TUCKER, GA. — CoalTek, a developer of technology for clean coal, has closed on $5 million in new “B” round financing, according to Private Equity Wire.

CoalTek, which is based in Tucker, drew funding from Warburg Pincus, Draper Fisher Jurvetson, DFJ Element and Braemar Energy Partners.

All are returning investors, Private Equity Wire said.

CoalTek: www.coaltek.com