Enhancing sustainability in phosphate ore processing:Performance of frying oil as alternative flotation collector for carbonate removal  

作　　者：Asmae El-bahi Yassine Taha Yassine Ait-Khouia Abdellatif Elghali Mostafa Benzaazoua 

机构地区：[1]Geology&Sustainable Mining Institute(GSMI),Mohammed VI Polytechnic University,Ben Guerir 43150,Morocco

出　　处：《International Journal of Mining Science and Technology》2024年第4期557-571,共15页矿业科学技术学报（英文版）

基　　金：financially supported through the research program between OCP Group and UM6P under the specific agreement AS34-flotation project

摘　　要：Recycling waste frying oils for the synthesis of flotation reagents presents a promising avenue for sustainable waste management.Moreover,it offers a cost-effective solution for crafting a specialized collector designed to efficiently remove carbonates and enhance phosphate enrichment in froth flotation processes.This study focuses on the synthesis of an anionic collector using the saponification reaction of a frying oil sample,subsequently applied to the flotation of calcite and dolomite.To elucidate the adsorption mechanisms of the frying oil collector(FrOC)and sodium oleate,a reference collector,on fluorapatite,calcite,dolomite,and quartz surfaces,comprehensive experiments were conducted,including zeta potential measurements and Fourier transform infrared spectroscopy.Results revealed diverse adsorption affinities of the molecules towards these minerals.To assess the practical performance of the collector,flotation tests were conducted using a natural phosphate ore mixture,employing a BoxBehnken experimental design.Notably,under optimized conditions(pH 9,1000 g/t of FrOC,3.5 min of conditioning,and 6 min of flotation),FrOC exhibited excellent performance,with calcite and dolomite recoveries exceeding 80%,while apatite recovery in the concentrate fraction remained below 10%.This work exemplifies both circular economy practices and the distinctive approach to sustainable mineral processing.

关 键 词：Frying oils recycling Phosphate beneficiation Flotation separation Green surfactants SUSTAINABILITY 

分 类 号：TD97[矿业工程—选矿] TD923.1