公开(公告)号：US20040011851A1

公开(公告)日：2004-01-22

申请号：US10445787

申请日：2003-05-27

发明人： Keith A. Howell ,  James M. Morris ,  David M. McDonald ,  Eric Wayne Becker ,  Joseph Wayne Brickell

IPC分类号： B23K031/02

CPC分类号： B23K3/06 ,  B23K3/0646 ,  B23K3/08 ,  C22B7/003 ,  C22B7/004 ,  C22B7/04 ,  C22B13/025 ,  C22B13/045 ,  C22B25/06 ,  Y02P10/214 ,  Y02P10/228

摘要： When dross is removed from a molten-solder reservoir, a substantial amount of molten solder is often removed with the dross. This molten solder can be separated from the dross and returned to reservoir via a conduit for reuse. Additionally, a skimmer for removing the dross from the reservoir includes a skimming plate pivotally attached to a displaceable structure; a stop is provided to restrict the degree to which the skimming plate can pivot so that the skimming plate will not pivot more than 90null from vertical to enable the skimming plate to dig into the dross and collect dross when the displaceable structure is displaced toward on outlet of the reservoir. Further still, the displaceable structure of the skimmer can be controlled via a computer control system storing software code instructions for a motor to extend and retract the displaceable structure such that the skimming plate extends to a position further from the outlet port of the reservoir with each displacement cycle.

摘要翻译： 当从熔融焊料储存器移除浮渣时，通常用渣滓去除大量的熔融焊料。 该熔融焊料可以与浮渣分离，并通过管道返回到储存器中以便重新使用。 此外，用于从储存器去除渣滓的撇渣器包括枢转地附接到可移位结构的撇渣板; 设置止挡件以限制撇板能够枢转的程度，使得撇板不会从垂直方向枢转超过90°，以使得撇渣板能够在浮动位置上移动，并且当可移动结构向上移动时收集浮渣 水库出口。 此外，分离器的可移动结构可以通过存储用于电动机的软件代码指令的计算机控制系统进行控制，所述软件代码指令用于延伸和缩回可移动结构，使得撇板延伸到更远离储存器的出口的位置，每个 位移周期。

公开(公告)号：US20030200838A1

公开(公告)日：2003-10-30

申请号：US10132143

申请日：2002-04-26

发明人： Kuo-Chin Chen ,  Ching-Hwa Chang ,  Yu-Feng Lin ,  Tai-Sheng Yuan ,  Hung-Ming Wang ,  Jenn-Fang Wu ,  Huei-Yin Cheng

IPC分类号： C25C001/14

CPC分类号： C23F1/46 ,  C22B3/44 ,  C22B7/006 ,  C22B13/045 ,  C22B23/04 ,  C23G1/36 ,  C25C1/14 ,  C25C1/18 ,  Y02P10/234

摘要： The present invention relates to a method for treating spent tin or tin/lead stripping solution used in the electronic industry, particularly in the manufacture of printed circuit boards or a lead frames. Said method comprises (i) electrolytically reducing copper ions in the solution to copper at a low temperature; (ii) electrolytically oxidizing Sn2null and Pb2null in the solution at a high temperature to form solid tin and lead oxides and hydroxides; (iii) separating solid tin and lead oxides and hydroxides from the solution; (iv) dissolving tin and lead oxides and hydroxides obtained in step (iii) in a strong alkali or acidic solution; and (v) electrolytically reducing the alkali or acidic solution obtained in step (iv) at a high temperature to recover metallic tin and lead. Also, the filtrate obtained in step (iii) above is useful for preparing fresh tin or tin/lead stripping solution.

摘要翻译： 本发明涉及一种用于处理电子工业中使用的废锡或锡/铅剥离溶液的方法，特别是在印刷电路板或引线框的制造中。 所述方法包括（i）在低温下将溶液中的铜离子电解还原成铜; （ii）在高温下在溶液中电解氧化Sn 2+和Pb 2+，形成固体锡和氧化铅和氢氧化物; （iii）从溶液中分离固体锡和氧化铅和氢氧化物; （iv）将步骤（iii）中获得的锡和氧化铅和氢氧化物溶解在强碱或酸性溶液中; 和（v）在高温下电解还原步骤（iv）中得到的碱或酸性溶液以回收金属锡和铅。 此外，上述步骤（iii）中获得的滤液可用于制备新鲜的锡或锡/铅剥离溶液。

公开(公告)号：US6053963A

公开(公告)日：2000-04-25

申请号：US82930

申请日：1998-05-21

申请人： Paul R. Graves, Jr.

发明人： Paul R. Graves, Jr.

