ABSTRAK<
Ekstratksi tin dari sumber sekunderterbukti menjadi altematifyang atraktif
melihat dari permintaan produksi timah yang tems bertumbuh. Terak timah, yang
tergolong sumber sekunder, masih menyisakan timah oksida sekitar 1 sampai 3%.
Literature studi menunjukkan, untuk melakukan leaching dari terak timah secara
efektif, formasi silica gel hams di cegah, oleh karenanya asam oksalat dipilih. Empat
parameter leaching, konsentrasi asam oksalat, waktu, temperature, dan rasio, dipilih
untuk mengekstrak tin (sebagai target) beserta titanium, tantalum, dan niobium.
Eksperimen menunjukan, bahwa parameter leaching paling optimum berada di 24
jam waktu leaching, pada 50 C dan 10% rasio cairan dan solid.
ABSTRACTRecovering tin from secondary resource proves to be an attractive
alternative tin resource to help satisfy the ever-growing tin demands. Tin slag,
considered as a secondary resource, still consist of tin in the form of oxides
approximately 1 - 3%. Studies found that in order to leach tin slag effectively the
formation of S,ilica gel has to be prevented, hence oxalic acid was chosen as the
leaching reagentofor the study. Four leaching parameters, oxalic acid concentration,
leaching time, leaching temperature and solid liquid ratio, were tested through the
experiment to extract tin as the primary metal, along with titanium, tantalum and
niobium. The experiment concluded that the optimum leaching time is at 24 hours
with a temperature of 50 C at 10% solidiliqvid ratio.