采用场发射扫描电镜、高分辨透射电镜结合X射线能谱、X射线粉晶衍射对叶腊石研磨过程中微结构变化特征进行较系统的研究.结果表明:(1)研磨初期,片层结构叶腊石粉体逐渐微细化,随着研磨强度的增大,粉体颗粒进一步细化并出现团聚;(2)研磨作用使得叶腊石晶体结构发生明显改变,由初期的叶腊石相转变为偏叶腊石相,最终产物为石英和无定形态氧化铝,其中晶态的石英源自叶腊石原矿.
参考文献
[1] | Robertson R H S .Industrial uses of clay minerals[J].Silicates Industries,1973,38(01):33-43. |
[2] | Sanchez S P J;Perez R J L .Caracteristicas generales,propiedades,yacimientos y applicaciones de pirofilita[J].Boletin de Sociedad Espannola de Ceramica Vidrio,1998,37(950):359-368. |
[3] | Perez-Rodriguez J L;Madrid S D V L;Sanchez S P J .Effects of dry grinding on pyrophyllite[J].Clay Minerals,1988,23(04):399-410. |
[4] | Perez-Rodriguez J L;Sanchez S P J .The influence of the dry grinding on the thermal behavior of pyrophyllite[J].Journal of Thermal Analysis and Calorimetry,1991,37(07):1401-1413. |
[5] | Sanchez-Soto P J;Justo A;Perez-Rodriguez J L .Grinding effect on kaolinite-pyrophyllite-illite natural mixtures and its influence on mullite formation[J].Journal of Materials Science,1994,29(05):1276-1283. |
[6] | Temuujin J;Okada K;Jadambaa T S et al.Effect of grinding on the leaching behavior of pyrophyllite[J].Journal of the European Ceramic Society,2003,23(08):1277-1282. |
[7] | Sanchez Soto P J;Justo A;Perez-Rodriguez J L et al.Structural alteration of pyrophyllite by dry grinding as studied by IR spectroscopy[J].Journal of Materials Science Letters,1994,13(12):915-918. |
[8] | Miller J G;Oulton T D .Prototropy in kaolinite during percussive grinding[J].Clays and Clay Minerals,1970,18(04):313-323. |
[9] | Aglietti E F;Potto J M;Pereira E .Mechanchemical effects in kaolinite grinding:textural and physiochemical aspects[J].International Journal of Mineral Processing,1986,16(1-2):125-133. |
[10] | Gonzalez F;Ruiz M T;Gonzalez M .Effects of dry grinding on two kaolins of different degrees of crystallinity[J].Clay Minerals,1991,26(04):549-565. |
[11] | Mingelgrin U;Kliger L;Gal M et al.The effect of grinding on the structure and behavior of bentonites[J].Clays and Clay Minerals,1978,26(04):299-307. |
[12] | Volzone C;Aglietti E F;Scian A N et al.Effect on induced structural modification on the physicochemical begavior of bentonite[J].Applied Clay Science,1987,2(02):97-104. |
[13] | Brindley G W;Wardle R .Monoclinic and triclinic forms of pyrophyllite and pyrophyllite anhydride[J].American Mineralogist,1970,55(08):1259-1272. |
[14] | Zhao H M .Experimental investigation on dehydration of some clay minerals in electron microscope[J].Chinese Science Bulletin,1987,33(02):262-263. |
[15] | Xin RL;Leng Y;Wang N .In situ TEM examinations of octacalcium phosphate to hydroxyapatite transformation[J].Journal of Crystal Growth,2006(1):339-344. |
[16] | M. Erdemoglu;M. Sarikaya .The effect of grinding on pyrophyllite flotation[J].Minerals Engineering,2002(10):723-725. |
[17] | Samanta P.;Sarkar CK. .Coupled charge trapping dynamics in thin SiO2 gate oxide under Fowler-Nordheim stress at low electron fluence[J].Journal of Applied Physics,1998(5):2662-2669. |
[18] | 唐振方,莫党.电子束辐照下纳米二氧化硅的类烧结现象[C].第四届全国超微颗粒学术研讨会论文集,1998:46~48. |
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