IPC分类号： C22B3/08 ,  C22B7/04 ,  C22B13/00

CPC分类号： C22B13/045 ,  C22B7/04 ,  Y02P10/212

摘要： The present invention provides a method for treating rotary slag containing iron and sodium compounds. The method involves treating the slag in a sulfuric acid solution to convert the iron and sodium within the slag to iron sulfate and sodium sulfate. The iron sulfate (along with substantially all of the heavy metal contaminants) forms a precipitate, while the sodium sulfate remains in solution. The precipitate can then be separated from the solution.

摘要翻译： 本发明提供一种处理含铁和钠化合物的回转炉渣的方法。 该方法包括在硫酸溶液中处理炉渣以将渣中的铁和钠转化为硫酸铁和硫酸钠。 硫酸铁（以及基本上所有的重金属污染物）形成沉淀物，而硫酸钠保留在溶液中。 然后可以将沉淀物与溶液分离。

公开(公告)号：US5744107A

公开(公告)日：1998-04-28

申请号：US359245

申请日：1994-12-16

申请人： William E. Fristad ,  Michael J. Virnig ,  Jonathan M. Cassel

发明人： William E. Fristad ,  Michael J. Virnig ,  Jonathan M. Cassel

IPC分类号： B03B5/00 ,  B09B3/00 ,  B09C1/02 ,  B09C1/10 ,  C01G13/00 ,  C01G21/00 ,  C22B1/00 ,  C22B3/04 ,  C22B3/06 ,  C22B3/16 ,  C22B3/46 ,  C22B7/00 ,  C22B13/00 ,  C22B15/00 ,  C22B25/06 ,  C22B43/00

CPC分类号： C22B43/00 ,  B03B5/00 ,  B09B3/0016 ,  B09C1/02 ,  B09C1/10 ,  C22B1/005 ,  C22B13/04 ,  C22B13/045 ,  C22B15/0067 ,  C22B25/04 ,  C22B25/06 ,  C22B3/06 ,  C22B3/1616 ,  C22B3/165 ,  C22B3/24 ,  C22B3/42 ,  C22B3/46 ,  C22B7/007 ,  Y02P10/228 ,  Y02P10/234 ,  Y02P10/236

摘要： Heavy metals are efficiently removed from contaminated soil by a process which comprises leaching or washing the soil with a mild leachant solution. The leachant solution is comprised of an aqueous solution of an acid and a salt. The anion of the acid forms a water-soluble salt with the heavy metals which contaminate the soil. The salt component is comprised of at least one alkali metal, alkaline earth metal, or an ammonium salt having one or more anions which also form a water-soluble salt with the heavy metals leached from the contaminated soil.

摘要翻译： 重金属通过包括用温和的浸提液浸出或洗涤土壤的方法有效地从污染的土壤中除去。 浸出液由酸和盐的水溶液组成。 酸的阴离子与污染土壤的重金属形成水溶性盐。 所述盐组分由至少一种碱金属，碱土金属或铵盐组​​成，所述碱金属，碱土金属或铵盐具有一个或多个阴离子，所述阴离子也与从污染土壤中浸出的重金属形成水溶性盐。

公开(公告)号：US5505925A

公开(公告)日：1996-04-09

申请号：US273256

申请日：1994-07-11

申请人： William E. Fristad

发明人： William E. Fristad

IPC分类号： B03B5/00 ,  B09B3/00 ,  B09C1/02 ,  B09C1/10 ,  C01G13/00 ,  C01G21/00 ,  C22B1/00 ,  C22B3/04 ,  C22B3/06 ,  C22B3/16 ,  C22B3/46 ,  C22B7/00 ,  C22B13/00 ,  C22B15/00 ,  C22B25/06 ,  C22B43/00

CPC分类号： C22B43/00 ,  B03B5/00 ,  B09B3/0016 ,  B09C1/02 ,  B09C1/10 ,  C22B1/005 ,  C22B13/04 ,  C22B13/045 ,  C22B15/0067 ,  C22B25/04 ,  C22B25/06 ,  C22B3/06 ,  C22B3/1616 ,  C22B3/165 ,  C22B3/24 ,  C22B3/42 ,  C22B3/46 ,  C22B7/007 ,  Y02P10/228 ,  Y02P10/234 ,  Y02P10/236

摘要： Heavy metals are efficiently removed from contaminated soil by a process which comprises leaching or washing the soil with a mild leachant solution comprised of an aqueous solution of an acid and a salt. Heavy metals are also efficiently removed from paint chips by washing with an aqueous acid. The heavy metals are recovered from the leachant be cementation.

