简介:Micro-poredCA6-MAlightweightmaterialwithCA6:MAmassratioof7:3waspreparedusingAl(OH)3.MgCO3andCaCO3asstartingmaterials,andanthracite.sweetpotatostarchandanthracite+sweetpotatostarchasporeformingagent(PFA)withanadditionof10mass%.20mass%and30mass%.respectively.Thestartingmaterialsweredrymixed.wetco-milledinaballmillfor1h.slipcastintocylindricalspecimenswithadiameterof60mm.andthencalcinedat1450℃for3h.WiththeincreaseofPFAaddition.apparentporosityincreases,andbulkdensitydecreases.TheinfluenceofdifferentPFAsonpropertiesofthemicro-poredLWCA6-MAaggregatewasinvestigated.TheachievedCA6-MA.byadding30%sweetpotatostarch.hasaporosityof76.8%.bulkdensityof0.78g·cm-3andmedianporesizeof1.90μm.
简介:2004年1月19日,国务院总理温家宝日前签署第397号国务院令,颁布《安全生产许可证条例》,新华社19日受权播发了这个条例。