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公开(公告)号：US4214896A
公开(公告)日：1980-07-29
申请号：US38973
申请日：1979-05-14
CPC分类号： C22B23/0461 , B22F9/22 , C01G51/12 , C22B23/0446 , Y02P10/212
摘要： A method for producing extra fine cobalt metal powder (up to 1.7 FSSS) by the digestion of cobalt pentammine chloride in a dilute ammonium hydroxide solution to form a cobalt-containing precipitate, followed by reducing the precipitate in a hydrogen atmosphere to cobalt metal powder, is improved by: (a) adding NaOH to the mother liquor containing cobalt species in solution, to form a cobalt-containing precipitate; and (b) either heating the precipitate in hydrogen to reduce it to cobalt metal powder or recycling the precipitate as a cobalt source for the formation of cobalt pentammine chloride. The final cobalt metal powder is useful, for example, as a starting material in the manufacture of cemented carbides.
摘要翻译： 通过在稀氢氧化铵溶液中消化氯化钴钴以形成含钴沉淀物，然后在氢气气氛中将沉淀物还原成钴金属粉末，制备极细钴金属粉末（高达1.7PSSS）的方法， 通过以下方式得到改进：（a）在含有钴物质的溶液中加入NaOH，形成含钴沉淀物; 和（b）在氢气中加热沉淀物以将其还原成钴金属粉末或将沉淀物作为钴源再循环以形成氯化马克马克钴。 最终的钴金属粉末可用作例如硬质合金的制造中的起始原料。
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公开(公告)号：US5487949A
公开(公告)日：1996-01-30
申请号：US173591
申请日：1993-12-23
IPC分类号： C01G51/12 , C23C22/48 , C23C22/56 , C23C22/60 , C23C22/66 , C23C22/68 , C23C22/83 , B32B15/04
CPC分类号： C01G51/12 , C23C22/48 , C23C22/56 , C23C22/60 , C23C22/66 , C23C22/68 , C23C22/83 , Y10T428/265
摘要： A process for forming a cobalt conversion coating on a metal substrate, thereby imparting corrosion resistance and paint adhesion properties. The invention was developed as a replacement for the prior art chromic acid process. The process includes the steps of: (a) providing a cobalt conversion reaction solution comprising an aqueous, alkaline solution containing a soluble cobalt-III hexacoordinated complex, the concentration of the cobalt-III hexacoordinated complex being from about 0.1 mole per gallon of solution to the saturation limit of the cobalt-III hexacoordinated complex; and (b) contacting the substrate with the aqueous reaction solution for a sufficient amount of time, whereby the cobalt conversion coating is formed. The substrate may be aluminum or aluminum alloy, as well as Cd plating, Zn plating, Zn-Ni plating, and steel. The cobalt-III hexacoordinated complex may be present in the form of [Co(NH.sub.3).sub.6 ]X.sub.3 wherein X is Cl, Br, NO.sub.3, CN, SCN, 1/3PO.sub.4, 1/2SO.sub.4, C.sub.2 H.sub.3 O.sub.2, or 1/2CO.sub.3. (B.) A chemical conversion coating solution for producing a cobalt conversion coating on a metal substrate, the reaction solution comprising an aqueous, alkaline solution containing a soluble cobalt-III hexacoordinated complex, the concentration of the cobalt-III hexacoordinated complex being from about 0.1 mole per gallon of solution to the saturation limit of the cobalt-III hexacoordinated complex. The aqueous reaction solution may be prepared by a bath makeup sequence including the steps of: (a) dissolving an ammonium salt; (b) then dissolving a cobalt-II salt; and (c) then adding ammonium hydroxide (ammonia). (C.) A coated article exhibiting corrosion resistance and paint adhesion properties, the article including: (a) a metal substrate; and (b) a cobalt conversion coating formed on the substrate, the cobalt conversion coating including aluminum oxide Al.sub.2 O.sub.3 as the largest volume percent, and cobalt oxides CoO, Co.sub.3 O.sub.4, and Co.sub.2 O.sub.3.
