MIDLANDS STATEUNIVERSITY
FACULTY OF SCIENCE AND TECHNOLOGY
DEPARTMENT OF CHEMICAL TECHNOLOGY
MINERAL PROCESSING 1
CODE: CT 109
SESSIONAL EXAMINATIONS
MAY/JUNE 2016
DURATION: 3 hours
INSTRUCTIONS
Answer Question No. 1 and Any Three from the remaining
questions
QUESTION 1
(a) Discuss the advantages of mineral processing.
[10 marks]
(b) Draw a simplified flowsheet forthe various stages involved in ore processing.
[10 marks]
(c)What are the important exploitable characteristics used in separation ofminerals.
[5 marks]
QUESTION 2
(a) (i) List different types of crushers.
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[5 marks]
(ii) Draw a simplified diagram of Blake Jaw Crushershowing different parts. [10 marks]
(b) Discuss the factors affecting comminution operation.
[10marks]
QUESTION 3
(a) Derive equation showing 'Terminal Velocity' dependence on small spherical
particle size & densities of particle & fluid under free settling conditions. [5 marks]
(b) Explain in brief 'Dense Media Separation' and describe different media employed
for the operation with examples.
[10 marks]
(c )What do you understand by 'Open circuit' and Closed circuit' grinding? Is it
true that rod mill can run with 'Open circuit' but ball mill cannot ? Justify.
[10 marks]
Question 4
i. List six methods of particle size analysis and give a brief description with labelled
diagrams of equipment for elutriation.
[15 marks]
ii. What are the major obstacles that are encountered in mineral processing? Suggest
possible solutions.
[10 marks]
Question 5
i. What are the essential requirements of a good accounting and control system in
Mineral processing?
[3 marks]
ii. What is the role of computer control in mineral processing plants?
[10 marks]
iii. In moisture sampling, grab sampling is used for moisture determination. What does
this method entail and state one major advantage and one major disadvantage of
[12 marks]
the method?
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END OF EXAMINATION