In this paper, a study of processing pyrite cinder and metallurgical slag using a 'one step' technology in strand grate-rotary kiln at a laboratory scale is presented, which aims to recover iron, lead, zinc and copper. The compressive strength of preheated pellets reached 527 N per pellet and the removal rates of copper, lead and zinc reached 36?36, 92?86 and 20?0% respectively, when the green balls were preheated at 1125uC for 10 min. Reduction of preheated pellets was followed, at the carbon/iron ratio of 3?0 and 1100uC, for the reduction time of 70 min, and the metallisation degree of 86?31%, the compressive strength of 1777 N per pellet and the copper, lead and zinc removal rates of 36?36, 99?12 and 71?00% were achieved respectively. These prereduced pellets with 80?58%Fe made from pyrite cinder and metallurgical slag can be widely applied to enhance the operation of blast furnace.
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