Studi pengaruh penambahan batubara pada proses roasting reduction bijih nikel saprolit dan pelindian (leaching) dalam larutan asam sulfat 1 molar = Study of coal addition effect on roasting reduction process of saprolitic nickel ore and leaching in sulfuric acid 1 molar

Pengaruh reduksi roasting pada bijih nikel saprolit dan perbedaan konsentrasi pada pelindian atmosferik asam sulfat = The effect reduction roasting of nickel using saprolite ore and various concentration of atmospheric sulphuric acid leaching

Pengaruh reduksi roasting dan konsentrasi leaching asam sulfat terhadap recovery nikel dari bijih limonit = Recovery of nickel using limonite ore: the effect of reduction roasting and sulphuric acid at various concentration

Studi pengaruh temperatur reduksi pada peningkatan kadar nikel bijih saprolit melalui proses reduksi karbotermik dengan batubara = Study of the effect of reduction temperature on nickel saprolite ore level enhancement through carbothermic reduction process with coal

Studi Pengaruh Penambahan Aditif Na2CO3 terhadap Kadar Nikel dalam Pengolahan Bijih Limonit Menggunakan Metode Roasting = Study of the Effect of Na2CO3 Addition to Nickel Content in Processing Limonite Ore Using Roasting Method