Novel Condensed Ring Carboxylic Hydroxamic Acid Studied in the Flotation Behavior of Diaspore and Aluminosilicates

A novel collector 2-ethyl-2-hexenoic hydroxamic acid: Flotation performance and adsorption mechanism to ilmenite

“…Commonly, the two O atoms in carbonyl and hydroxyl groups of a hydroxamate molecule bond with metal cation to form a five-membered ring structure. The surface complexes of hydroxamic acid and metal species on mineral surface were also reported [8][9][10][11][12]. As a result, hydroxamic acids such as octyl hydroxamic acid (OHA), benzohydroxamic acid and salicylhydroxamic acid have been widely used as collectors for flotation recovery of metal oxide minerals including copper [13], tin [8], iron [14], tungsten [15], and rare earth minerals [9].…”

N-(6-(hydroxyamino)-6-oxohexyl) decanamide collector: Flotation performance and adsorption mechanism to diaspore

“…Collectors play a crucial role in the flotation process whose implementation depends on the selective adsorption of a collector onto an objective mineral to produce a hydrophobic surface for attaching bubble. Various surfactants have been evaluated to remove aluminosilicate minerals from diasporic ores by flotation process in recent years [1][2][3][4][5][6][7][8][9][10][11][12][13]. Among them, oleic acid has been proved to be an effective collector for flotation desilication, and mono-hydroxycarbamoyl surfactants such as octyl hydroxamic acid exhibited better flotation performances for recovery of diaspore from bauxite ores contained it [2,4].…”

Synthesis of 3-hydroxy-2-naphthyl hydroxamic acid collector: flotation performance and adsorption mechanism on bastnaesite

“…The two O atoms in the carbonyl and hydroxyl groups of a hydroxamate molecule bond with a metal cation to form a fivemembered ring structure (Chelgani et al, 2015). Researchers have reported on the surface complexes of hydroxamic acid and metal species on the mineral surfaces (Jiang et al, 2010;Wu and Zhu, 2006). This research has led to the wide use of hydroxamic acids such as octyl hydroxamic acid and salicylhydroxamic acid as collectors for flotation recovery of metal oxide minerals, including copper (Lee, 1998), tin (Sreenivas and Padmanabhan, 2002) and rare earth minerals (Zhou et al, 2015a;Jordens et al, 2014).…”

“…Hydroxamic acids (R-CO-NHOH) are much weaker acids than the corresponding carboxylic acids with identical carbon chains (Jiang et al, 2010;Buglyo et al, 2007;Wu and Zhu, 2006;Herrera, 2003). However, hydroxamic acids are better at selecting chelating metal ions (Wang, Liu, and Miller, 2008;Griffith et al, 2011).…”