摘要
应用Ｄ／ＭＡＸ－３ＥＸ射线衍射、ＩＲ－４４０红外光谱法研究了赋存于氧化铝水合物中的Ｎａ＿２Ｏ在煅烧过程中的行为。β－Ｎａ＿２Ｏ．Ａｌ＿２Ｏ＿３随温度升高而分解，最终是α－Ａｌ＿２Ｏ＿３与Ｎａ＿２Ｏ·１１Ａｌ＿２Ｏ＿３共存。氧化铝水合物中的Ｎａ＿２Ｏ含量增加，锻烧产品的α－Ａｌ＿２Ｏ＿３含量减少、比表面积降低。
Na_2O behaviour in alumina hydrate in the process of calcination bave been studied by means of D/Max-3B X-ray diffractometer and IR-440 infrared spectrophotometer。This result express that β-Na_2O· Al_2O_3 is decomposed as the temperature increase and the coexistence of α-Al_2O_3 with Na_2O.Al_2O_3 is formed at tbe end.α-Al_2O_3 content in calcined products is decreased and the specific surface area is lowed as the content of Na_2O in alumina hydrate is increasing.
出处
《山东冶金》
1994年第5期29-32,共4页
Shandong Metallurgy
关键词
氢氧化铝
氧化钠
煅烧
aluminium hydroxide,sodium oxide, calcination ,process minerals
