MetallurgyHard
Question
Which of the following statement is incorrect about the extractive metallurgy of copper ?
Options
A.Matte chiefly consists of iron sulphide and some ferrous oxide.
B.The impurity of iron sulphide is removed as fusible slag, FeSiO3 during roasting.
C.The copper pyrite is concentrated by froth floatation process.
D.Copper is obtained by self reduction in bessemer converter.
Solution
In actual process the ore is heated in a reverberatory furnace after mixing with silica. In the furnace, iron oxide ′slags off′ as iron silicate and copper is produced in the form of copper matte which contains mostly Cu2S and some FeS.
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