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公开(公告)号：US4439288A
公开(公告)日：1984-03-27
申请号：US512453
申请日：1983-07-11
申请人： James E. Hoffmann
发明人： James E. Hoffmann
CPC分类号： C25C1/16 , C22B19/26 , Y02P10/234
摘要： The present invention contemplates treating a zinc sulfate containing solution, especially a neutral leach filtrate with a reducing agent selected from ZnSO.sub.3, SO.sub.2 or mixtures thereof to substantially reduce the oxidant therein and to obtain a solution having a predetermined pH. Thus, in one embodiment of the present invention, a neutral leach filtrate containing an oxidant selected from permanganate and manganate ions and mixtures thereof is treated with a reducing agent selected from ZnSO.sub.3, SO.sub.2 or mixtures thereof in amounts sufficient to substantially reduce all the manganese ions present (permanganate and/or manganate) to the divalent state and to provide a zinc sulfate solution for electrodeposition of the zinc having a predetermined pH.
摘要翻译： 本发明考虑用选自ZnSO 3，SO 2或其混合物的还原剂处理含硫酸锌的溶液，特别是中性浸出滤液，以大大减少其中的氧化剂并获得具有预定pH的溶液。 因此，在本发明的一个实施方案中，含有选自高锰酸盐和锰酸盐离子的氧化剂的中性浸出滤液及其混合物用选自ZnSO 3，SO 2或其混合物的还原剂进行处理，其量足以显着降低所有锰离子 存在（高锰酸盐和/或锰酸盐）至二价态，并提供用于电沉积具有预定pH的锌的硫酸锌溶液。
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2.发明授权Energy efficient self-regulating process for winning copper from aqueous solutions 失效从水溶液中获取铜的能量效率自调节过程
公开(公告)号：US4367128A
公开(公告)日：1983-01-04
申请号：US240756
申请日：1981-03-05
申请人： John S. Batzold , James E. Hoffmann
发明人： John S. Batzold , James E. Hoffmann
CPC分类号： C25C1/12
摘要： The present invention is predicated upon the discovery that in the electrowinning of copper from solutions thereof, a hydrogen fed porous catalytic anode can be caused to operate under such conditions of constant current flow whereby a dynamic equilibrium will be imposed upon the hydrogen fed anode so that the anode will behave as a normal copper anode in a refining mode. This is particularly true when such a hydrogen fed anode is deactivated by copper buildup on the surface of the electrode.
摘要翻译： 本发明基于以下发现：在从其溶液中电解提取铜的过程中，可以使氢供给的多孔催化阳极在恒定电流流动的这种条件下进行操作，由此对供氢阳极施加动态平衡，使得 在精炼模式下，阳极将表现为正常的铜阳极。 当这种供氢阳极由电极表面上的铜积聚而失活时尤其如此。
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公开(公告)号：US4270213A
公开(公告)日：1981-05-26
申请号：US47385
申请日：1979-06-11
摘要： A channel selector system in a radio for sequentially selecting one of a plurality of channels and rapidly scanning through any restricted channels such that the restricted channels are not displayed and appear to be skipped. The radio includes a frequency synthesizer for generating a predetermined frequency associated with each selected channel and the channel selector system has a signal generator which causes the frequency synthesizer to sequentially either step or scan through the channels including some channels which may be restricted. The generator provides an output coded signal to indicate selection of a restricted channel which is decoded by decoding circuitry. A scan timer is responsive to the decoded signal to cause the signal generator to rapidly scan through restricted channels. A latching circuit latches a signal generator input during rapid scanning through restricted channels until the system advances to the next unrestricted channel. Related methods are disclosed.
