer , Günter Lailach , Ulrich Meisen , Werner Schuy
IPC分类号： C01F100
CPC分类号： C01G49/06 , C01F11/46 , C01P2006/12 , C01P2006/42 , C01P2006/60 , C01P2006/62 , C01P2006/63 , C01P2006/64
摘要： Process for the production of gypsum and also of an iron-oxide pigment from the waste acid that accumulates in the course of the production of titanium dioxide in accordance with the sulfate process, characterized in that in a first stage a partial neutralization of the waste acid is effected with a calcium compound subject to precipitation and optionally direct separation of gypsum, subsequently the remaining solution is neutralized further in a second stage subject to precipitation of a deposit containing Ti, Al, Cr, V and optionally Fe(III) and from the solution containing iron sulfate that is obtained after separation of the solids an iron-oxide pigment is produced in a third stage by addition of alkaline compounds and also of an oxidizing agent.
摘要翻译：用于生产石膏的方法以及根据硫酸盐法在二氧化钛生产过程中积聚的废酸中的氧化铁颜料的制备方法，其特征在于在第一阶段中将废酸部分中和由钙化合物进行沉淀和任选地直接分离石膏，随后在第二阶段中进一步中和残留的溶液，沉淀含有Ti，Al，Cr，V和任选的Fe（III）的沉积物，并从通过添加碱性化合物和氧化剂，在第三阶段中产生含有硫酸铁的含有硫酸铁的溶液，所述硫酸铁在分离固体后得到氧化铁颜料。

2. 发明授权

US06416723B1 Method for reprocessing waste acid to form gypsum and iron oxide 失效
标题翻译：后处理废酸形成石膏和氧化铁的方法
公开(公告)号：US06416723B1
公开(公告)日：2002-07-09
申请号：US09646280
申请日：2000-09-15
申请人： Gerhard Auer , Günter Lailach , Ulrich Meisen , Werner Schuy
发明人： Gerhard Auer , Günter Lailach , Ulrich Meisen , Werner Schuy
IPC分类号： C01F100
CPC分类号： C01C1/028 , C01F11/46 , C01G49/06 , C01P2006/12 , C01P2006/42 , C01P2006/60 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C04B11/262
摘要： Process for the production of gypsum and also of an iron-oxide pigment from the waste acid that accumulates in the course of the production of titanium dioxide in accordance with the sulfate process, characterized in that in a first stage a partial neutralization of the waste acid is effected with a calcium compound subject to precipitation and optionally direct separation of gypsum, subsequently the remaining solution is neutralized further in a second stage subject to precipitation of a deposit containing Ti, Al, Cr, V and optionally Fe(III) and from the solution containing iron sulfate that is obtained after separation of the solids an iron-oxide pigment is produced in a third stage by addition of alkaline compounds and also optionally addition of ammonia and also of an oxidizing agent, ammonia being liberated by addition of CaO and/or Ca(OH)2 from the solution containing (NH4)2SO4 that is obtained after separation of the iron-oxide pigment.
摘要翻译：用于生产石膏的方法以及根据硫酸盐法在二氧化钛生产过程中积聚的废酸中的氧化铁颜料的制备方法，其特征在于在第一阶段中将废酸部分中和由钙化合物进行沉淀和任选地直接分离石膏，随后在第二阶段中进一步中和残留的溶液，沉淀含有Ti，Al，Cr，V和任选的Fe（III）的沉积物，并从在第三阶段通过添加碱性化合物以及任选地加入氨以及氧化剂产生在固体分离出氧化铁颜料后得到的含有硫酸铁的溶液，通过添加CaO和/ 或Ca（OH）2从含有（NH 4）2 SO 4的溶液中分离出来）。

