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公开(公告)号：US07935171B2
公开(公告)日：2011-05-03
申请号：US12438418
申请日：2007-08-22
CPC分类号： C22B23/043 , C22B3/42 , C22B23/0461 , C22B23/0484 , Y02P10/234
摘要： A process for producing a metallic nickel product with a low iron content, that includes: (i) providing an acidic product liquor; (ii) subjecting the acidic product liquor to an ion exchange process to absorb the nickel and part of the iron; (iii) eluting the nickel and iron to produce an eluate containing the nickel and iron. (iv) neutralising the eluate to leave an iron depleted eluate; (v) neutralising the iron depleted eluate to cause precipitation of nickel hydroxide containing low iron; (vi) calcining the nickel hydroxide to convert it to nickel oxide; (vii) subjecting the nickel oxide to direct smelting in the presence of a reductant to produce a molten nickel phase; and (viii) refining the molten nickel phase by oxidation to produce a metallic nickel product with low iron content.
摘要翻译： 一种制备铁含量低的金属镍产品的方法，包括：（i）提供酸性产物液; （ii）使酸性产物液体进行离子交换过程以吸收镍和部分铁; （iii）洗脱镍和铁以产生含有镍和铁的洗脱液。 （iv）中和洗脱液以留下耗尽铁的洗脱液; （v）中和不含铁的洗脱液，使含有低铁的氢氧化镍沉淀; （vi）煅烧氢氧化镍以将其转化为氧化镍; （vii）使镍氧化物在还原剂存在下直接熔炼以产生熔融的镍相; 和（viii）通过氧化来精炼熔融镍相以产生具有低铁含量的金属镍产品。
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公开(公告)号：US20100154593A1
公开(公告)日：2010-06-24
申请号：US12438418
申请日：2007-08-22
CPC分类号： C22B23/043 , C22B3/42 , C22B23/0461 , C22B23/0484 , Y02P10/234
摘要： A process for producing a metallic nickel product with a low iron content, including the steps of: (i) providing an acidic product liquor containing at least nickel and iron; (ii) subjecting said acidic product liquor to an ion exchange process wherein an ion exchange resin selectively absorbs said nickel and part of the iron from said product liquor; (iii) eluting the nickel and iron from said resin with an acidic solution to produce an eluate containing said nickel and iron. (iv) neutralising said eluate to a pH value in the range from 2.5 to 3.5 to cause precipitation of a substantial amount of said iron, leaving an iron depleted eluate; (v) neutralising the iron depleted eluate to a pH value in the range from 7 to 8 to cause precipitation of nickel hydroxide containing low iron; (vi) calcining said nickel hydroxide to convert it to nickel oxide; (vii) subjecting said nickel oxide to direct smelting in the presence of a reductant to produced a molten nickel phase; and (viii) refining said molten nickel phase by oxidation to produce a metallic nickel product with low iron content.
摘要翻译： 一种制备铁含量低的金属镍产品的方法，包括以下步骤：（i）提供至少含有镍和铁的酸性产物液; （ii）使所述酸性产物液体进行离子交换过程，其中离子交换树脂从所述产物液体中选择性地吸收所述镍和部分铁; （iii）用酸性溶液从所述树脂中洗脱镍和铁，以产生含有所述镍和铁的洗脱液。 （iv）将所述洗脱液中和到2.5至3.5的pH值以引起大量所述铁沉淀，留下铁耗尽的洗脱液; （v）将贫铁洗脱液中和至pH7至8，使含有低铁的氢氧化镍沉淀; （vi）煅烧所述氢氧化镍以将其转化为氧化镍; （vii）使所述镍氧化物在还原剂存在下直接熔炼以产生熔融镍相; 和（viii）通过氧化来精炼所述熔融镍相以产生具有低铁含量的金属镍产品。
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3.发明申请公开(公告)号：US20080016986A1
公开(公告)日：2008-01-24
申请号：US11687256
申请日：2007-03-16
申请人： Houyuan Liu , Alexey Duarte , Wolf Meihack , Ivan Ratchev
发明人： Houyuan Liu , Alexey Duarte , Wolf Meihack , Ivan Ratchev
CPC分类号： C22B23/021 , C22B3/42 , C22B3/44 , C22B5/10 , C22B23/043 , C22B23/0453 , C22B23/0461 , C22B23/0476 , C22B23/06 , Y02P10/216 , Y02P10/234
摘要： A process for the production of ferro-nickel or nickel matte from a product liquor solution containing at least nickel, cobalt, iron and acid soluble impurities, said process including the steps of: (a) contacting the product liquor solution (7) containing the nickel, cobalt, iron and acid soluble impurities with an ion exchange resin (8), wherein the resin selectively absorbs nickel and iron from the solution leaving the cobalt and the acid soluble impurities in the raffinate (9); (b) stripping the nickel and iron from the resin with a sulfuric acid solution to produce an eluate (11) containing nickel and iron; (c) neutralising the eluate to precipitate a mixed nickel iron hydroxide product (13); and (d) reducing and smelting the mixed nickel iron hydroxide product to produce ferro-nickel (29) or nickel matte (24).
