公开(公告)号：US06632410B2

公开(公告)日：2003-10-14

申请号：US09891162

申请日：2001-06-25

申请人： Sang I. Kang ,  Phillip L. Mattison ,  Michael J. Virnig ,  R. Brantley Sudderth ,  George A. Wolfe

发明人： Sang I. Kang ,  Phillip L. Mattison ,  Michael J. Virnig ,  R. Brantley Sudderth ,  George A. Wolfe

IPC分类号： C22B1500

CPC分类号： C07C251/24 ,  C22B3/0017 ,  C22B15/0084 ,  Y02P10/234 ,  Y02P10/236

摘要： Copper is preferentially extracted from iron in an aqueous feedstock solution containing dissolved copper and iron values by contacting the feedstock solution with a water-immiscible organic solution comprised of a hydrocarbon solvent and a compound of the formula I wherein R5 is a C1-22 linear or branched alkyl group, a C2-22 linear or branched alkenyl group, a C6 aryl group, a C7-22 aralkyl group, a halogen, OH or —OR6 wherein R6 is a C1-22 linear or branched alkyl group, a C2-22 linear or branched alkenyl group, a C6 aryl group, a C7-22 aralkyl group; R1 is hydrogen, or a C1-22 linear or branched alkyl or alkenyl group, a C6 aryl group or a C7-22 aralkyl group; R2-R4 is hydrogen, halogen, a linear or branched C6-12 alkyl group, —OR6 wherein R6 is a C1-22 linear or branched alkyl group, a C2-22 linear or branched alkenyl group, a C6 aryl group, or a C7-22 aralkyl group to form an aqueous phase comprised of iron and an organic phase comprised of the hydrocarbon solvent and a copper-extractant complex wherein the copper-extractant complex is soluble in the hydrocarbon solvent. The R2-R5 groups are chosen so that the copper-extractant complex is soluble in the hydrocarbon solvent. After the extraction stage is completed and the organic and aqueous phases separate, the organic phase is substantially free of iron and/or an iron-extractant complex.

公开(公告)号：US06277341B1

公开(公告)日：2001-08-21

申请号：US09380637

申请日：1999-11-24

申请人： Anthony Pinches ,  Peter J. Myburgh ,  Charmaine van der Merwe

发明人： Anthony Pinches ,  Peter J. Myburgh ,  Charmaine van der Merwe

IPC分类号： C22B1500

CPC分类号： C22B3/08 ,  C22B15/0071 ,  Y02P10/234 ,  Y02P10/236

摘要： A process is provided for the leaching of copper from chalcopyrite using ferric sulfate in which acceptable rates of leaching are achieved by controlling the surface potential of the chalcopyrite to an empirically determined “window” within the broad range of 350 to 450 mV. The most effective process conditions involve the selection of the said surface potential; the leach temperature; the pH of the leach solution; and the fineness of the grind of the chalcopyrite. The invention may be applied to both tank leaching and heap leaching processes.

摘要翻译： 提供了一种使用硫酸铁从黄铜矿浸出铜的方法，其中通过在350至450mV的宽范围内将黄铜矿的表面电位控制为经验确定的“窗口”，从而达到可接受的浸出率。 最有效的工艺条件包括选择所述表面电位; 浸出温度; 浸出液的pH值; 以及黄铜矿研磨的细度。 本发明可以应用于槽浸和堆浸过程。

公开(公告)号：US06569391B1

公开(公告)日：2003-05-27

申请号：US09024413

申请日：1998-02-17

申请人： Jaime A. Arias

发明人： Jaime A. Arias

IPC分类号： C22B1500

CPC分类号： C22B15/0071 ,  Y02P10/236

摘要： The heap leaching of copper bearing ores is improved by using sodium nitrate as an oxidizing chemical reactive in a sulphuric acid leaching solution. In particular, the ore is crushed to

摘要翻译： 通过在硫酸浸出溶液中使用硝酸钠作为氧化剂反应性来提高含铜矿石的堆浸。 特别地，矿石被粉碎至<6mm并储存在小于12米高的堆中。 用基本上由硫酸和硝酸钠组成的稀释溶液灌溉堆以产生浸出产物。 浸出产物从堆中回收，铜通过电解从浸出产物中回收。 堆的pH优选保持在<= 1.7 pH。

