Jan 01, 2020 · The recovery was calculated using the following formula: 1 R e c o v e r y = M c o n c e n t r a t e × % C u c o n c e n t r a t e M c o n c e n t r a t e × % C u c o n c e n t r a t e + M t a i l i n g s × % C u t a i l i n g s where M concetrate is the weight (mass) of the concentrate in grams after flotation, %Cu concentrate is the copper