Hello dear Risa;

Normally there are a lot of items are available in flotation such as (collector type and dosage, pH modifiers and adjusted pH, dispersing and depressing agents, conditioning and frothing times and so on.  I advise you firstly carry-out detailed mineralogical investigation and recognize types of copper minerals (Sulfide, Oxide or mixture of both), waste minerals, amount of fine particles and clays; liberation degree of copper minerals from wastes and then you should design your flotation tests.

If you have mixture of copper minerals, first you should float sulfide by means of Xanthate and thereafter apply Hydroxamate for flotation of oxide fractions.

It is difficult question for get accurate advice for setting pH and conditioning and frothing times, but as rule of thumb I should say if you want to improve Cu grade you should set pH above 7 (probably in range of 7-8) but if recovery is important for you also, I think you should carry out some tests in more alkali pH (above 9; Probably in rage of 8.5-10). About conditioning and frothing times; I think 4-5 minutes could be good starts for your tests.

I have checked my database and found 2 papers which are enclosed; I hope it can be useful for you.

Regards,

Hamed

Thank you so much, Hamed.

Dear Risa Mar Santes

Hello

The important parameteres in copper flotation are (collector type and dosage, pH modifiers and adjusted pH, dispersing and depressing agents, conditioning and frothing times and so on. please pre-study such as mineralogical and characterisation studies, then you find effective parameters and up and down level in parameter.

Finally, you can use the experimental design with DX7 software and optimised the tests.

Regards