Borax slime is formed during the production of borax from tincal, which is an important berate ore. It is a liquid containing the suspanded solid particles at high levels and is formed under the rich-in-borax solution in the reactor. This waste is discharged into the Marmara Sea and so causes environmental problems in Bandirma Golf. In this work, Borax production is aimed from the slime containing B2O3 at important levels. As a result it was found that B2O3 can be recovered and therefore the B2O3 pollution can be prevented by removing it from the waste.