摘要翻译： 无线电中的频道选择器系统，用于顺序地选择多个频道中的一个，并通过任何受限频道快速扫描，使得受限频道不被显示并且似乎被跳过。 无线电设备包括用于产生与每个所选择的信道相关联的预定频率的频率合成器，并且频道选择器系统具有信号发生器，其使得频率合成器顺序地通过包括可能被限制的一些信道的信道的步进或扫描。 发生器提供输出编码信号以指示由解码电路解码的受限通道的选择。 扫描定时器响应于解码信号，使得信号发生器通过受限通道快速扫描。 锁存电路在快速扫描期间通过受限通道锁存信号发生器输入，直到系统进入下一个无限制通道。 公开了相关方法。
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公开(公告)号：US3996046A
公开(公告)日：1976-12-07
申请号：US599868
申请日：1975-07-25
CPC分类号： C22B11/04
摘要： A method is provided for extracting silver from a silver sulfate-bearing substance, such as oxide materials, metal or metal sulfate mixtures containing silver sulfate which comprises subjecting said substance to aqueous leaching to remove soluble salts therefrom and leave a residue, taking the residue containing silver sulfate and other insoluble materials, such as insoluble salts, and forming a slurry with an aqueous solution of a metal sulfate, such as calcium nitrate, the amount of calcium nitrate being at least sufficient to effect metathetical exchange with the silver sulfate and form a silver nitrate solution containing substantially the silver originally present in the silver-sulfate bearing substance, and separating the silver nitrate solution from the residue remaining, and then purifying said solution, the silver being thereafter recovered from the silver nitrate solution by hydrolytic precipitation, electrowinning or other suitable means.
摘要翻译： 提供了一种从含有硫酸银的物质例如氧化物材料，含有硫酸银的金属或金属硫酸盐混合物中提取银的方法，其包括使所述物质进行含水浸出从其中除去可溶性盐并留下残余物，将含有 硫酸银和其他不溶性物质如不溶性盐，并用金属硫酸盐如硝酸钙的水溶液形成浆料，硝酸钙的量至少足以与硫酸银进行元交换并形成 硝酸银溶液含有最初存在于含有硫酸银的物质中的银，并将剩余的残余物中的硝酸银溶液分离，然后纯化所述溶液，然后通过水解沉淀，电解沉积或硝酸银溶液从硝酸银溶液回收银 其他合适的手段。
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公开(公告)号：US4421552A
公开(公告)日：1983-12-20
申请号：US369074
申请日：1982-04-16
CPC分类号： C22B15/0052 , C22B15/0015 , C22B15/0047 , C22B15/0097
摘要： The present invention contemplates providing a finely divided copper calcine and thereafter subjecting the calcine to reduction flash smelting. Indeed, significant processing advantages are achieved by dead roasting a finely divided copper concentrate, especially in a fluid bed reduction zone, and thereafter subjecting the resulting calcine to reduction flash smelting. Gases from the dead roaster and the flash smelter are combined for SO.sub.2 recovery in an acid plant.
摘要翻译： 本发明考虑提供细碎的铜煅烧物，然后对煅烧物进行还原闪蒸。 实际上，通过对细碎的铜精矿进行死去焙烧，特别是在流化床还原区中，然后使所得的煅烧物进行还原闪蒸熔炼来实现显着的加工优点。 来自死烤炉和闪电熔炼炉的气体在酸性装置中合并用于SO2回收。
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公开(公告)号：US4208631A
公开(公告)日：1980-06-17
申请号：US918549
申请日：1978-06-23
CPC分类号： H04W88/185
摘要： A remote control system and method therefor is disclosed that includes a control station coupled by a two-wire line to a base station having a transmitter for providing simplex radio communications to mobile radios. The control station utilizes digital pulsed DC signalling to select a radio channel of the base-station transmitter for transmission of each message. In response to activation of a transmission switch, the control station applies a DC voltage to the two-wire line and thereafter applies a command pulse train having a predetermined number of pulses corresponding to the selected radio channel. The base station is responsive to the DC voltage on the two-wire line for receiving the command pulse train. The pulses in the received command pulse train are totalized, and the base station transmits the message on the radio channel corresponding to the totalized number of pulses.
摘要翻译： 公开了一种遥控系统及其方法，其包括通过双线线路耦合到具有用于向移动无线电提供单工无线电通信的发射机的基站的控制站。 控制站利用数字脉冲DC信令来选择基站发射机的无线电信道，用于传输每个消息。 响应于传输开关的激活，控制站向双线线路施加直流电压，然后施加具有与所选无线电信道相对应的预定数量脉冲的指令脉冲串。 基站响应于用于接收指令脉冲串的双线线路上的直流电压。 接收到的命令脉冲串中的脉冲被合计，并且基站在对应于总计脉冲数的无线电信道上发送消息。
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