Peningkatan kadar mangan dan rasio mangan/besi dari bijih mangan kadar rendah lokal melalui proses benefisiasi dengan vasriasi waktu reductio roasting = Enhancement of mn fe ratio from local low grade manganese ore through beneficiation with reduction roasting time as a variant

Peningkatan kadar dan rasio mangan pada bijih mangan lokal kadar rendah melalui proses benefisiasi dengan variabel temperatur pada reduction roasting = The enhancement of manganese grade and its ratio from local low grade manganese ore through beneficiation process with the variation of temperature on reduction roasting process

Studi pengaruh ukuran bijih terhadap proses reduksi langsung bijih besi bongkah menjadi bijih besi spons menggunakan tanur putar sederhana skala rumah tangga = Study of ore size effect on direct reduction process of iron ore to sponge iron using home industrial scale rotary kiln

Studi pengaruh tegangan dan waktu perendaman terhadap bentuk korosi pada baja dari bijih besi laterite = Study of stress effect and immersion time to form corrosion of steel from laterite iron ore

Studi pengaruh waktu reduksi pada penggunaan ampas tebu sebagai reduktor pada pengolahan bijih besi = Study of reduction time effect using bagasse as reducing agent on iron ore processing