公开(公告)号：US06455019B2

公开(公告)日：2002-09-24

申请号：US09866027

申请日：2001-05-25

申请人： David L. Jones

发明人： David L. Jones

IPC分类号： C22B1500

CPC分类号： C22B23/043 ,  C22B3/0005 ,  C22B3/06 ,  C22B3/08 ,  C22B15/0067 ,  C22B15/0069 ,  C22B15/0071 ,  C22B15/0084 ,  C22B15/0089 ,  C22B23/0415 ,  C22B23/0423 ,  C22B23/0476 ,  Y02P10/214 ,  Y02P10/234 ,  Y02P10/236

摘要： A process for the extraction of copper from a sulphide ore or concentrate comprises the steps of subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halide and sulphate ions to obtain a resulting pressure oxidation slurry. The slurry is subjected to a liquid/solid separation step to obtain a resulting pressure oxidation filtrate and a solid residue containing an insoluble basic metal sulphate salt. The basic metal sulphate salt is leached in a second leaching with an acidic sulphate solution to dissolve the basic metal salt to produce a leach liquor containing a metal sulphate, e.g. copper sulphate, in solution and a resulting solid residue. The leach liquor is separated from the solid residue and subjected to a solvent extraction process to produce metal concentrate solution and a metal depleted raffinate. At least a portion of the raffinate is recycled to the pressure oxidation after being subjected to evaporation.

摘要翻译： 从硫化物矿石或浓缩物中提取铜的方法包括以下步骤：在氧气和含有卤化物和硫酸根离子的酸性溶液的存在下对矿石或浓缩物进行压力氧化，以获得所得的压力氧化浆料。 对浆料进行液/固分离步骤，得到压力氧化滤液和含有不溶性碱金属硫酸盐的固体残余物。 碱性金属硫酸盐在用酸性硫酸盐溶液浸提第二次浸出以溶解碱金属盐以产生含有金属硫酸盐的浸出液， 硫酸铜，在溶液中，得到固体残余物。 将浸出液与固体残余物分离，并进行溶剂萃取工艺以产生金属浓缩液和金属贫化残液。 在进行蒸发之后，将至少一部分萃余液再循环至压力氧化。

公开(公告)号：US06416565B1

公开(公告)日：2002-07-09

申请号：US09555020

申请日：2000-10-05

申请人： Akira Yazawa ,  Yoichi Takeda ,  Nozomu Hasegawa ,  Yoshiaki Mori

发明人： Akira Yazawa ,  Yoichi Takeda ,  Nozomu Hasegawa ,  Yoshiaki Mori

IPC分类号： C22B1500

CPC分类号： C22B15/0054 ,  C22B15/0028 ,  C22B15/0047 ,  C22B15/006

摘要： A method of oxygen-smelting copper sulfide concentrate to obtain white metal, nearly white metal matte or blister copper by removing most of the Fe in the copper sulfide concentrate into the slag as well as removing part or most of the S therein as SO2 wherein oxygen-smelting is carried out to produce; slag in which a weight ratio of CaO to (SiO2+CaO) is 0.3 to 0.6 and a weight ratio of Fe to (FeOx+SiO2+CaO) is 0.2 to 0.5, and white metal, nearly white metal matte or blister copper, by adding SiO2 material and CaO material to the copper sulfide concentrate as flux.

摘要翻译： 通过将硫化铜精矿中的大部分Fe去除到炉渣中以及将其中的部分或大部分S除去为SO 2，得到白色金属，接近白色金属锍或起泡铜的方法，其中氧气 - 进行生产; CaO与（SiO2 + CaO）的重量比为0.3〜0.6，Fe与（FeOx + SiO2 + CaO）的重量比为0.2〜0.5的矿渣，白色金属，近白色金属无光泽或起泡铜，由 将SiO2材料和CaO材料作为助熔剂加入到硫化铜精矿中。

公开(公告)号：US06402806B1

公开(公告)日：2002-06-11

申请号：US09608659

申请日：2000-06-30

申请人： John Vincent Schmitt ,  Ling Chen ,  George Michael Bleyle ,  Yu Cong ,  Alfred Mak ,  Mei Chang

