Sudan Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Belgium was US$1 during 2016, according to the United Nations COMTRADE database on international trade. Sudan Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Belgium - data, historical chart and statistics - was last updated on May of 2024.