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公开(公告)号：US5415687A
公开(公告)日：1995-05-16
申请号：US173593
申请日：1993-12-23
IPC分类号： C01G51/12 , C23C22/48 , C23C22/56 , C23C22/60 , C23C22/66 , C23C22/68 , C23C22/83 , C23C18/32
CPC分类号： C01G51/12 , C23C22/48 , C23C22/56 , C23C22/60 , C23C22/66 , C23C22/68 , C23C22/83 , Y10T428/265
摘要： (A.) A process for forming a cobalt conversion coating on a metal substrate, thereby imparting corrosion resistance and paint adhesion properties. The invention was developed as a replacement for the prior art chromic acid process. The process includes the steps of: (a) providing a cobalt conversion reaction solution comprising an aqueous, alkaline solution containing a soluble cobalt-III hexacoordinated complex, the concentration of the cobalt-III hexacoordinated complex being from about 0.1 mole per gallon of solution to the saturation limit of the cobalt-III hexacoordinated complex; and (b) contacting the substrate with the aqueous reaction solution for a sufficient amount of time, whereby the cobalt conversion coating is formed. The substrate may be aluminum or aluminum alloy, as well as Cd plating, Zn plating, Zn--Ni plating, and steel. The cobalt-III hexacoordinated complex may be present in the form of [Co(NH.sub.3).sub.6 ]X.sub.3 wherein X is Cl, Br, NO.sub.3, CN, SCN, 1/3PO.sub.4, 1/2SO.sub.4, C.sub.2 H.sub.3 O.sub.2, or 1/2CO.sub.3. (B.) A chemical conversion coating solution for producing a cobalt conversion coating on a metal substrate, the solution comprising an aqueous, alkaline reaction solution containing a soluble cobalt-III hexacoordinate complex, the concentration of the cobalt-III hexacoordinate complex being from about 0.1 mole per gallon of solution to the saturation limit of the cobalt-III hexacoordinate complex. The aqueous reaction solution may be prepared by a bath makeup sequence including the steps of: (a) dissolving an ammonium salt; (b) then dissolving a cobalt-II salt; and (c) then adding ammonium hydroxide (ammonia). (C.) A coated article exhibiting corrosion resistance and paint adhesion properties, the article including: (a) a metal substrate; and (b) a cobalt conversion coating formed on the substrate, the cobalt conversion coating including aluminum oxide Al.sub.2 O.sub.3 as the largest volume percent, and cobalt oxides CoO, Co.sub.3 O.sub.4, and Co.sub.2 O.sub.3.
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公开(公告)号：US5298092A
公开(公告)日：1994-03-29
申请号：US525800
申请日：1990-05-17
CPC分类号： C01G51/12 , C23C22/48 , C23C22/56 , C23C22/60 , C23C22/66 , C23C22/68 , C23C22/83 , Y10T428/265
摘要： (A.) A process for forming a cobalt conversion coating on a metal substrate, thereby imparting corrosion resistance and paint adhesion properties. The invention was developed as a replacement for the prior art chromic acid process. The process includes the steps of: (a) providing a cobalt conversion reaction solution comprising an aqueous, alkaline solution containing a soluble cobalt-III hexacoordinated complex, the concentration of the cobalt-III hexacoordinated complex being from about 0.1 mole per gallon of solution to the saturation limit of the cobalt-III hexacoordinated complex; and (b) contacting the substrate with the aqueous reaction solution for a sufficient amount of time, whereby the cobalt conversion coating is formed. The substrate may be aluminum or aluminum alloy, as well as Cd plating, Zn plating, Zn-Ni plating, and steel. The cobalt-III hexacoordinated complex may be present in the form of [Co(NH.sub.3).sub.6 ]X.sub.3 wherein X is Cl, Br, NO.sub.3, CN, SCN, Y.sub.3 PO.sub.4, SO.sub.4, C.sub.2 H.sub.3 O.sub.2, or Y.sub.2 CO.sub.3.
摘要翻译： （A）在金属基材上形成钴转化膜的方法，赋予耐腐蚀性和涂料附着性。 本发明被开发为现有技术的铬酸方法的替代物。 该方法包括以下步骤：（a）提供钴转化反应溶液，其包含含有可溶性钴-III六配位络合物的含水碱性溶液，钴-III六配位络合物的浓度为每加仑溶液约0.1摩尔 钴-Ⅲ六配位络合物的饱和极限; 和（b）使底物与水性反应溶液接触足够的时间，从而形成钴转化膜。 基板可以是铝或铝合金，以及Cd镀层，Zn镀层，Zn-Ni镀层和钢。 钴-Ⅲ六配位络合物可以以（Co（NH 3）6）X 3的形式存在，其中X是Cl，Br，NO 3，CN，SCN，Y 3 PO 4，SO 4，C 2 H 3 O 2或Y 2 CO 3。
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公开(公告)号：US5102633A
公开(公告)日：1992-04-07
申请号：US703211
申请日：1991-05-20
IPC分类号： C01G51/12
CPC分类号： C01G51/12
摘要： A method for reducing impurity levels of calcium, magnesium and/or silicon in hexammine cobalt halide compounds involves the addition of ferric ions and, optionally, soluble fluorides to an aqueous hexammine cobalt (III) chloride solution having a pH of at least 9. Insoluble compounds of magnesium fluoride, calcium fluoride, and/or ferric hydroxide and silicon coprecipitates are removed from the solution by filtration.
