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1. 发明申请

WO2004081244A8 METHOD FOR THE REFINEMENT OF GOLD 审中-公开
标题翻译：炼制黄金的程序
公开(公告)号：WO2004081244A8
公开(公告)日：2004-11-11
申请号：PCT/DE2004000465
申请日：2004-03-09
申请人： OTB OBERFLAECHENTECHNIK BERLIN , HERRMANN SIGRID , LANDAU UWE
发明人： HERRMANN SIGRID , LANDAU UWE
IPC分类号： C22B1/02 , C22B3/00 , C22B3/06 , C22B3/10 , C22B9/14 , C22B11/00 , C22B11/02 , C22B11/06
CPC分类号： C22B3/06 , C22B9/14 , C22B11/00 , C22B11/021 , C22B11/042 , Y02P10/214 , Y02P10/234
摘要： The invention relates to a method for refining gold containing metallic impurities. According to said method, the proportion of metal oxides is increased in a targeted manner by annealing the gold at preferably between 450 and 550 DEG C for between 1.5 to 2.5 hours. The gold is then treated with concentrated hydrochloric acid at a controlled redox potential, enabling a large part of the metal oxides and metals to dissolve immediately. In order to create identical reaction conditions, the gold used preferably has essentially the same particle size or gold concentration. Air can then be guided through the softened gold, in order to oxidise the previously formed monovalent copper chloride in a strong exothermic reaction. Said reaction is monitored by measuring the temperature and is optionally controlled as required. The gold is then post-treated with concentrated hydrochloric acid and a small amount of hydrogen peroxide at a controlled redox potential, and the purification effect can be controlled by the mixing ratio of said two substances. The refined gold is then washed with concentrated hydrochloric acid and deionised water and, according to requirement, is either further purified by a subsequent fine refinement method or is directly supplied elsewhere for a different use. The inventive method is especially suitable for the refinement of powdery, ground, small-particle, film-type or wire-shaped gold.
摘要翻译：描述了用于精炼金属污染的金的方法，其中首先通过在优选约450-550℃下将金退火1.5-2.5小时来故意增加金属氧化物的比例。随后，使用浓盐酸对金进行可控氧化还原电位处理，该盐酸已经溶解了大部分现有的金属氧化物和金属。为了产生相同的反应条件，优选使用基本上具有相同晶粒尺寸或金浓度的金。通过润湿的金现在可以通过空气氧化先前形成的单价氯化铜，发生高度放热的反应。通过测量温度来监测该反应，并根据需要任选地进行控制。最后用浓盐酸和少量过氧化氢控制氧化还原电位，从而可以通过这两种物质的混合比来控制清洗效果。精制的金最终用浓盐酸和去离子水洗涤，并根据需要进一步纯化，或者通过后续的Feinstraffinationsverfahren或直接用于另一用途。所描述的方法特别适用于精制粉状，粉碎的小颗粒，箔状或丝状金。

2. 发明申请

WO03033771A2 METHOD AND SYSTEM FOR SELECTIVE ELECTRO-COATING OF THE SURFACES OF METALS 审中-公开
标题翻译：方法和系统金属表面选择性电镀层
公开(公告)号：WO03033771A2
公开(公告)日：2003-04-24
申请号：PCT/DE0203833
申请日：2002-10-11
申请人： OTB OBERFLAECHENTECHNIK BERLIN , LANDAU UWE , WIEDENBECK RAINER
发明人： LANDAU UWE , WIEDENBECK RAINER
IPC分类号： B41J3/407 , C25D5/02
CPC分类号： C25D5/022 , B41J3/407
摘要： Disclosed is a method for selective electro-coating of the surfaces of metals, wherein the surface areas which not are to be coated are initially masked by contactless application of a liquid dielectric and, subsequently, the non-masked surface areas are electroplated. The dielectric is applied in a very precise manner in very fine droplets (14) having a substantially identical droplet size of between 3 and 70 micrometers and a contour acuity of less or equal to 80 micrometers. The droplets (14) are initially electrically charged and are then controlled according to requirements upon application by an electric field. The dielectric can be applied in at least one continuous interruption-free strip (16) or in a controlled discontinuous manner, enabling masking layers (16) of almost all conceivable forms to be produced, especially for flat, flat-stamped or embossed metal strips (10). After electroplating has occurred, the applied dielectric (16) is removed in a residue-free state in an aqueous solution with microdisperse additives. The invention also relates to an electroplating system for carrying out the above-mentioned method.
摘要翻译：本发明提供了一种用于金属表面的选择性电镀层被描述，首先，在表面上的非掩蔽区域以通过液体电介质的非接触式应用被涂覆，然后将未屏蔽的表面区域被镀锌。电介质在这种情况下施加在具有基本上相同的液滴尺寸3-70微米非常细的液滴（14），并用一个轮廓的清晰度是小于或等于80微米非常精确的，其中，所述液滴（14）的电场的施加期间根据需要首先被带电，然后被控制。该电介质可以在本文中不连续地施加和控制都在至少一个连续的不间断的带（16），从而，特别是用于平坦，平面冲压或冲切Metaalbändern可以产生几乎任何期望的形状（10），掩蔽层（16）。在含有微分散聚集体的水溶液电镀沉积的电介质（16）后无残留再次除去。还有记载的Galvanisierungsystem用于实现该方法。

