Silica is added to roasted copper ores during | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Silica $(SiO_2)$ is added during the smelting process to remove iron oxide $(FeO)$ impurities present in the roasted copper ore.During roasting,ir

Vedclass · Accepted Answer

ferrous oxide

Vedclass · Answer

(B) Silica $(SiO_2)$ is added during the smelting process to remove iron oxide $(FeO)$ impurities present in the roasted copper ore.During roasting,iron sulfides present in the ore react with oxygen to form iron oxides $(FeO)$.$2FeS + 3O_2 ightarrow 2FeO + 2SO_2$Silica acts as an acidic flux and reacts with the basic impurity $FeO$ to form a fusible slag,iron silicate ($FeSiO_3$ or $FeO \cdot SiO_2$).$FeO + SiO_2 ightarrow FeSiO_3 	ext{ (slag)}$This slag is less dense than the molten matte and can be easily removed.

Silica is added to roasted copper ores during extraction in order to remove

Similar Questions

In which of the following metallurgy,self-reduction is not possible?

Which one of the following oxides is reduced by water gas to obtain the metal during its extraction?

Heating an ore with carbon in the absence of air is known as ....

In which of the following production processes is limestone $(CaCO_3)$ $NOT$ used?

Which of the following metals is commercially reduced by the carbon reduction method and refined by the distillation method?

Vedclass Test Series

Exam Paper Generator

Online Exam Module