摘要翻译： 从含有至少镍，钴，铁和酸可溶性杂质的产品液体溶液中生产铁镍或镍锍的方法，所述方法包括以下步骤：（a）使含有 镍，钴，铁和酸可溶性杂质与离子交换树脂（8）反应，其中树脂选择性地从溶液中吸收镍和铁，留下残留钴中的酸和可溶性杂质（9）; （b）用硫酸溶液从树脂中剥离镍和铁以制备含有镍和铁的洗脱液（11）; （c）中和洗脱液以沉淀混合的氢氧化镍氢氧化物产物（13）; 和（d）还原和熔炼混合的氢氧化镍氢氧化物产物以产生铁镍（29）或镍锍（24）。
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公开(公告)号：US20080011126A1
公开(公告)日：2008-01-17
申请号：US11839876
申请日：2007-08-16
申请人： Alexey Duarte , Houyuan Liu , Ivan Ratchev
发明人： Alexey Duarte , Houyuan Liu , Ivan Ratchev
CPC分类号： C21B15/00 , C22B1/244 , C22B3/42 , C22B5/12 , C22B23/023 , C22B23/0453 , Y02P10/234
摘要： A process for producing a ferronickel product from a mixed nickel iron hydroxide product, said process including the steps of: providing a mixed nickel iron hydroxide product; pelletising the mixed nickel iron hydroxide product to produce nickel iron hydroxide pellets; calcining the nickel iron hydroxide pellets to produce mixed nickel iron oxide pellets; and reducing the nickel iron oxide pellets with one or more reducing gases at high temperatures to produce ferronickel pellets.
摘要翻译： 一种由混合的氢氧化镍氢产物生产镍铁产品的方法，所述方法包括以下步骤：提供混合的氢氧化镍氢氧化物产物; 将混合的镍氢氧化铁产物造粒以生产氢氧化镍氢氧化物颗粒; 煅烧镍氢氧化镍颗粒以制备混合的镍铁氧化物颗粒; 以及在高温下用一种或多种还原性气体还原镍铁氧化物颗粒以制备铁镍矿颗粒。
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公开(公告)号：US08366801B2
公开(公告)日：2013-02-05
申请号：US12672351
申请日：2008-08-07
IPC分类号： C22B3/08
CPC分类号： C22B23/043 , C22B23/0453 , C22B23/0461
摘要： An atmospheric leach process for the recovery of nickel and cobalt from lateritic ores includes providing limonitic and saprolitic ore fractions of a laterite ore; separately slurrying the limonitic and saprolitic ore fractions to produce a limonitic ore slurry and a saprolitic ore slurry; separating any limonitic type minerals from the saprolitic ore slurry to produce a saprolitic feed slurry; milling or wet grinding the saprolitic feed slurry; leaching the limonitic ore slurry with concentrated sulfuric acid in a primary leach step; introducing the saprolitic feed slurry to the leach process in a secondary leach step by combining the saprolitic feed slurry with the leached limonite slurry following substantial completion of the primary leach step, and releasing sulfuric acid to assist in leaching the saprolite feed slurry.
