以拜耳法赤泥为主要原料,通过添加红土镍矿和焦粉,在电弧炉中直接进行高温碳热还原反应制得了铁合金,研究了红土镍矿和焦粉质量分数对铁合金还原率的影响,以及铁合金的显微组织和硬度.结果表明：在拜耳法赤泥中添加红土镍矿能够制备含有钛、镍、铬等元素的铁合金；随着焦粉含量增加,金属的回收率显著提高；当红土镍矿的质量分数为35％、焦粉的质量分数为30％时,铁合金的总回收率可达到84．86％,铁合金中铁、镍、铬、钛的质量分数分别为84．37％,1．14％,2．05％和2．70％,铁合金为灰口铸铁,镍和铬固溶在铁基体中,而钛与碳形成化合物呈块状析出.
High temperature carbonthermic reduction was used to prepare iron alloy in a electric arc furnace by taking Bayer red mud as main materials,as well,adding laterite nickel ore and coke.The effects of laterite nickel ore and coke contents on reduction rate was studied,as well as,microstructure and hardness of the iron alloy.The results show that a iron alloy with Ti,Ni and Cr elements can be prepared by adding laterite nickel ore in Bayer red mud.The reduction rate of metals increases significantly with the increase of coke content.When the content of laterite nickel ore was 35wt%,the content of coke was 30wt%,the total recovery of the iron alloy reached 84.86%, and the content of Fe,Ni,Cr and Ti was 84.37wt%,1.14wt%,2.05wt% and 2.70wt%,respectively.The iron alloy was gray iron,in which Ni and Cr were dissolved in the iron matrix,while Ti and C forming compounds precipitated in massive form.
参考文献
| [1] | 肖伟 .广西拜耳法高铁赤泥中铝和铁的回收[D].中南大学,2008. |
| [2] | 梁威;王晖;符剑刚;何章兴.从低品位红土镍矿中高效回收镍铁[J].中南大学学报（自然科学版）,2011(8):2173-2177. |
| [3] | 朱德庆;郑国林;潘建;李启厚;安月明;朱景和;刘志宏.低品位红土镍矿制备镍精矿的试验研究[J].中南大学学报（自然科学版）,2013(1):1-7. |
| [4] | 孙镇;赵景富;郑鹏.红土型镍矿RKEF工艺冶炼镍铁实践研究*[J].有色矿冶,2013(3):35-39,51. |
| [5] | K. Jayasankar;P.K. Ray;A.K. Chaubey;A. Padhi;B.K. Satapathy;P.S. Mukherjee.Production of pig iron from red mud waste fines using thermal plasma technology[J].矿物冶金与材料学报,2012(08):679-684. |
| [6] | Swagat S. Rath;K. Jayasankar;Bijoy K. Satapathy.Kinetics and Statistical Behaviour of Iron Recovery from Red Mud using Plasma Arc Furnace[J].HIGH TEMPERATURE MATERIALS AND PROCESSES,20113(3):211-215. |
| [7] | 李博;魏永刚;王华.红土镍矿的固相还原动力学[J].过程工程学报,2011(5):767-771. |
| [8] | 卢红波.红土镍矿电炉还原熔炼镍铁合金的热力学研究[J].稀有金属,2012(5):785-790. |
| [9] | 王智慧;冯萌;贺定勇;陈勇;边汉民.Fe-Cr-C-Ti堆焊合金组织及耐磨性能[J].北京工业大学学报,2013(2):275-279. |
| [10] | 龚建勋;许继青;路德斌;吴慧剑.TiC颗粒对铁-碳-铬-硅合金堆焊层显微组织及耐磨性的影响[J].机械工程材料,2015(4):43-47,52. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%