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Fundamental research on applying organic binder SHN to oxidized 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 11.5 N per pellet, the shock temperature larger than 500 deg C, 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.
Fundamental research on applying organic binder SHN to oxidized 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 11.5 N per pellet, the shock temperature larger than 500 deg C, 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.
Fundamental research on applying organic binder SHN to oxidized pellets
Grundlagenuntersuchung zur Verwendung des organischen Bindemittels SHN für oxidierte Erzpellets
Gan, Min (author) / Fan, Xiao-hui (author) / Zhang, Zhen-hui (author) / Zhou, Xiao-Jun (author) / Wang, Yong-qing (author) / Yu, He-jia (author)
2009
5 Seiten, 1 Bild, 5 Tabellen, 6 Quellen
Conference paper
English
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