不同配比下PMC矿粉和司家营矿粉造球工艺试验研究
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摘要
为了确定PMC矿粉和司家营矿粉两种矿粉造球的最佳配比,利用实验室的球团设备对两种矿粉在不同配比下的球团工艺进行了试验研究.研究发现,在PMC矿粉∶司家营矿粉=8∶2的配比下,生球的成球率为91%,落下强度为4.15次/0.5 m个,抗压强度为0.825 d N,爆裂温度为440℃;成品球团的抗压强度接近300 d N,并且通过对PMC矿粉∶司家营矿粉=8∶2时成品球团矿的显微结构的观察发现,此配比下的球团矿矿相以赤铁矿为主,晶粒分布密集且联结成片,成品球团矿的抗压强度最高.因此,PMC矿粉:司家营矿粉=8∶2时为最优方案.
In order to get the best proportion of PMC( Palabora Mining Co.) ore mineral powders and Sijiaying mineral powders for pelletizing,investigation was conducted on pelletizing with the two kinds of mineral powders. The results show that,the rate of ball production is 91%,drop strength is 4. 15 times /0. 5 m per ball,the compressive strength of green ball is 0. 825 d N,explosion temperature is 440 ℃ and the compressive strength of roasted ball is about 300 d N,under the ratio of PMC∶ Sijiaying = 8 ∶ 2,which can meet the production requirements. Besides,through the observation of its microstructure,it shows that under the ratio of PMC ∶Sijiaying = 8 ∶ 2,the main mineral phase of roasted ball is hematite pellet,state of which is intensive and connecting into piece,so the compressive strength is the highest,hence the ratio of PMC∶ Sijiaying = 8∶ 2 is the best ratio to pelletize with the two kinds of mineral powders.
In order to get the best proportion of PMC( Palabora Mining Co.) ore mineral powders and Sijiaying mineral powders for pelletizing,investigation was conducted on pelletizing with the two kinds of mineral powders. The results show that,the rate of ball production is 91%,drop strength is 4. 15 times /0. 5 m per ball,the compressive strength of green ball is 0. 825 d N,explosion temperature is 440 ℃ and the compressive strength of roasted ball is about 300 d N,under the ratio of PMC∶ Sijiaying = 8 ∶ 2,which can meet the production requirements. Besides,through the observation of its microstructure,it shows that under the ratio of PMC ∶Sijiaying = 8 ∶ 2,the main mineral phase of roasted ball is hematite pellet,state of which is intensive and connecting into piece,so the compressive strength is the highest,hence the ratio of PMC∶ Sijiaying = 8∶ 2 is the best ratio to pelletize with the two kinds of mineral powders.
引文
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[2]刘曙光.冀东铁精矿粉造球、氧化及焙烧机理的研究[D].唐山:河北理工大学冶金与能源学院,2006.LIU Shuguang.Study on pelletizing,oxidizing and roasting performance of ji dong iron concentrate[D].Tangshan:School of Metallurgy and Energy Resources of Hebei Polytechnic University,2006.
[3]亢立明,李福民,刘曙光,等.冀东铁精矿的物化性能测试[J].岩矿测试,2007,26(3):201-204.KANG Liming,LI Fumin,LIU Shuguang,et al.Testing on physical and chemical properties of jidong magnetite concentrate[J].Rock and Mineral Analysis,2007,26(3):201-204.
[4]刘朝卿,刘然,吕庆,等.冀东磁铁精粉球团矿的矿相结构研究[J].钢铁钒钛,2014,35(6):124-125.LIU Chaoqing,LIU Ran,LU Qing,et al.Study on mineralogical structure of jidong magnetite pellets[J].Iron Steel Vanadium Titanium,2014,35(6):124-125.
[5]王筱留.钢铁冶金学(炼铁部分)[M].北京:冶金工业出版社,2012:56.WANG Xiaoliu.Iron and steel metallurgy(Parts of Ironmaking)[M].Beijing:Metallurgical industry press,2012:56.
[6]SHI Yan,LIU Shimeng,HU Changqing,et al.Microstructure variation of pellets containing ferrous dust during carbonation consolidation[J].Journal of Iron and Steel Research(International),2015,22(2):128
[7]TUGRUL N,DERUN E M,PISKIN M.Effects of calcium hydroxide and calcium chloride addition to bentonite in iron ore pelletization[J].Waste Magnage&Research,2006,24:446-455.
[8]FAN Jianjun,QIU Guanzhou,JIANG Tao,et al.Roasting properties of pellets with iron concentrate of complex mineral composition[J].Journal of Iron and Steel Research(International),2011,18(7):01-07.
[9]吕庆,亢立明,孙丽芬,等.冀东磁铁矿球团的氧化机理[J].钢铁研究学报,2007,19(8):7-9.LU Qing,KANG Liming,SUN Lifen,et al.Oxidation mechanism of jidong magnetite pellets[J].Journal of Iron and Steel Research,2007,19(8):7-9.
[10]青格勒,吴铿,屈俊杰,等.不同含镁添加剂对球团矿工艺参数及质量的影响[J].钢铁,2013,48(7):17-19.QING Gele,WU Keng,QU Junjie,et al.Effect of different magnesium additives on process parameters and pellet quality[J].Iron and Steel,2013,48(7):17-19.
[11]奥尔森S E,马尔尼斯T.铁矿石矿物学与球团矿结构[C]//第五届国际造块会议论文选.北京:冶金工业出版社,1991:2-4.OLSON S E,MARR NICE T.Iron ore mineralogy and pellets structure[C]//Papers of the Fifth International Conference on briquetting.Beijing:Metallurgical industry press,1991:2-4.
[12]LI GH,LI XQ,ZHANG B,et al.Induration mechanisms of oxidised pellets prepared from mixed magnetite-haematite concentrates[J].Ironmaking and Steelmaking,2009,36(5):393-395.
[13]陈耀明,李建.氧化球团中Fe2O3的结晶规律[J].中南大学学报(自然科学版),2007,38(1):70-73.CHEN Yaoming,LI Jian.Cyrstal rule of Fe2O3in oxidized Pellet[J].J.Cent.South Univ.(Science and Technology),2007,38(1):70-73.
[14]陈耀明,张元波.氧化球团矿结晶规律的研究[J].钢铁研究,2005(3):10-12.CHEN Yaoming,ZHANG Yuanbo.Study on crystallization rule of oxidized pellet[J].Research on Iron&Steel,2005(3):10-12.
[15]武志杰.包钢球团矿铁料的合理配置及变碱度的试验研究[D].包头:内蒙古科技大学,2012.WU Zhijie.Study on iron material rationally and different basicity in pellets of baotou steel[D].Baotou:Inner Mongolia University of Science and Technology,2012.