利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

328 条记录 (耗时 0.012 秒)

    Recovery of zinc from zinc sulphides by direct pressure leaching
    102.
    发明授权
    Recovery of zinc from zinc sulphides by direct pressure leaching 失效
    通过直接浸出法从ZINC硫化锌中回收ZINC

    公开(公告)号：US3867268A

    公开(公告)日：1975-02-18

    申请号：US38783373

    申请日：1973-08-21

    申请人： GORDON SHERRITT MINES LIMITED

    发明人： KAWULKA PAUL ,  HAFFENDEN WALTER J ,  MACKIW VLADIMIR N

    IPC分类号： C22B19/00 ,  B01F17/50 ,  C01B17/06 ,  C22B20060101 ,  C22B1/00 ,  C22B3/00 ,  C22B3/04 ,  C22B19/02 ,  C22B19/20 ,  C22D1/22 ,  C22B19/22

    CPC分类号： C22B19/22 ,  Y02P10/234

    摘要： Rapid and substantially complete extraction of zinc from zinc and iron containing sulphides is obtained by leaching the sulphides under oxidizing conditions at a temperature above the melting point of sulphur with an aqueous sulphuric acid solution containing at least the stoichiometric amount of acid required to combine with the zinc content of the sulphides as zinc sulphate and, also, containing an additive which is effective to prevent or at least substantially inhibit the molten sulphur from occluding unleached zinc sulphide particles thereby enabling the leaching reaction to continue until substantially all zinc values are extracted. Additives which are suitable for the process include lignins, lignosulphonates, tannin compounds, particularly quebracho, and other tree bark extracts, and alkylaryl sulphonates.

    摘要翻译： 通过在高于硫熔点的温度的氧化条件下用硫酸水溶液浸出硫化物，可以从含锌和铁的硫化物中快速和基本上完全提取锌，该硫酸水溶液至少含有化学计量量的酸， 硫化锌的锌含量为硫酸锌，并且还含有添加剂，其有效地防止或至少基本上抑制熔融硫阻塞未漂白的硫化锌颗粒，从而使浸出反应持续直至基本上所有的锌值被提取。 适用于该方法的添加剂包括木质素，木素磺酸盐，单宁化合物，特别是乔布鲁奇，以及其它树皮提取物和烷基芳基磺酸盐。

    Furnace and method of using the same for reclaiming metal
    103.
    发明授权
    Furnace and method of using the same for reclaiming metal 失效
    用于回收金属的炉子及其使用方法

    公开(公告)号：US3767381A

    公开(公告)日：1973-10-23

    申请号：US3767381D

    申请日：1971-07-28

    申请人： ALCO STANDARD CORP

    发明人： BIELEFELDT I

    IPC分类号： C22B5/16 ,  C22B7/00 ,  C22B19/04 ,  C21C5/38 ,  C22B19/00

    CPC分类号： C22B7/001 ,  C22B5/16 ,  C22B19/04 ,  Y02P10/214

    摘要： A metal is vaporized in a lower chamber of the furnace by a lower heating mechanism and then is condensed by a condenser in an upper chamber of the furnace. The condenser subsequently is heated by an upper heating mechanism to melt the metal and allow the latter to flow downwardly from the condenser and to return to the lower chamber.

    摘要翻译： 金属通过下部加热机构在炉的下部室中蒸发，然后通过冷凝器在炉的上部室中冷凝。 冷凝器随后被上部加热机构加热以熔化金属，并允许冷凝器从冷凝器向下流动并返回到下部室。

    Process for preventing agglomeration of cadmium in solution
    104.
    发明授权
    Process for preventing agglomeration of cadmium in solution 失效
    用于防止解决方案中的CADMIUM的集成过程

    公开(公告)号：US3761251A

    公开(公告)日：1973-09-25

    申请号：US3761251D

    申请日：1971-04-21

    申请人： BUNKER HILL CO ,  ORLANDINI B

    发明人： BUNKER HILL CO ,  ORLANDINI B

    IPC分类号： C22B19/00 ,  C22B19/06 ,  C22B17/04 ,  C23B5/12

    CPC分类号： C22B17/04 ,  C22B19/26 ,  Y02P10/234

    摘要： THE DISCLOSURE DESCRIBES A PROCESS FOR CONTROLLING THE AGGLOMERATION OF CADMIUM PRECIPITATE PARTICLES DURING THE PURIFICATION OF A ZINC SULFATE SOLUTION TO PREVENT THE BUILDUP OF LARGE BALLS OF CADMIUM PARTICLES WHICH MAY DAMAGE THE PROCESSING EQUIPMENT. THE CONTROL IS PROVIDED BY THE ADDITION OF SMALL AMOUNTS OF SOLUTION SOLUTION SULPHUROUS ACID GENERATING MATERIAL TO A LEACH SOLUTION. MATERIALS SUCH AS SULPHUROUS ACID, SULPHUR DIOXIDE, AND SODIUM SULPHITE ARE INCLUDED IN THE SULPHUROUS ACID GENERATING MATERIAL THAT ARE CAPABLE OF CONTROLLING THE AGGLOMERATION OF CADMIUM PARTICLES.

