摘要:
This invention relates to an apparatus for producing a metal powder product using either conventional electrowinning or alternative anode reaction chemistries in a flow-through electrowinning cell. A new design for a flow-through electrowinning cell that employs both flow-through anodes and flow-through cathodes is described. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes, direct electrowinning, or alternative anode reaction chemistry.
摘要:
The present invention relates, generally, to a method for electrowinning copper powder, and more particularly to a method for electrowinning copper powder from a copper-containing solution using the ferrous/ferric anode reaction. In accordance with various embodiments of the present invention, a process for producing copper powder by electrowinning employs alternative anode reaction technology, namely, the ferrous/ferric anode reaction, and enables the efficient and cost-effective production of copper powder at a total cell voltage of less than about 1.5 V and at current densities of greater than 50 A/ft2. A copper powder electrowinning process in accordance with the present invention also reduces or eliminates acid mist generation that is characteristic of electrowinning operations utilizing conventional electrowinning chemistry (e.g., oxygen evolution at the anode), which is advantageous.
摘要翻译:本发明一般涉及一种电解冶金铜粉的方法,更具体地涉及一种使用亚铁/三价铁阳极反应从含铜溶液中电解提取铜粉的方法。 根据本发明的各种实施方案,通过电解冶金制备铜粉的方法采用替代性阳极反应技术,即亚铁/三价铁阳极反应,并且能够以总电池电压有效和成本有效地生产铜粉 小于约1.5V且电流密度大于50A / ft 2。 根据本发明的铜粉电解提取方法还减少或消除了利用常规电解冶金化学(例如阳极氧气析出)的电解提取操作的特征的酸雾产生,这是有利的。
摘要:
This invention relates to a system and method for producing a metal powder product using either conventional electrowinning or alternative anode reaction chemistries in a flow-through electrowinning cell. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes, direct electrowinning, or alternative anode reaction chemistries.
摘要:
This invention relates to a system and method for producing a metal powder product using conventional electrowinning chemistry (i.e., oxygen evolution at an anode) in a flow-through electrowinning cell. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes and/or direct electrowinning.
摘要:
A molded transparent thermoplastic housing has a programmable transmitting circuit for transmitting seal identifying serial number, seal location, container identification and other data to a local receiver. A door in the housing permits access to the circuit for programming the seal indicia and related data for transmission. A contact arrangement forms a switch upon insertion of a locking bolt into a locking mechanism in the housing and applies battery power through the bolt to activate the data generating circuit. A conductor along the bolt shank is connected to the circuit provides a tamper evident signal to the circuit when the bolt is severed. The circuit senses the removal of the bolt or severed bolt condition for generating a “tamper” signal which is transmitted to a local receiver/reader. The conductor at the bolt may be a wire in a plastic tube surrounding the shank, a conductive layer over an insulation layer on the shank and over the conductive bolt head in ohmic contact with the head or a wire in a hollow metal tube. Severing the bolt severs the wire or the ohmic contact between the head and coating or between the head and the wire in the tube to indicate tampering. The seal periodically in random periods transmits the seal condition, whether normal or tampered. In an alternative embodiment, an interrogation unit may interrogate the seal which then transmits its locked or tampered states according to the locked or tampered condition of the bolt.
摘要:
An elongated channel protector has an end wall that precludes axial displacement of the protector along an elongated rail car plug door operating handle in one direction. Angle shaped members extend from the protector laterally for engaging a cover appurtenance on the door for precluding axial displacement of the protector in the opposite direction. A pair of legs depend from the protector side walls and have aligned holes for receiving a bolt seal. Tubular elements surround the holes to protect the seal head and locking body. The seal is seated beneath the handle which is covered by the protector locking the protector to the handle.