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首页> 外文期刊>Boletin de la Sociedad Espanola de Ceramica y Vidrio >Influence of mechanical and thermal treatments on raw materials containing pyrophyllite
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Influence of mechanical and thermal treatments on raw materials containing pyrophyllite

机译：机械和热处理对含热料料的原料的影响

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摘要

In the present work results obtained in a study onthe influence of thermal, mechanical by dry grinding, and theircombination, in raw materials containing pyrophyllite, arediscussed. First of all, it is studied the influence of thermaltreatment concerning the development and evolution of crystallinephases (mullite and cristobalite) from dehydroxylated pyrophyllite.On the basis of these results, it is analyzed what happens in anatural raw mixture of pyrophyllite with kaolinite and mica(sericite) submitted to thermal treatments The raw pyrophyllitematerials are altered under laboratory conditions using mechanicaltreatments by dry grinding. It is noted that the increase of surfacearea and particle size reduction is produced by grinding, but othereffects are produced on the structure and properties of the solidsubmitted to grinding. In general, grinding leads to a progressivedestruction of the original crystal structure of the present layeredsilicates, but it is preferentially produced along the "c" axis. Inother words, mechanochemical reactions are induced by drygrinding due to the increase of reactivity of the system. Betweenthese reactions, it is enhanced the reagglomeration process thatoccurs above a determinate limit of grinding time. The grindingtreatment can be combined with a subsequent thermal treatmentthat enhances the increase of reactivity producing the formation ofcrystalline phases (mullite and cristobalite) at lower temperaturesthat in unground samples with energy saving. The results arecompared taking into account the crystal structures of bothkaolinite and pyrophyllite, the thermal transformation of kaoliniteto mullite, and the process of grinding kaolinite because this layersilicate is present in the raw materials containing pyrophyllite.
机译：在目前在研究中获得的工作结果，在含有纤维素溶解的原料中的热，机械通过干式研磨和它们的混合物的影响。首先，研究了热处理的影响与脱羟基化纤维素溶解的结晶蛋白酶（Mullite和Cristobalite）的发育和演化的影响。这些结果的基础，分析了与高岭石和云母的纤维素脂肪酸盐的植物原料混合物中发生的情况（提交给热处理的绢云母原料纤维素LITEMATERSIES通过干式研磨使用机械培训在实验室条件下改变。注意，通过研磨产生表面和粒度和粒度减少的增加，但是在固体磨削的结构和性质上产生了othereffects。通常，研磨导致本分层的原始晶体结构的进程，但优先沿“C”轴线产生。根据系统的反应性的增加，通过对机械化学反应诱导机械化学反应。在反应中，它增强了Regggomeration过程以上的磨削时间的极限。研磨处理可以与随后的热处理组合，该热处理可以增强在较低温度的较低温度下产生的反应性的增加（Mullite和Cristobalite），以节能的节能。结果表明，考虑到辛酸和氟化石的晶体结构，Kaolinito莫来石的热转化，以及研磨高岭石的过程，因为该晶体含有含有辉煌的原料。

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