Influence of recycled wastes on ferrosilicon production in steel making applications: A short review

Abstract The potential transforming the waste materials into an alternative source was found in iron and steelmaking application that also would solved the world’s most problematic waste stream. Generally, converting the waste materials into auxiliary source only is accessible to certain wastes industries due to its difficulty to recycle hence generally landfilled. Recycling waste materials used in ferrosilicon production as carbon and silica source to control the reduction reaction with iron oxide. The present paper reviews the phase transformation and morphology in the production of ferrosilicon at temperature 1550°C on graphite and plastic waste (bakelite) as the potential carbon materials and silica powder and glass waste (automotive glass - windshield, window glass) as alternatives silica source in production of ferrosilicon. The utilization of carbon material from plastic waste and silica source from glass waste (automotive glass) can be used for ferrosilicon synthesis and CO gas concentration comparable with conventional carbon source (graphite) typical silica source (silica powder). The utilization of recycled wasted is efficient due to enhancement in the reaction with iron oxide thus potentially replacing the conventional materials in ferrosilicon synthesis as well as minimizing the landfill wastes.