润磨对人工磁铁精矿球团性能的影响

doi:10.13228/j.boyuan.issn0449-749x.20170216

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摘要人工磁铁矿具有不完整的晶体结构，矿石内部组织结构的不均匀程度较高，对其表面活性、比表面积等有不同程度影响，而这些因素对人工磁铁精矿球团性能具有决定性影响。以酒钢人工磁铁精矿和福建人工磁铁精矿为试验原料，造球前分别对其润磨预处理，探索润磨预处理对人工磁铁矿的表面性质、成球性能和焙烧球性能的影响。研究表明，经润磨预处理后，人工磁铁精矿粒度分布更为合理，表面形貌发生变化，比表面积和表面活性显著提高，成球性得到改善，生球落下强度和抗压强度均较高，而膨润土用量较低，但是生球爆裂温度有所下降。润磨预处理使生球中颗粒堆积得更加紧密，减少了球团内部孔隙度，增大了接触面积，同时矿物颗粒表面不规则程度增加，固相扩散反应更容易进行，可以有效提高人工磁铁精矿球团焙烧后的抗压强度，在不影响焙烧球团抗压强度的前提下降低焙烧温度、缩短焙烧时间，降低球团生产总能耗，达到为企业节能降耗的目的。

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	刘承鑫
	余俊杰
	张泽强
	张汉泉

关键词 ：人工磁铁矿，表面性质，润磨，成球性，焙烧

Abstract：Artificial magnetite has incomplete crystal structure， and the internal structure of ore has a high degree of nonuniformity， which has different effects on its surface activity and specific surface area. These factors have a decisive influence on the performance of the artificial magnetite concentrate. The effect of damp milling on artificial magnetite pellets is explored. Damp milling technology is one of the most effective operations on improving pellet’s quality. To research the effect of damp milling on surface properties of artificial magnetite concentrate， pelletizing ability and properties of roasting pellets， with artificial magnetite concentrate from Fujian and Jiuquan as the raw material， a series of pelletizing tests were performed on the pretreated materials. The results show that size distribution of artificial magnetite particle is more reasonable for balling， surface morphology is changed， the specific surface area and surface activity are improved significantly， pelletizing ability are ameliorated， the drop strength and compressive strength are increased， the dosage of bentonite is decreased， but the shock temperature is dropping. As the particles accumulate more closely in the ball， the porosity of the pellets is reduced and the contact area of the particles is increased. At the same time， the surface irregularity of mineral particles increases， which not only makes the solid-phase diffusion reaction easier and can effectively improve the compressive strength of the artificial magnetite concentrate after roasting， but also reduces the roasting temperature and the calcination time without affecting the strength of the fired ball. This method will reduce the total energy consumption for enterprises.

收稿日期: 2017-05-08 出版日期: 2018-02-05

PACS:

TF046.6

引用本文:

刘承鑫，余俊杰，张泽强，张汉泉. 润磨对人工磁铁精矿球团性能的影响[J]. , 2018, 53(1): 17-23. LIU Cheng-xin，YU Jun-jie，ZHANG Ze-qiang，ZHANG Han-quan. Influence of damp milling on properties of artificial magnetite pellets. Iron and Steel, 2018, 53(1): 17-23.

