Open AccessEffect of Thermal Treatment on Natural Dolomite
Author(s) -
S. F. A. Abdullah,
Siti Shuhadah Md Saleh,
Nur Farahiyah Mohammad,
Mohd Sobri Idris,
H. R. Saliu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2080/1/012009
Subject(s) - dolomite , magnesite , calcination , calcite , magnesium , thermal decomposition , mineralogy , mineral , materials science , fourier transform infrared spectroscopy , thermal treatment , thermal analysis , metallurgy , chemistry , nuclear chemistry , chemical engineering , thermal , catalysis , composite material , biochemistry , physics , organic chemistry , meteorology , engineering
Dolomite is a mineral material that is formed from limestone which is mostly contains the calcite (CaCO 3 ) and magnesite (MgCO 3 ). This paper aimed to study on thermal decomposition of dolomite under air atmosphere. Calcination of dolomite was carried out by using furnace with heating rate of 10 °C/minute in an air atmosphere. The different temperature of calcination was varied at 400 °C, 600 °C, 800 °C, and 1000 °C within 6 hours. Phase analysis (XRD) and functional group analysis (FTIR) were carried out to analysis the dolomite after calcination. Microstructural (SEM) and Energy Dispersive X-ray (EDX) analysis showed that the main constituents of pure dolomite include CaCO 3 (calcite), MgCO 3 (magnesite), CaO, and MgO. From the results, XRD showed that the high intensity of CaO and MgO at 800 - 1000 °C was much stronger than that of dolomite at 400 - 600 °C. In addition, FTIR presents strong and intense bands are observed at 3632.23 and 3690.98 cm −1 (800 °C), and also 3694.03 and 3633.60 cm −1 (1000 °C) due to the calcium oxide.