The Formation of Sodium Stannate from Mineral Cassiterite by the Alkaline Decomposition Process with Sodium Carbonate (Na2CO3)

L. Andriyah, L. H. Lalasari, Azwar Manaf

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

Extraction of cassiterite using alkaline decomposition of sodium carbonate (Na2CO3) has been studied. Cassiterite (SnO2) is a mineral ore that contains tin (Sn) about 57.82 wt% and impurities like quartz, ilmenite, monazite, rutile and zircon. The initial step for the process was to remove the impurities in cassiterite through washing and separation by a high magnetic separator (HTS). The aim of this research is to increase the added value of cassiterite from local area Indonesia that using alkaline decomposition to form sodium stannate (Na2SnO3). The result shows that cassiterite from Indonesia can form sodium stannate (Na2SnO3) which soluble with water in the leaching process. The longer the time for decomposition, the more phases of sodium stannate that will be formed. Optimum result reached when the decomposition process was done in 850 °C for 4 hours with a mole ratio Na2CO3 to cassiterite 3:2. High Score Plus (HSP) was used in this research to analyze the mass of sodium stannate (Na2SnO3). HSP analysis showed that mass of sodium stannate (Na2SnO3) is 70.3 wt%.

Original languageEnglish
Article number012037
JournalIOP Conference Series: Materials Science and Engineering
Volume176
Issue number1
DOIs
Publication statusPublished - 8 Mar 2017
Event1st International Conference on Advanced Material for Better Future, ICAMBF 2016 - Surakarta, Indonesia
Duration: 3 Oct 20164 Oct 2016

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