摘要翻译： 重金属通过一种方法有效地从污染的土壤中除去，该方法包括用包含酸和盐的水溶液的温和浸出剂溶液浸出或洗涤土壤。 通过用酸水洗涤也可以有效地从油漆屑中除去重金属。 重金属从浸出剂中回收。

公开(公告)号：US5429661A

公开(公告)日：1995-07-04

申请号：US67225

申请日：1993-05-26

申请人： Nikolai V. Khodov ,  Oleg K. Kuznetsov

发明人： Nikolai V. Khodov ,  Oleg K. Kuznetsov

IPC分类号： C22B3/12 ,  C22B7/00 ,  C22B13/00 ,  H01M10/54

CPC分类号： C22B13/045 ,  H01M10/54 ,  Y02P10/212 ,  Y02W30/84

摘要： A method of recovering lead is proposed, wherein preliminarily crushed recycable raw material composed of spent lead-sulphuric acid storage batteries is subjected to treatment with an alkaline solution, as a result of which metallic lead, taken out of the process, and pulp, to be subjected to mechanical separation, are obtained. As a result of the separation, a lead-containing (as inclusions) polymer material and a suspension, which is a mixture of a sodium sulfate solution having lead oxide particles therein, are obtained. The suspension is separated, as a result of which lead oxides are taken out of the process, while the sodium sulfate solution is subjected to electrochemical treatment, as a result of which sulphuric acid and an alkaline solution are obtained, the alkaline solution being fed for treatment of the lead-containing (as inclusions) polymer material. As a result the amount of lead in the polymer material is reduced and an alkaline solution is obtained comprising sodium sulfate and sodium plumbate and is fed for treatment of the recyclable raw material.

摘要翻译： 提出了一种回收铅的方法，其中将由废铅酸蓄电池组成的预先破碎的可回收原料用碱性溶液处理，其中将从该方法中取出的金属铅和纸浆至 进行机械分离。 作为分离的结果，获得含铅（作为夹杂物）聚合物材料和悬浮液，其是其中具有氧化铅颗粒的硫酸钠溶液的混合物。 分离悬浮液，由此将铅氧化物从该方法中取出，同时对硫酸钠溶液进行电化学处理，结果获得硫酸和碱性溶液，将碱性溶液加入 处理含铅（作为夹杂物）聚合物材料。 结果，聚合物材料中的铅的量减少，得到包含硫酸钠和铅酸钠的碱性溶液，并且用于处理可再循环的原料。

公开(公告)号：US5348713A

公开(公告)日：1994-09-20

申请号：US929927

申请日：1992-08-14

申请人： Derek E. Kerfoot ,  Michael J. Collins ,  Michael E. Chalkley

发明人： Derek E. Kerfoot ,  Michael J. Collins ,  Michael E. Chalkley

IPC分类号： C22B7/00 ,  C22B15/00 ,  C22B19/30 ,  C22B3/08

CPC分类号： C22B13/045 ,  C22B11/042 ,  C22B15/0067 ,  C22B19/22 ,  C22B19/30 ,  C22B7/007 ,  Y02P10/214 ,  Y02P10/234 ,  Y02P10/236

摘要： A process is disclosed for recovering zinc, lead, copper and precious metals from zinc plant residue, said process comprising leaching the residue with return zinc spent electrolyte, neutralizing residual acid and reducing ferric iron in the solution by addition of zinc sulphide concentrate in the presence of a limited quantity of oxygen, flotation of the resulting slurry to separate unreacted zinc sulphide, treatment of flotation tailings with sulphur dioxide and elemental sulphur to further leach iron, zinc and impurity elements and precipitate copper, flotation of the resulting slurry to separate a copper sulphide concentrate, thickening, filtering and washing of the flotation tailings followed by addition of lime and sodium sulphide to activate lead sulphate and flotation of a lead concentrate from the residue. Iron and impurity elements are precipitated from the copper flotation tailings thickener overflow solution by addition of zinc hydroxide sludge, lime and oxygen to produce a high strength, iron free zinc sulphate solution.

摘要翻译： 公开了一种用于从锌植物残渣中回收锌，铅，铜和贵金属的方法，所述方法包括用返回的锌废电解液浸出残余物，通过在存在下加入硫化锌浓缩物中和残留酸和还原三价铁，还原三价铁 的有限量的氧气，所得浆料的浮选以分离未反应的硫化锌，用二氧化硫和元素硫处理浮选尾矿以进一步浸出铁，锌和杂质元素并沉淀铜，将所得浆液浮选分离铜 硫化物浓缩物，增稠，过滤和洗涤浮选尾矿，然后加入石灰和硫化钠以活化硫酸铅并从残余物中浮选铅精矿。 通过加入氢氧化锌污泥，石灰和氧气，从铜浮选尾矿增稠剂溢流溶液中沉淀出铁和杂质元素，产生高强度的无铁硫酸锌溶液。

