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- W2393060497 abstract "This paper describes the characteristicsof natural dusts,artificial dusts and industrial dustsin such aspects as mineral phases,chemical components,morphology and sizes.Quartz,calcite,albite and sericite constitute the main phases of natural dusts and industrial dusts with high SiO2,CaO and low K2O,Na2O in chemical composition.The fine particles are mainly in the range of 0.3 to 5μm,of which the dustsof sizes less than 2μm are over 85%.SEM observations show that the dusts are mainly irregular in shape,and the surface is rough. The dissolution and electrochemical action of dustsin valine acid liquor at the simulated human body temperature(37℃) in 32 hours were investigated.pH and electric conductivity values of these different dusts varied somewhat differently,and increased rapidly in the first 4 hoursgenerally,and chemical reaction reached the equilibrium in 8 hours.Before and after the reaction,the pH values of the solution changed insignificantly;valine had larger buffer function on powder.The total amountsof dissolved ionsof K,Ca,Na,Mg were in the range of 31～331 mg/L,with the amount of Ca dissolved ions being the highest,reaching 15 to 255 mg/L,followed by K,Mg,Na.The total amountsof dissolved ionsof Fe,Zn,Mn,Pb,Ba,Cr,Ni,V were in the range of 3.06～20.60 mg/Land those of Al,Si were 1.12～22.8 mg/L.Each element was dissolved relatively rapidly in the first 8 hours.The relative solubility of dusts in valine acid was in order of wollastoniteserpentinesepiolite; the cement plantindustrial dustsnatural dustspower plantindustrial dusts.The wollastonite and power plant industrial dusts,which have high content of CaO,showed highest solubility,suggesting a poorer corrosionresisting capability and lower bio-resistibility.Sepiolite and cement plant industrial dusts,which have high content of SiO2,showed lowest solubility,suggesting a higher corrosion-resisting capability and stronger bioresistibility." @default.
- W2393060497 created "2016-06-24" @default.
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- W2393060497 date "2013-01-01" @default.
- W2393060497 modified "2023-09-23" @default.
- W2393060497 title "The dissolution of natural dusts and artificial dusts in valine acid" @default.
- W2393060497 hasPublicationYear "2013" @default.
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