摘要
以十二胺(DDA)为捕收剂,通过单矿物浮选试验对硫化钠存在时菱锌矿的可浮性及正辛醇对菱锌矿可浮性的影响进行了初步研究。结果表明,硫化钠对菱锌矿的活化作用主要通过HS-吸附在菱锌矿表面,降低菱锌矿表面电位实现;当pH值在9.5~11.5范围内,DDA对经硫化钠活化后的菱锌矿具较好的捕收性;正辛醇对经硫化钠活化后的菱锌矿无捕收性,但其能够强化DDA对经硫化钠活化后的菱锌矿的捕收能力,当正辛醇以40%的物质的量取代DDA组成胺醇复合捕收剂时,使用复合捕收剂浮选可获得与单独使用DDA浮选相同的效果;红外光谱研究表明,硫化钠、正辛醇、DDA与菱锌矿表面发生物理吸附。
The monomineral flotation test which for investigate the flotability of smithsonite and the influence of n-oetanol on the flotability of smithsonite have been conducted using dodecylamine(DDA) as collector while sodium sulfide existed. The results showed that the activation of sodium sulfide to tbe smithsonite due to the HS^- ion adsorbed on the smithsonite's surface and lead to the zeta potential drop. Smithsonite activated by sodium sulfide can be collected well by DDA while the pH of pulp located in 9.5 to 11.5. Though smithsonite activated by sodium sulfide can1 be collected by collected ability of DDA to smithsonite active by sodium sulfide can be enhanced obviously by n-octanol. The effect was achieved when using the combination collector which 40% mole proportion of DDA was replaced by n-octanol, compare with using DDA alone did. FTIR result showed that it is the physisorption of the interaction among sodium sulfide, DDA and n-octanol with smithsonite's surface.
出处
《金属矿山》
CAS
北大核心
2011年第11期99-102,110,共5页
Metal Mine
基金
"十一五"国家科技支撑计划项目(编号:2008BAB34B01)
关键词
菱锌矿
硫化钠
十二胺
正辛醇
Smithsonite
Sodium sulfide
Dodecylamine
N-octanol