Question: Table 1: Zinc Rougher data for Assignment 2. Note the particle size is in mesh; wt% denotes weight percent of a particular stream Feed Concentrate

Table 1: Zinc Rougher data for Assignment 2. Note the particle size is in mesh; wt% denotes weight percent of a particular stream Feed Concentrate Tailings Size, mesh Wt% % Zn Wt% %Zn Wt% %Zn 6.96 2.55 28.50 8.34 65 100 3.09 10.98 11.55 0.65 0.60 13.65 13.57 42.60 150 42.20 0.44 14.11 15.10 12.83 8.03 13.50 13.09 14.30 8.85 13.95 9.17 200 270 40.30 39.30 0.40 0.39 8.65 9.02 400 12.97 8.62 12.87 35.30 13.00 0.33 500 8.57 8.11 29.900 6.93 23.32 6.56 22.36 0.29 0.67 -500 8.95 26.40 31.3 1. Calculate the overall Zn assay for each stream (2 marks) 2. Calculate the size-by-size recovery (4 marks)
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