Indonesian Journal of Pure and Applied Chemistry
Vol 4, No 3 (2021)

KOMPOSISI UNSUR DAN MINERAL DALAM PASIR BESI, RESIDU BAUKSIT DI PT. INDONESIA CHEMICAL ALUMINA (ICA) (ELEMENTAL COMPOSITION AND MINERALS IN IRON SAND, BAUXITE RESIDUE AT PT. INDONESIA CHEMICAL ALUMINA (ICA)

Imelda Hotmarisi Silalahi (Department of Chemistry, Tanjungpura University)
Nikmatun Khasanah (Department of Chemistry, Tanjungpura University)
Titin Anita Zaharah (Department of Chemistry, Tanjungpura University)



Article Info

Publish Date
15 Nov 2021

Abstract

Iron sand is obtained from one of the waste treatments stages of bauxite residue called red mud, operated at PT. Indonesia Chemical Alumina (PT. ICA). Preliminary analysis of the sand indicates that the main element contained in the sand is iron with a percentage of up to 60% and titanium at 10%. This study aims to determine the elemental composition and mineral characteristics of sand that was separated magnetically from the iron sand. Magnetic separation was carried out in two stages, namely separation using a weak magnets and strong magnets. The separation resulted in approximately 71% of strong magnetic sand. The rest was separated using the strong magnet giving almost 70% of weak magnetic sand while the residue is non-magnetic sand. The weak magnetic sand was analyzed using XRF and XRD to determine elemental composition as well as the type of mineral contained in the material. Elemental analysis showed that the weak magnetic sand contains 66.331% of iron, 13,120% of silicone, 9.216% of aluminum and 7.040% of titanium. The XRD analysis presented that crystalline phase in the sand consists of ilmenite, hematite, goethite, quartz and rutile.

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Journal Info

Abbrev

IJoPAC

Publisher

Subject

Biochemistry, Genetics & Molecular Biology Chemistry

Description

Indonesian Journal of Pure and Applied Chemistry (IJoPAC) was first established in 2018 as a scientific journal that accommodates researchers and education practitioners to publish scientific work and research results which are the results of experiments or literature studies in the field of ...