In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of _______________?
Correct answer: C. Steel
- A. Concrete
- B. Wood
- C. Steel
- D. Porcelain
Explanation
Steel tanks are commonly used for Kraft-process black and white liquors because they provide the required mechanical strength and can be protected against the alkaline liquor by suitable material selection or lining. Wood and porcelain are unsuitable for large, heavy-duty storage tanks.
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