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本文主要论述攀枝花钛磁铁精矿球团焙烧固结过程与生球氧化的关系。研究工作是在φ300×900毫米间歇式回转窑中进行的。试验研究表明:攀枝花铁精矿球团的氧化与球团高温焙烧固结机理有着密切的关系。生球氧化不充分,由于球核未氧化的磁铁矿的再结晶,与球团表层氧化生成的赤铁矿再结晶的不同结构产生环状同心裂纹,使球团的抗压强度低于100公斤/个。保证生球完全氧化,然后靠着赤铁矿在高温条件下(1250～1280℃)的再结
This article mainly discusses Panzhihua titanium magnetite pellet roasting consolidation process and the relationship between the ball oxidation. The research work was carried out in a φ300 × 900 mm batch rotary kiln. Experimental studies show that: Panzhihua iron concentrate pellets oxidation and pellet roasting and consolidation mechanism has a close relationship. Oxidation of green ball is insufficient. Due to the recrystallization of the unoxidized magnetite of the nucleus, different structures recrystallized from the hematite formed on the surface of the pellet generate annular concentric cracks, and the compressive strength of the pellet is lower than 100 Kg / month Ensure that the green ball is fully oxidized, and then rely on the reheating of hematite at high temperature (1250 ~ 1280 ℃)