Chemical Engineering
Q Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of__________________?
  • A A. Bronze
  • B B. Stainless steel
  • C C. Flint or porcelain
  • D D. Concrete
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