When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ____________.
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ____________.
The concentrated ore is roasted in a reverberatory furnace.
\(2CuFeS_2+O_2\rightarrow Cu_2S+2FeS+SO_2\)
\(2FeS+3O_2\rightarrow 2FeO+2SO_2\)
\(2Cu_2S+3O_2+2Cu_2O+2SO_2\)
Iron is more reactive than copper. So, \(FeS\) is preferentially oxidized to \(FeO~\text{than}~Cu_2S~\text{to}~Cu_2O\).
(Roasted ore mainly consist of \(Cu_2S~\text{and}~FeO\) with some unreacted \(FeS\).)
For removal of \(FeO\), silica (flux) is mixed to form silicate
slag.
\(FeO+SiO_2\rightarrow FeSiO_2\)
In furnace entire mass melts and form two layers of molten mass. Slag being lighter makes the upper layer and which is easily separated by lower molten layer.
The lower molten layer is Copper matte. It mainly consists of \(Cu_2S~\text{and some}~FeS\).
The copper matte contains sulphides of copper and iron with oxidation states \(+1~\text{and}~+2~\text{in}~Cu_2S~\text{and}~FeS\) respectively.
The concentrated ore is roasted in a reverberatory furnace.
\(2CuFeS_2+O_2\rightarrow Cu_2S+2FeS+SO_2\)
\(2FeS+3O_2\rightarrow 2FeO+2SO_2\)
\(2Cu_2S+3O_2+2Cu_2O+2SO_2\)
Iron is more reactive than copper. So, \(FeS\) is preferentially oxidized to \(FeO~\text{than}~Cu_2S~\text{to}~Cu_2O\).
(Roasted ore mainly consist of \(Cu_2S~\text{and}~FeO\) with some unreacted \(FeS\).)
For removal of \(FeO\), silica (flux) is mixed to form silicate
slag.
\(FeO+SiO_2\rightarrow FeSiO_2\)
In furnace entire mass melts and form two layers of molten mass. Slag being lighter makes the upper layer and which is easily separated by lower molten layer.
The lower molten layer is Copper matte. It mainly consists of \(Cu_2S~\text{and some}~FeS\).
The copper matte contains sulphides of copper and iron with oxidation states \(+1~\text{and}~+2~\text{in}~Cu_2S~\text{and}~FeS\) respectively.
