应用X射线衍射-红外光谱等技术研究滑石在机械力研磨中的形貌和晶体结构变化及影响机制

任叶叶; 张俭; 严俊; 林剑; 陈思杭; 盛嘉伟

doi:10.15898/j.cnki.11-2131/td.2015.02.005

应用X射线衍射-红外光谱等技术研究滑石在机械力研磨中的形貌和晶体结构变化及影响机制

1.
浙江工业大学材料科学与工程学院, 浙江杭州 310014

2.
浙江省质量检测科学研究院, 浙江杭州 310014

基金项目: 浙江省自然科学基金资助项目(LY14E020004);浙江省研究生教育创新基金项目(1004);浙江省大学生科技创新项目(2010R403048)

详细信息

作者简介: 任叶叶, 硕士研究生, 材料科学与工程专业, 从事矿物功能材料研究

通讯作者: 盛嘉伟, 教授, 博士生导师, 从事无机功能材料研究.E-mail:79583526@qq.com

中图分类号: O657.34;O657.33

收稿日期: 2014-09-18

修回日期: 2015-02-17

录用日期: 2015-03-04

刊出日期: 2015-02-25

Applicaltion of X-ray Diffraction and Infrared Spectroscopy Techniques for Revealing Effect Mechanism of Mechanical Grinding on the Morphology and Crystalline Structure of Talc

1.
College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China

2.
Zhejiang Institute of Quality Inspection Science, Hangzhou 310014, China

More Information

Corresponding author: SHENG Jia-wei, 79583526@qq.com

Received Date: 18 September 2014

Revised Date: 17 February 2015

Accepted Date: 04 March 2015

Publish Date: 25 February 2015

摘要

摘要:
滑石的颗粒粒径、形貌、晶型等对其应用的实效性、终端产品的性能产生极大影响, 目前主要研究其表面改性, 而有关微观形貌及晶体结构研究较少。本文利用X射线荧光光谱、X射线衍射分析、红外光谱、粒度分析仪结合高分辨场发射扫描电镜(FE-SEM)技术对辽宁滑石粉在高强度机械力研磨作用下的微形貌和晶体结构变化特征进行系统研究。结果表明滑石粉原矿混合物中MgO与SiO₂的分子个数比约为0.45, 该数值明显低于纯滑石粉晶体中MgO与SiO₂的分子个数比0.75。此类滑石为典型的单斜晶系, 研磨作用使滑石粉由晶态转变为非晶态结构, 其层状结构的有序化和键合作用发生了明显的变化。滑石粒度随研磨时间变化呈现减小-增大-减小的循环过程。研磨后粉体形貌存在差异, 细化的小颗粒粉体因团聚而呈“准球体”, 且随着研磨的进行出现细化-团聚-细化的反复过程。此结论这对于滑石的深加工与应用及其相关矿物粉体的研究具有一定的参考价值。
- 滑石粉 /
- 研磨 /
- 团聚 /
- 准球体 /
- X射线荧光光谱法 /
- X射线衍射法 /
- 红外光谱法 /
- 粒度分析仪 /
- 高分辨场发射扫描电镜
Abstract:
The particle size, morphology and crystal type of talc have important effects on its effective application and the function of the end products. Current study of talc focuses mainly on the surface modification, but there are few studies on their morphology and crystalline structure. The changes of morphology and crystalline structure of talc from Liaoning induced by strong mechanic grinding were investigated using X-ray Fluorescence Spectrometry (XRF), X-ray Diffraction (XRD), Infrared Spectroscopy, Particle Size Analyzer and Field Emission Scanning Microscopy (FE-SEM). The results show that the MgO/SiO₂ molar ratio is 0.45, which is lower than the calculated value (0.75) for ideal talc. The crystalline structure has been destroyed after prolonged grinding. Namely, the structure of talc is changed from a crystalline state into an amorphous state after grinding. With the increase of grinding time, the particle size repeats diminution, enlargement, diminution processes. The morphology of powder was changed after grinding, which gradually changed to be a torispherical shape, and then had a refinement-reunion-refinement process. The conclusion of the circulation change has an important guiding significance and reference value for the further processing and application of talc and the study of related mineral powders.
- talc powder /
- grinding /
- reunion /
- quasisphere /
- X-ray Fluorescence Spectrometry (XRF) /
- X-ray Diffraction (XRD) /
- Infrared Spectroscopy /
- Particle Size Analyzer /
- Field Emission Scanning Microscopy (FE-SEM)

HTML全文

图 1 滑石粉原粉粉体粒度分布

Figure 1.

下载: 全尺寸图片幻灯片

图 2 滑石粉原粉及不同研磨时间粉体X射线粉晶衍射图谱

Figure 2.

下载: 全尺寸图片幻灯片

图 3 滑石粉原粉及不同研磨时间粉体红外光谱谱图和粒度分布

Figure 3.

下载: 全尺寸图片幻灯片

图 4 不同研磨时间下滑石粉体的场发射扫描电镜照片

Figure 4.

下载: 全尺寸图片幻灯片

表 1 滑石粉物化性能

Table 1. The physical and chemical characteristics of the original talc sample

化学成分含量(%) 化学成分含量(%)

SiO₂ 51.8 ZnO 4.84

Al₂O₃ 19.6 Fe₂O₃ 2.13

MgO 15.5 Cl 0.262

CaO 5.56 Cr₂O₃ 0.261

P₂O₅ 0.0203 SO₃ 0.0834

K₂O 0.0106 MnO 0.0209

NiO 0.0087 Ga₂O₃ 0.0067

下载: 导出CSV

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化学成分	含量(%)	化学成分	含量(%)
SiO₂	51.8	ZnO	4.84
Al₂O₃	19.6	Fe₂O₃	2.13
MgO	15.5	Cl	0.262
CaO	5.56	Cr₂O₃	0.261
P₂O₅	0.0203	SO₃	0.0834
K₂O	0.0106	MnO	0.0209
NiO	0.0087	Ga₂O₃	0.0067

应用X射线衍射-红外光谱等技术研究滑石在机械力研磨中的形貌和晶体结构变化及影响机制

1. 浙江工业大学材料科学与工程学院, 浙江 杭州 310014 2. 浙江省质量检测科学研究院, 浙江 杭州 310014

作者简介: 任叶叶, 硕士研究生, 材料科学与工程专业, 从事矿物功能材料研究

通讯作者: 盛嘉伟, 教授, 博士生导师, 从事无机功能材料研究.E-mail:79583526@qq.com

Applicaltion of X-ray Diffraction and Infrared Spectroscopy Techniques for Revealing Effect Mechanism of Mechanical Grinding on the Morphology and Crystalline Structure of Talc

1. College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China 2. Zhejiang Institute of Quality Inspection Science, Hangzhou 310014, China

Corresponding author: SHENG Jia-wei, 79583526@qq.com

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目录

1.
浙江工业大学材料科学与工程学院, 浙江杭州 310014

2.
浙江省质量检测科学研究院, 浙江杭州 310014

1.
College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China

2.
Zhejiang Institute of Quality Inspection Science, Hangzhou 310014, China