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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 [Wrong Answer] |
B. | stainless steel [Wrong Answer] |
C. | flint or porcelain [Correct Answer] |
D. | concrete [Wrong Answer] |