摘要翻译： 用于从红土矿石回收镍和钴的大气浸提方法包括提供红土矿石的褐铁矿和腐泥矿石部分; 分别制备褐铁矿和腐泥矿石级分，以生产褐铁矿矿浆和腐泥矿石浆料; 从褐煤矿矿浆中分离任何褐铁矿型矿物以产生腐植酸矿浆; 研磨或湿磨研磨腐浆饲料浆料; 在一级浸提步骤中用浓硫酸浸出褐铁矿矿浆; 在二次浸提步骤中，通过将主要浸出步骤基本上完成后将浸出的褐铁矿浆料与浸出的褐铁矿浆料混合，并且释放出硫酸以帮助浸提腐泥土进料浆料，将该腐泥进料浆料引入到浸出过程中。
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公开(公告)号：US20110100163A1
公开(公告)日：2011-05-05
申请号：US12672351
申请日：2008-08-07
CPC分类号： C22B23/043 , C22B23/0453 , C22B23/0461
摘要： An atmospheric leach process in the recovery of nickel and cobalt from lateritic ores, said process including the steps of: a) providing limonitic and saprolitic ore fractions of a laterite ore; b) separately slurrying the limonitic and saprolitic ore fractions to produce a limonitic ore slurry and a saprolitic ore slurry; c) separating any limonitic type minerals from the saprolitic ore slurry to produce a saprolitic feed slurry; d) milling or wet grinding the saprolitic feed slurry; e) leaching the limonitic ore slurry with concentrated sulfuric acid in a primary leach step; f) introducing the saprolitic feed slurry to the leach process in a secondary leach step by combining the saprolitic feed slurry with the leached limonite slurry following substantial completion of the primary leach step, releasing sulfuric acid to assist in leaching the saprolite feed slurry, wherein the saprolitic feed slurry is substantially free of all limonitic type minerals before it is introduced to the leach process.
摘要翻译： 所述方法包括以下步骤：a）提供红土矿的褐铁矿和腐泥矿石级分; b）分别制备褐铁矿和腐泥矿石级分，以产生褐铁矿矿浆和腐泥矿石浆料; c）从褐煤矿矿浆中分离任何褐铁矿型矿物以产生腐泥质的原料浆料; d）研磨或湿法研磨腐泥质原料浆料; e）在浓浸硫酸中浸出柠檬酸矿石浆料; f）在二次浸提步骤中，通过在基本完成初级浸出步骤之后，将腐泥质的原料浆料与浸出的褐铁矿浆液混合，将该腐泥质的原料浆料引入到浸出过程中，释放出硫酸以帮助浸出腐泥土进料浆料，其中 在引入浸出过程之前，腐泥进料浆料基本上不含所有的褐铁矿型矿物质。
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公开(公告)号：US07585350B2
公开(公告)日：2009-09-08
申请号：US11839876
申请日：2007-08-16
申请人： Alexey Duarte , Houyuan Liu , Ivan Petkov Ratchev
发明人： Alexey Duarte , Houyuan Liu , Ivan Petkov Ratchev
CPC分类号： C21B15/00 , C22B1/244 , C22B3/42 , C22B5/12 , C22B23/023 , C22B23/0453 , Y02P10/234
摘要： A process for producing a ferronickel product from a mixed nickel iron hydroxide product, said process including the steps of: providing a mixed nickel iron hydroxide product; pelletising the mixed nickel iron hydroxide product to produce nickel iron hydroxide pellets; calcining the nickel iron hydroxide pellets to produce mixed nickel iron oxide pellets; and reducing the nickel iron oxide pellets with one or more reducing gases at high temperatures to produce ferronickel pellets.
摘要翻译： 一种由混合的氢氧化镍氢产物生产镍铁产品的方法，所述方法包括以下步骤：提供混合的氢氧化镍氢氧化物产物; 将混合的镍氢氧化铁产物造粒以生产氢氧化镍氢氧化物颗粒; 煅烧镍氢氧化镍颗粒以制备混合的镍铁氧化物颗粒; 以及在高温下用一种或多种还原性气体还原镍铁氧化物颗粒以制备铁镍矿颗粒。
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公开(公告)号：US07871584B2
公开(公告)日：2011-01-18
申请号：US11745542
申请日：2007-05-08
申请人： Houyuan Liu , Alexey Duarte , Wolf Meihack
发明人： Houyuan Liu , Alexey Duarte , Wolf Meihack
IPC分类号： C22B3/00
CPC分类号： C22B23/0461 , C22B23/0415 , C22B23/043
摘要： A process for the recovery of nickel and cobalt from nickel and cobalt containing ores, including the steps of first leaching a laterite ore and/or a partially oxidized sulfide ore with an acid solution to produce a pregnant leach solution containing at least dissolved nickel, cobalt and ferric ions, and subsequently leaching a sulfide ore or concentrate with the pregnant leach solution to produce a product liquor. Alternatively, the laterite ore and/or partially oxidized sulfide ore can be leached in a combined leach with the sulfide ore or concentrate. The ferric ion content in the pregnant leach solution or in the combined leach is sufficient to maintain the oxidation and reduction potential in the sulfide leach high enough to assist in leaching nickel from the sulfide ore or concentrate.
