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- Wohlwill_process abstract "The Wohlwill process is an industrial-scale chemical procedure used to refine gold to the highest degree of purity (99.999%). The process was invented in 1874 by Emil Wohlwill. This electrochemical process involves using a cast dore ingot, often called a Doré bar, of 95%+ gold to serve as an anode. Lower percentages of gold in the anode will interfere with the reaction, especially when the contaminating metal is silver or one of the platinum group elements. The cathode(s) for this reaction are small sheets of pure (24k) gold sheeting or stainless steel. Current is applied to the system, and electricity travels through the electrolyte of chloroauric acid. Gold and other metals are dissolved at the anode, and pure gold (coming through the chloroauric acid by ion transfer) is plated onto the gold cathode. When the anode is dissolved, the cathode is removed and melted or otherwise processed in the manner required for sale or use. The resulting gold is 99.999% pure, and of higher purity than gold produced by the other common refining method, the Miller process, which produces gold of 99.5% purity.For industrial gold production Wohlwill process is necessary for highest purity gold applications, and when lower purity gold is required refiners often utilize the Miller process due to its relative ease, quicker turnaround times, and because it does not require a large inventory of gold, in the form of chloroauric acid, on site at all times.".
- Wohlwill_process wikiPageID "4007780".
- Wohlwill_process wikiPageRevisionID "550349396".
- Wohlwill_process hasPhotoCollection Wohlwill_process.
- Wohlwill_process subject Category:Gold.
- Wohlwill_process subject Category:Metallurgical_processes.
- Wohlwill_process type Abstraction100002137.
- Wohlwill_process type Act100030358.
- Wohlwill_process type Activity100407535.
- Wohlwill_process type Event100029378.
- Wohlwill_process type MetallurgicalProcesses.
- Wohlwill_process type Procedure101023820.
- Wohlwill_process type PsychologicalFeature100023100.
- Wohlwill_process type YagoPermanentlyLocatedEntity.
- Wohlwill_process comment "The Wohlwill process is an industrial-scale chemical procedure used to refine gold to the highest degree of purity (99.999%). The process was invented in 1874 by Emil Wohlwill. This electrochemical process involves using a cast dore ingot, often called a Doré bar, of 95%+ gold to serve as an anode. Lower percentages of gold in the anode will interfere with the reaction, especially when the contaminating metal is silver or one of the platinum group elements.".
- Wohlwill_process label "Procédé Wohlwill".
- Wohlwill_process label "Wohlwill process".
- Wohlwill_process sameAs Procédé_Wohlwill.
- Wohlwill_process sameAs m.0bc6sx.
- Wohlwill_process sameAs Q3406603.
- Wohlwill_process sameAs Q3406603.
- Wohlwill_process sameAs Wohlwill_process.
- Wohlwill_process wasDerivedFrom Wohlwill_process?oldid=550349396.
- Wohlwill_process isPrimaryTopicOf Wohlwill_process.