白云母粉体超细磨过程研究
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摘要
为了解白云母粉体超细磨过程的特点,对白云母超细磨产品进行了SEM、XRD、XPS和FTIR表征。结果表明:当超细磨时间小于0.5 h时,元素K的结合能漂移较大,白云母主要沿解理面断裂;当超细磨时间为1 h时,元素Al的结合能变化最大,白云母主要沿端面断裂。随着超细磨时间的延长,白云母形貌由不规则多边片状变化为颗粒状,并且粉体颗粒明显细化。白云母的特征衍射峰强度逐渐减小,Si-O键的非对称伸缩振动峰发生简并扩宽,其对称伸缩振动吸收峰则发生分裂,白云母粉体有序结构逐渐遭到破坏并出现无定形化现象。研究对白云母超细磨工艺参数的优化及工业化生产有一定参考意义。
In order to investigate the characteristics of muscovite powder ultrafine grinding process, SEM、XRD、XPS and FTIR were used to character ultrafine grinding product muscovite, and the results show that the drifting of binding energy of K was bigger when ultrafine grinding time less than 0.5 h, which indicates that muscovite ruptures mainly along the direction of its cleavage plane; However, when ultrafine grinding time more than 0.5 h, the drifting of binding energy of K was bigger, indicating that muscovite mainly breaks along the direction being parallel to its end face when ultrafine grinding time more than 1 h; As increasing of gringding time, the morphology of muscovite changed from flake with irregular edge to granular, and the particle was obviously refined. The strengths of characteristic XRD diffraction peaks of muscovite gradually decrease. Additionally, the asymmetrical stretching vibration peaks of Si-O bond degenerate and broaden, but symmetric stretching vibration absorption peaks split. It is believed that the ordered structure of muscovite powder was gradually destroyed, then the amorphous transformation occured in the process of gringding. This study may serve as a reference for optimization of ultrafine grinding process parameters and industrial production of muscovite.
In order to investigate the characteristics of muscovite powder ultrafine grinding process, SEM、XRD、XPS and FTIR were used to character ultrafine grinding product muscovite, and the results show that the drifting of binding energy of K was bigger when ultrafine grinding time less than 0.5 h, which indicates that muscovite ruptures mainly along the direction of its cleavage plane; However, when ultrafine grinding time more than 0.5 h, the drifting of binding energy of K was bigger, indicating that muscovite mainly breaks along the direction being parallel to its end face when ultrafine grinding time more than 1 h; As increasing of gringding time, the morphology of muscovite changed from flake with irregular edge to granular, and the particle was obviously refined. The strengths of characteristic XRD diffraction peaks of muscovite gradually decrease. Additionally, the asymmetrical stretching vibration peaks of Si-O bond degenerate and broaden, but symmetric stretching vibration absorption peaks split. It is believed that the ordered structure of muscovite powder was gradually destroyed, then the amorphous transformation occured in the process of gringding. This study may serve as a reference for optimization of ultrafine grinding process parameters and industrial production of muscovite.
引文
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[2] 管俊芳,程飞飞,胡林强,等.白云母粉的表面改性及应用研究[J].非金属矿,2014,37(6):26-28,32.
[3] 赵蓉旭,滕令坡,敖国龙.用马尔文MS2000激光粒度分析仪测定颜填料粉体粒度[J].中国涂料,2014,29(3):64-69.
[4] 何建璋,王毓华.可可托海矿片状白云母资源的综合回收[J].有色金属,2003,55(1):99-101.
[5] 高岩磊,周二鹏,梁惠霞,等.PA-6/云母复合材料性能研究[J].硅酸盐通报,2011,30(2):428-430.
[6] 郑水林.非金属矿物材料[M].北京:化学工业出版社,2007.
[7] 傅东.湿法云母粉分级技术的新突破[J].矿产保护与利用,2001(1):19.
[8] 何廷树,郭高巍,王宇斌,等.正交试验在白云母超细磨中的应用[J].非金属矿,2015,38(2):43-45.