发明人： John Vincent Schmitt ,  Ling Chen ,  George Michael Bleyle ,  Yu Cong ,  Alfred Mak ,  Mei Chang

IPC分类号： C22B1500

CPC分类号： C23C16/45561 ,  B01D53/002 ,  B01D53/72 ,  C23C16/4412 ,  C30B25/14 ,  H01J37/32834

摘要： A hot trap converts unreacted organic metal-film precursor from the exhaust stream of a CVD process. The converted precursor forms a metal film on the surface of the hot trap, thereby protecting hot vacuum pump surfaces from metal build up. A cold trap downstream from the hot trap freezes effluents from the exhaust stream. The metal captured by the hot trap and the effluents captured by the cold trap may then be recycled, rather than being released as environmental emissions.

摘要翻译： 热阱从CVD工艺的排气流转换未反应的有机金属膜前体。 转化的前体在热阱的表面上形成金属膜，从而保护热真空泵表面免受金属积聚。 热阱下游的冷阱将废气排出的废水冻结。 由热阱捕获的金属和由冷阱捕获的流出物可以被再循环，而不是作为环境排放而被释放。

公开(公告)号：US06210647B1

公开(公告)日：2001-04-03

申请号：US08976276

申请日：1997-11-21

申请人： Michael J. Virnig ,  Gary A. Kordosky ,  George A. Wolfe ,  J. Murdoch MacKenzie

发明人： Michael J. Virnig ,  Gary A. Kordosky ,  George A. Wolfe ,  J. Murdoch MacKenzie

IPC分类号： C22B1500

CPC分类号： C01G3/003 ,  C01G9/003 ,  C01G53/003 ,  C22B3/0017 ,  C22B15/0078 ,  C22B23/0446 ,  Y02P10/234 ,  Y02P10/236

摘要： An improved process for the extraction of a metal from an aqueous ammoniacal solution comprising: (i) contacting the aqueous ammoniacal solution with an extraction reagent comprised of a water insoluble extractant for the metal, to provide an organic phase, now containing metal values, and an aqueous phase from which metal values have been extracted; (ii) contacting the organic phase with an aqueous stripping solution to provide an aqueous strip phase, now containing metal values, and an organic phase from which metal values have been stripped; and (iii) recovering the metal values from the aqueous stripping solution; the improvement wherein (a) the extraction reagent contains an ammonia antagonist having only hydrogen bond acceptor properties; (b) the stripping solution is an aqueous highly acidic solution; and (c) the organic phase is washed with a weakly acidic aqueous solution prior to stripping with the highly acidic aqueous stripping solution. The extractant is preferably an oxime extractant, either a ketoxime or an aldoxime. The preferred hydrocarbon solvent is kerosene and the preferred antagonist is 2,2,4-trimethylpentane-1,3-diol diisobutyrate.

摘要翻译： 一种用于从氨水溶液中提取金属的改进方法，包括：（i）使氨水溶液与由金属的水不溶性萃取剂组成的萃取剂接触，以提供现在含有金属值的有机相，以及 提取金属值的水相;（ii）使有机相与水性剥离溶液接触，以提供现在含有金属值的水性带状相和金属值被剥离的有机相; 和（iii）从水性剥离溶液中回收金属值;改进，其中（a）提取试剂含有仅具有氢键受体性质的氨拮抗剂; （b）剥离溶液是高浓度水溶液; 和（c）有机相用弱酸性水溶液洗涤，然后用高度酸性的水性剥离溶液汽提。 萃取剂优选为肟萃取剂，酮肟或醛肟。 优选的烃溶剂是煤油，优选的拮抗剂是2,2,4-三甲基戊烷-1,3-二醇二异丁酸酯。

