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Synthesis of Calcium Hexaluminate from Waste Slag of Aluminum and Oyster Shell

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【作者】 庄国鑫何亚军MALCOLM Clark于岩

【Author】 ZHUANG Guo-Xin;HE Ya-Jun;MALCOLM Clark;YU Yan;Key Laboratory of Eco-materials Advanced Technology(Fuzhou University),Fujian Province University;College of Materials Science and Engineering,Fuzhou University,New Campus;Marine Ecology Research Centre,School of Environment,Science and Engineering,Southern Cross University;

【机构】 Key Laboratory of Eco-materials Advanced Technology(Fuzhou University),Fujian Province UniversityCollege of Materials Science and Engineering,Fuzhou University,New CampusMarine Ecology Research Centre,School of Environment,Science and Engineering,Southern Cross University

【摘要】 Waste aluminum slag and oyster shell were used as raw materials to synthesize calcium hexaluminate(CA6). The effects of different source materials of CaO and sintering temperature on the structures and properties of CA6 were investigated,respectively. The results show that compared to calcium oxide,oyster shell can lower the formation temperature of CA6,hence CA6 can be detected at 1300 ℃ by using oyster shell as the starting raw materials. Increasing the sintering temperature can promote the crystal growth. CA6 crystals show typical platelet shape,and its optimum sintering temperature falls in the 14501550 ℃ region. The bulk density is 1.541.83 g/cm3,the apparent porosity is 44.155.2% and the flexural strength is 10.825.3 MPa.

【基金】 Supported by the National Natural Science Foundation of China(Nos.51102047 and 51472050)
【所属期刊栏目】 materials structural chemistry (2016年01期)
  • 【DOI】10.14102/j.cnki.0254-5861.2011-0813
  • 【分类号】TQ132.32
  • 【下载频次】16
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