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1. 发明授权

US08366801B2 Atmospheric acid leach process for laterites 失效
标题翻译：红土浸出大气过程
公开(公告)号：US08366801B2
公开(公告)日：2013-02-05
申请号：US12672351
申请日：2008-08-07
申请人： Anthony Charles Chamberlain , Chad James Otto Czerny , Houyuan Liu , Harald Theowald Muller
发明人： Anthony Charles Chamberlain , Chad James Otto Czerny , Houyuan Liu , Harald Theowald Muller
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。

2. 发明申请

US20110100163A1 Atmospheric Acid Leach Process For Laterites 失效
标题翻译：大黄酸浸出过程为红土
公开(公告)号：US20110100163A1
公开(公告)日：2011-05-05
申请号：US12672351
申请日：2008-08-07
申请人： Anthony Charles Chamberlain , Chad James Otto Czerny , Houyuan Liu , Harald Theowald Muller
发明人： Anthony Charles Chamberlain , Chad James Otto Czerny , Houyuan Liu , Harald Theowald Muller
IPC分类号： C22B15/00 , C22B23/00
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。

3. 发明申请

US20110083533A1 Saprolite Neutralisation of Heap Leach Process 失效
标题翻译：堆肥浸出过程的皂土中和
公开(公告)号：US20110083533A1
公开(公告)日：2011-04-14
申请号：US12991848
申请日：2009-06-16
申请人： Houyuan Liu , Eric Girvan Roche
发明人： Houyuan Liu , Eric Girvan Roche
IPC分类号： C22B23/00
CPC分类号： C22B23/0461 , C22B23/0415 , C22B23/043
摘要： A heap leach process for the recovery of nickel and/or cobalt from a laterite ore, said process including the steps of: a) providing one or more heaps of a nickeliferous laterite ore; b) leaching the ore in a heap leach step by applying acid to one or more heaps to provide a pregnant leach solution; c) neutralising the pregnant leach solution with ground saprolite ore; and d) recovering the nickel and/or cobalt from the neutralised pregnant leach solution.
摘要翻译：一种用于从红土矿石中回收镍和/或钴的堆浸工艺，所述方法包括以下步骤：a）提供一个或多个镍铁红土矿石; b）通过将酸浸到一个或多个堆中以提供浸出溶液，将矿石浸入堆浸步骤; c）用磨碎的腐泥土矿石中和怀孕的浸出液; 和d）从中和的浸出溶液中回收镍和/或钴。

4. 发明申请

US20060153768A1 Production of titania 失效
公开(公告)号：US20060153768A1
公开(公告)日：2006-07-13
申请号：US10531804
申请日：2003-10-17
申请人： Eric Roche , Alan Stuart , Ernest Grazier , Houyuan Liu
发明人： Eric Roche , Alan Stuart , Ernest Grazier , Houyuan Liu
IPC分类号： C01G23/047
CPC分类号： C22B34/125 , C22B3/0005 , C22B34/1259 , Y02P10/234
摘要： A sulfate process for producing titania from a titaniferous material is disclosed. The process includes leaching the titaniferous material and producing a leach liquor, separating titanyl sulfate from leach liquor, hydrolysis of the extracted titanyl sulfate, and thereafter calcining the solid phase produced in the hydrolysis step. The process is characterised by controlling the hydrolysis step and forming a selected particle size distribution of hydrated titanium oxides from titanyl sulfate.

