|Cite this article as:|
|Wenbiao Liu, Wenxuan Huang, Feng Rao, Zhanglei Zhu, Yongming Zheng, and Shuming Wen, Utilization of DTAB as a collector for reverse flotation separation of quartz from fluorapatite, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2321-3|
Reverse flotation desilication has been an indispensable step for obtaining high-grade fluorapatite. In this work, Dodecyl Trimethyl Ammonium Bromide (DTAB) was recommended as an efficient collector for the reverse flotation separation of quartz from fluorapatite. Its collectivity for quartz and selectivity for fluorapatite were also compared with the figures corresponding to the conventional collector dodecylamine hydrochloride (DAC) via micro-flotation experiments. The adsorption behaviors of both DTAB and DAC on minerals were systematically investigated with surface chemical analyses such as contact angle determination, zeta potential detection, and adsorption density measurement. It was revealed that compared to DAC, DTAB displayed similar and strong collectivity for quartz, while it showed a better selectivity (or worse collectivity) for fluorapatite, resulting in a high-efficiency for the separation of the two minerals. Surface chemical analyses showed that the adsorption ability of DTAB on quartz surface was as strong as DAC, while the adsorption amount of DTAB on fluorapatite surface was much lower than that of DAC, which associated to the flotation performance well. During the floatation separation of the actual ore, 8% fluorapatite with higher grade can be obtained by using DTAB in contrast to DAC. Therefore, DTAB is a promising collector to the high-efficiency purification and sustainable utilization of the valuable fluorapatite recourses.