Abstract
In order to alleviate the pressure on the supply of lithium resources,this research proposes the use of binary/ternary collectors with high selectivity and collecting ability to enhance the flotation purification of low-grade zinnwaldite ore.The binary collector is a mixture of dodecylamine polyoxyethylene ether and DL-2-octanol.A binary collector is added first,followed by sodium oleate,known as a ternary collec-tor.Under acidic conditions,the recovery of Li2O in the concentrate was increased by 8.26％with the bin-ary collector and 13.70％with the ternary collector,compared to the dodecylamine polyoxyethylene ether.The binary collector enhanced the dispersibility of the single collector,while co-adsorption strengthened the hydrophobic nature of the zinnwaldite surface.Consequently,zinnwaldite particles,after the application of binary collector,displayed inter-particle flocculation and attachment to bubbles within 60×10-9 m compared to other particles.Ternary collector exhibited the capacity to lower critical micelle concentration and surface tension,subsequently inducing a denser and thicker hydrophobic layer through electrostatic forces,hydrophobic interactions,and chemical reactions.The objective of this research is to facilitate the recovery of lithium resources from low-grade ores in order to meet the needs of sustainable development.
基金项目
National Key Research and Development Program of China(No.2023YFC2811403)
NETL
NSTL
万方数据