Write down the reactions taking place in different Zones in the blast furnance during the extraction of Iron.
How can you separate alumina from silica in a baxuite ore associated with silica? Give equations, if any.
Cast iron |
Pig iron |
1.It is obtained by melting pig iron with scrap iron and coke using hot air blast. It contains about 3% carbon. |
1. It is obtained from the blast furnace. It contains about 4% carbon and other impurities like S, P, Si, and Mn. |
2. It has a slightly lower melting point than pig iron. |
2. It has slightly higher melting point than cast iron. |
Name the processes from which chlorine is obtained as a bye-product. What will happen if an aqueous solution of NaCl is subjected to electrolysis?
Outline the principles of refining of metals by the following methods:
(i) Zone refining.
(ii) Electrolytic refining.
(iii) Vapour phase refining.