Binance exchange has a minimum buy and sell value. If you have any cryptocurrencies below that, there’s no way for you to sell it or transfer it out. Users ended up collecting small chunks of Cryptocurrencies they could no longer sell. Though they’re not huge, they all add up.
The announcement was made directly by Binance CEO, Changpeng Zhao, in a slightly comedic Twitter post. The new feature, which is available directly on the user balance page, enables easy conversion of dust to Binance’s exchange coin (BNB).
Binance allows users to sell their dust and receive Binance Tokens (BNB) instead.
I hear the team has built a broom, who wants it?
— CZ (@cz_binance) April 24, 2018
The feature is now live at the time of writing this article. After logging in, head over to Funds -> Balances at the top right corner of the page. Once you’re in, click on the small balances filter. All coins with small balances are listed and you can select the ones you want to convert to BNB. This BNB can then be traded for other cryptocurrencies on the exchange and this process of converting dust can be done only once in 24 hours.
Source : ICOnow