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Assignment 3 Solutions - 1 The wt is calculated as 100 The...

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2 1. The wt (%) is calculated as ࠵?࠵?࠵?࠵?࠵?࠵? ࠵?࠵?࠵? 100 ࠵?࠵? ࠵?࠵? ࠵?࠵?࠵?࠵? ࠵?࠵?࠵?࠵?࠵?࠵? ࠵?࠵?࠵? The Ni. Grade & wt is from the stream measured value of Nickel The Unit Factors is calculated as ࠵?࠵? % ࠵?࠵? . ࠵?࠵?࠵?࠵?࠵? % ࠵?࠵? The Ni Recovery % ࠵?࠵?࠵?࠵? ࠵?࠵?࠵?࠵?࠵?࠵? 100 ࠵?࠵? ࠵?࠵? ࠵?࠵?࠵?࠵? ࠵?࠵?࠵?࠵? ࠵?࠵?࠵?࠵?࠵?࠵?࠵? The Grade and Recoveries of Flowsheet 1 The Grade and Recoveries of Flowsheet 2
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3 The Grade and Recoveries of Flowsheet 3
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4 The Graph of Cumulative Ni Grade/Recovery Performance Curve Notes: The Chart shows the performance curve (Nickel grade%) and the quantity ( represented by the Nickel recovery %). There is an increase in the Ni grade and the Ni recovery are increase as we move forward from flowsheets. There is a significant improvement between the 1978 and the early 2000's Ni grades and recoveries, which reflects the industry’s development and growth. 2. (i) Determine the amount of water recycled from thickener (cub. m/day) to grinding circuit. 0.00 5.00 10.00 15.00 20.00 25.00 0.0 20.0 40.0 60.0 80.0 100.0 120.0 NiGradewt(%) Ni Recovery (%) Flow Sheet 1 Flow Sheet 2 Flow Sheet 3
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