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物理化学学报 2006
焙烧硼钠钙石在高固液比氯化铵溶液中的溶解动力学Keywords: ulexite,dissolutionkinetics,highsolid-to-liquidratios,ammoniumchloride Abstract: thedissolutionkineticsofcalcinedulexiteinammoniumchloridesolutionsathighsolid-to-liquidratioswereinvestigated.intheexperiments,calcinationtemperature,solutionconcentration,reactiontemperature,andpre-hydrationwerechosenasparameters.itwasobservedthatthedissolutionrateincreasedwithincreasingcalcinationtemperature,solutionconcentration,andreactiontemperature,whereasitwasnotaffectedbypre-hydration.employinggraphicalandstatisticmethods,thedissolutionrate,basedonhomogeneousreactionmodel,canbegivenas:(1？x(b2o3))？1？1=k(c(nh4cl))1.982t.theactivationenergyforthedissolutionoftheulexitesamplecalcinedat160℃wasfoundtobe84.04kj？mol？1.
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