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

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

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

Pengaruh Sodium Sulfat (Na2SO4) dan Temperatur Roasting Terhadap Pemulihan Mineral Besi dari Red Mud dengan Menggunakan Metode Reduction Roasting - Magnetic Separation = The Influence of Sodium Sulfate (Na2SO4) and Roasting Temperature on The Recovery of Iron Mineral from Red Mud Using the Reduction Roasting - Magnetic Separation Method

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