通过机械粉磨时间对铁尾矿粉密度、比表面积、颗粒分布以及微观形貌影响研究得出：随着粉磨时间的延长，铁尾矿粉颗粒逐渐被细化，密度先减后增，比表面积先增后减；粉磨2 h时，比表面积达到最大值770 m2／kg，粒径（5±2）μm的颗粒含量约为40％，且小于5．13μm的颗粒累积含量最高，但过度粉磨会有弱团聚现象；通过研究机械力活化对铁尾矿粉活性的影响以及红外光谱（ IR）分析得出：粉磨2 h的铁尾矿粉在10％～50％掺量下，其3 d、7 d、28 d抗折强度比与活性指数均为最大值，该粉磨时间下最大程度的活化了铁尾矿粉；机械粉磨细化作用使颗粒无序化物质增多，致使活性提高。
Effects of grinding time on density , ratio surface area , particle distribution and micrographs of iron tailing powder were discussed , it concluded that iron tailings powder particles was gradually refined , meanwhile the density first decreased and then increased , the specific surface area increased first and then decreased with the extension of grinding time .When the grinding time was 2 h, the specific surface area reached the maximum value of 700 m2/kg particle size (5 ±2) μm particle content is about 40%, less than 5.13 μm diameter of particles accumulate the highest .But excessive grinding will have weak agglomeration .It was suggested by the analysis of mechanical activation effect on the activity of the iron ore tailing and IR that, at 10%-50%content of the grinding of 2 h iron ore tailings, the flexural strength ratio and the activity index of 3 d, 7 d and 28 d were the maximum.The grinding time maximum activated iron ore tailing .The grain refinement disordered substances increased , resulting in enhanced activity by mechanical grinding .
参考文献
| [1] | 魏瑞丽;张婕.铁尾矿资源化利用研究进展[J].矿业工程,2014(1):56-59. |
| [2] | 邓文;江登榜;杨波;兰尧中.我国铁尾矿综合利用现状和存在的问题[J].现代矿业,2012(9):1-3. |
| [3] | 陈永亮;张一敏;陈铁军.铁尾矿建材资源化研究进展[J].金属矿山,2009(1):162-165. |
| [4] | 秦煜民.磁选尾矿铁资源回收利用现状与前景[J].中国矿业,2010(05):47-49. |
| [5] | 余春刚;李心继;赵仁应;尹德深;程麟;殷志峰;朱成桂.梅山铁尾矿代替铁粉研制优质水泥熟料[J].水泥工程,2008(5):19-23. |
| [6] | 张锦瑞;倪文;王亚利.利用铁尾矿制取微晶玻璃的研究[J].金属矿山,2005(11):72-74. |
| [7] | 蔡基伟;张少波;侯桂香;王春梅;封孝信.铁尾矿砂对混凝土工作性和强度的影响[J].武汉理工大学学报,2009(7):104-107. |
| [8] | 郝保红.超细粉磨时粉石英化学键变化的红外光谱分析[J].矿冶工程,2001(04):64-66. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%