Question: A 1 2 0 , 0 0 0 - f ^ 3 leach bed contains 0 . 5 0 wt % CuO. The bulk bed

A 120,000-f ^3 leach bed contains 0.50 wt%CuO. The bulk bed density is 105 lb / ft^3 with a 0.33 void fraction. Leach acid is used to extract 92% of the copper content in 75 days. The average extraction rate (lb / hr) of CuO is most nearly:

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