Title: Numerical simulation of the influence of temperature and sulfate solutionon on the solubility of feldspar
Abstract: In order to study the influence of the temperature and sulfate solution on the solubility of feldspar,the solubilities of albite,potash feldspar and anorthite at different temperatures and in different concentrations of MgSO4 and Na2SO4 solutions were numerically simulated by PHREEQC software which was developed by USGS under no CO2 partial pressure(CO2partial pressure at 0 MPa) and open state(CO2 partial pressure at 10-4.5 MPa).The results show that solubilities of albite,potash feldspar and anorthite increase with the increasing of temperature in water.At 25 ℃ and in non-CO2 differential pressure situation,the solubilities of the three kinds of feldspar decrease with the increases of Na2SO4 and MgSO4 concentration.In the presence of CO2 pressure,the solubility of feldspar increases with the increase of temperature in the same sulfate solutions.Potash feldspar and anorthite corrosions are more severe than that of albite in Na2SO4 solution.The influence of temperature on the solubility of feldspar is more important than that of sulfate solution.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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