钢渣缓释肥中矿质元素释放特性研究

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1、AbstractInordertoreducetheenvironmentalpollutionofandenhancetheslagofslag，itcouldbemade鹄ancomprehensiveusageenvironmentallyfriendlyresource，withtheslag·fertilizers弱thematerials，thedissolutionrateinwaterandreleasecharacteristicsofmineralelementsinsoilwerestudiedinthisarticle．Asimulatedexper

2、imentwithfourdifferentenvironmentalfactors(temperature，texture，rainfallanddifferentsoil)wascarriedouttostudytheeffectofthosefactorsonreleasecharacteristicsofmineralelementsinslag—fertilizer；andreleaSemechanismswereresearchedESEM．Mainresultswereasfollows：by1．Themineralelementsdissolutionreg

3、ularityofslag—fertilizersWaStestedbythemethodof也edissolutionrateinWater．ResultsindicatedthatthedissolutionrateofKWashigherthanthatofotherelements．andpreliminarydissolutionrateofKweremorethan10％．Mostelements’accumulateddissolutionamountofNo．5slag-fertilizerwerehigherthanthatofotherslag-fert

4、ilizers，especiallyKit’SaccumulatedamountWaS82．46％：theaccumulatedamountofPinNo．1slag—fertilizerWaSatmost，upto33．19％，andthatofCrandCuinNo．2slag—fertilizerandMoinNo．4slag·fertilizerwereatmost，upto13．19％、35．99％and38．17％；andthatofallelementsinNo．3slag-fertilizerwerelowerthanthatofelementsinothe

5、rfertilizers．2．、MththeNo．5slag-fertilizeraSthematerial．theeffectofdifferentenvironmentalfactorsonmineralelementsreleaSecharacteristicsWaScarriedoutbythemethodofsoilcolumnleaching．刀够resultsshowedthatMg，A1，K，Zn，Cd，Cu，Pb，Mn、Fe，P，Cr，Ca，MoandAsshoweddifferentaccumulateddissolutionofreleaSeunder

6、thedifferentenvironmentalfactors．Inthesoil，asthesoilregularitytemperatureincreased，theaccumulatedleachingamountofPandCrdecreaSed，however,theaccumulatedleachingamountofPbincreased；insoilplusfertilizer,onlytheelementofPshowedthesameregularityasPinthesoil．Themostandleastoftheaccumulatedlcachi

7、ngamountwereCa，93．81‰andFe，0．013‰。Underthedifferentrainfall，theaccumulatedleachingamountofAl、P、K、Mn、ZnandMointhesoilincreased。asA1，P，K，MnandFeinthesoilplusfertilizer,whentherainfallincreased；themostandleaStoftheaccumulatedleachingamountwereCa，93．81‰：AlandCr，0．