中南大学学报（自然科学版）2011，Vol.42Issue(2)：279-286,8.
有机复合膨润土强化磁铁矿氧化球团机理及应用
Improving pelletization of magnetite concentrate by organic complex bentonite and its industrial application
摘要
Abstract
Based on insertion of small organic molecular into crystal layers of activated bentonite by sodium carbonate,an organic complex bentonite was developed. The mechanism of chemisorptions and compound molecule bridged linkage by organic complex bentonite to improve the pelletization of iron ore concentrates was demonstrated by the determination of X-my diffraction, surface potential, wetting heat differential scanning calorimetry (DSC) and ballability index. The results show that the drop number and thermal shock temperature of green balls are increased by 0.9 times from 0.5 m height and 150 ℃, respectively, while the dosage of bentonite is decreased by over 50％ from ordinary 3.0％ to 1.4％,leading to an increase in iron grade of fired pellet by 1.02％ and in compressive strength by 1 kN per pellet. In the meantime, the bentonite dosage is decreased and the thermal shock resistance of green balls, the strength of pellets and the iron grade of fired pellets are improved.关键词
膨润土/有机复合膨润土/铁矿氧化球团分类
矿业与冶金引用本文复制引用
朱德庆,熊守安,潘建,周仙霖..有机复合膨润土强化磁铁矿氧化球团机理及应用[J].中南大学学报（自然科学版）,2011,42(2):279-286,8.基金项目
高校青年教师教学科研奖励基金资助项目(教人司2000[26]) （教人司2000[26]）
有机复合膨润土产业化技术项目(国科发计[2009]190号) （国科发计[2009]190号）