    Production of copper oxides and zinc oxide
    105.
    发明授权
    Production of copper oxides and zinc oxide 失效
    生产铜氧化物和氧化锌

    公开(公告)号：US3719451A

    公开(公告)日：1973-03-06

    申请号：US3719451D

    申请日：1971-01-21

    申请人： BURKE Z

    发明人： BURKE Z

    IPC分类号： C01G3/02 ,  C01G9/02 ,  C22B19/00

    CPC分类号： C01G3/02 ,  C01G9/02 ,  C01P2004/61 ,  C01P2006/10 ,  Y10S261/72

    摘要： A HYDROMETALLUGICAL SYSTEM FOR PRODUCING COPPER OR ZINC OXIDE. A CLOSED EVAPORATOR TANK PARTIALLY IS FILLED WITH MILD AMMONIA HYDROXIDE MAINTAINED BETWEEN 214* F. AND 218*F. BY RECIRCULATION THROUGH A HEAT EXCHANGER EXTERNAL TO THE EVAPORATOR. A PRESSURE OF BETWEEN 5 AND 10 P.S.I. IS MAINTAINED IN THE EVAPORATOR. WHEN A METALRICH AMMONIA CARBONATE SOLUTION FORMED BY LEACHING COPPER OR ZINC IN AN OXYGENATED DISSOLVER TANK IS SUPPLIED TO THE AMMONIA HYDROIDE, A RAPID REACTION TAKES PLACE, CAUSING PRECIPITATION OF THE DESIRED OXIDE AND EVAPORATION OF NH3, CO2 AND WATER. THE PRECIPITATED OXIDES MAY BE REMOVED EITHER CONTINUOUSLY OR IN BATCHES FROM THE EVAPORATOR. THE EVAPORATED GASES ARE CONDENSED AND REUSED IN THE LEACH SOLUTION. EFFICIENT OXYGENATION IN THE DISSOLVER IS ACHIEVED USING A NOVEL AERATOR COMPRISING A HOLLOW CARBON ROD.

    Process for the recovery of zinc from zinc- and iron-containing materials
    106.
    发明授权
    Process for the recovery of zinc from zinc- and iron-containing materials 失效
    从含锌和含铁材料中回收锌的工艺

    公开(公告)号：US3691038A

    公开(公告)日：1972-09-12

    申请号：US3691038D

    申请日：1970-09-23

    申请人： DET NORSKE ZENKKOMPANI AS

    发明人： ROEPENACK ADOLF VON ,  WUETRICH HANS ,  SCHMIDT WILHELM

    IPC分类号： C01G20060101 ,  C01G49/00 ,  C22B20060101 ,  C22B3/00 ,  C22B19/00 ,  C22D1/22

    CPC分类号： C22B19/22 ,  Y02P10/234

    摘要： A PROCESS FOR THE RECOVERY OF ZINC FROM MATERIALS, E.G. ORES OR CONCENTRATES AND OTHER SUBSTANCES CONTAINING ZINC AND IRON, GENERALLY IN THE FORM OF OXIDES, WHEREIN THE MATERIAL IS LEACHED WITH EXCESS HOT SULFURIC ACID. THE ACIDITY OF THE EXTRACTS IS REDUCED BY ADDING ZINC OXIDE OR LIKE ZINC-CONTAINING OXIDIC MATERIALS TO PRECIPITATE IRON. THE LEACHING IS CARRIED OUT AT 95*-100*C. WITH A LEACHING SOLUTION CONTAINING 180-220 G./LITER H2SO4. LEACHING IS CONTINUED UNTIL THE SULFURIC ACID CONTENT IS REDUCED TO 20-60 G./LITER H2SO4, WHEREUPON THE ZINC-CONTAINING OXIDIC MATERIALS ARE ADDED, PREFERABLY SUBSEQUENT TO THE ADDITION OF ALKALI-METAL AND/OR AMMONIOM IONS, AT A TEMPERATURE OF 95*-100*C. TO REDUCE THE SULFURIC ACID CONCENTRATION TO LESS THAN 10 G./LITER H2SO4.

    Process for recovering zinc from jarosite residue
    107.
    发明授权
    Process for recovering zinc from jarosite residue 失效
    从JAROSITE RESIDUE中回收ZINC的工艺

    公开(公告)号：US3684490A

    公开(公告)日：1972-08-15

    申请号：US3684490D

    申请日：1970-09-10

    申请人： NORSKE ZINKKOMPANI AS

    发明人： STEINTVEIT GEORG

    IPC分类号： C01G9/06 ,  C01G49/14 ,  C22B3/00 ,  C22B3/08 ,  C22B19/00

    CPC分类号： C22B3/08 ,  C22B19/22 ,  Y02P10/234

    摘要： A PROCESS FOR POST TREATMENT OF JAROSITE RESIDUE PRODUCED BY PRECIPITATION OF IRON IN ZINC SULPHATE SOLUTIONS IN THE PRESENCE OF K, NA AND/OR NH4-IONS. THE JAROSITE RESIDUE IS SIBJECTED TO LEACHING WITH SULPHURIC ACID, THE ACID ADDITION AND LEACHING BEING CARRIED OUT IN IMMEDIATE CONNECTION WITH THE PRECIPITATION OF JAROSITE RESIDUE OR SUBSEQUENT TO A PRECEDING THICKENING OF THE JAROSITE SLURRY. THE JAROSITE SLURRY CONTAINS 350-450 G./L. SOLID MATERIAL AND THE LEACHING IS CARRIED OUT AT 50-95*C.