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首页> 外文会议>第七届国际耐火材料学术会议（ISR2016）论文集 >The Impact of Bauxite on Performance and Structure of SiC-mullite Brick
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The Impact of Bauxite on Performance and Structure of SiC-mullite Brick

机译：铝土矿对SiC莫来石砖性能和结构的影响

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摘要

SiC-mullite brick is widely used in the upper and lower transitional zones of cement rotary kilns, due to excellent thermal shock resistance, and abrasion-resistance.The investigation of different bauxites is made on the performance and micro-structure of SiC-mullite brick, especially thermal shock resistance.In two batches of bricks (G1 and G2), and two grades of bauxites (L1 and L2),samples'physical and chemical properties are tested,and microstructure and phase composition are studied by SEM and XRD.The results show that Raw Materials L1, containing large numbers of micro-poles smaller than 4 μm, and has well developed mullite phase.While using L1 as aggregates and fines, SiC-mullite brick Glhas excellent high temperature properties, such as hot modulus of rupture and thermal shock resistance.Therefore, for manufacture of SiC-mullite brick, not only chemical composition, bulk density and open porosity of bauxite are important, but also its microstructure has to be considered, such as phase composition, crystal size and pore size and distribution.
机译：SiC-莫来石砖由于具有优异的抗热震性和耐磨性而被广泛应用于水泥回转窑的上下过渡区域。研究了不同铝土矿对SiC-莫来石砖的性能和微观结构的影响。在两批砖块（G1和G2）和两种等级的铝土矿（L1和L2）中，测试了样品的理化性质，并通过SEM和XRD研究了其微观结构和相组成。结果表明，原料L1中含有大量小于4μm的微极且具有发达的莫来石相。以L1为骨料和细粉的SiC-莫来石砖Gl具有优异的高温性能，例如热断裂模量因此，对于制造SiC-莫来石砖，不仅铝土矿的化学组成，堆积密度和开孔率很重要，而且还必须考虑其微观结构，例如s的相组成，晶体尺寸和孔径及分布。

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