Explain poling reaction and cyanide process
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Poling reaction :-
- Poling (metallurgy) :Once the first oxidation stage is complete, the second stage (reduction or poling) begins.
- This involves using a reducing agent, normally natural gas or diesel (but ammonia, liquid petroleum gas, and naphtha can also be used), to react with the oxygen in the copper oxide to form copper metal.
Cyanide process:-
- It is the process of extracting gold or silver from the ores by dissolving in a dilute solution of potassium cyanide or sodium cyanide.
- This process was introduced in the year 1887 by the Scottish chemists naming Robert W. Forrest, John S. MacArthur, and William Forrest
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