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- W2389819152 abstract "Fly ashes from municipal solid waste incinerator are melted using a small-scale furnace. Effects of the behavior of several heavy metals fixation and volatilization have been systematically studied. The microstructures of samples are analyzed by scanning electron microscope. Experimental results show that the fixation proportions of chromium, nickel, copper and arsenic would increase with the elevation of their melting and boiling points under oxidizing atmosphere. The proportions of fixation is in sequence of chromiumnickelcopperarsenic. Heavy metals having low melting and boiling, such as lead, cadmium and mercury, are easily volatized during melting process. The volatilization rate of zinc is very low due to easily forming the nonvolatile compounds, like Zn2SiO4, ZnSiO3, and ZnAl2O4. The reducing atmosphere would be propitious to enhancing the fixation rates of chromium, nickel, copper and arsenic. It is confirmed that mercury, cadmium, and zinc are more easily vaporized under reducing atmosphere. While the volatilization rate of lead would be inhibited at the same condition. The volatilization rate of lead is less than 50 % at 1100 to 1400 ℃. Samples under reducing condition are superior in melted effects to that oxidizing condition. The volatilization of low-boiling heavy metals under the reducing atmosphere is larger that the oxidizing atmosphere. Samples molten become full smooth and much compact in structure, while the molten samples have no apertures on the apparent section." @default.
- W2389819152 created "2016-06-24" @default.
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- W2389819152 date "2006-01-01" @default.
- W2389819152 modified "2023-09-23" @default.
- W2389819152 title "Influence of Atmospheres on Behavior of Heavy Metals During Melting Process of Fly Ashes from Municipal Solid Waste Incinerator" @default.
- W2389819152 hasPublicationYear "2006" @default.
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