Characterization of a Mineral Synthesized by Availing Silica from Plant Source-中国期刊网

摘要 Ricehuskwasusedtopreparethesilicaofamorphousnaturebeingseveraltimesmorereactivethanthatobtainedfromthemineralkingdom.Numberofricehuskbatcheswerepyroprocessedundervaryingtime-temperatureparametersforthispurpose.Theashresultingfromabatchpyroprocessedat500℃for8hcontained92.01%silica.Itwasupgradedto98.50%byapplyingphysicochemicalpurificationprocedures.Themineral,wollastonite(CaSiO3),wassynthesizedfromthuspreparedsilicaandlimestonecontaining55.91%CaO.Solidstatereaction,betweenCaOandSiO2wasattemptedatdifferenttemperaturesinthepresenceofamineralizer.Thesinteringtemperature,foraffectingthesaidsynthesis,wasrangedbetween900℃to1300℃withthestepsof100℃.SpecificchemicalanalysistechniqueswereappliedtodeterminetheeffectivenessofcarriedoutreactionandpromisingbatchesweresubsequentlysubjectedtoXRDinvestigations.Theproducedmineralwasalsocharacterizedregardingitsphysicalpropertieslike:colour,hardness,meltingpointandspecificgravity.Percentyieldoftheproducedwollastonitewasalsoestimatedandcomparedwiththatofobtainedbyotherresearcherswhosynthesizeditbyusingsilicafrommineralkingdom.Batchessinteredat1200℃and1300℃for1hshowedtheoverallbestresults.

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Characterization of a Mineral Synthesized by Availing Silica from Plant Source

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Characterization of a Mineral Synthesized by Availing Silica from Plant Source

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