| 颜新传,向丛阳,童 昊,段亚军,刘洪冰,冯 翔.生料中粗颗粒XRD分析制样细度的确定[J].水泥工程,2025,38(5):47-50 |
| 生料中粗颗粒XRD分析制样细度的确定 |
| Determination of sample fineness for XRD analysis of coarse particles in raw meal |
| |
| DOI： |
| 中文关键词: 生料 粗颗粒矿相 XRD 制粉细度 |
| 英文关键词: raw meal coarse grained mineral phase XRD powder fineness |
| 基金项目: |
|
| 摘要点击次数: 497 |
| 全文下载次数: 0 |
| 中文摘要: |
| 生料筛析试验后，对其筛上物研磨制粉进行XRD物相分析，是进一步得到生料中粗颗粒碳酸盐类或石英类矿相含量的关键步骤，而筛上物研磨制粉的细度水平对Rietveld全谱拟合定量分析结果会产生较大影响。本文对125 μm和63 μm筛析试验筛上物分别研磨至全部通过150 μm、80 μm和45 μm进行XRD检测和Rietveld全谱拟合对比分析，发现仅研磨至全部通过150 μm方孔筛时，所制得的粉体较粗，压片制样进行XRD检测时有明显的颗粒感，Rietveld全谱拟合收敛时的精修可靠性因子（RWP）大于8%，影响分析结果准确性；而研磨至全部通过80 μm或45 μm方孔筛时，RWP均低于8%，且筛上物研磨至全部通过45 μm方孔筛时的RWP相对更低一些，但考虑研磨全部通过45 μm方孔筛的制样效率较低，因此，筛析试验筛上物研磨至全部通过80 μm方孔筛制备粉末样品用于XRD检测分析更为合适。 |
| 英文摘要: |
| After the raw meal sieve analysis test， XRD phase analysis of the milled powder on the sieve is a key step in further obtaining the content of coarse carbonate or quartz mineral phases in the raw meal. The fineness level of the milled powder on the sieve has a significant impact on the quantitative analysis results of Rietveld full spectrum fitting. This article compares and analyzes the XRD detection and Rietveld full spectrum fitting of the 125 μm and 63 μm sieve samples that were ground to pass through 150 μm， 80 μm， and 45 μm respectively. It was found that only when ground to pass through the 150 μm square pore sieve， the resulting powder was coarser， and there was a significant particle feel when pressed for XRD detection. The refinement reliability factor （RWP） of Rietveld full spectrum fitting convergence was greater than 8%， which affected the accuracy of the analysis results; When ground to pass through either the 80 μm or 45 μmsquare sieve， the RWP is lower than 8%， and the RWP of the sieved material is relatively lower when ground to pass through the 45 μm square sieve. However， considering the lower sample preparation efficiency of grinding all through the 45 μm square sieve， it is more suitable to prepare powder samples for XRD detection and analysis by grinding the sieved material to pass through the 80 μm square sieve.
Key words：raw meal；coarse grained mineral phase；XRD；pow |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |