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 penambahan karbon pada proses reduksi langsung batu besi = Study of carbon addition effect to the direct reduction process of lump ore

Studi pengaruh variasi temperatur operasi terhadap hasil reduksi langsung bijih besi menggunakan cangkang kelapa sawit sebagai reduktor = Study on the effect of variation in operation temperature to the result of iron's ore direct reduction using palm kernel shell as the reductor

Proses karbotermik proses dari pig iron nugget menggunakan bijih besi kadar rendah asal indonesia = Carbothermic process of pig iron nugget using low grade iron ore from indonesia

Studi pengaruh variasi massa reduktor terhadap hasil reduksi langsung bijih besi menggunakan cangkang kelapa sawit sebagai reduktor = Study on the effect of variation in reductor's mass to the result of iron ore's direct reduction using palm kernel shell as the reductor