5. 发明授权

US5571308A Method for recovering nickel from high magnesium-containing Ni-Fe-Mg lateritic ore 失效
标题翻译：从高含镁Ni-Fe-Mg红土矿中回收镍的方法
公开(公告)号：US5571308A
公开(公告)日：1996-11-05
申请号：US502923
申请日：1995-07-17
申请人： Willem P. C. Duyvesteyn , Manuel R. Lastra , Houyuan Liu
发明人： Willem P. C. Duyvesteyn , Manuel R. Lastra , Houyuan Liu
IPC分类号： C22B23/00 , C22B3/42 , C22B26/22
CPC分类号： C22B26/22 , C22B23/0423 , C22B3/42 , Y02P10/234
摘要： A method is provided for recovering nickel from high magnesium-containing lateritic ores which also contain iron. The ores which are referred to as saprolitic ores are subjected to leaching with a mineral acid from the group consisting of HCl, H.sub.2 SO.sub.4 and HNO.sub.3, HCl being preferred.Following leaching with HCl, for example, the pregnant solution obtained is separated from undissolved solids and the nickel preferably recovered by contacting the solution with a resin selective to nickel absorption. The raffinate remaining which contains iron and magnesium chlorides may be subjected to pyro-hydrolysis to produce their respective oxides and free HCl for recycle into the leaching system. The nickel is extracted from the resin using a stripping solution of said acid, and the nickel thereafter extracted from the nickel-loaded stripping solution.
摘要翻译：提供了一种从含有铁的高含镁红土矿中回收镍的方法。被称为腐泥矿石的矿石用无机酸从HCl，H2SO4和HNO3组成的组中浸出，HCl是优选的。在用HCl浸出后，例如将所得到的怀孕溶液与未溶解的固体分离，优选通过使溶液与对镍吸收有选择性的树脂接触来回收镍。含有氯化铁和氯化镁的剩余残余物可以进行热解水解以产生它们各自的氧化物和游离HCl，以循环进入浸出系统。使用所述酸的汽提溶液从树脂中提取镍，然后从镍负载的汽提溶液中提取镍。

6. 发明申请

US20110232421A1 Nickel Recovery from a High Ferrous Content Laterite Ore 有权
标题翻译：从高铁含量红土矿石中回收镍
公开(公告)号：US20110232421A1
公开(公告)日：2011-09-29
申请号：US12599586
申请日：2008-05-12
申请人： Omar Yesid Caceres Hernandez , Harald Muller , Graham Reynolds , Houyuan Liu
发明人： Omar Yesid Caceres Hernandez , Harald Muller , Graham Reynolds , Houyuan Liu
IPC分类号： C22B23/00
CPC分类号： C22B23/043 , C22B3/42 , C22B3/44 , C22B15/0089 , C22B23/0453 , C22B23/0461 , Y02P10/234 , Y02P10/236
摘要： A process for the recovery of nickel and/or cobalt from laterite or partially oxidised lateritic ores having a substantial proportion of the iron present in the ferrous state, said process including the steps of: a) providing a laterite or partially oxidised laterite ore wherein a substantial proportion of the iron present in the ore is in the ferrous state; b) acid leaching the ore to provide a product leach solution containing at least ferrous iron, nickel and cobalt together with acid soluble impurities; and c) recovering the nickel and cobalt from the product leach solution with a selective ion exchange resin in an ion exchange process leaving the ferrous iron and other acid soluble impurities in the raffinate.
摘要翻译：一种从有色金属中存在的大部分铁的红土或部分氧化的红土矿回收镍和/或钴的方法，所述方法包括以下步骤：a）提供红土或部分氧化的红土矿石，其中a 矿石中存在的铁的相当比例处于亚铁状态; b）酸浸出矿石以提供含有至少二价铁，镍和钴以及酸溶性杂质的产品浸出溶液; 和c）在离子交换过程中用选择性离子交换树脂从产物浸出溶液中回收镍和钴，留下亚硫酸铁和其余酸溶性杂质在残液中。

7. 发明授权

US07758669B2 Process for recovery of nickel and cobalt by heap leaching of low grade nickel or cobalt containing material 有权
标题翻译：通过低等级含镍或含钴材料的堆浸来回收镍和钴的工艺
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。

8. 发明授权

US07585350B2 Production of ferronickel 失效
标题翻译：铁镍铁的生产
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。

9. 发明授权

US07559972B2 Process for enhanced acid leaching of laterite ores 失效
标题翻译：红土矿石酸浸提高工艺
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。

10. 发明申请

US20080016986A1 Production of Ferro-Nickel or Nickel Matte by a combined Hydrometallurgical and Pyrometallurgical Process 失效
标题翻译：通过联合湿法冶金和火法冶金工艺生产铁镍或镍粉
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
IPC分类号： C22B3/42 , C22B23/00 , C22B9/02 , C22B3/00
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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