Penggunaan bahan bakar antrasit dan campuran antrasit-kokas pada proses sinter bijih nikel saprolit = Utilization of anthracite fuel and anthracite-coke fuel mixture in the sintering process of nickel saprolite

Pengaruh penambahan reduktor sub - bituminous dan briket kokas kadar 10%,13%, 15%, 20% terhadap produk reaksi karbotermik bijih nikel saprolit = Effect of 10%, 13%, 15%, 20% briquette cokes and sub- bituminous reductor addition on the carbothermic reaction product of saprolite nickel ore

Pengaruh kokas dalam proses reduksi bijih mangan lokal kadar menengah pada submerged arc furnace menjadi ferromangan = Effect of coke in the local medium grade of manganese ore reduction process into ferromanganese with submerged arc furnace

Pengaruh campuran reduktor coal-coke dalam proses reduksi biji mangan lokal pada submerged arc furnace = Effect of mix reductant coal-coke in process reductin local manganese ore in the submerged arc furnace

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