The effect of rice husk addition in limonite ore roasting reduction beneficiation process = Efek dari penambahan sekam pada proses benefisiasi bijih limonit dengan roasting reduction

Utilization of rice husk on limonite ore reduction process = Pengunaan sekam dalam proses reduksi bijih limonit

Studi pengaruh konsentrasi NaOH pada pelindian limonit terhadap kadar akhir nikel dan kobalt = Study on the effect of NaOH concentration on limonite leaching toward final contents of nickel and cobalt

Studi pengaruh waktu pelindian terhadap peningkatan kadar nikel pada proses pelindian limonite menggunakan NaOH = Study of influence time in the improvement of nickel contents on limonite processing using NaOH

Penambahan proses kuens media air sebagai alternatif proses pelindian air panas pada ekstraksi nikel limonit Sulawesi Selatan untuk menurunkan kadar silika = Study of quenching treatment as alternative way of hot water leaching treatment to decrease silica content in Southern Sulawesis limonite ore