摘要翻译： 一种减少六卤化钴化合物中钙，镁和/或硅杂质含量的方法包括将铁离子和任选的可溶性氟化物加入到具有至少9的pH的六水氯化氨水溶液中。不溶性 通过过滤从溶液中除去氟化镁，氟化钙和/或氢氧化铁和硅共沉淀物的化合物。
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公开(公告)号：US4612039A
公开(公告)日：1986-09-16
申请号：US793420
申请日：1985-10-31
CPC分类号： B22F9/22 , C01G51/04 , C01G51/12 , C01P2006/80
摘要： A method is disclosed for producing pure cobalt metal powder. The method involves reducing a cobalt containing source material to produce an intermediate cobalt metal, contacting this intermediate with an ammoniacal ammonium halide solution and a catalyst with oxidation to form a solution of hexamminecobalt(III) ions, removing insoluble material, and adding a sufficient amount of a halide salt to the solution to precipitate hexamminecobalt(III) halide which is separated from the mother liquor. The hexamminecobalt(III) halide precipitate is dissolved in water and the pH is adjusted to greater than about 10 with a base, while the solution is heated at a sufficient temperature for a sufficient time to form an insoluble cobalt oxide containing material which is separated from its mother liquor and reduced to pure cobalt metal powder.
摘要翻译： 公开了一种用于生产纯钴金属粉末的方法。 该方法包括还原含钴原料以产生中间体钴金属，使该中间体与氨基卤化铵溶液和催化剂氧化形成六氨基钴（III）离子溶液，除去不溶物质，并加入足量的 的卤化物盐溶解以沉淀与母液分离的六氰基钴（III）卤化物。 将六氰酸钴（III）沉淀物溶于水中，用碱将pH调节至大于约10℃，同时将溶液在足够的温度下加热足够的时间以形成不溶性的含氧化钴的材料， 其母液还原成纯钴金属粉末。
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27.发明授权
公开(公告)号：US4515757A
公开(公告)日：1985-05-07
申请号：US582365
申请日：1984-02-22
IPC分类号： B01J23/94 , C01G1/00 , C01G31/00 , C01G39/00 , C01G41/00 , C01G51/00 , C01G51/12 , C01G53/00 , C01G53/12 , C22B3/00 , C22B3/26 , C22B3/28 , C22B3/30 , C22B7/00 , C22B23/00 , C22B23/02 , C22B34/22 , C22B34/34
CPC分类号： C01G53/12 , B01J23/94 , C01G31/003 , C01G39/003 , C01G41/003 , C01G51/003 , C01G51/12 , C01G53/003 , C22B23/005 , C22B23/026 , C22B23/0446 , C22B23/0461 , C22B3/0016 , C22B3/0017 , C22B3/0021 , C22B34/22 , C22B34/34 , C22B7/008 , C22B7/009 , C01P2002/82 , C01P2006/60 , Y02P10/214 , Y02P10/224 , Y02P10/234 , Y02P20/584
摘要： A method of stripping an organic extraction solvent containing quaternary alkyl ammonium complexes. The extraction solvent is contacted with an aqueous stripping solution having at least 75 g/l bicarbonate ion, while maintained at between pH 7 and 9 at a temperature of no more than 50.degree. C.
摘要翻译： 一种汽提含有季铵烷基铵络合物的有机萃取溶剂的方法。 将萃取溶剂与具有至少75g / l碳酸氢根离子的水性汽提溶液接触，同时在不超过50℃的温度下保持在pH7至9之间。
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公开(公告)号：US3714326A
公开(公告)日：1973-01-30
申请号：US3714326D
申请日：1971-05-17
申请人： FREEPORT MINERALS CO
发明人： MATSON R
CPC分类号： C01G53/12 , C01G51/12 , C22B23/0446
摘要： In an ammoniacal leaching process for the recovery of nickel and cobalt from reduced nickeliferous ores, copper contamination of the product liquor may be minimized or substantially avoided by controlling oxidation of ore constituents during aeration of a slurry of reduced ore and leach liquor.
摘要翻译： 在用于从还原的含镍矿石回收镍和钴的氨浸出方法中，通过在还原的矿石和浸出液的浆料通气期间控制矿石成分的氧化，产物液体的铜污染可以被最小化或基本上避免。
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公开(公告)号：US3227513A
公开(公告)日：1966-01-04
申请号：US18453062
申请日：1962-04-02
申请人： VYZK USTAV KOVU
发明人： MIROSLAV ALEXA , VACLAV REICHERT
IPC分类号： C01G51/12
CPC分类号： C01G51/12
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公开(公告)号：US2738266A
公开(公告)日：1956-03-13
申请号：US24888751
申请日：1951-09-28
申请人： CARON MARTINUS H
发明人： CARON MARTINUS H
IPC分类号： C01G51/12
CPC分类号： C01G51/12
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