MNE 411 Exam 1 Questions & Answers 2024/2025
Mineral processing in essential is a separation of the valuable minerals from the gangue. - ANSWERSTrue
Gaudin wrote the Handbook of Ore Dressing. - ANSWERSFalse
Crushing and grinding are used to physically liberate the valuable minerals from ...
Mineral processing in essential is a separation of the valuable minerals from the gangue. - ANSWERSTrue
Gaudin wrote the Handbook of Ore Dressing. - ANSWERSFalse
Crushing and grinding are used to physically liberate the valuable minerals from the gangue. -
ANSWERSTrue
Separation is NOT possible if there is NO difference between the valuable minerals and the gangue. -
ANSWERSTrue
Most copper mines are located in eastern US and coal mines are mainly in western US. - ANSWERSFalse
Increasing processing time can give higher recovery. So, in practice, one can increase as much as possible
the processing time to increase metal recovery and therefore the profits. - ANSWERSFalse
Copper oxide ore is usually treated by leaching with H2SO4. - ANSWERSTrue
Separation can be done according to the difference in sample's properties, such as particle size,
hardness, density, conductivity, magnetism and hydrophobicity. - ANSWERSTrue
Gold is a precious metal because its abundance is so low. - ANSWERSTrue
In a processing plant, the grade of concentrate should be higher than that of tailing. - ANSWERSTrue
If the recovery of a process is 100%, all the metals/value minerals are in the concentrate. - ANSWERSTrue
, If the recovery of a process is 100%, the concentrate contains only valuable mineral. - ANSWERSFalse
In a copper concentrator, mineral processing, as mentioned in class, will improve the Cu grade from 0.3%
to about 25~28%. - ANSWERSTrue
Flotation (mill) is widely applied in mineral processing for the concentration of Copper sulfide ore. -
ANSWERSTrue
Tailing dam can introduce serious environmental problems, such as dust and waste water, to the
community. - ANSWERSTrue
People usually process/treat FeS2 ore to produce Fe (iron). (hint: what about Fe2O3?) - ANSWERSFalse
In industry, a ~100% copper recovery must be achieved to recover as much copper as possible. -
ANSWERSFalse
Resolution copper Superior mine is a deep underground copper mine. Although its operation cost is
much higher than a common open-pit mine, it is still profitable mainly because the copper ore grade of
Superior mine is much higher. - ANSWERSTrue
The Cu% of a 80% pure covellite (CuS) sample is about 53.2%. (Atomic mass number: Cu 64, S 32) -
ANSWERSTrue
Cotton is hydrophobic (water-repellent). - ANSWERSFalse
Autoclave can be used to treat ROM ore (CuFeS2) both efficiently and economically, because of the high
T and high P.. - ANSWERSFalse
Pyrite (FeS2) is a source of acid rain and AMD(acid mine drainage), and therefore, it is always a bad thing
in a mine. - ANSWERSFalse
CuFeS2 is difficult to leach by H2SO4 at normal temperature and pressure. - ANSWERSTrue
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Bensuda. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.99. You're not tied to anything after your purchase.
