The 'shanks system' of leaching (i.e., counter-current multiple contact leaching) is used for____________________?
Correct answer: C. Both A. and B.
- A. Recovery of tannis from the tree barks and woods
- B. Leaching sodium nitrate from Chilean nitrate bearing rock
- C. Both A. and B.
- D. Neither A. nor B.
Explanation
The Shanks system is a countercurrent multiple-contact leaching process used for extracting tannins from bark and wood and for leaching sodium nitrate from Chilean nitrate-bearing rock. Thus both listed applications are valid.
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