3. 发明申请

WO2004081245A8 METHOD FOR THE FINE REFINEMENT OF GOLD 审中-公开
标题翻译： GOLD FEINSTRAFFINATION方法
公开(公告)号：WO2004081245A8
公开(公告)日：2004-11-11
申请号：PCT/DE2004000466
申请日：2004-03-09
申请人： OTB OBERFLAECHENTECHNIK BERLIN , HERRMANN SIGRID , LANDAU UWE
发明人： HERRMANN SIGRID , LANDAU UWE
IPC分类号： C22B3/00 , C22B3/10 , C22B3/44 , C22B7/00 , C22B9/02 , C22B11/00 , C22B11/06
CPC分类号： C22B3/44 , C22B3/10 , C22B7/007 , C22B11/042 , C22B11/046 , Y02P10/214 , Y02P10/234
摘要： The invention relates to a method for the fine refinement of gold containing metallic impurities, According to said method, the gold to be refined is first dissolved in hydrochloric acid and hydrogen peroxide. The dissolution of the gold is controlled by separate dosing of said substances and/or by means of the mixture ratio thereof, enabling gold having an increasingly high purity to be obtained by successive dosing. The depletion of the impurities can be controlled by targeted heat supply and/or by influencing the heat rejection. The dissolved gold is then precipitated by stirring a sodium bisulfate solution into the hydrochloric acid gold solution, the precipitation of the gold being stimulated by avoiding an excess of sodium bisulfite solution. The precipitation is monitored by measuring the redox potential and is controlled by adapted dosing of the sodium bisulfite solution. The precipitated gold is then filtered again, washed and dried and provided for another use. The dissolution of the gold creates waste gas containing chlorine and a small proportion of metallic impurities. Said impurities are washed out of the waste gas in a washing device and are recovered from the used wash solution, while the chlorine is depleted from the waste gas by reaction with powdery gold in a corresponding filter device. The inventive method is especially suitable for refining powdery, ground, small-particle, film-type or wire-shaped gold.
摘要翻译：描述了一种用于金属性Feinstraffination污染金，其特征在于，待精炼的金首先被溶解在盐酸和过氧化氢的方法。金的溶解是由这些物质和/或单独的计量控制其混合比率，其中可以得到金与由连续计量越来越高的纯度。杂质的耗尽可以通过热和/或影响的热耗散选择性应用来控制，将溶解的金随后通过在盐酸金溶液，其中，所述金的沉淀是通过避免过量的亚硫酸氢钠的青睐搅拌亚硫酸氢钠的溶液中沉淀出来。沉淀是通过测量氧化还原电势监视并通过合适的添加亚硫酸氢钠溶液的控制。将沉淀的金随后过滤，洗涤并干燥，然后供给至进一步使用。当金含氯废气的具有金属杂质少量松动形成。这些在废气的洗涤设备洗涤，并回收从所使用的洗涤液，而氯通过与粉状金反应在相应的过滤器从排气装置耗尽。所描述的方法特别用于精炼，粉碎性，小颗粒合适的，薄膜状或线状金粉末。

