?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENINGKATAN+KADAR+DAN+PEROLEHAN+NIKEL+HASIL%0D%0AREDUKSI+SELEKTIF+BIJIH+NIKEL+LATERIT+KADAR%0D%0ARENDAH+DENGAN+ADITIF+NATRIUM+SULFIDA+DAN%0D%0AREDUKTOR+ANTRASIT+DALAM+PRODUKSI+FERONIKEL&rft.creator=Riska+Nadia+Tirmayani%2C+1417041071&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=530+Fisika&rft.description=Telah+dilakukan+penelitian+reduksi+selektif+bijih+nikel+laterit+kadar+rendah+dengan%0D%0Amenggunakan+aditif+natrium+sulfida+10%25+berat+dan+reduktor+antrasit+5%25%2C+10%25+dan%0D%0A15%25+berat.+Penelitian+ini+dilakukan+untuk+mengetahui+pengaruh+temperatur%2C+dosis%0D%0Areduktor+antrasit+dan+waktu+tahan+reduksi+terhadap+kadar+dan+recovery+besi+nikel%0D%0Adalam+ferronikel.+Proses+reduksi+selektif+dilakukan+pada+temperatur+950+oC%2C+1050%0D%0AoC+dan+1150+oC+dengan+waktu+tahan+selama+60+menit%2C+90+menit+dan+120+menit%0D%0Adiikuti+dengan+proses+pemisahan+magnetik+untuk+menghasilkan+konsentrat+dan%0D%0Atailing.+Karakterisasi+XRD+hasil+reduksi+selektif+menunjukkan+fasa+yang+dominan%0D%0Aseperti+iron+nickel+(FeNi)%2C+iron+sulfide+(FeS)%2C+fayalite+(Fe2SiO4)+dan+wuestite%0D%0A(FeO).+Karakterisasi+XRF+menunujukkan+nilai+optimum+yaitu+pada+temperatur%0D%0A1150+oC+dengan+reduktor+10%25+dan+waktu+tahan+reduksi+selama+60+menit+dengan%0D%0Akadar+dan+recovery+nikel+masing-masing+sebesar+3%2C026%25+dan+89%2C32%25.+Ukuran%0D%0Apartikel+ferronikel+pada+sampel+tersebut+terbentuk+dengan+rata-rata+ukuran+butir%0D%0Asebesar+29%2C23.%0D%0AKata+kunci%3A+bijih+nikel+laterit%2C+reduksi+selektif%2C+uji+karakterisasi.%0D%0AExperiments+have+been+carried+out+selective+reduction+of+low+grade+laterite+nickel%0D%0Aore+by+using+the+additive+sodium+sulfide+10%25+by+weight+and+a+reductant+anthracite%0D%0A5%25%2C+10%25+and+15%25+by+weight.+This+study+was+conducted+to+determine+the+effect+of%0D%0Atemperature%2C+anthracite+and+a+reductant+dose+reduction+resistant+to+high+levels+of%0D%0Airon+and+nickel+in+ferronickel+recovery.+The+process+of+selective+reduction+carried%0D%0Aout+at+a+temperature+of+950%EF%82%B0C%2C+1050%EF%82%B0C+and+1150%EF%82%B0C+with+a+holding+time+of+60%0D%0Aminutes%2C+90+minutes+and+120+minutes+followed+by+magnetic+separation+process+to%0D%0Aproduce+a+concentrate+and+tailings.+Characterization+of+selective+reduction+XRD%0D%0Aresults+show+that+the+dominant+phase+such+as+iron+nickel+(FeNi)%2C+iron+sulfide%0D%0A(FeS)%2C+fayalite+(Fe2SiO4)+and+wuestite+(FeO).+Characterization+XRF+shows%0D%0Aoptimum+value+at+a+temperature+of+1150%EF%82%B0C+with+reductant+10%25+and+holding+time%0D%0Areduction+for+60+minutes+with+a+nickel+grade+and+recovery+respectively+3.026%25%0D%0Aand+89.32%25.+The+particle+size+of+ferronickel+in+the+sample+formed+with+an+average%0D%0Agrain+size+of+29%2C23%CE%BCm.%0D%0AKeywords%3A+nickel+laterite+ore%2C+selective+reduction%2C+characterization+test.&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%2F57342%2F1%2FABSTRAK-ABSTRACT.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57342%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57342%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++Riska+Nadia+Tirmayani%2C+1417041071++(2019)+PENINGKATAN+KADAR+DAN+PEROLEHAN+NIKEL+HASIL+REDUKSI+SELEKTIF+BIJIH+NIKEL+LATERIT+KADAR+RENDAH+DENGAN+ADITIF+NATRIUM+SULFIDA+DAN+REDUKTOR+ANTRASIT+DALAM+PRODUKSI+FERONIKEL.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F57342%2F