09A51802 Nonferrous Extractive Metallurgy B.Tech Question Paper : sphoorthyengg.com
Name of the College : Sphoorthy Engineering College
University : JNTUH
Department : Metallurgy And Material Technology
Subject Code/Name : 09A51802/NONFERROUS EXTRACTIVE METALLURGY
Year : December 2011
Degree : B.Tech
Year/Sem : III/I
Website : sphoorthyengg.com
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/sphoorthyengg.com/4819-09A51802-NONFERROUSEXTRACTIVEMETALLURGY.pdf
Nonferrous Extractive Metallurgy Question Paper :
III B.Tech I Semester Examinations,December 2011
Metallurgy And Material Technology
Time: 3 hours
Related : Sphoorthy Engineering College 09A51803 Mechanical Metallurgy B.Tech Question Paper : www.pdfquestion.in/4817.html
Max Marks: 75
Answer any FIVE Questions :
All Questions carry equal marks :
1. Explain about the following:
(a) Smelting of nickel concentrates
(b) Differentiate between cementation and calcinations
(c) Differentiate between carbonization process and carbothermic reduction.[5+5+5]
2. (a) What are the different stages in converting matte to blister copper? Explain with relevant equations.
(b) Critically discuss the difference between Zinc blast furnace and Copper blast furnace. [7+8]
3. With the help of a neat sketch of the Hall-Heroalt cell describe its operation in detail and give the complete cell data. [15]
4. Explain about the following:
(a) Hansgrig process
(b) DOW process. [7+8]
5. Explain about the following
(a) Lead refining (In kettles)
(b) Production of lead in India. [15]
6. (a) Give an account of the use of chlorine in the extractive metallurgy of reactive metals. How it is used in titanium production?
(b) Discusses the significant contribution of Hunter process and what are the factors which will effect this process. [8+7]
7. Briefly discuss the following
(a) Chemical beneficiation of Uranium ores.
(b) Refining of Uranium. [8+7]
8. What are the harmful impurities in electrical grade Zinc and how are they eliminated during Zinc electro refining? [15]
Code No: 09A51802
R09 Set No. 4
1. (a) Discuss the chemistry of ash smelting with suitable examples.
(b) Differentiate between matte smelting and reduction smelting. [7+8]
2. Explain the production of Nickel from oxide ore by pyrometallurgical route (with flow sheet). [15]
3. List out the important ores/minerals, properties, sources and Industries in India of magnesium metal. [15]
4. Explain about the following
(a) Parke’s process
(b) How the problems associated with the condensation of lead vapours are over-come? [7+8]
5. List out the various methods used for recovery of uranium from solution and explain any one method from them. [15]
6. With a neat figure explain the Kroll’s process. [15]
7. (a) Why Aluminium is not extracted by pyrometallurgy route only hydrometallurgy route give reasons?
(b) Explain the role of cryolite in electrolysis of aluminium extraction. [7+8]
8. List out the following:
(a) Physical properties of Zinc
(b) Uses of Zinc
(c) Zinc industries in India
(d) Sources of Zinc. [4+4+4+3]
III B.Tech I Semester Examinations,December 2011 :
Nonferrous Extractive Metallurgy :
1. (a) Why in Uranium extraction vacuum Refining is used?
(b) Why chemical beneficiation is used in uranium ore upgradation?
(c) Why solvent extraction/Iron exchange are used as purication techniques in uranium extraction?
(d) What are the specific requirements needed for reactor grade uranium extraction?
2. With a neat ow sheet explain the production of titanium from Ilement ore. [15]
3. Discuss in detail about the production of hydrous magnesium chloride from
(a) Sea water
(b) Magnesite. [15]
4. (a) Explain the basic principle involved in the extraction of lead from galena mineral.
(b) Critically discuss the difference between lead blast furnace with iron blast furnace. [8+7]
5. Draw neatly the electrolytic reduction cell used for refining of Aluminium and also give the cell details & cell operation. [15]
6. Differentiate between
(a) The amalgamation process and cyanidation process.
(b) The chlorination process and the amalgamation process. [8+7]
7. Differentiate between:
(a) Horizontal retort and vertical retort reduction process
(b) Electro refining and re refining
(c) Zinc blast furnace and iron blast furnace. [5+5+5]
8. (a) Explain in detail about the leaching process which is used for copper production.
(b) What are the pre requisites for the selection of an effective reagent for leaching
and list out the methods used for the recovery of metallic values for the leach solution? [8+7]