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1.发明授权
公开(公告)号：US3985553A
公开(公告)日：1976-10-12
申请号：US572817
申请日：1975-04-29
申请人： Wasyl Kunda , Boris Rudyk , Michael Kohut
发明人： Wasyl Kunda , Boris Rudyk , Michael Kohut
CPC分类号： C22B15/0078 , C01C1/24 , C22B15/0006 , Y02P10/236 , Y10S423/15
摘要： The process involves subjecting finely divided particles of copper-bearing mineral sulphide ores or concentrates to a first stage leach in which the particles are leached in an aqueous ammoniacal ammonium carbonate solution in the presence of free oxygen to provide a first stage leach slurry which contains dissolved copper values. Residue is separated from the first stage leach slurry and is subjected to attrition in order to rub off an outer layer therefrom and expose surfaces of the residue beneath the layer. The resulting residue is passed to a second stage leach which is carried out in the same way as the first leach. Solution is removed from the second leach stage and is recycled to the first leach stage. The first stage leach solution is further treated for recovery of copper and ammonium sulphate.
摘要翻译： 该方法包括将含有铜的矿物硫化物矿石或浓缩物的细碎颗粒经受第一阶段浸出，其中在游离氧存在下将颗粒浸入含氨基碳酸铵水溶液中，以提供含有溶解的 铜值。 残留物与第一级浸出浆液分离，并进行磨损以从其上擦除外层，并将残留物的表面暴露在层下面。 将所得残余物通入第二阶段浸出物，其以与第一浸出物相同的方式进行。 溶液从第二浸出阶段除去并被再循环到第一浸出阶段。 进一步处理第一阶段浸出溶液以回收铜和硫酸铵。
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公开(公告)号：US4150095A
公开(公告)日：1979-04-17
申请号：US876778
申请日：1978-02-10
申请人： Wasyl Kunda , Herbert Veltman
发明人： Wasyl Kunda , Herbert Veltman
CPC分类号： C01G49/08 , C01C1/242 , C01P2004/51 , C01P2004/61 , C01P2006/12 , C01P2006/80
摘要： Ammonium jarosite is converted to hematite or magnetite and ammonium sulphate. The invention can be used for removing iron from a feed solution containing dissolved ferrous sulphate. The feed solution is treated with ammonium sulphate and oxygen to precipitate ammonium jarosite which is then separated from the treated solution to produce an ammonium jarosite slurry and a separated solution containing sulphate ions. The ammonium jarosite slurry is treated with ammonia to convert the ammonium jarosite to hematite or magnetite and ammonium sulphate solution. The ammonium sulphate solution is separated from the hematite or magnetite, and a portion of the separated ammonium sulphate solution is recycled to the ammonium jarosite precipitation step, the remaining portion of the separated ammonium sulphate solution being recovered.
摘要翻译： 黄钾铁矾转变为赤铁矿或磁铁矿和硫酸铵。 本发明可用于从含有溶解的硫酸亚铁的进料溶液中除去铁。 进料溶液用硫酸铵和氧气处理以沉淀黄钾铁矾，然后将其从经处理的溶液中分离出来，以产生一种含有黄钾铁矾的浆料和含有硫酸根离子的分离溶液。 用氨处理铵黄钾铁矾浆液将铵黄钾铁矾转化为赤铁矿或磁铁矿和硫酸铵溶液。 将硫酸铵溶液与赤铁矿或磁铁矿分离，一部分分离的硫酸铵溶液再循环至黄钾铁丹沉淀步骤，回收剩余部分的分离的硫酸铵溶液。
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公开(公告)号：US5162106A
公开(公告)日：1992-11-10
申请号：US856812
申请日：1992-03-24
申请人： Wasyl Kunda , Thomas H. Etsell
发明人： Wasyl Kunda , Thomas H. Etsell
CPC分类号： C22B11/046 , G03C5/3952 , Y02P10/214 , Y10S384/912
摘要： A process is disclosed for recovering silver sulfide from a spent photographic fixer solution, which contains silver. The process is particularly suited for treating the fixer solution in a manner which enables recycling of the solution giving rise to considerable reduction in cost of fixer solution and reduced environmental pollution. The process comprises introducing a hydrosulfide reagent into the fixer solution, which contains silver, to precipitate silver sulfide while maintaining pH and thiosulfate levels in the fixer to allow for reuse. The precipitate is isolated from the fixer solution to remove silver thereby and hence enable recycling of the fixer solution.
