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Question 2 In gold cyanide leaching circuit, it is known that 5% of the gold is refractory and this is not accessible to
Posted: Mon May 16, 2022 9:33 pm
by answerhappygod
- Question 2 In Gold Cyanide Leaching Circuit It Is Known That 5 Of The Gold Is Refractory And This Is Not Accessible To 1 (54.85 KiB) Viewed 63 times
Question 2 In gold cyanide leaching circuit, it is known that 5% of the gold is refractory and this is not accessible to the cyanide. It can be assumed that the remaining gold leaches with apparent first order kinetics. The feed to the circuit is 400 t/hr of solids at a pulp density of 50% by weight. The average solid density is 2.5. Each tank (Pachuca) in the circuit has a volume of 1000m”. The ore contains 10g/t gold. a) If the recovery in the first tank is 40%, what is the rate constant for the leachable gold? (remember to account for the refractory fraction) b) If an overall recovery of at least 85% is required, how many tanks in series are needed? c) Assuming 85% recovery, what is the gold concentration in solution?