公开(公告)号：US4927510A

公开(公告)日：1990-05-22

申请号：US258596

申请日：1988-10-17

申请人： Marco Olper ,  Pierluigi Fracchia

发明人： Marco Olper ,  Pierluigi Fracchia

IPC分类号： C25C1/18 ,  H01M10/54

CPC分类号： H01M10/54 ,  C22B13/045 ,  Y02P10/212 ,  Y02W30/84

摘要： A process for recovering in pure metal form substantially all lead from battery sludge is disclosed. The battery sludge is desulfurized, leached with acid, and separated by filtration. Lead is recovered from the filtrate by electrowinning. The residue from the leaching and filtration is treated with concentrated sulfuric acid to cause the simultaneous occurring of the following reactions:C.sub.n (H.sub.2 O).sub.m +H.sub.2 SO.sub.4 .fwdarw.nC+H.sub.2 SO.sub.4 .multidot.mH.sub.2 O (1)C+2PbO.sub.2 +2H.sub.2 SO.sub.4 .fwdarw.2PbSO.sub.4 +CO.sub.2 +2H.sub.2 O (2)up to the quantitative reduction of substantially all of the lead dioxide PbO.sub.2 and elimination of substantially all the organic substances C.sub.n (H.sub.2 O).sub.m contained in the insoluble residue. Lead sulfate from the above reaction is recycled to the desulfurization step.

公开(公告)号：US4460442A

公开(公告)日：1984-07-17

申请号：US408540

申请日：1982-08-16

申请人： Umberto Ducati

发明人： Umberto Ducati

IPC分类号： C22B13/00 ,  C01G21/10 ,  C22B7/00 ,  C25C1/18 ,  H01M4/56 ,  H01M10/54

CPC分类号： H01M10/54 ,  C22B13/045 ,  Y02P10/212 ,  Y02W30/84

摘要： In the method the ground scraps are screened to separate the pole active material, i.e. Pb and PbO.sub.2, as fines. This active material is then reacted in the presence of a strong alkaline solution to yield a minium precipitate.Minium may be subsequently treated with an appropriate acid, such as fluoboric acid, freed of antimony by precipitating the latter with metal lead, and then subjected to electrolysis to recover lead.

摘要翻译： 在该方法中，筛选碎屑以将极活性物质即Pb和PbO 2分离为细粒。 然后将该活性物质在强碱性溶液的存在下反应，得到微细沉淀物。 随后可以用合适的酸（如氟硼酸）处理矾土，通过金属铅使后者沉淀而除去锑，然后进行电解以回收铅。

公开(公告)号：US4229271A

公开(公告)日：1980-10-21

申请号：US42158

申请日：1979-05-24

申请人： Raymond D. Prengaman ,  Herschel B. McDonald

发明人： Raymond D. Prengaman ,  Herschel B. McDonald

IPC分类号： C25C1/18 ,  H01M10/54

CPC分类号： C25C1/18 ,  C22B13/045 ,  H01M10/54 ,  Y02P10/212 ,  Y02W30/84

摘要： A process for recovery of substantially all lead values in battery sludge as metallic lead is disclosed. By means of the process, lead is substantially completely and efficiently recovered as metallic lead in an environmentally acceptable manner. The process comprises (a) subjecting the sludge to low temperature reducing conditions; (b) converting lead sulfates to insoluble nonsulfur containing compounds while solubilizing all sulfur materials and thereafter separating the solid residue by solid-liquid separation techniques; (c) dissolving the solid products resulting from steps (a) and (b) in an acid selected from the group consisting of fluoboric and fluosilicic acid; (d) collecting the supernatant from step (c) by means of solid-liquid separation techniques; and (e) electrowinning the lead from the collected supernatant. The lead peroxide reduction of step (a) may be effected by low temperature reducing roasts or by contacting the lead peroxide with sulfur dioxide gas or sulfites.

摘要翻译： 公开了一种用于回收作为金属铅的电池污泥中基本上所有铅值的方法。 通过该方法，铅以环境可接受的方式基本上完全有效地作为金属铅回收。 该方法包括（a）使污泥经受低温降低条件; （b）将硫酸铅转化成不溶性含硫化合物，同时溶解所有硫物质，然后用​​固液分离技术分离固体残渣; （c）将由步骤（a）和（b）得到的固体产物溶解在选自氟硼酸和氟硅酸的酸中; （d）通过固液分离技术从步骤（c）中收集上清液; 和（e）从收集的上清液中电解提取铅。 步骤（a）的过氧化铅还原可以通过低温还原焙烧或使过氧化铅与二氧化硫气体或亚硫酸盐接触来实现。