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[1]	Nasr M I, Youssef M A.Optimization of magnetizing reduction and magnetic separation of iron ores by experimental design[J].ISIJ International, 1996, 36(6):631-639
[1]	Nasr M I, Youssef M A.Optimization of magnetizing reduction and magnetic separation of iron ores by experimental design[J].ISIJ International, 1996, 36(6):631-639
[2]	Feilmayr Christoph, Thurnhofer Albin, Winter Franz, et al.Reduction behavior of hematite to magntite under fluidizedbed conditions[J].ISIJ International, 2004, 44(7):1125-1133
[2]	Feilmayr Christoph, Thurnhofer Albin, Winter Franz, et al.Reduction behavior of hematite to magntite under fluidizedbed conditions[J].ISIJ International, 2004, 44(7):1125-1133
[3]	黄柱成，李骞，杨永斌，等.混合料润磨预处理对氧化球团矿质量的影响[J].中南大学学报自然科学版, 2004, 35(5):753-758
[3]	黄柱成，李骞，杨永斌，等.混合料润磨预处理对氧化球团矿质量的影响[J].中南大学学报自然科学版, 2004, 35(5):753-758
[4]	徐佳鑫，杨大兵.润磨过程对程潮铁矿成球过程影响的研究[J].矿冶工程, 2014, 12(2):27-31
[4]	徐佳鑫，杨大兵.润磨过程对程潮铁矿成球过程影响的研究[J].矿冶工程, 2014, 12(2):27-31
[5]	白国华，周晓青，范晓慧，等.润磨强化硫酸渣制备氧化球团的技术及机理[J].中南大学学报自然科学版, 2011, 42(6):1509-1515
[5]	白国华，周晓青，范晓慧，等.润磨强化硫酸渣制备氧化球团的技术及机理[J].中南大学学报自然科学版, 2011, 42(6):1509-1515
[6]	周晓青.润磨强化硫酸渣制备氧化球团的技术及机理研究[D]. 长沙：中南大学，2009.
[6]	周晓青.润磨强化硫酸渣制备氧化球团的技术及机理研究[D]. 长沙：中南大学，2009.
[7]	Feng Chen, Yu-feng Guo, Tao Jiang, et al.Effects of high pressure roller grinding on size distribution of vanadiumtitanium magnetite concentrate particles and improvement of green pellet strength[J].Journal of Iron and Steel Research , International, 2017, 24(2):266-272
[7]	Feng Chen, Yu-feng Guo, Tao Jiang, et al.Effects of high pressure roller grinding on size distribution of vanadiumtitanium magnetite concentrate particles and improvement of green pellet strength[J].Journal of Iron and Steel Research , International, 2017, 24(2):266-272
[8]	张汉泉，汪凤玲.赤褐铁矿磁化焙烧矿物组成和物相变化规律[J].钢铁研究学报, 2014, 26(7):8-11
[8]	张汉泉，汪凤玲.赤褐铁矿磁化焙烧矿物组成和物相变化规律[J].钢铁研究学报, 2014, 26(7):8-11
[9]	胡志清，潘建，朱德庆等.铁精矿原料特性及其对成球性能的影响[J].烧结球团, 2013, 38(4):42-49
[9]	胡志清，潘建，朱德庆等.铁精矿原料特性及其对成球性能的影响[J].烧结球团, 2013, 38(4):42-49
[10]	崔建辉, 刘金长.酒钢选矿工艺流程优化探讨[J].矿冶工程, 2012, 32(1):57-
[10]	崔建辉, 刘金长.酒钢选矿工艺流程优化探讨[J].矿冶工程, 2012, 32(1):57-
[11]	张玉玲, 李广文.酒钢选矿铁精矿及入选原料关系及标准[J].甘肃冶金, 2015, 37(6):6-
[11]	张玉玲, 李广文.酒钢选矿铁精矿及入选原料关系及标准[J].甘肃冶金, 2015, 37(6):6-
[12]	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-
[12]	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-
[13]	高东辉，包钢自产和巴润精矿粉的成球性对比和连晶性研究
[13]	高东辉，包钢自产和巴润精矿粉的成球性对比和连晶性研究
[14]	朱德庆，唐艳云，, 等.高压辊磨预处理巴西镜铁矿球团[J].北京科技大学学报, 2009, 31(1):30-35
[14]	朱德庆，唐艳云，, 等.高压辊磨预处理巴西镜铁矿球团[J].北京科技大学学报, 2009, 31(1):30-35
[15]	刘昌.赤铁矿配比对氧化球团制备影响规律研究[D]. 长沙：中南大学，2011
[15]	刘昌.赤铁矿配比对氧化球团制备影响规律研究[D]. 长沙：中南大学，2011
[16]	范晓慧，刘昌，陈许玲，等.提高赤铁精矿配比对制备铁矿氧化球团的影响[J].矿冶工程, 2012, 32(5):94-97
[16]	范晓慧，刘昌，陈许玲，等.提高赤铁精矿配比对制备铁矿氧化球团的影响[J].矿冶工程, 2012, 32(5):94-97
[17]	Qiu Guan-zhou, Zhu De-qin, Pan Jian, et al.Improve the oxidizing kinetics of pelletization of magnetite concentrate by high press roll grinding[J].ISIJ International, 2004, 44(1):69-
[17]	Qiu Guan-zhou, Zhu De-qin, Pan Jian, et al.Improve the oxidizing kinetics of pelletization of magnetite concentrate by high press roll grinding[J].ISIJ International, 2004, 44(1):69-
[18]	T Umadevi，Naveen F Lobo，Rameshwar Sah，et al.Influence of iron ores fineness on green pellets properties[J]. World Iron and Steel，2013（4）：35-40
[18]	T Umadevi，Naveen F Lobo，Rameshwar Sah，et al.Influence of iron ores fineness on green pellets properties[J]. World Iron and Steel，2013（4）：35-40
[19]	杜洪缙，朱德庆，杨聪聪，等.高压辊磨和球磨预处理强化铬铁矿球团制备的研究[J].烧结球团, 2013, 38(6):33-37
[19]	杜洪缙，朱德庆，杨聪聪，等.高压辊磨和球磨预处理强化铬铁矿球团制备的研究[J].烧结球团, 2013, 38(6):33-37
[20]	范建军，杨礼元.高压辊磨预处理对超细粒度磁铁精矿粉球团性能的影响[J].钢铁, 2012, 47(9):19-24
[20]	范建军，杨礼元.高压辊磨预处理对超细粒度磁铁精矿粉球团性能的影响[J].钢铁, 2012, 47(9):19-24
[21]	梁德兰, 范军.赤铁矿球团焙烧过程研究[J]. 球团技术，2006
[21]	梁德兰, 范军.赤铁矿球团焙烧过程研究[J]. 球团技术，2006