Fundamental Research onApplying Organic Binder SHN to Ozidized Pellets
A new organic binder SHN is introduced, which is a synthetic polycomplex for replacing bentonite to produce oxidized pellets. The results of laboratory experiments showed that SHN could fit almost a lot of concentrate, such as magnetite, hematite and so on, which came from several pellets plants. It was found that 0.04%-0.06% SHN could replace 2%-3% bentonite. For pellets prepared by SHN, the wet drop strength was more than 4.7 times/P, the wet compressive strength more than 11.5N per pellet, the shock temperature larger than 500 ℃, the compressive strength of preheated pellets more than 450 N per pellet and the compressive strength of fired pellets surpassed 2400 N per pellet. Based on the results of laboratory research, the industrial experiment of applying SHN was carried out in ChengChao pellet plant, which was studied by single-disc balling experiment, preheating experiment of casting cages and the systemic experiment of replacing bentonite completely. The results of industrial experiments showed that the suitable dosage of SHN is 0.048-0.06%, and pellets were prepared and their wet drop strength was more than 3.6 times/P, the compressive strength of preheated pellets ranged from 378 to 559 N per pellet, and the compressive strength of fired pellets was in the range of 2800-3000 N per pellet. If SHN replaces bentonite to prepare pellets, the grade of iron in pellets can be heightened by 1.0-1.8%, and the qualities of pellets will be improved.
organic binder SHN bentonite ozidized pellet
GAN Min FAN Xiao-hui ZHANG Zhen-hui ZHOU Xiao-jun WANG Yong-qing YU He-jia
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, KeFa New Material Limited Company, Pingxiang 337200, Jiangxi, China ChenChao Pellets Plant, Ezhou 436000, Hubei, China
国际会议
The 5th International Congress on the Science and Technology of Ironmaking(第五届国际炼铁科技大会 ICSTI09)
上海
英文
330-334
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）