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1.Feldspar FELDSPARcomprisesagroupofmineralscontainingpotassium,sodium,calciumandaluminiumsilicates.Theyarethemostcommonrock-formingminerals. Name Formula SiO2 Al2O3 K2O Na2O CaO BaO SpecificDensity Hardness Type Color Potassium Feldspar K2O·Al2O3·6SiO2 70 16 9 42.56 6 orthoclase White,pink,milkywhite Sodiumfeldspar Na2O·Al2O3·6SiO2 63-70 16-20 ≤1 ≥82.60 6 albite White,blue,gray,no-color 2.Applications Feldsparusedasrawmaterialofglassindustry(50-60%totalconsumption)andceramicindustry(30%totalconsumption),besides,itiswidelyusedinchemicalprocessing,abrasivetools,glassfiberandweldingrodindustries. Field Application Qualityrequirement GlassandGlassmakingproducts Feldsparasrawmaterialofflatglassandkindsofglassmakeproducts,itcandecreasetheglassmeltingpoint,reducetheuseofcalcinedsoda.Sodiumfeldsparasrawmaterialofglassfibercanimprovethefiberqualityandassubstituteofpyrophillite. Al2O318% Fe2O30.6% Na2O+K2O10% Ceramicindustry Feldsparasblankmaterialintheproductionofceramic,enamel,electrotechnicalporcelainproducts(20-40%addition)andasrawmaterialtoglaze(20-70%addition) Fe2O30.3-1.0% Cementindustry Asoneofrawmaterialtoproducingwhitecement ChemicalProcessing Crushedfeldsparcanbeusedasfillingmaterialtolatex,painting,carbamicacid,aceticacid,propyleneorlikeproducts. Asfiller,biggercontentoffreequartzispreferred;asfillertocosmeticpowder,2-8umalkalifeldsparisrequired. Abrasives Powderedfeldsparcanbeusedinabrasiveindustry. Otherfileds wideapplicationsarefoundinpapermaking,refractoryproduct,machinemanufacturing,painting,weldingrodetcthatfeldparisusedasfiller. 3.Sizes 32mesh,40mesh,60mesh,100mesh,200mesh,325mesh,400mesh,600mesh,800mesh,1250meshetcothersizesareavailableuponrequest.