摘要翻译： 公开了一种用于从含有银的废光照相固色剂溶液中回收硫化银的方法。 该方法特别适用于以能够使溶液再循环的方式处理定影剂溶液，导致定影剂溶液的成本显着降低并且减少了环境污染。 该方法包括将硫氢化合物试剂引入到含有银的定影剂溶液中以沉淀硫化银，同时保持定影剂中的pH和硫代硫酸盐水平以允许再利用。 从定影剂溶液中分离出沉淀物以除去银，从而使定影剂溶液循环。
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公开(公告)号：US4129441A
公开(公告)日：1978-12-12
申请号：US766108
申请日：1977-02-07
申请人： Wasyl Kunda , Roderick H. Hitesman
发明人： Wasyl Kunda , Roderick H. Hitesman
IPC分类号： C22B11/00
CPC分类号： C22B11/04
摘要： Silver is precipitated from an aqueous sulphate solution containing dissolved silver and other metals at a temperature between about 60.degree. C. and about 125.degree. C. by hydrogen gas at a partial pressure between about 2 and about 5 kg/cm.sup.2.
摘要翻译： 在约60℃至约125℃的温度下，在约2至约5kg / cm 2之间的分压下，从含有溶解的银和其它金属的硫酸氢盐溶液中沉淀出银。
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5.发明授权Method for recovering silver from waste solutions containing thiosulfate compounds 失效从含有硫代硫酸盐化合物的废溶液中回收银的方法
公开(公告)号：US4755453A
公开(公告)日：1988-07-05
申请号：US910719
申请日：1986-09-24
申请人： Wasyl Kunda , Thomas H. Etsell
发明人： Wasyl Kunda , Thomas H. Etsell
CPC分类号： C22B11/046 , Y02P10/214 , Y10S210/912
摘要： In a process for recovering silver from spent photographic treatment solution comprises mixing nitric acid with a quantity of the treatment solution to precipitate from the solution silver sulfide. The silver sulfide may be then converted to pure silver. The improvement comprises mixing less than two parts of concentrated nitric acid solution with more than ten parts of the treatment solution to precipitate out of solution silver sulfide. The solution is filtered to remove the silver sulfide precipitate from the solution to yield a solid residue which includes silver sulfide.
摘要翻译： 在用于从废照相处理溶液中回收银的方法包括将硝酸与一定量的处理溶液混合以从溶液中沉淀出硫化银。 然后将硫化银转化成纯银。 该改进包括将少于两份浓硝酸溶液与10份以上的处理溶液混合以从溶液中沉淀出硫化银。 将溶液过滤以从溶液中除去硫化银沉淀物，得到包含硫化银的固体残余物。
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6.发明授权Process for the production of silver powder from silver chloride, sulphate or sulphide 失效从氯化银，硫酸盐或硫化物生产银粉的方法
公开(公告)号：US4388109A
公开(公告)日：1983-06-14
申请号：US264724
申请日：1981-05-18
申请人： Wasyl Kunda
发明人： Wasyl Kunda
摘要： A process for the production of elemental silver from silver chloride, silver sulphate or silver sulphide includes mixing the silver salt with sodium carbonate, and heating the mixture at a temperature in the range of from about 500.degree. C. to about 650.degree. C. to produce a product mixture comprising elemental silver powder and a product sodium salt selected from the group consisting of sodium chloride and sodium sulphate. The product mixture is then cooled, and the product sodium salt and any unreacted sodium carbonate removal from the elemental silver powder by washing with water.
摘要翻译： 从氯化银，硫酸银或硫化银生产元素银的方法包括将银盐与碳酸钠混合，并将混合物在约500℃至约650℃的温度下加热至 产生包含元素银粉末和选自氯化钠和硫酸钠的产物钠盐的产物混合物。 然后将产物混合物冷却，通过用水洗涤将产物钠盐和任何未反应的碳酸钠从元素银粉中除去。
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7.发明授权
公开(公告)号：US4306902A
公开(公告)日：1981-12-22
申请号：US179603
申请日：1980-08-19
申请人： Wasyl Kunda
发明人： Wasyl Kunda
摘要： A process for the production of elemental silver from silver chloride or silver sulphate includes mixing the silver salt with sodium carbonate, and heating the mixture at a temperature in the range of from about 500.degree. C. to about 650.degree. C. to produce elemental silver powder.
