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10 条记录 (耗时 0.016 秒)

    Electric smelting of lead sulphate residues
    1.
    发明授权
    Electric smelting of lead sulphate residues 失效
    电冶炼硫酸铅残留物

    公开(公告)号：US4135912A

    公开(公告)日：1979-01-23

    申请号：US771429

    申请日：1977-02-24

    申请人： Ian G. Matthew ,  Ralph W. Pickering ,  Takashi Suzuki ,  Hisashi Uchida

    发明人： Ian G. Matthew ,  Ralph W. Pickering ,  Takashi Suzuki ,  Hisashi Uchida

    IPC分类号： C22B11/02 ,  C22B13/00 ,  C22B13/02 ,  C22B4/04 ,  C22B13/06

    CPC分类号： C22B13/02 ,  C22B11/021 ,  Y02P10/214

    摘要： A process for treatment of lead residues, without prior sintering, in which residues more than 70% of the lead is present as lead sulphates, comprising addition of the said residues, together with a reductant containing carbon and together with fluxes that will react to provide a slag containing FeO, CaO and SiO.sub.2, directly to an electric furnace operating at a temperature of 1000 to 1500.degree. C in the slag layer to produce in the furnace a lead bullion. The expression "lead sulphates" will be understood to include lead sulphate and other compounds containing lead and the sulphate ion, for example, the basic lead sulphates.

    摘要翻译： 一种用于处理铅残留物的方法，无需先前烧结，其中残余物超过70％的铅作为硫酸铅存在，包括加入所述残余物以及含有还原剂的还原剂以及与反应提供的助熔剂 含有FeO，CaO和SiO2的炉渣，直接在炉渣层中在1000〜1500℃的温度下工作的电炉，在炉内产生铅块。 术语“硫酸铅”将被理解为包括硫酸铅和含铅和硫酸根离子的其它化合物，例如碱性硫酸铅。

    Method and apparatus for the determination of electrochemically active components in a process stream
    2.
    发明授权
    Method and apparatus for the determination of electrochemically active components in a process stream 失效
    用于确定工艺流中电化学活性组分的方法和装置

    公开(公告)号：US4804443A

    公开(公告)日：1989-02-14

    申请号：US076485

    申请日：1987-07-22

    申请人： Oliver M. G. Newman ,  Alan M. Bond ,  Robert W. Knight

    发明人： Oliver M. G. Newman ,  Alan M. Bond ,  Robert W. Knight

    IPC分类号： G01N27/48 ,  C25C1/16 ,  G01N20060101 ,  G01N27/26 ,  G01N27/34 ,  G01N27/42

    CPC分类号： G01N27/42 ,  G01N27/34

    摘要： A method and apparatus for determining electrochemically active components in a process stream. The method comprises the steps of providing a sample in which the components are contained, and depositing the components onto a working electrode, altering the environment of the working electrode so that it is immersed in a supporting electrolyte by effecting a matrix exchange and stripping the deposited electrochemically active components from the working electrode into the supporting electrolyte. The method and apparatus utilize a measurement cell which comprises a vessel (10) for containing the supporting electrolyte and a mercury drop electrode (150). A flow injector (16) is used to inject a flow of a sample electrolyte which contains the electrochemically active component; and into the vessel so that the sample electrolyte surrounds the mercury drop electrode and then sinks away from the mercury drop electrode (150) to the bottom of the vessel where it is removed via an outlet (20) to thereby leave the mercury electrode (150) immersed in the supporting electrolyte. The deposited impurities are stripped from the working electrode using variable time domain transient electrochemical stripping voltammetry. The sequence of steps including the deposition of the impurities from an injected flow of electrolyte sample are repeated under microprocessor control (50).

    摘要翻译： 一种用于确定工艺流中的电化学活性组分的方法和设备。 该方法包括以下步骤：提供其中包含组分的样品，并将组分沉积到工作电极上，改变工作电极的环境，使其通过进行基质交换并剥离沉积的 电化学活性成分从工作电极进入支持电解质。 所述方法和装置利用测量单元，其包括用于容纳支撑电解质的容器（10）和汞滴电极（150）。 流动注射器（16）用于注入包含电化学活性成分的样品电解质流; 并且进入容器，使得样品电解质围绕汞滴电极，然后从汞滴电极（150）离开到容器的底部，通过出口（20）去除其中，从而离开汞电极（150） ）浸入支持电解质中。 使用可变时域瞬时电化学汽提伏安法将沉积的杂质从工作电极剥离。 在微处理器控制下重复包括从注入的电解质样品流中沉积杂质的步骤顺序（50）。

