Some aspects of the reactivity of olivine and serpentine towards different chlorinating gas mixtures
1998; Elsevier BV; Volume: 319; Issue: 1-2 Linguagem: Inglês
10.1016/s0040-6031(98)00392-x
ISSN1872-762X
AutoresNdue Kanari, Nour‐Eddine Ménad, I. Gaballah,
Tópico(s)Geochemistry and Elemental Analysis
ResumoThe reactivity of olivine and serpentine towards Cl 2 +air, Cl 2 +N 2 and Cl 2 +CO was studied in non isothermal conditions up to 1000 °C.The same samples were also chlorinated in a horizontal experimental set during 2 hours between 500 °C and 1000 °C, under oxidizing and reducing atmospheres.The chlorination products were examined by XRD and SEM.The iron bearing compounds contained in the olivine and serpentine natural samples can be eliminated through the chlorination or the oxychlorination of these solids at temperatures lower than 900 °C.Carbochlorination of olivine and serpentine is incomplete even at 1000 °C for a reaction time of 2 h.Pure magnesium chloride can be recovered by cooling the gas phase at about 500 °C.
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