中文摘要：

实验对比了燃烧灰与负载Na2CO3催化气化灰中Al的溶出行为,考察了Na2CO3负载量（0-15%,质量分数）和温度（600-1 000℃）对催化气化灰中主要矿物组成与Al溶出行为的影响。同时,采用XRD分析了燃烧灰、催化气化灰以及酸浸残渣的主要组成。结果表明,燃烧灰的主要组成为莫来石,而催化气化灰的主要组成为硅铝酸钠（（Na2O）（0.33）NaAlSiO4）。6 mol/L硫酸、60℃和30 min浸取条件下,燃烧灰的浸出率只有40%,而Na2CO3负载量为10%的催化气化灰的浸出率达到88%。催化气化灰更易于回收灰中的Al。

英文摘要：

The leaching behaviors of aluminum in ash from combustion and catalytic gasification,and effects of Na2CO3 addition（0-15%）,temperature（600-1 000℃）on Al leaching behaviors and mineral composition were investigated.The compositions of ash from combustion and gasification,and acid leaching residue were investigated by XRD.The results shows that the combustion ash is predominantly composed of mullite,while that from catalytic gasification is sodium aluminum silicate（（Na2O）0.33NaAlSiO4）.The Al extraction yield of combustion ash only reaches 40%at leaching conditions of 6 mol/L H2SO4,60℃and 30 min,while that of catalytic gasification ash with 10%Na2CO3 addition can reach 88%.The catalytic gasification with Na2CO3 addition can achieve higher Al extraction yield.