公开(公告)号：US20070034056A1

公开(公告)日：2007-02-15

申请号：US10564358

申请日：2004-07-13

申请人： Geoffrey Miller ,  Houyuan Liu

发明人： Geoffrey Miller ,  Houyuan Liu

IPC分类号： C22B23/00

CPC分类号： C22B23/0453 ,  C22B23/043

摘要： A process for the recovery of nickel and cobalt from laterite ores, the process including the steps of: a) beneficiating the ore to separate it into a beneficiated upgraded ore fraction and a coarse, siliceous low grade rejects fraction which is substantially free from fines and clay materials; b) separately processing the upgraded ore fraction for the recovery of nickel and cobalt; and c) subjecting the low grade rejects fraction to a heap leach process with an acid supplemented solution to create a heap leachate for further nickel and cobalt recovery processing.

摘要翻译： 一种从红土矿石中回收镍和钴的方法，该方法包括以下步骤：a）优化矿石以将其分离成精选的升级矿石部分和基本上不含细粉的粗硅质低等级废品部分， 粘土材料; b）分别处理升级后的矿石部分以回收镍和钴; 和c）用酸补充的溶液对低等级废弃物部分进行堆浸工艺，以产生堆浸渗液用于进一步的镍和钴回收处理。

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。

公开(公告)号：US07758669B2

公开(公告)日：2010-07-20

申请号：US10564358

申请日：2004-07-13

申请人： Geoffrey William Miller ,  Houyuan Liu

发明人： Geoffrey William Miller ,  Houyuan Liu

IPC分类号： C22B23/00 ,  C22B3/04

CPC分类号： C22B23/0453 ,  C22B23/043

摘要： A process for the recovery of nickel and cobalt from laterite ores, the process including the steps of: a) beneficiating the ore to separate it into a beneficiated upgraded ore fraction and a coarse, siliceous low grade rejects fraction which is substantially free from fines and clay materials; b) separately processing the upgraded ore fraction for the recovery of nickel and cobalt; and c) subjecting the low grade rejects fraction to a heap leach process with an acid supplemented solution to create a heap leachate for further nickel and cobalt recovery processing.

摘要翻译： 一种从红土矿石中回收镍和钴的方法，该方法包括以下步骤：a）优化矿石以将其分离成精选的升级矿石部分和基本上不含细粉的粗硅质低等级废品部分， 粘土材料; b）分别处理升级后的矿石部分以回收镍和钴; 和c）用酸补充的溶液对低等级废弃物部分进行堆浸工艺，以产生堆浸渗液用于进一步的镍和钴回收处理。

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

IPC分类号： C22C1/00 ,  C22C38/00 ,  C22B5/12

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。

公开(公告)号：US07559972B2

公开(公告)日：2009-07-14

申请号：US11838307

申请日：2007-08-14

申请人： Houyuan Liu ,  Damien Gary Ignatius Krebs

发明人： Houyuan Liu ,  Damien Gary Ignatius Krebs

IPC分类号： C22B23/00

CPC分类号： C22B23/043 ,  C22B23/0461

摘要： A process is described for the recovery of nickel and cobalt from a nickeliferous laterite ore including the steps of: providing a nickeliferous laterite ore and separating that ore into its low magnesium limonite fraction and high magnesium saprolite fraction; treating the limonite fraction in acid solution in a primary high pressure leach step to produce a primary leach slurry; adding the saprolite fraction to the primary leach slurry to initiate precipitation of iron as goethite and/or hematite, while simultaneously releasing further acid from the iron precipitation, to effect a secondary atmospheric leach step, producing a secondary leach slurry; wherein all water used to prepare the ore slurries and/or acid solutions has an ionic composition that substantially avoids jarosite formation.

摘要翻译： 描述了用于从含镍红土矿石回收镍和钴的方法，包括以下步骤：a）提供含镍红土矿石，并将该矿石分离成其低镁褐铁矿部分和高镁腐泥土部分; b）在初级高压浸出步骤中在酸性溶液中处理褐铁矿部分以产生初级浸提浆料; c）将腐泥土部分加入到初级浸出浆料中以引发铁作为针铁矿和/或赤铁矿沉淀，同时从铁沉淀物中释放进一步的酸，进行次级大气浸出步骤，产生次级浸提浆料; 其中用于制备矿浆和/或酸溶液的所有水具有基本避免黄钾矾形成的离子组成。

公开(公告)号：US07601314B2

公开(公告)日：2009-10-13

申请号：US10553032

申请日：2004-04-08

申请人： Peter Allan Anderson ,  Mark Fisher ,  John Ernest Fittock ,  Victoria Margaret Hultgren ,  Erin Maree Jones ,  Robert Bruce Messenger ,  Adam Sean Moroney

发明人： Peter Allan Anderson ,  Mark Fisher ,  John Ernest Fittock ,  Victoria Margaret Hultgren ,  Erin Maree Jones ,  Robert Bruce Messenger ,  Adam Sean Moroney

IPC分类号： C01G1/00 ,  B01D11/00

CPC分类号： C22B23/0446 ,  C22B3/12 ,  C22B3/14 ,  Y02P10/234

摘要： A process for the recovery of nickel and/or cobalt from an impure nickel, cobalt or mixed nickel/cobalt material including the steps of: a) providing a nickel, cobalt or mixed nickel/cobalt material; and b) contacting the nickel, cobalt or mixed nickel/cobalt material with a feed ammoniacal ammonium carbonate solution and a reductant in a leach step.

摘要翻译： 一种从不纯的镍，钴或混合的镍/钴材料回收镍和/或钴的方法，包括以下步骤：a）提供镍，钴或混合的镍/钴材料; 和b）使镍，钴或混合的镍/钴材料与浸取步骤中的原料氨碳酸铵溶液和还原剂接触。

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

IPC分类号： C22B23/00 ,  C22B3/42

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）。