Obtaining Electroheating Elements Based on Products of Carbothermal Reduction of Fe2O3 by Waste Activated Sludge (WAS)
Waste and biomass valorization(2022)
摘要
In this work, the prospects of fabrication of heating elements from heat-treated (sintered) mixtures of waste-activated sludge (WAS) and Fe 2 O 3 under oxygen deficiency conditions are considered. During heat treatment of mixtures in the 800–900 °C temperature interval, Fe 2 O 3 reduces to Fe 3 O 4 , Fe 0.94 O, and Fe. A heat treatment at 1000 °C leads mainly to the formation of amorphous iron doped with carbon, silicon, and aluminum. Based on these compacted mixtures, having different electrical resistivity (from ~ 10 –4 up to 10 –1 Ω·m), it is possible to fabricate heating elements, whose working temperature ranges from ~ 100 °C up to 600 °C. Graphical Abstract
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关键词
WAS,Fe2O3,Reduction,Heating elements
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