Mr Jeroen, the MD and the self-titled ‘Refining guy’, confirmed that Umicore can return about 96% of ‘sweeps’ including recovery from solution.
The fees would be about 3% deduction in the amount of gold and about 1% as a refining charge. So Miki for every kilo of gold included in solution, Miki should get 970g back together with an invoice.
If Miki wants to be paid in plating solution, then the amount of gold returned will be less because of the cost of producing the solutions and the profit margin for Umicore on their plating solutions.
Umicore plans to clear this up with you tomorrow.
I hope this helps.