All Questions
Tagged with extraction metal
6
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Extraction of copper from chalcopyrite
During the extraction of copper from chalcopyrite ore, the ore ($\ce{Cu2S.Fe2S3}$) is heated to form $\ce{Cu2S}$ and $\ce{FeS}$. Then during smelting it reacts with $\ce{O2}$ to form $\ce{Cu2O}$.
Then ...
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In Na extraction, is Ca2+ of CaCl2 reduced in addition to Na+ of NaCl in electrolysis
In Na extraction from $\ce{NaCl}$, $\ce{CaCl2}$ is added in electrolysis to lower the melting point of the mixture to about $\pu{750 ^\circ C}$. But doesn't $\ce{Ca^2+}$ cation compete with the $\ce{...
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Need of refining aluminium and Hoope vs Hall–Héroult processes
Recently I was taught how aluminium is commercially extracted. The ore is first concentrated by leaching either by Bayer's process for red bauxite (impurity: $\ce{Fe2O3}$) or by Serpeck's process for ...
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Why do we use coke instead of coal in order to reduce FeO as basic reaction in ironmaking process?
Why is coke used as a reducing agent to reduce FeO to produce iron instead of coal.I admit that coke is carbonaceous but what is it that compels us to use coke instead of the naturally available coal?
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Extraction of nickel from its ores [closed]
How is nickel mined and extracted from its ores?
What are the appropriate word and chemical equations for this process?
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Metal extraction by pyrolysis
There is a process named solar furnace pyrolysis which is used to reduce the oxides of various elements by concentrating solar energy. Oxygen is liberated but an oxide slag is left.
$$\ce{SiO2 ->[...
