P T. Antam UBPE Pongkor is a gold mining entity in Indonesia. For this reason, in the gold ore processing process, there is another processing method that is more environmentally friendly than the cyanidation method, namely the flotation method. In the flotation method, tailings does not require many stages, so it is cheaper in terms of costs. The aim of this study is to see the effect of collector concentration and flotation time on gold recovery from PT gold ore. Antam uses the flotation method. This study uses the flotation experimental method. The mineral content in the ore is analyzed using XRD, while the gold content in the ore uses the XRF method. Flotation in this study used a particle size of -200 mesh with a feed amount of 300 grams, a water volume of 1.5 liters, a frother volume (pine oil) of 10 mL, a volume of pH modifier (Na2SiO3) given until it reached the target pH of 8. The variable that was varied was the dose. collectors are 20 ml, 25 ml, and 30 ml and flotation times are 10 minutes, 15 minutes, and 20 minutes. The flotation results were then tested for Au content using XRF.