Lesson 2/Practice Exercise Answers
12.
Final gradation check:
Your new product is 70.83 tph, calculated 5.21 tph + 65.62 tph = 70.83 tph, for each 75-tph plant.
Therefore, your total new product for your complex is 141.66 tph, calculated 2 x 70.83 tph = 141.66 tph
(you have two 75-tph plants, remember). Your specifications are met.
Note: Assume that one-half of the 5.21 TPH by-product is +1/4 and one-half is smaller than 1/4 inch
aggregate. That is why 5.21 x 0.5/70.83 x 100 = 3.68
75
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