    Process for solution control in an electrolytic zinc plant circuit
    4.
    发明授权
    Process for solution control in an electrolytic zinc plant circuit 失效
    电解锌厂回路中溶液控制的工艺

    公开(公告)号：US4437953A

    公开(公告)日：1984-03-20

    申请号：US379491

    申请日：1982-05-18

    申请人： Oliver M. G. Newman ,  David J. Palmer ,  Robert V. Pammenter

    发明人： Oliver M. G. Newman ,  David J. Palmer ,  Robert V. Pammenter

    IPC分类号： C01G9/06 ,  C22B19/00 ,  C25C1/16 ,  C25C7/06

    CPC分类号： C25C1/16 ,  C01G9/06 ,  C22B19/26 ,  C25C7/06 ,  Y02P10/234

    摘要： A process for controlling the water balance and the concentration of impurities in an electrolytic zinc plant circuit with which is operated at least one selective zinc precipitation (SZP) process plant which comprises one or more of the steps(a) a two-stage SZP process plant in which a compound containing calcium carbonate is used in the first-stage to precipitate portion of the zinc in incoming solution, and a compound R containing zinc oxide, preferably calcined zinc sulphide concentrate, is used to precipitate most of the remaining zinc;(b) displacement of the zinc depleted solution associated with solids leaving the SZP process plant by solution drawn from the electrolytic zinc plant circuit, and(c) use of a compound R with a particular average particle size.

    摘要翻译： 一种用于控制电解锌装置回路中的水平衡和杂质浓度的方法，其中运行至少一个选择性锌沉淀（SZP）工艺装置，其包括以下步骤（a）中的一个或多个步骤：（a）两阶段SZP工艺 在第一阶段使用含有碳酸钙的化合物使进入溶液中的锌的部分沉淀的装置，并且使用含有氧化锌，优选煅烧硫化锌浓缩物的化合物R沉淀大部分剩余的锌; （b）通过从电解锌装置回路抽出的溶液离开SZP工艺装置的固体相关的贫化锌溶液的移位，和（c）使用具有特定平均粒度的化合物R.

    Process for precipitating iron as jarosite with a low non-ferrous metal content
    5.
    发明授权
    Process for precipitating iron as jarosite with a low non-ferrous metal content 失效
    将铁沉淀为具有低有色金属含量的黄钾铁矾的方法

    公开(公告)号：US4305914A

    公开(公告)日：1981-12-15

    申请号：US75948

    申请日：1979-09-17

    申请人： Robert V. Pammenter ,  Curzon J. Haigh

    发明人： Robert V. Pammenter ,  Curzon J. Haigh

    IPC分类号： C01G9/06 ,  C01G49/00 ,  C01G49/14 ,  C21B3/04 ,  C21B15/00 ,  C22B3/20 ,  C22B3/44

    CPC分类号： C01G9/06 ,  C01G49/009 ,  C01G49/14 ,  C21B15/00 ,  C21B3/04 ,  C22B19/26 ,  C22B3/20 ,  C22B3/44 ,  C01P2004/62 ,  C01P2006/80 ,  Y02P10/234 ,  Y02W30/542

    摘要： A process for precipitating iron as a jarosite from a sulphate solution containing ferric iron, free acid and valuable non-ferrous metals, characterized by cooling the solution; partially neutralizing the free acidity, and then clarifying the solution; heating the clarified solution to a temperature not exceeding the boiling point at atmospheric pressure, in the presence of at least one ion selected from the group consisting of sodium, potassium and ammonium ions, and in the presence of recycled jarosite, and without the addition of any further neutralizing agent, so that substantially all of the ferric iron is precipitated as a jarosite; and separating precipitated jarosite from the solution; thereby producing a jarosite contaminated with only minor amounts of non-ferrous metals, and a solution which may be further processed by established procedures for the recovery of dissolved valuable non-ferrous metals therefrom. The invention also contemplates a dilution step, and recycle of jarosite.

    摘要翻译： 一种从含有三价铁，游离酸和有价值的有色金属的硫酸盐溶液中析出铁作为黄钾铁矾的方法，其特征在于冷却溶液; 部分中和游离酸度，然后澄清溶液; 在至少一种选自钠，钾和铵离子的离子存在下，在再生的黄钾铁矾存在下，将澄清溶液加热到不超过大气压沸点的温度，并且不加入 任何进一步的中和剂，使得基本上所有的三价铁作为黄钾铁矾沉淀; 并将沉淀的黄钾铁矾与溶液分离; 从而产生仅被少量有色金属污染的黄钾铁矾，以及可以通过用于从其中回收溶解的有价值的有色金属的既定程序进一步加工的溶液。 本发明还考虑了稀释步骤和回收黄钾铁矾。