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1.发明授权Oxidation process for releasing metal values in which nitric acid is regenerated in situ 失效用于释放原位再生硝酸的金属值的氧化工艺
公开(公告)号：US4834793A
公开(公告)日：1989-05-30
申请号：US14815
申请日：1987-02-13
CPC分类号： C22B3/065 , C22B11/04 , C22B15/0073 , C22B19/22 , C22B23/0438 , C22B34/34 , C22B34/36 , C22B60/0239 , Y02P10/234 , Y02P10/236
摘要： An oxidation process for releasing a metal of interest in an ore is described. The process is especially useful for releasing a metal of interest entrapped in a refractory ore. The process comprises reacting the ore with nitric acid until sufficient oxidation has occurred to release the metal of interest so that it may be recovered by conventional techniques. Nitric acid is regenerated in situ by aerating the liquid medium and contacting it with the off gases generated by the oxidation. The process is continuous and the nitric acid is recycled to the reactor preferably after removal of accumulated sulfate.
摘要翻译： 描述了一种在矿石中释放感兴趣的金属的氧化工艺。 该方法对于释放夹带在难熔矿石中的感兴趣的金属特别有用。 该方法包括使矿石与硝酸反应，直到发生足够的氧化以释放感兴趣的金属，使得其可以通过常规技术回收。 硝酸通过充气液体介质并与氧化产生的废气接触而原位再生。 该方法是连续的，并且将硝酸再循环到反应器中，优选在除去积聚的硫酸盐之后。
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公开(公告)号：US5013359A
公开(公告)日：1991-05-07
申请号：US264790
申请日：1988-10-31
摘要： A process for recovering gold from a refractory sulfidic ore which has been suspended in an aqueous slurry and oxidized using nitric acid so that substantially all of the gold in the ore is made available for recovery and at least a portion of the sulfidic components present during the oxidation are oxidized to elemental sulfur, comprises bubbling air as a discontinuous phase upwardly through the oxidized slurry, thereby creating a froth containing elemental gold and sulfur. The froth is separated from the slurry to provide a concentrate, and the gold is recovered from the concentrate.
摘要翻译： 从难熔的硫化矿石中回收金的方法，该方法已经悬浮在含水浆料中并用硝酸氧化，使得矿石中的基本上所有的金都可用于回收，并且至少部分硫化成分存在于 氧化被氧化成元素硫，包括通过氧化浆液将空气作为不连续相向上鼓泡，从而产生含有元素金和硫的泡沫。 从浆液中分离泡沫以提供浓缩物，并且从浓缩物中回收金。
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3.发明授权Reduction of zinc oxide from complex sulfide concentrates using chloride processing 失效使用氯化物处理从复合硫化物浓缩物还原氧化锌公开(公告)号：US06843976B2
公开(公告)日：2005-01-18
申请号：US09793734
申请日：2001-02-27
申请人： Carole Allen , Serge Payant , Peter Kondos , Gezinus Van Weert
发明人： Carole Allen , Serge Payant , Peter Kondos , Gezinus Van Weert
CPC分类号： C22B13/045 , C22B3/10 , C22B19/22 , C22B19/26 , C22B19/34 , Y02P10/234
摘要： An apparatus and a process for producing zinc oxide from a zinc-bearing material are provided. The process comprises the steps of leaching the complex sulfide material with hydrochloric acid, ferric chloride, and oxygen; precipitating iron from the leach solution using lime and oxygen; removing copper, silver, cadmium, cobalt and lead from the leach solution by cementation with zinc dust; precipitating zinc oxide from the leach solution using lime; and regenerating HCl from a calcium chloride leach filtrate solution to regenerate hydrochloric acid and precipitate gypsum. Related processes for recovering copper, silver, lead, and iron from complex sulfide materials and for recovering lead from residue by solubilizing lead chloride and precipitating it with lime are also provided.
摘要翻译： 提供了一种从含锌材料制备氧化锌的设备和方法。 该方法包括用盐酸，氯化铁和氧气将复合硫化物物质浸出的步骤; 使用石灰和氧气从浸出溶液中沉淀铁; 通过与锌粉粘结从浸出溶液中除去铜，银，镉，钴和铅; 使用石灰从浸出溶液中沉淀出氧化锌; 并从氯化钙浸出滤液中再生HCl以再生盐酸并沉淀石膏。 还提供了从复杂的硫化物材料中回收铜，银，铅和铁以及通过溶解氯化铅并用石灰沉淀从渣中回收铅的相关方法。
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4.发明授权Production of zinc oxide from complex sulfide concentrates using chloride processing 失效使用氯化物处理从复合硫化物精矿生产氧化锌公开(公告)号：US06395242B1
公开(公告)日：2002-05-28
申请号：US09410102
申请日：1999-10-01
IPC分类号： C22B1900
摘要： The present invention relates to an apparatus and a process for producing zinc oxide from a zinc-bearing material. The process according to the present invention comprises the steps of leaching the complex sulfide material with hydrochloric acid and oxygen; precipitating iron from the leach solution using magnesium oxide and oxygen; removing copper, silver, cadmium, cobalt and lead from the leach solution by cementation with zinc dust; precipitating zinc oxide from the leach solution using magnesium oxide; and spray roasting the remaining magnesium chloride leach solution to regenerate hydrochloric acid and magnesium oxide. The present invention further relates to processes for recovering copper, silver, lead, and iron from complex sulfide materials.
摘要翻译： 本发明涉及一种从含锌材料制备氧化锌的设备和方法。 根据本发明的方法包括用盐酸和氧气将复合硫化物物质浸出的步骤; 使用氧化镁和氧从浸出溶液中沉淀铁; 通过与锌粉粘结从浸出溶液中除去铜，银，镉，钴和铅; 使用氧化镁从浸出溶液中沉淀出氧化锌; 并喷洒焙烧剩余的氯化镁浸出溶液以再生盐酸和氧化镁。 本发明还涉及从复合硫化物材料中回收铜，银，铅和铁的方法。
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