P PT AMNT is a mining company and processing copper ore to techniqueflotation.Flotation PT AMNT use the bait of the cyclone overflow ( cof ) and cleanerscavenger tail ( cst ) in re-sirkulasikan to the rougher.The copper content ( cu ) high incst cst economical that still to be changed, but in cst there are also the acid solublecopper ( ascu ) high.The ascu indicates that cst be on condition that oxidized and has anypyrites high.Can solve the problems posed by cst it flotation undergone a variation inaddition to point cst rougher-scavenger and adding nahs as a reagent sulfidasi.Trialbegan with the sample cst cof and plant production of pt amnt.Samples were conductedhomogenization.Mixing cof composition and cst on research is about 97,5 % cof and 2,5% cst. A method of flotation can be done is control potencially applicable to besulfidisation ( cst ) conforms to the standards pt amnt .Experiment flotation donein the same manner with the variation of the point of the project of increasing thecst in stage of the 1 , 2 , and 3 .The variations of which is based on the by theaddition of nahs ( adjust ice = -500 mv ) .From the data the results of experimentsconducted flotation by the use of cst without the addition of nahs , obtained giventhe recent increase in publicly listed financial services company following itsappreciation cu loan and deposit was forced to retire from the point of the projectof increasing the cst .The addition of cst in stage of the 1 , by the addition of nahsresults in increased publicly listed financial services company cu loan and deposit.The addition of cst in stage of the 2 and 3 , by the addition of the prey or causesits nahs there was a decline in publicly listed financial services company cu loanand deposit .The addition of cst in stage of the 1 , without the addition of nahsresults in increased publicly listed financial services company cu loan and deposit.The addition of cst in stage of the 2 and 3 , without the addition of the prey or