利用低品位铝质岩制备镁铝尖晶石陶瓷
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摘要
以贵州修文地区某低品位铝质岩为主要原料,采用高温烧结制备镁铝尖晶石陶瓷。研究分析了原料的配比、烧结制品,并对其抗压、抗折性能及吸水率进行测定。试验结果表明,烧结温度为1 200℃,试验最佳质量配比为低品位铝质岩60. 86%、高岭土28. 68%、石英2. 46%、白云石粉8%,其吸水率为0. 4%、抗压强度为49. 1 MPa、抗折强度为8. 2 MPa。XRD测试分析:试样的主要成分为镁铝尖晶石(MgAl2O4)、尖晶橄榄石(Mg2Si O4)、石英(Si O2),三者比例分别为55%、25%、20%。
The low grade aluminous rocks in Guizhou Xiuwen area were used as the main raw materials to prepare magnesia spinel ceramics by high temperature sintering. The ratio of raw materials and the sintered products were studied and analyzed. Then the compression,bending resistance and water absorption were measured. The experimental results showed that the sintering temperature was 1 200℃. The best proportions of raw materials were 60. 86% low grade aluminum rock,28. 68% kaolin,2. 46% quartz,and 8% dolomite powder. The water absorption of ceramics was 0. 4%,the compressive strength was 49. 1 MPa,and the flexural strength was 8. 2 MPa. The analysis results of XRD indicated that the main compositions of the sample were magnesium-alumina spinel( Mg Al2 O4),pointe olivine( Mg2 Si O4) and quartz( Si O2) with proportions of 55%,25% and 20%,respectively.
The low grade aluminous rocks in Guizhou Xiuwen area were used as the main raw materials to prepare magnesia spinel ceramics by high temperature sintering. The ratio of raw materials and the sintered products were studied and analyzed. Then the compression,bending resistance and water absorption were measured. The experimental results showed that the sintering temperature was 1 200℃. The best proportions of raw materials were 60. 86% low grade aluminum rock,28. 68% kaolin,2. 46% quartz,and 8% dolomite powder. The water absorption of ceramics was 0. 4%,the compressive strength was 49. 1 MPa,and the flexural strength was 8. 2 MPa. The analysis results of XRD indicated that the main compositions of the sample were magnesium-alumina spinel( Mg Al2 O4),pointe olivine( Mg2 Si O4) and quartz( Si O2) with proportions of 55%,25% and 20%,respectively.
引文
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[2]冯聪,薛亚洲.我国铝资源开发利用现状及综合利用对策建议[J].矿产保护与利用,2013(3):55-58.
[3]倪元,张杰.利用低品位铝质岩制备耐火砖的试验研究[J].现代矿业,2010(12):108-109.
[4]王建蕊,张杰,李琼琼,等.铝质岩制备矿物聚合物材料的实验研究[J].硅酸盐通报,2014(9):2212-2216.
[5]Teore,常亮.用于耐火材料的镁铝尖晶石[J].耐火与石灰,1989,14(7):18-22.
[6]江副正信.尖晶石的特性及在耐火材料中的应用[J].耐火与石灰,1991(10):21-26.
[7]Sarkar R,Das S K,Banerjee G. Calcination effect on magnesium hydroxide and aluminium hydroxide for the development of magnesium aluminate spinel[J]. Ceramics international,2000,26(1):25-28.
[8]Cunha Duncan F N,Bradt R C. Synthesis of magnesium aluminate spinels from bauxites and magnesias[J]. Journal of the American ceramic society,2010,85(12):2995-3003.
[9]李小明,杨志红.自分散低温烧成镁铝尖晶石制品的研究[J].陶瓷工程,1997,31(1):6-9.
[10]黄宏,黄朝晖,房明浩,等. Li CoO2合成过程对镁铝尖晶石陶瓷侵蚀的研究[J].硅酸盐通报,2011,30(3):515-518.
[11] Sarkar R,Das S K,Banerjee G. Effect of additives on the densification of reaction sintered and presynthesised spinels[J]. Ceramics international,2003,29(1):55-59.
[12]徐晓虹,刘鑫坤,吴建锋,等.原位合成镁铝尖晶石-堇青石复相陶瓷的研究[J].武汉理工大学学报,2016,38(3):15-22.
[13]钦征骑.新型陶瓷材料手册[J].江苏陶瓷,2005(3):45.
[14]《陶瓷墙地砖生产》编写组.陶瓷墙地砖生产[M].北京:中国建筑工业出版社,1983.
[15]汪德宁,徐颖,徐东,等.金属间化合物FeAl与α-Al2O3的界面润湿行为及合金元素Y和Nb的作用[J].材料科学与工艺,1996(1):5-9.