Technology study of producing siderite and limonite pellets
Journal Title: Science Paper Online - Year 2008, Vol 3, Issue 11
Abstract
Balling and roasting of pellet with siderite and limonite is investigated in this paper. The results show that green-ball strength and shock temperature are increased when adding limonite and magnetite into siderite. It was difficult to roast this kind of ore pellet using grate-kiln, and the quality of pellet is bad. Because the time of keeping high temperature is short during sintering, the compressive strength of pellet is low. The high temperature time prolonged and the yield, tumbler strength and compressive strength increased when adding magnetite. Besides, sintering index improved when increasing preheating process. The yield is 98.26%, utilization coefficient is 0.654 t/(m2•h), tumbler strength is 80.65% and compressive strength is 1762 N per pellet when using fabric calcinations. The study supplies new method of using siderite and limonite which are abundant but difficult to be roasted.
Authors and Affiliations
Qian LI , Yongbin YANG, Tao JIANG
Keywords
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