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Title of Journal: Rare Metals

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Abbravation: Rare Metals

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Nonferrous Metals Society of China

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DOI

10.1002/nadc.19740221810

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1867-7185

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Decomposition process of zircon sand concentrate w

Authors: Jiandong Zhang Lijun Wang Dongmin Jiang
Publish Date: 2012/08/09
Volume: 31, Issue: 4, Pages: 410-414
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Abstract

The decomposition process for zircon sand concentrate using mixed base of sodium hydroxide partly replaced by calcium oxide was inrestigated It is found that the decomposition rate of zircon gradually increased with the increase of the reaction temperature and time The decomposition rate is over 97 with the conditions that CaO/zircon molar ratio is 025 ∼ 075 at 800 °C for 1 h Whereas the decomposition rate decreased when the molar ratio was more than 075 Also thermogravimetrydifferential thermal analysis TGDTA and Xray diffraction XRD were used to study the reaction mechanism of zircon decomposition process with CaONaOH The results showed that Na2O which was generated by the reaction of CaO and Na4SiO4 increased the decomposition rate of zircon owing to its spread to the surface of zircon and played a role in decomposition process

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  1. Rare earth texture analysis of rectangular extruded Mg alloys and a comparison of different alloying adding ways
  2. Microstructure and superconducting properties of (BaTiO 3 , Y 2 O 3 )-doped YBCO films under different firing temperatures
  3. Microstructure of ZM6 magnesium alloy with different Nd content
  4. Influence of temperature rate on transitory internal friction during reverse martensitic transformation for Ti 50 Ni 27 Cu 23 alloy
  5. Magnetocaloric effect of (Gd 1− x Ce x )Co 2 compounds in low magnetic fields
  6. Relation between microstructure and magnetic properties of shock wave-compressed Nd–Fe–B magnets
  7. Adsorption behavior of Pd(II) from aqueous solutions by D201 resin
  8. Formation mechanism and prediction of new phases in binary metallic liquid/solid interface
  9. Microstructure and melting properties of Ag–Cu–In intermediate-temperature brazing alloys
  10. Investigation on SCC and HE of STS 304 austenitic stainless steel for offshore structures
  11. Microstructure and mechanical performances of CGHAZ for oil tank steel during high heat input welding
  12. Low-temperature synthesis of SiC nanowires with Ni catalyst
  13. Influence of Sb 2 O 3 doping on the properties of KBT-NBT-BT lead-free piezoelectric ceramics
  14. Synthesis and characterization of amorphous Al–Mg–B prepared by various deposition temperatures
  15. High temperature creep behavior and mechanism of a TiAl-based intermetallic
  16. Deformation efficiency, homogeneity, and electrical resistivity of pure copper processed by constrained groove pressing
  17. Synthesis and luminescent properties of Ln 3+ (Ln 3+ = Eu 3+ , Dy 3+ ) -doped Bi 2 ZnB 2 O 7 phosphors
  18. Electrical and optical properties of ZnO:Al films with different hydrogen contents in sputtering gas
  19. Preparation and application in electromagnetic absorption of ZnO/FeNiMo composite
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