摘要翻译： 从氯化银或硫酸银生产元素银的方法包括将银盐与碳酸钠混合，并将混合物在约500℃至约650℃的温度范围内加热以产生元素银 粉末。
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8.发明授权
公开(公告)号：US4331469A
公开(公告)日：1982-05-25
申请号：US179613
申请日：1980-08-19
申请人： Wasyl Kunda
发明人： Wasyl Kunda
CPC分类号： C22B11/04
摘要： A process for the recovery of silver values from silver-containing material which also contains iron and arsenic includes leaching the material under oxidizing conditions at elevated temperature and pressure in aqueous nitric acid solution to dissolve a substantial amount of silver together with substantial amounts of arsenic, iron and other metals if present. The resultant leach solution is separated from undissolved leach residue and treated with a solution containing chloride ions to selectively precipitate substantially all dissolved silver as silver chloride without significant co-precipitation of other dissolved metals. The silver chloride precipitate is then separated from the remaining solution.
摘要翻译： 还含有铁和砷的含银材料回收银值的方法包括在氧化条件下在硝酸水溶液中在升高的温度和压力下浸出该材料，以将大量的银与大量的砷一起溶解， 铁和其他金属（如果存在）。 将所得浸出溶液与未溶解的浸出残余物分离，并用含有氯离子的溶液处理，以选择性地沉淀所有溶解的银作为氯化银，而不显着共沉淀其它溶解的金属。 然后将氯化银沉淀物与剩余的溶液分离。
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公开(公告)号：US3994716A
公开(公告)日：1976-11-30
申请号：US456482
申请日：1974-03-29
申请人： Winfried J. Huppmann , Wasyl Kunda
发明人： Winfried J. Huppmann , Wasyl Kunda
CPC分类号： C22B23/0461 , B22F9/22 , H01F1/061
摘要： A process is described for producing cobalt powder having a particle size of about 2 microns or smaller. The process involves two basic operations: Firstly, finely divided cobaltous carbonate is prepared by precipitation from a cobaltous ammine-ammonium sulphate solution by reacting the solution with carbon dioxide. Secondly, the cobalt carbonate precipitate is separated from the solution and is dry-reduced with hydrogen under controlled conditions of time and temperature to produce finely divided elemental cobalt powder. Cobalt powders produced in accordance with the invention are particularly suitable for manufacture of sintered carbide products as well as for use in magnetic products such as magnetic inks and tapes.
摘要翻译： 描述了一种用于生产粒度为约2微米或更小的钴粉末的方法。 该方法包括两个基本操作：首先，通过使溶液与二氧化碳反应，从钴铵铵 - 硫酸铵溶液中沉淀制备细分碳酸钴。 其次，将碳酸钴沉淀物从溶液中分离出来，并在时间和温度的受控条件下用氢气干燥，以产生细分的元素钴粉末。 根据本发明生产的钴粉特别适用于制造烧结碳化物产品以及用于诸如磁性油墨和磁带的磁性产品。
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公开(公告)号：US3975217A
公开(公告)日：1976-08-17
申请号：US530111
申请日：1974-12-06
申请人： Wasyl Kunda , Winfried J. Huppmann
发明人： Wasyl Kunda , Winfried J. Huppmann
CPC分类号： G11B5/70615 , H01F1/061 , H01F1/442 , Y10T428/12181
摘要： A cobalt powder product is described which is composed of cobalt particles about 0.8 microns or smaller in size and have refractory oxide particles fixed on the surfaces thereof. The powder is particularly suitable for manufacture of sintered carbide products as well as for use in magnetic products such as magnetic inks and tapes.
摘要翻译： 描述了钴粉末产品，其由尺寸为约0.8微米或更小的钴颗粒组成并且具有固定在其表面上的难熔氧化物颗粒。 该粉末特别适用于烧结碳化物产品的制造以及磁性产品如磁性油墨和胶带的使用。
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