1. Flotation of Cu-Au, PGM and Cu-Mo
Group 1
Taylan Berkkam
Bedrettin Ozakyuz
Cem Sarikaya
Ertuna Cakir
Lecturers: Prof. Dr. Zafir Ekmekci and Asst. Prof. Ozlem Bicak

2. ACACIA Mining Bulyanhulu Au-Cu Flotation
TANZANIA

3. Run of Mine Upper East Zone 3g/t Au, 0.2% Cu
Lower Mine 10g/t Au, 0.5% Cu

4. Ore Content
Chalcopyrite (Cu)
Auriferous Pyrite (Au)
Native Gold

5. Aim
Floating Chalcopyrite
Discarding Pyrite
Gravity Separation

6. Flowsheet Rougher Cleaner PAX-Aerophine as Collector Aerophine
Betafroth frother Lime pH 11-12
pH Betafroth
Carboxyl methyl cellulose (CMC)

7. PGM Minerals There are more than 100 PGM minerals.
These minerals are subjected to a wide range of elemental substution.
These sulphide deposits are able to concentrate these metals by a factor of 100–1000 ppm and form PGM deposits, together with precious metals, nickel and copper. Almost always the PGM deposits contain nickel minerals.

8. PGM Dominated Deposits
Morensky type deposits
Hydrothermal deposits
Place deposits

9. Effect of Mineralogy on Recovery of PGMs
From a processing point of view, PGM-containing ores can be divided into three general groups as follows:
ores amenable to gravity pre-concentration,
ores amenable to flotation
ores that can only be treated using a hydrometallurgical route.

10. Ores Amenable to Flotation
Based on flotation processing characteristics, these ores can be divided into the following major groups:
PGM sulphide-dominated deposits
PGE-dominated deposits

11. Flotation of PGM Containing Ores
Flotation properties of PGM from sulphide dominated deposits
Pyrrhotite
Chalcopyrite and pentlandite
Violarite

12. Reagent Practice in Flotation of PGM Sulphide-dominated Ores
Activators
Collectors
Depressants
CuSO4
(CMC) Carboxymethyl Cellulose
Oxalic Acid and Thiourea
Primary
Xanthate(SIBX)
Secondary
Dithiophosphates & Mercaptans
Guar gum
pH=9-10

13. Flotation of Sulphide Dominated Ores
There can be some variation in this flowsheet, such as (i) retreatment of the cleaner tailings, (ii) regrinding the scavenger concentrate and iii) the number of cleaning stages.
This flowsheet is used in several operations from the Bushveld Complex (South Africa), Stillwater Complex (USA) and Lac des Illes (Canada).

14. Reagent Schemes Used to Treat PGM Containing Ores

15. Copper Molybdenum Flotation
Application Field Of Molybdenum
80% of Mo are being used in steel industry; to increase mechanical properties of steel and to produce stainless steel.
20% of Mo are being used in some chemical applications.
in addition, saleable Mo concentrate must include at least 50% of Mo and not exceed 0.5% of Cu in Mo Concentrate

16. The study of low-grade porphyry copper-molybdenum ore obtained from the Kirklareli region of Turkey
The Effect of Grinding

17. The study of low-grade porphyry copper-molybdenum ore obtained from the Kirklareli region of Turkey
The Effect of pH

18. The study of low-grade porphyry copper-molybdenum ore obtained from the Kirklareli region of Turkey
The same experiment with Na2S
At pH 6
At pH 12

19. The study of low-grade porphyry copper-molybdenum ore obtained from the Kirklareli region of Turkey
Effect of Frothers

20. The study of low-grade porphyry copper-molybdenum ore obtained from the Kirklareli region of Turkey
Depressant Selection
Effect of Sodium Sulfide
Effect of Nokes
Phosphorus Pentoxide-Sodium Hydroxide

21. The study of low-grade porphyry copper-molybdenum ore obtained from the Kirklareli region of Turkey
Effect of lignosulphonate
Sodium Metabisulfite

22. The study of low-grade porphyry copper-molybdenum ore obtained from the Kirklareli region of Turkey
Effect of Sodium Cyanide

23. The study of low-grade porphyry copper-molybdenum ore obtained from the Kirklareli region of Turkey
Effect of Collectors

24. The study of low-grade porphyry copper-molybdenum ore obtained from the Kirklareli region of Turkey
Conclusion
Molybdenum Flotation:The selective molybdenum flotation has carried out at pH value of 12 , Na2SiO3 as silicate depressant , 10 g/ton Na2S as copper depressant , 440 g/ton kerosene as collector and 56 g/ton pine oil as frother.
Copper Flotation: The selective copper flotation has carried out at pH value of 12 , 100 g/ton Aero 3302 as collector , 28 g/ton pineoil.
Reference
Kırklareli Demirköy-Sivriler Molibden Cevherinin Flotasyon ile Zenginleştirilmesi. Şükriye Beste EVEN (05 Haziran 2009)