Engineering Chemistry S Datta

METALLURGY 327
5. What do you mean by the study of metallurgy?
6. What is the concentration of ore?
7. Write down the different steps involved in the extraction of metals from corresponding ores.
8. Write short notes on:
(i) Crushing and Grinding
(ii) Oil floatation process
(iii) Calcination
(iv) Roasting
9. Briefly discuss the stages involved in concentration of ores.
10. What is flux? State the factors on which the selection of flux is based.
11. Describe different types of furnaces with their uses in metallurgy.
12. Write short notes on:
(i) Smelting
(ii) Welding
13. What is an alloy? Write (a) the importance of preparation of an alloy (b) general methods of
preparation of alloys. Give the composition and uses of the following alloys:
(i) Mild steel
(ii) Stainless steel
(iii) Manganese steel
(iv) Duralumin
(v) Alnico
(vi) Wrought iron
(vii) Magnelium
(viii) Brass
(ix) Bronze
(x) Solder
14. What is cementation?
15. Give general method of extraction of metals from their ores.
16. Write notes on:
(i) Pyrometallurgy
(ii) Hydrometallurgy
(iii) Goldschmidt thermit process
(iv) Electro-refining
(v) Zone refining
17. Briefly describe the methods involved in purification of metals extracted.
18. Write a short review on powder metallurgy.
19. Mention four advantages of powder metallurgy.
20. Discuss the various steps involved in powder metallurgy and mention its application.
21. (a) How is metal powder prepared? Describe any two applications of powder metallurgy.
(b) What is sintering in powder metallurgy?