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    Process for the leaching of gold and silver with cyanidic leaching solution and controlled addition of hydrogen peroxide
    1.
    发明授权
    Process for the leaching of gold and silver with cyanidic leaching solution and controlled addition of hydrogen peroxide 失效
    用氰化浸出溶液浸出金和银的过程，控制加入过氧化氢

    公开(公告)号：US5275791A

    公开(公告)日：1994-01-04

    申请号：US899060

    申请日：1992-06-16

    申请人： Helmut Knorre ,  Andrew Griffiths ,  Juergen Loroesch ,  Joachim Fischer

    发明人： Helmut Knorre ,  Andrew Griffiths ,  Juergen Loroesch ,  Joachim Fischer

    IPC分类号： C22B11/08 ,  C01G5/00 ,  C01G7/00

    CPC分类号： C22B11/08

    摘要： A process is described for leaching gold and/or silver from ores or ore concentrates using an aqueous alkaline cyanide solution with addition of hydrogen peroxide. The addition of the aqueous H.sub.2 O.sub.2 solution is regulated and controlled through the concentration of the oxygen dissolved in the leaching solution, the leaching solution containing from 2 to 20 mg O.sub.2 and preferably from 7 to 13 mg O.sub.2 per liter. 0.5 to 5% by weight H.sub.2 O.sub.2 solutions are preferably added. The process is applicable both to leaching by agitation and to heap leaching, the addition of H.sub.2 O.sub.2 being regulated and controlled through measurement of the O.sub.2 concentration in the leaching solution and can also involve measurement in a measuring stream. Despite low consumptions of H.sub.2 O.sub.2 and NaCN, the gold yield is even increased in some cases and the leaching time shortened.

    摘要翻译： 描述了一种使用加入过氧化氢的碱性氰化物水溶液从矿石或精矿中浸出金和/或银的方法。 通过溶解在浸出溶液中的氧浓度调节和控制H 2 O 2水溶液的添加，浸出溶液含有2至20mg O 2，优选7至13mg O 2 /升。 优选加入0.5-5重量％的H 2 O 2溶液。 该方法适用于通过搅拌和堆浸浸出，通过测量浸出溶液中的O 2浓度来调节和控制H 2 O 2的添加，并且还可以涉及测量流中的测量。 尽管H2O2和NaCN的消耗量很低，但在某些情况下，金的产量甚至增加，浸出时间缩短。

    Cost effective process for detoxification of cyanide-containing effluents
    2.
    发明授权
    Cost effective process for detoxification of cyanide-containing effluents 失效
    对含氰化物污水进行解毒的成本有效的方法

    公开(公告)号：US5178775A

    公开(公告)日：1993-01-12

    申请号：US669581

    申请日：1990-12-17

    申请人： M. Q. Ahsan ,  Stephen Gos ,  Helmut Knorre ,  Roy Norcross ,  Friedrich W. Merz

    发明人： M. Q. Ahsan ,  Stephen Gos ,  Helmut Knorre ,  Roy Norcross ,  Friedrich W. Merz

    IPC分类号： C02F1/72 ,  C02F9/00

    CPC分类号： C02F1/725 ,  C02F1/722 ,  C02F2101/18 ,  Y10S210/904

    摘要： This invention pertains to a method of treating cyanide contained in wastewater with particularly high levels of solids in the stream. The process involves either simultaneous or step-wise dosage of hydrogen peroxide in the form of an aqueous solution of a concentration between 35% to 90% by weight, preferably at least 50% by weight, and SO.sub.2 either in the form of gaseous SO.sub.2 or solution of sodium and/or potassium sulfite or metabisulfite resulting in the conversion of cyanide ions to non-toxic cyanate ions.

    摘要翻译： 本发明涉及在流中处理含有特别高固体含量的废水中处理氰化物的方法。 该方法包括以浓度为35重量％至90重量％，优选至少50重量％的浓度的水溶液的形式的同时或逐步剂量的过氧化氢，SO 2为气态SO 2或 亚硫酸钠和/或亚硫酸钾或焦亚硫酸钾的溶液，导致氰离子转化为无毒的氰酸根离子。

    Process for leaching precious metals with hydrogen-peroxide and a cyanide leaching solution
    5.
    发明授权
    Process for leaching precious metals with hydrogen-peroxide and a cyanide leaching solution 失效
    用过氧化氢和氰化物浸出溶液浸取贵金属的方法

    公开(公告)号：US5250272A

    公开(公告)日：1993-10-05

    申请号：US899588

    申请日：1992-06-18

    申请人： Helmut Knorre ,  Juergen Loroesch ,  Steven Gos ,  Mathias Stoll ,  Annette Ziegler

    发明人： Helmut Knorre ,  Juergen Loroesch ,  Steven Gos ,  Mathias Stoll ,  Annette Ziegler

