Analysis of Phase Composition of Magnesite Clinker from Calcinated Brucite by X-ray Diffraction

Gang CHU; Xiao-guang JIANG; Zhong LIN; Wei-gang LI

Rock and Mineral Analysis > 2010 > 29(6): 707-710.

Gang CHU, Xiao-guang JIANG, Zhong LIN, Wei-gang LI. Analysis of Phase Composition of Magnesite Clinker from Calcinated Brucite by X-ray Diffraction[J]. Rock and Mineral Analysis, 2010, 29(6): 707-710.

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Analysis of Phase Composition of Magnesite Clinker from Calcinated Brucite by X-ray Diffraction

1.
School of Chemistry and Material Science, Liaoning Shihua University, Fushun 113001, China
2.
Bayuquan Entry-Exit Inspection and Quarantine Bureau, Yingkou 115007, China

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Received Date: February 23, 2010
Accepted Date: June 23, 2010
Published Date: November 30, 2010

Abstract

ABSTRACT

The X-ray diffraction (XRD) has been used to analyze phase composition of magnesite clinker from calcinated brucite with different process conditions. The major phase of raw brucite powder is Mg(OH)₂ with content up to 85.9% and major impurities are Mg₃Si₂(OH)₄O₅, CaCO₃ and CaMg(CO₃)₂. Most of Mg(OH)₂ are decomposed into MgO under light calcined condition (700~1000℃) during the calcination at low temperature and about 12.3% of un-decomposed Mg(OH)₂ forms new phase of Mg₂SiO₄. Mg(OH)₂ in brucite is completely decomposed into MgO under dead-burned condition (1400~1800℃) and the impurities are Mg₂SiO₄ and CaCO₃ with total content of 18.5%. The results provide the guidance for reforming purification process and improving the quality of magnesite clinker.
- calcinated brucite,
- magnesite clinker,
- X-ray diffraction,
- phase analysis

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References (15)

References

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