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 pasir kromit kadar rendah melalui proses benefisiasi dengan variabel temperatur dan waktu reduction roasting = Enhancement of low grade chromite sand through beneficiation process with the variation of temperature and time on reduction roasting

Peningkatan kadar dan rasio pasir kromit kadar rendah melalui proses benefisiasi dengan variabel jumlah reduktor batubara dan aditif caso4 pada reduction roasting = The enhancement of chromium grade and its ratio from local low grade chromite sand through beneficiation process with the variation of reductant and caso4 as additive dosage on reduction roasting process

Proses pembuatan ferromangan pada submerged arc furnace dengan menggunakan campuran bijih mangan kadar rendah dan kadar menengah = Ferromanganese process using submerged arc furnace with mixed low grade and medium grade manganese ore

Pengolahan Pasir Kromit Rendah Sebagai Bahan Baku Ferokrom melalui Proses Benefisiasi Termal dengan Variabel Jumlah Aditif CaO dan CaSiO3, Temperatur Reduksi Roasting, serta Jumlah Reduktor Batubara = Processing of Low Chromite Sand as Ferrochrome Raw Material through Thermal Beneficiation Process with Variable Amount of CaO and CaSiO3 Additives, Reduction Roasting Temperature, and Amount of Coal Reductant