    IPC分类号： C22B11/08 ,  C01G5/00 ,  C01G7/00

    CPC分类号： C22B11/08

    摘要： A process for leaching gold and silver from ores and ore concentrates is disclosed using a cyanide leaching solution and hydrogen peroxide and maintaining an oxygen concentration of 2 to 20 Mg of O.sub.2 /liter. In the invention, leaching takes place in the presence of decomposition catalysts and preferably the formed cyano-complexes are separated during leaching from the leach solution. Decomposition catalysts are manganese compounds, present as 0.01 to 1 mg computed as Mn/liter of barren solution, or 1 to 50 mg computed as Mn per kg of ore slurry, or they are inorganic or organic polymers or carbon. Activated charcoal is preferred and simultaneously adsorbing cyano-complexes of precious metals. The process offers lowered consumption of H.sub.2 O.sub.2 and possibly cyanide and maximum gold yield in a shortened leaching time.

    摘要翻译： 公开了使用氰化物浸出溶液和过氧化氢并保持氧浓度为2至20Mg 2 /升的从矿石和精矿中浸出金和银的方法。 在本发明中，在分解催化剂的存在下进行浸出，优选在从浸出溶液浸出过程中形成的氰基络合物被分离。 分解催化剂是锰化合物，其存在0.01至1mg，以锰/升贫瘠溶液计算，或1至50mg以每kg矿浆计的Mn计算，或者它们是无机或有机聚合物或碳。 活性炭是优选的，同时吸附贵金属的氰基络合物。 该过程在缩短的浸出时间内提供了较低的H2O2消耗量和可能的氰化物和最大的黄金产量。

    Process for recycling of used lubricating oils
    6.
    发明授权
    Process for recycling of used lubricating oils 失效
    废旧润滑油再循环的方法

    公开(公告)号：US4366049A

    公开(公告)日：1982-12-28

    申请号：US192561

    申请日：1980-09-30

    申请人： Helmut Knorre ,  Manfred Langer ,  Friedrich Fauser ,  Willi Fischer

    发明人： Helmut Knorre ,  Manfred Langer ,  Friedrich Fauser ,  Willi Fischer

    IPC分类号： B01D1/22 ,  C10M175/00 ,  C10G7/00 ,  C10M11/00

    CPC分类号： B01D1/222 ,  C10M175/0016

    摘要： The object of the invention is a process for recycling used lubricating oils. After drying and gasoline removal, the oil is distilled and then treated with sodium or sodium hydride in a finely-divided state at elevated temperature. This is followed by a further distillation. Both distillations are at temperatures below 300.degree. C., the oil fractions of low volatility being respectively distilled in a molecular distillation apparatus at below 2 mbar.

    摘要翻译： 本发明的目的是再循环使用的润滑油的方法。 干燥和汽油除去后，将油蒸馏，然后用高分子状态的钠或氢化钠处理。 然后进一步蒸馏。 两种蒸馏温度都在300℃以下，分子蒸馏装置中低挥发性的油馏分分别在2毫巴以下蒸馏。

    Anticaking agent for inorganic salts
    8.
    发明授权
    Anticaking agent for inorganic salts 失效
    无机盐的防结块剂

    公开(公告)号：US3980593A

    公开(公告)日：1976-09-14

    申请号：US573335

    申请日：1975-04-30

    申请人： Helmut Knorre ,  Joachim Fischer

    发明人： Helmut Knorre ,  Joachim Fischer

    IPC分类号： B01J2/30 ,  C09K15/00 ,  A23L1/00

    CPC分类号： C09K15/00 ,  B01J2/30

    摘要： There is prepared a powdery anticaking agent for inorganic salts based on (A) an iron cyanide complex, (B) a water insoluble inorganic, inert, finely divided hydroxyl group containing material or a material able to form this in the production of the anticaking agent, (C) hydrophobizing and/or (D) hydrophilizing materials in which (A), (C) and/or (D) are employed on component (B) as a carrier together with (E) water in an amount of 20 to 50 weight percent, preferable 35 to 45 weight percent. The composition is prepared by intensively mixing the carrier (B) in the corresponding ratio in the dry state with the active materials at room temperature and then adding to this mixture so much water that the active components go into solution and as such are absorbed on the carrier and regulating the pH to 7 to 9, preferably 7 to 8.

    摘要翻译： 制备了基于（A）氰化铁络合物的无机盐粉末状抗结块剂，（B）水溶性无机，惰性，细分的含羟基的材料或能够在制造抗结块剂中形成的材料 ，（C）疏水化和/或（D）亲水化材料，其中（A），（C）和/或（D）在组分（B）上作为载体与（E）水一起以20至 50重量％，优选35〜45重量％。 通过将干燥状态下的载体（B）与室温下的活性物质的浓度混合，然后向该混合物中加入如此多的水，使活性组分进入溶液中并将其吸收在 载体并将pH调节至7至9，优选7至8。