Machine-translated by Google. Questions are authored in English.
Top

Discussion

China clay is separated from the granite matrix chiefly by

  • A.burning off the unwanted minerals
  • B.washing and hydraulic classification
  • C.melting the granite at high temperature
  • D.dissolving the quartz in strong acid

Answer: B

High-pressure water frees the kaolinite and carries it away while the coarse quartz and mica settle out. The fine fraction is then classified further to reach the particle size the market wants. Paper-coating grades are far finer than ceramic grades.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.