添加剂对高MgO烧结矿中铁酸钙生成的影响

doi:10.13228/j.boyuan.issn0449-749x.20140161

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (0 KB) HTML (0 KB)
Export: BibTeX | EndNote (RIS)

Abstract Production of rich-containing MgO sinters has become one of the effective ways to solve the problems，such as high viscosity and low desulfurization ability of the slag which was brought by large use of high-alumina iron ores in blast furnace. However，rich-containing MgO raw materials decrease the quantity of binding phase during sintering process to make the strength of sinter worse. This study aims to increase the amount of calcium ferrite(SFCA) by adding additives with low melting point into iron ore fines to improve the quality of sinters. The B2O3，CaCl2 and Na2SiO3 were used as additives to add into high-alumina iron ore fines with rich-containing MgO. The effect of additives on sintering process was investigated according to the results of patterns and optical microstructure of sintered samples from XRD. The results showed that the three kinds of additives have a promotion to form SFCA，but the effects are different. When the mass percent of MgO is 4%，the appropriate amount（mass percent） of B2O3，CaCl2 or Na2SiO is 0.094%，0.470% and 0.470% respectively. It can promote SFCA formation with more amount，and little additive is good for acicular morphology. Another result indicates that increase of binding phase helps to generate more magnetite under the high content of MgO.

Key words： MgO additives SFCA sinter

Received: 24 March 2014 Published: 02 February 2015

PACS:

TF046

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	YAO Jun-Hao
	YANG Jun
	HAN Dong
	GUO Xin-Min

Cite this article:

YAO Jun-Hao,YANG Jun,HAN Dong等. Effect of additives on formation of calcium ferrites in magnesia-riched sinters[J]. Iron and Steel, 2015, 50(2): 12-16.

URL:

http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20140161 OR http://www.chinamet.cn/Jweb_gt/EN/Y2015/V50/I2/12

[1]	陈培敦，孙守建，赵树明.高A12O3炉渣对高炉生产的影响[J].山东冶金, 2005, 27(1):12-13
[1]	陈培敦，孙守建，赵树明.高A12O3炉渣对高炉生产的影响[J].山东冶金, 2005, 27(1):12-13
[2]	郁庆瑶，张龙来，林成城.A12O3含量对高炉炉渣流动性影响的实验研究[J].安徽工业大学学报, 2003, 20(4):37-40
[2]	郁庆瑶，张龙来，林成城.A12O3含量对高炉炉渣流动性影响的实验研究[J].安徽工业大学学报, 2003, 20(4):37-40
[3]	吴胜利，韩宏亮，等.烧结矿中MgO作用机理[J].北京科技大学学报, 2009, 31(4):428-432
[3]	吴胜利，韩宏亮，等.烧结矿中MgO作用机理[J].北京科技大学学报, 2009, 31(4):428-432
[4]	范晓慧，李文琦，等.对高碱度烧结矿强度的影响及机理[J].中南大学学报自然科学版, 2012, 43(9):3325-3330
[4]	范晓慧，李文琦，等.对高碱度烧结矿强度的影响及机理[J].中南大学学报自然科学版, 2012, 43(9):3325-3330
[5]	诸荣孙，黄绪风，李志全，等.催化助燃剂强化烧结工业试验及机理分析[J].钢铁, 2002, 37(9):1-4
[5]	诸荣孙，黄绪风，李志全，等.催化助燃剂强化烧结工业试验及机理分析[J].钢铁, 2002, 37(9):1-4
[6]	段东平.硼泥在赤铁矿烧结中的应用研究[J].矿业工程, 1998, 18(增1):83-87
[6]	段东平.硼泥在赤铁矿烧结中的应用研究[J].矿业工程, 1998, 18(增1):83-87
[7]	张贺雷，李思导.实现高氧位烧结新途径[J].宝钢技术, , :-
[7]	张贺雷，李思导.实现高氧位烧结新途径[J].宝钢技术, , :-
[8]	张玉柱，李振国，郎建峰，等.硼镁复合添加剂应用实践与硼镁交互作用机理[J].钢铁, 2002, 37(7):8-11
[8]	张玉柱，李振国，郎建峰，等.硼镁复合添加剂应用实践与硼镁交互作用机理[J].钢铁, 2002, 37(7):8-11
[9]	郭兴敏，张俊，李春增，等.准化学平衡条件下对多元铁酸钙生成的影响[J].钢铁, 2009, 44(4):16-19
[9]	郭兴敏，张俊，李春增，等.准化学平衡条件下对多元铁酸钙生成的影响[J].钢铁, 2009, 44(4):16-19
[10]	Mark I.Pownceby, Tim R.C.Patric.Stability of SFC (silico-ferrite of calcium): solid solution limits, thermal stability and selected phase relationships within the Fe2O3-CaO-SiO2 (FCS) system[J]. Mineral，2000，12：455-468
[10]	Mark I.Pownceby, Tim R.C.Patric.Stability of SFC (silico-ferrite of calcium): solid solution limits, thermal stability and selected phase relationships within the Fe2O3-CaO-SiO2 (FCS) system[J]. Mineral，2000，12：455-468