Newbie question, melting gold

Hi all! I have some gold dust/ fine scrap which I want to melt onto a

What I’m wondering is, what sort of temperature is it going to melt
at, and is it likely to ball up or the melt flat onto the bigger
object (gold ring of the same carat)? Would the best way to go about
it be to flux the ring liberally and spread the dust onto the fluxed
area? Hope this isn’t too vague a question.

Thanks in advance!