?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+JUMLAH+REDUKTOR%2C+TEMPERATUR+DAN+WAKTU%0D%0ATAHAN+PADA+PROSES+REDUKSI+SELEKTIF+BIJIH+LATERIT+KADAR%0D%0ANIKEL+RENDAH-ALUMINA+TINGGI+(0%2C5+Ni-44+Fe-16+Al2O3)&rft.creator=Wahyuningsih%2C+1517041010&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=530+Fisika&rft.description=Telah+dilakukan+penelitian+tentang+Pengaruh+Jumlah+Reduktor%2C+Temperatur+dan%0D%0A%0D%0AWaktu+Tahan+pada+Proses+Reduksi+Selektif+Bijih+Laterit+Kadar+Nikel+Rendah-%0D%0AAlumina+Tinggi+(0%2C5Ni-44Fe-16+Al2O3).+Bijih+nikel+laterit+direduksi+dengan%0D%0A%0D%0Abatubara+antrasit+sebanyak+5+sampai+15%25+berat+reduktor+batubara+antrasit+dan10%25%0D%0Aberat+natrium+sulfat+dengan+temperature+950oC%2C+1050oC%2C+dan+1150oC+dengan%0D%0Awaktu+tahan+60+menit%2C+90+menit%2C+dan+120+menit.+Proses+pemisahan+magnetic+untuk%0D%0Amemisahkan+konsentrat+dan+tailing.Analisis+dilakukan+dengan+AAS%2C+XRD+dan%0D%0ASEM.+Proses+optimal+menunjukkan+pada+reduksi+nikel+dengan+10%25+berat+antrasi%0D%0Atpada+temperatur+1050%C2%B0C+dengan+waktu+120+menit+menghasilkan+0%2C84%25+kadar%0D%0Anikel+di+konsentrat.+Fasa+troilite+tidak+dihasilkan+pada+proses+reduksi+nikel.+Kadar%0D%0Abesi+(Fe)+meningkat+seiring+dengan+peningkatan+temperature+reduksi.+Semakin%0D%0Alama+waktu+tahan+pada+proses+reduksi+selektif+maka+dapat+meningkatkan+kadar%0D%0Anikel+tetapi+menurunkan+kadar+besi.%0D%0AKata+kunci%3A+reduksi+selektif%2C+pemisah+magnetik%2C+bijih+nikel%2C+natrium+sulfat%2C+antrasit%0D%0AIn+this+present+study%2C+the+effect+of+reductant+dosage%2C+temperature+and+holding+time%0D%0Aon+selective+reduction+process+of+high+alumina-lateritic+nickel+ore+have+been%0D%0Ainvestigated+clearly.+The+lateritic+nickel+ore+was+reduced+with+5+until+15+wt.+%25%0D%0Aanthracite+and+10+wt.%25+sodium+sulfate+at+reduction+temperature+of+950%C2%B0C%2C1050%C2%B0C%0D%0Aand1150%C2%B0C+for+60%2C+90+and+120+minutes.+Magnetic+separation+process+was+then%0D%0Aconducted+to+separate+the+concentrate+and+tailing.+The+analysis+of+reduced+nickel%0D%0Aore+is+performed+by+the+Atomic+Absorption+Spectroscopy%2C+X-Ray+Diffraction%2C+and%0D%0AScanning+Electron+Microscopy.+The+optimal+process+resulted+from+the+reduction%0D%0Aof+nickel+ore+with+10+wt.+%25+anthracite+at+the+temperature+of+1050%C2%B0C+for+120%0D%0Aminutes+which+resulted+in+0%2C84%25+nickel+in+concentrate.+The+troilite+was+not+found%0D%0Ain+reduced+ore.+The+iron+grade+increased+along+the+increased+of+reduction%0D%0Atemperature.+The+longer+of+holding+time+in+selective+reduction+process+increased%0D%0Athe+nickel+grade+but+it+decreased+the+iron+grade.%0D%0AKeywords%3A+selective+reduction%2C+magnetic+separation%2C+nickel+ore%2C+sodium+sulfate%2C%0D%0A%0D%0Aanthracite&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2019&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57359%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57359%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57359%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++Wahyuningsih%2C+1517041010++(2019)+PENGARUH+JUMLAH+REDUKTOR%2C+TEMPERATUR+DAN+WAKTU+TAHAN+PADA+PROSES+REDUKSI+SELEKTIF+BIJIH+LATERIT+KADAR+NIKEL+RENDAH-ALUMINA+TINGGI+(0%2C5+Ni-44+Fe-16+Al2O3).++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F57359%2F