一水硬铝石的N-(3-二乙基氨丙基)-脂肪酸酰胺浮选  

Froth Flotation of Diaspore with N-(3-Diethylaminopropyl)-Fatty Amide

作　　者：赵世民[1] 王淀佐[2] 胡岳华[1] 徐竞[1] 

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]中国工程院,北京100038

出　　处：《有色金属》2004年第2期84-87,共4页Nonferrous Metals

基　　金：国家重点基础发展规划项目 (G19990 64 90 1-1)

摘　　要：研究用N -( 3 -二乙基氨丙基 ) -脂肪酸酰胺浮选一水硬铝石。矿浆Zeta电位测定表明 ,一水硬铝石矿浆的等电点(IEP)约为 6 2 ,在等电点附近一水硬铝石的回收率最高 ,达 99 8%以上。碱性条件下 ,一水硬铝石的回收率急剧下降。增加N -( 3 -二乙基氨丙基 ) -脂肪酸酰胺的用量 ,可有效地提高一水硬铝石的回收率。N -( 3 -二乙基氨丙基 ) -脂肪酸酰胺主要通过静电力和氢键的方式吸附在矿粒表面。The flotation behaviour of diaspore by using N-(3-diethylaminopropyl)-fatty amide as a collector is investigated. From the Zeta potential determination, the isoelectric point (IEP) of diaspore pulp is obout 6.2, and the maximum recovery of diaspore, over 99.8% is achieved near the isoelectric point. In the alkaline region, there is a marked drop in the recovery of diaspore. The recovery of diaspore is effectively increased with the increase of the clloctor dosage. The adsorption of the N-(3-diethylaminopropyl)-fatty amide on diaspore surface is mainly by means of electrostatic force and hydrogen bond.

关 键 词：一水硬铝石 脂肪酸酰胺 泡沫浮选 吸附机理 铝土矿 

分 类 号：TD952[矿业工程—选矿] TD923