Analysis on Dust Accretion and SO3 Formation in Flash Smelting Furnace Waste Heat Boiler
  
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DOI:doi:10.3969/j.issn.1007-7545.年份.期号.顺序号
KeyWord:Copper metallurgy,Flash furnace,Flash smelting,Waste heat boiler,Dust,SO 3 generation ratio
ZHOU Jun
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Abstract:
      Dust sulfation reaction, degree of which determines dust accretion state in boiler, and SO 3 formation in off-gas from copper flash furnace take place mostly in waste heat boiler. From the point of view of chemical equilibrium, dust catalyzing role on SO 3 formation, gas residence time in boiler, and etc., the effecting factors on dust sulfation and SO 3 formation are analyzed combined with plant practice of Jinlong's waste heat boiler. Furthermore, factors resulting in serious dust accretion and increasing SO 3 generation in boiler are discussed, countermeasures alleviating dust accretion and lowering SO 3 generation in boiler are suggested
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