摘要翻译： 一种用于从含镍和钴的矿石中回收镍和钴的方法，包括首先用酸溶液浸提红土矿石和/或部分氧化的硫化矿石以产生至少含有溶解的镍，含钴的浸出溶液 和铁离子，然后将硫化矿石或浓缩液与怀孕浸出溶液一起浸出以产生产物液体。 或者，红土矿石和/或部分氧化的硫化矿石可以与硫化物矿石或浓缩物一起浸出。 怀孕浸出溶液中或混合浸出中的铁离子含量足以使硫化物浸出物中的氧化和还原电位保持足够高，以帮助从硫化矿石或浓缩物中浸出镍。
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9.发明申请公开(公告)号：US20080050294A1
公开(公告)日：2008-02-28
申请号：US11745542
申请日：2007-05-08
申请人： Houyuan Liu , Alexey Duarte , Wolf Meihack
发明人： Houyuan Liu , Alexey Duarte , Wolf Meihack
CPC分类号： C22B23/0461 , C22B23/0415 , C22B23/043
摘要： A process for the recovery of nickel and cobalt from nickel and cobalt containing ores, including the steps of first leaching a laterite ore and/or a partially oxidised sulfide ore with an acid solution to produce a pregnant leach solution containing at least dissolved nickel, cobalt and ferric ions, and subsequently leaching a sulfide ore or concentrate with the pregnant leach solution to produce a product liquor. Alternatively, the laterite ore and/or partially oxidised sulfide ore can be leached in a combined leach with the sulfide ore or concentrate. The ferric ion content in the pregnant leach solution or in the combined leach is sufficient to maintain the oxidation and reduction potential in the sulfide leach high enough to assist in leaching nickel from the sulfide ore or concentrate.
摘要翻译： 一种用于从含镍和钴的矿石中回收镍和钴的方法，包括首先用酸溶液浸提红土矿石和/或部分氧化的硫化矿石以产生至少含有溶解的镍的钴的浸出溶液 和铁离子，然后将硫化矿石或浓缩液与怀孕浸出溶液一起浸出以产生产物液体。 或者，红土矿石和/或部分氧化的硫化矿石可以与硫化矿石或精矿混合浸出浸出。 怀孕浸出溶液中或混合浸出中的铁离子含量足以使硫化物浸出物中的氧化和还原电位保持足够高，以帮助从硫化矿石或浓缩物中浸出镍。
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10.发明授权Production of ferro-nickel or nickel matte by a combined hydrometallurgical and pyrometallurgical process 失效通过组合的湿法冶金和火法冶金工艺生产铁镍或镍锍公开(公告)号：US07597738B2
公开(公告)日：2009-10-06
申请号：US11687256
申请日：2007-03-16
申请人： Houyuan Liu , Alexey Duarte , Wolf Meihack , Ivan P. Ratchev
发明人： Houyuan Liu , Alexey Duarte , Wolf Meihack , Ivan P. Ratchev
CPC分类号： C22B23/021 , C22B3/42 , C22B3/44 , C22B5/10 , C22B23/043 , C22B23/0453 , C22B23/0461 , C22B23/0476 , C22B23/06 , Y02P10/216 , Y02P10/234
摘要： A process for the production of ferro-nickel or nickel matte from a product liquor solution containing at least nickel, cobalt, iron and acid soluble impurities, said process including the steps of: (a) contacting the product liquor solution (7) containing the nickel, cobalt, iron and acid soluble impurities with an ion exchange resin (8), wherein the resin selectively absorbs nickel and iron from the solution leaving the cobalt and the acid soluble impurities in the raffinate (9); (b) stripping the nickel and iron from the resin with a sulfuric acid solution to produce an eluate (11) containing nickel and iron; (c) neutralising the eluate to precipitate a mixed nickel iron hydroxide product (13); and (d) reducing and smelting the mixed nickel iron hydroxide product to produce ferro-nickel (29) or nickel matte (24).
摘要翻译： 从含有至少镍，钴，铁和酸可溶性杂质的产品液体溶液中生产铁镍或镍锍的方法，所述方法包括以下步骤：（a）使含有 镍，钴，铁和酸可溶性杂质与离子交换树脂（8）反应，其中树脂选择性地从溶液中吸收镍和铁，留下残留钴中的酸和可溶性杂质（9）; （b）用硫酸溶液从树脂中剥离镍和铁以制备含有镍和铁的洗脱液（11）; （c）中和洗脱液以沉淀混合的氢氧化镍氢氧化物产物（13）; 和（d）还原和熔炼混合的氢氧化镍氢氧化物产物以产生铁镍（29）或镍锍（24）。
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