Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a__________________?
Correct answer: B. Pug mill
- A. Mixer-extruder
- B. Pug mill
- C. Banbury mixer
- D. Muller mixer
Explanation
A pug mill is designed to continuously mix and knead moist or plastic solids, so it can combine molten ammonium nitrate with ground limestone in fertilizer manufacture. Banbury and muller mixers are used for more specialized intensive mixing duties.
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