| 碱性矿物质对煤灰熔融特性影响的研究 |
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| 引用本文： | 毛军,徐明厚,李帆. 碱性矿物质对煤灰熔融特性影响的研究[J]. 华中科技大学学报(自然科学版), 2003, 31(4): 59-62 |
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| 作者姓名： | 毛军 徐明厚 李帆 |
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| 作者单位： | 华中科技大学煤燃烧国家重点实验室 |
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| 基金项目： | 教育部科学技术重点研究基金资助项目 (0 0 0 83) |
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| 摘 要： | 将K20和Na20添加剂按不同比例分别掺人两种煤灰中制成混合灰样，对混合灰样的熔融特性进行实验研究，采用X衍射图谱得到混合灰样不同温度的矿物组成，并利用三元系统相图进行分析．结果表明，在还原性气氛下，混合灰样灰熔点特性曲线与K2O-Al2O3-SiO2和Na2O-Al2O3-Sio2三元系统相图液相线温度曲线相似；在高温下混合灰样的矿物组成与三元系统相图的矿物组成基本一致．
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| 关 键 词： | 煤灰 碱性矿物质 三元相图 熔融特性 矿物组成 粉煤燃烧锅炉 结渣趋势 |
| 文章编号： | 1671-4512(2003)04-0059-04 |
| 修稿时间： | 2002-10-08 |
The effect of alkali mineral matter on the ash melting characteristic |
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| Mao Jun Xu Minghou Li Fan Mao Jun Postgraduate, State Key Lab. of Coal Combustion,Huazhong Univ. of Sci. , Tech.,Wuhan ,China.. The effect of alkali mineral matter on the ash melting characteristic[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2003, 31(4): 59-62 |
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| Authors: | Mao Jun Xu Minghou Li Fan Mao Jun Postgraduate State Key Lab. of Coal Combustion Huazhong Univ. of Sci. & Tech. Wuhan China. |
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| Affiliation: | Mao Jun Xu Minghou Li Fan Mao Jun Postgraduate, State Key Lab. of Coal Combustion,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | Mixed ash samples were prepared by adding coal ashes and additives of K 2O and Na 2O in different ratios. The melting characteristics and the mineral composition of the samples were investigated and a ternary phase diagram was used. Under the condition of reducing atmosphere, it is shown that the melting point characteristics of the samples were similar to those of the phase diagrams of the ternary systems K 2O Al 2O 3 SiO 2 and Na 2O Al 2O 3 SiO 2. At high temperature, the mineral composition of the samples was nearly as same as that of the ternary systems. |
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| Keywords: | coal ash alkali mineral matter ternary phase diagram ash melting characteristic |
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