In this study two different wastes generated during Brazilian stainless steelmaking were tested. They were agglomerated in the briquette form mixed with FeSi75 and CaO. The CaO was added to adjust the final basicity respectively to 0.5, 1 and 1.5. Then six kinds of briquettes were performed and used. Tests were carried out in a laboratory piece of equipment where 1020 steel was melted at 1,600oC under inert atmosphere. In each test one briquette of waste was introduced in liquid steel and steel samples were withdrawn periodically. The results shown that the chromium oxide reduction occurs at basicity equal or greater than one despite of the alumina content in the slag. key-words: Wastes; Chromium; Dust; Sludge; Steel plant.