%0 Journal Article
%T 两段碳酸化法分离氧化铝和氧化镓的研究        -
%A 储向峰
%A 徐梦
%A 李婷
%A 白林山
%A 董永平
%A 辛志峰
%J 洁净煤技术
%D 2016
%X 为了从高铝粉煤灰中提取含量可控的氧化镓和氧化铝的混合物,利用氢氧化镓与氢氧化铝在碱性溶液中析出的酸度不同,采用两段碳酸化的方法,分离出一定量的氧化铝,得到氧化镓和氧化铝的混合物。探讨了第一次碳酸化条件(即不同p H、不同流量、不同温度)对氧化铝和氧化镓分离效果的影响。实验结果表明:p H值为11.23,温度为80℃,CO_2流量为40 m L/min时,最终得到的氧化镓和氧化铝的混合物中,镓的含量为5.7550 mg/g。 In order to extract mixture of alumina and gallium oxide from high-aluminum fly ash,the separation of alumina and gallium oxide with two-stage carbonization method was studied according to the difference of acidity between gallium hydroxide and aluminum hydroxide precipitation in alkaline solution. A certain amount of alumina was isolated. Taking the first-stage carbonization process as research object,the influence of p H,flow rate and temperature on the separation of alumina and gallium oxide. The results showed that,when the p H was 11. 23,the temperature was 80 ℃,the flow rate of CO_2 was 40 m L / min. The content of Ga in the mixture could reach 5. 7550 mg / g
%K 粉煤灰
%K 两段碳酸化
%K 分离
%K 氧化铝
%K 氧化镓 fly ash
%K two-stage carbonization
%K separation
%K alumina
%K gallium oxide
%U http://www.jjmjs.com.cn/WKD/WebPublication/paperDigest.aspx?paperID=5fb1ab0c-21bf-48a6-bf61-9185b090832e