矿产综合利用Issue(3)：105-110,6.DOI:10.3969/j.issn.1000-6532.2017.03.022
界面润湿性调控对氧化煤浮选的促进作用
Promoting Effects of Wettability Modification on Oxidized Coal Flotation
摘要
Abstract
The decreasing of surface hydrophobicity duo to coal oxidation leads to flotability significantly reduced.The impact of surfactant hydrophilic hydrophilic end on lignite surface polar oxygen-containing groups groups have profound effects on coal surface wettability changes,which could bring coal surface wettability alteration from hydro philicity to hydrophobicity.Surfactant cetyltrimethyl amonium bromide (CTAB)was chosen and its influence on the surface wettability of lignite were investigated.The adsorption characteristics of CTAB adsorbed on oxidized coal surface and the changes of wettability of were analyzed using FTIR and wettability heat measurement.The obtained results show that the oxidized coal adsorbed CTAB leads to hydrophobicity increasing and flotability was effectively promoted.Moreover,flotability increased with CTAB adsorbing capacity.It was also observed that the adsorption of surfactant on coal could result in mineral matter wettability alteration from hydrophobicity to hydrophilicity,which bought clean coal ash increasing drastically.It was proved that the hydrothermal pretreatment before flotation operation and using inhibitor respectively lead to clean coal ash decreasing efficiently.关键词
氧化煤/CTAB/润湿性/浮选/抑制剂Key words
Oxidized coal/CTAB/Wettability/Flotation/Inhibitor分类
矿业与冶金引用本文复制引用
栗褒,刘晓阳,刘生玉..界面润湿性调控对氧化煤浮选的促进作用[J].矿产综合利用,2017,(3):105-110,6.基金项目
国家自然科学基金资助项目(21376161). （21376161）