4. 发明申请

WO0001863A3 METHOD FOR RECOVERING PRECIOUS METALS 审中-公开
标题翻译：回收贵金属的方法
公开(公告)号：WO0001863A3
公开(公告)日：2000-06-15
申请号：PCT/DE9901827
申请日：1999-06-23
申请人： OTB OBERFLAECHENTECHNIK BERLIN , HERRMANN SIGRID , LANDAU UWE
发明人： HERRMANN SIGRID , LANDAU UWE
IPC分类号： C22B3/42 , C25C1/20 , C25D21/18 , C25F5/00 , C23F1/44 , C22B11/08 , C23F1/46
CPC分类号： C25C1/20 , C25D21/18 , C25F5/00 , Y02P10/212
摘要： The invention relates to a method for detaching precious metal layers from a correspondingly coated material by dissolving the precious metals in a salt-containing alkali cyanide solution containing oxidizing agents. According to the invention the alkali cyanide solution continuously flows around the material positioned in a dissolution unit (22), preferably contains at least an alkali sulfate, an alkali metaborate and/or a nitroaromatic compound and for obtaining and/or regenerating the oxidizing agent is electrolytically oxidized in a closed circuit in an electrolytic cell (10). The method provided for by the invention there requires minimal quantities of chemicals, which results in correspondingly low recycling costs. If a nitroaromatic compound is used the oxidized solution is stable to such a degree that the dissolution process in the dissolution unit (22) and the oxidizing process in the electrolytic cell (10) can be carried out independently of each other. The precious metals dissolved in the alkali cyanide solution, such as gold, silver, palladium or such like, and/or impurities are preferably separated out electrolytically in the cathode compartment (28) of a further electrolytic cell (26) which chamber is separated from the corresponding anode compartment (30), which is filled with a powerful electrolyte, for example a 10 % potassium hydroxide solution, by a cation exchange membrane (32). Said membrane is preferably coated with a precious metal, notably gold, since this permits extremely high degrees of purity of up to 99 % during separation.
摘要翻译：描述了通过将贵金属溶解在含有氧化剂的碱金属卤化物酸溶液中从适当涂覆的材料剥离贵金属层的方法。中的释放装置（22）设置的材料是在这种情况下电解连续地流动从周围的碱金属氰化物溶液，优选包含至少一种碱金属硫酸盐，Alkalimetaborat和/或硝基芳族化合物和用于在电解电池（10）的回收和/或氧化剂的再生在闭合回路中被氧化。因此，本发明的方法具有最少量的化学品和相应的低处理成本。在使用硝基芳族化合物aufoxidierte溶液非常稳定，所述释放装置（22），并在电解电池（10）的氧化过程的释放过程也可以独立进行。溶解在碱性氰化物溶液中的贵金属，例如金，银，钯等和/或杂质，优选电解沉积在的另一个电解池（26）的阴极室（28）与强电解质诸如例如 10％氢氧化钾溶液，充满阳极的隔室（30）由阳离子交换膜（32）隔开。这优选用贵金属，特别是金涂覆，因为这可以在沉积中实现高达99％的非常高的纯度。

5. 发明申请

WO9940238A3 METHOD FOR ELECTRICALLY REGENERATING CONTAMINATED RHODIUM SOLUTIONS 审中-公开
标题翻译：法电解再生的无公害铑解决方案
公开(公告)号：WO9940238A3
公开(公告)日：1999-09-30
申请号：PCT/DE9900316
申请日：1999-02-05
申请人： OTB OBERFLAECHENTECHNIK BERLIN , HERRMANN SIGRID , LANDAU UWE
发明人： HERRMANN SIGRID , LANDAU UWE
IPC分类号： C25D21/18
CPC分类号： C25D21/18
摘要： The invention relates to a method for electrically regenerating rhodium solutions, designed especially for regenerating rhodium solutions containing sulphuric acid and/or phosphoric acid or rhodium chloride solutions. The solution to be regenerated is introduced in the anode area (12) of an electrolytic cell (10), which is separated from the associated cathode area (14) by an ion exchange membrane (16), said cathode area being filled with a dilute acid having a good conductivity. The rhodium solution pH is increased so as to reach a value greater than 10, preferably in the range from 10 to 14, by adding an alkaline solution, i.e. a concentrated hydroxide potassium solution. Electrolysis is carried out at electric densities that are so high that the trivalent rhodium of the rhodium solution is oxidised to form an hexavalent rhodium, and possible impurities are depleted by the ion exchange membrane (16) in the catholytes. Hexavalent rhodium is transferred in the cathode area at a speed slightly smaller than trivalent rhodium, and therefore no noticeable rhodium depletion can be observed. This is particularly true when pH during electrolysis is maintained at a value permanently greater than 1.5 by means of proper addition of alkaline solution.
摘要翻译：描述了一种用于铑溶液的电解再生，这是特别适合的硫和/或磷酸或Rhodiumchloridlösungen的铑溶液的再生方法。要被再生的溶液在这种情况下在电解池（10），其从所述填充分离用稀的阳极室（12）中进行的，高导电酸相关联的阴极空间（14）通过阳离子交换膜（16）。铑溶液的pH值是在这种情况下通过添加碱溶液如例如浓缩的氢氧化钾溶液增大到超过10的值，用10个14位于之间的优选范围。电解然后在三价铑被氧化成六价铬铑在铑溶液和可能存在的通过阳离子交换膜（16）的杂质例如高电流密度在阴极电解液被耗尽进行。由于六价铬铑以慢得多的速率进入阴极隔室作为三价铑转移，这发生时，铑的含量没有明显的损耗。当pH值由相应的碱加成溶液的电解过程中总是高于1.5保持这是特别真实。

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