公开(公告)号：US06652620B2

公开(公告)日：2003-11-25

申请号：US10179988

申请日：2002-06-26

申请人： Yoshiyuki Miyagawa ,  Katsuhiro Tanaka

发明人： Yoshiyuki Miyagawa ,  Katsuhiro Tanaka

IPC分类号： C22B1500

CPC分类号： C21B13/0046 ,  C21B13/0086 ,  C22B1/26

摘要： A method for cooling hot reduced iron briquettes at low cost without degrading the strength is provided. The method includes a primary cooling step of cooling the hot reduced iron briquettes by steam at a cooling rate of 4.0° C./s or less, a secondary cooling step of cooling the reduced iron briquettes by steam and sprayed water at a cooling rate of 4.0° C./s or less, and a final cooling step of cooling the reduced iron briquettes by sprayed water at a cooling rate of 3.5° C./s or more to a temperature in a final product temperature range. The steam generated by evaporation of sprayed water during the final cooling step is used in the primary and/or secondary cooling step.

公开(公告)号：US06569224B2

公开(公告)日：2003-05-27

申请号：US10175023

申请日：2002-06-19

申请人： Derek George Eagland Kerfoot ,  Eberhard Krause ,  Bruce John Love ,  Avinash Singhal

发明人： Derek George Eagland Kerfoot ,  Eberhard Krause ,  Bruce John Love ,  Avinash Singhal

IPC分类号： C22B1500

CPC分类号： C22B23/0461 ,  C22B3/06 ,  C22B23/0423 ,  C22B23/043 ,  Y02P10/234

摘要： A hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate. The process involves forming a slurry of the sulfidic flotation concentrate in an acid solution, and subjecting the slurried flotation concentrate to a chlorine leach at atmospheric pressure followed by an oxidative pressure leach. After liquid-solids separation and purification of the concentrate resulting in the removal of copper and cobalt, the nickel-containing solution is directly treated by electrowinning to recover nickel cathode therefrom.

公开(公告)号：US06274104B1

公开(公告)日：2001-08-14

申请号：US09325197

申请日：1999-06-03

申请人： Jussi Rastas ,  Pekka Saikkonen

发明人： Jussi Rastas ,  Pekka Saikkonen

IPC分类号： C22B1500

CPC分类号： C22B1/06 ,  C22B19/02 ,  C22B23/005 ,  Y02P10/216

摘要： The invention relates to a method for recovering non-ferrous metals, particularly nickel, cobalt, copper, zinc, manganese and magnesium, from materials containing said metals by converting said non-ferrous metals into sulphates by means of melt and melt coating sulphation, i.e. by a thermal treatment under oxidizing conditions within a temperature range of 400 to 800° C., during which a reaction mixture is formed containing at least one said non-ferrous metal, iron(III)sulphate and alkali metal sulphate, and appropriate reaction conditions are selected to substantially prevent iron(III)sulphate from thermally decomposing to hematite, and finally, said non-ferrous metals are recovered as metallic compounds. In the method of the invention, a process is formed around the melt and melt coating sulphation, which comprises nine steps. The invention is particularly characterized by the manner of pelletizing the material to be fed into step 2 with an alkali metal (Na, K) sulphate—sulphuric acid—water solution, during which the hematite (Fe2O3) contained in the feed material will at a suitable temperature react with sulphuric acid and form hydrous iron(III)sulphate which together with sodium sulphate also acts as the bonding agent required in the pelletizing.

摘要翻译： 本发明涉及通过熔融和熔融涂覆硫酸化将所述有色金属转化为硫酸盐，从含有所述金属的材料中回收有色金属，特别是镍，钴，铜，锌，锰和镁的方法，即 通过在400至800℃的温度范围内的氧化条件下的热处理，其中形成含有至少一种所述有色金属，硫酸铁（III）和碱金属硫酸盐的反应混合物，以及适当的反应条件 被选择为基本上防止硫酸铁（III）热分解成赤铁矿，最后所述有色金属作为金属化合物回收。 在本发明的方法中，在熔融和熔融涂覆硫酸化周围形成一个工艺，其包括九个步骤。 本发明的特征在于用碱金属（Na，K）硫酸盐 - 硫酸 - 水溶液将待进料到步骤2中的材料造粒的方式，在此期间，原料中所含的赤铁矿（Fe 2 O 3）将在 合适的温度与硫酸反应形成硫酸氢铁（III），与硫酸钠一起也用作造粒所需的粘合剂。