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) Bronze
(B) Stainless steel
(C) Flint or porcelain
(D) Concrete

1 Answer

Answer :

(C) Flint or porcelain

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