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Influence of pellet preheating system on pellet strength
Author(s): 
Pages: 1-4
Year: Issue:  6
Journal: Research on Iron and Steel

Keyword:  magnetite concentrateorthogonal testpreheating system;
Abstract: Pelletizing experiments were carried out by using magnetite concentrate as raw material and adding appropriate proportion of bentonite and limestone for pelletizing.Through orthogonal test,effects of preheating temperature,preheating time and preheating air volume on the strength of preheated pellet were analyzed.Results show that the influence degree order of each factor on preheated pellet strength is in turn preheating temperature,preheating time,preheating air volume.The effect trend of the three factors on preheated pellet strength is basically consistent and its main features are as follow:with the increase of preheating temperature,preheating time and preheating air volume,preheated pellet strength increases.Considering industrial application,the ideal pellet preheating system is 1 000 ℃ of preheating temperature,7.5 minutes of preheating time and 18m3/h of preheating air volume.
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