3. 发明授权

US06530987B1 Method for producing iron oxide pigments from waste acid resulting from TiO2 production 失效
标题翻译：由二氧化钛生产产生的废酸生产氧化铁颜料的方法
公开(公告)号：US06530987B1
公开(公告)日：2003-03-11
申请号：US09646372
申请日：2000-09-15
申请人： Gerhard Auer , Günter Lailach , Ulrich Meisen , Werner Schuy , Udo Julius
发明人： Gerhard Auer , Günter Lailach , Ulrich Meisen , Werner Schuy , Udo Julius
IPC分类号： C01G4906
CPC分类号： C01G49/08 , C01G49/06 , C01P2006/12 , C01P2006/42 , C01P2006/60 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C01P2006/80
摘要： Process for the preparation of iron oxide pigments from the waste acid resulting from the preparation of titanium dioxide by the sulfate process, characterized in that in a first stage a partial neutralization of the sulfuric acid contained in the waste acid is performed with compounds from the group comprising metallic iron and/or iron compounds, the sulfuric acid is optionally further neutralized with a further alkaline compound, the precipitate containing Ti, Al, Cr and V compounds is separated from the resultant reaction product and an iron oxide yellow pigment or iron oxide black pigment is precipitated from the resultant iron sulfate-containing solution by addition of alkaline compounds as well as an oxidizing agent, each pigment being able to be baked to form an iron oxide red pigment.
摘要翻译：用于通过硫酸盐法制备二氧化钛所产生的废酸制备氧化铁颜料的方法，其特征在于在第一阶段中，使用来自该组的化合物对废酸中所含的硫酸进行部分中和包括金属铁和/或铁化合物，任选地用另外的碱性化合物进一步中和硫酸，从所得反应产物中分离含有Ti，Al，Cr和V化合物的沉淀物，并将氧化铁黄色颜料或氧化铁黑通过加入碱性化合物和氧化剂从所得到的含硫酸铁溶液中沉淀颜料，每种颜料都可以被烘烤以形成氧化铁红颜料。

4. 发明授权

US06395165B2 Process for preparing perfluorinated organic compounds by electrochemical fluorination 失效
标题翻译：通过电化学氟化制备全氟化有机化合物的方法
公开(公告)号：US06395165B2
公开(公告)日：2002-05-28
申请号：US09887610
申请日：2001-06-22
申请人： Andreas Bulan , Joachim Herzig , Günter Lailach
发明人： Andreas Bulan , Joachim Herzig , Günter Lailach
IPC分类号： C25B308
CPC分类号： C25B3/08 , C07C209/74 , C07C211/15
摘要： A novel process for the continuous preparation of perfluorinated organic compounds by electrochemical fluorination of the parent non-fluorinated or partially fluorinated organic compounds using hydrogen fluoride having an arsenic content of less than about 10 ppm can be operated over a prolonged period of time without the electrode area-time yield decreasing over time.
摘要翻译：通过使用具有小于约10ppm的砷含量的氟化氢的母体非氟化或部分氟化的有机化合物的电化学氟化连续制备全氟化有机化合物的新方法可以在较长的时间内进行操作，而不需要电极面积 - 时间产量随时间而下降。

5. 发明授权

US06251358B1 Process for the preparation of sodium fluoride 失效
标题翻译：氟化钠的制备方法
公开(公告)号：US06251358B1
公开(公告)日：2001-06-26
申请号：US09364473
申请日：1999-07-30
申请人： Günter Lailach , Andreas Bulan , Günter Buss
发明人： Günter Lailach , Andreas Bulan , Günter Buss
IPC分类号： C01D302
CPC分类号： C01D3/02
摘要： Process for the preparation of sodium fluoride from sodium hydroxide solution and hydrogen fluoride or hydrofluoric acid, characterized in that
摘要翻译：从氢氧化钠溶液和氟化氢或氢氟酸制备氟化钠的方法，其特征在于将氢氧化钠溶液和氟化氢或氢氟酸分别加入到氢氧化钠溶液和氟化氢或氢氟酸的45重量％，优选20-40重量％，优选20-40重量％其中悬浮有固体NaF的4至50重量％，优选5至30重量％的饱和NaF溶液，其温度为20至80℃，优选30至60℃。

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