摘要
研究了不同种类分散剂对微细粒石英、赤铁矿、磷灰石及其混合体的分散效果，探讨了分散剂的作用方式。研究结果显示，矿粒悬浮体中一定条件下凝聚或（和）互凝几乎不可避免，ＡＴ－８０２等分散剂对所研究的体系而言。分散效果顺序为ＳＨＰ＞ＡＴ－８０２＞ＳＴＰＰ＞ＳＳ；分散剂的作用方式的实质是分散剂在矿粒表面的吸附，增强矿粒间的双电层排斥作用、水化膜排斥作用以及位阻排斥作用，减小范德华吸引作用。
The dispersion performances of some dispersants in fine mineral suspension (quartz, hematite, phosphate or their mixture in aqueous solution) were investigated, and the action of those dispersants was discussed. Experimental results showed that coagulation or/and heterocoagulation were almost unavoidable in the suspension of fine mineral particles, dispersion ability of the dispersants studied was in the order of SHP>AT-802>STPP>SS. The action of the dispersants is to increase the repulsion interactions of electrical double layer, hydration shell and steric hindrance, and to decrease the Van der Waals attraction among particles.
出处
《有色金属》
CSCD
2000年第3期37-41,共5页
Nonferrous Metals
基金
国家自然科学基金!(59704005)
