Butyl-Xanthate Adsorption on the Surface of Sulfide Minerals under Conditions of their Preliminary Treatment with Water Electrolysis Products according to Atomic-Force Microscopy and Infrared Fourier Spectroscopy Data

Colloidal and Immobilized Nanoparticles of Lead Xanthates

“…Heavy metal salts of xantic acid (the O-ester of carbonodithionic acid) M­(SSCOR) n , where M is a metal cation, R is an alkyl group, and n = 1, 2, or 3, are utilized in the production of cellulose, rubber, pesticides, lubricants, and so forth, for example. − Xanthates of lead and transition metals are prospective precursors to nanoparticles and films of metal sulfides, allowing a low-temperature, between 100 and 200 °C, in situ preparation of nanoparticulate sulfides within the polymer matrix for photovoltaics, sensors, and so forth. − Xanthates have been proposed as capping ligands in the synthesis of metal nanoparticles and self-assembled monolayers alternative to thiols. − Xanthates of alkali metals are widely used for the precipitation and separation of heavy metals in mineral processing, hydrometallurgy, water treatment, analytical practice, ,, and, first of all, as collectors in froth flotation of metal sulfide ores . Water-insoluble xanthates of lead, copper, and some other metals likely emerge as colloidal or surface species in the reaction between the xanthate collector and aqueous cations in the flotation slurries, and their interaction with mineral surfaces is important for understanding the flotation mechanisms and performance. − The ultrafine xanthate entities are also possible carriers of lead and heavy metals in wastewaters and natural surface waters, along with metal sulfide colloids − or as their precursors. It was demonstrated , that the yield of sulfide mineral ultrafines in the mineral processing is not negligible, and their total amounts can be very significant because of large volumes of the ores; moreover, the concentrations of Pb-bearing colloids in environmental waters can be higher than that of aqueous lead ions. − …”

Molecular modelling and synthesis of a new collector O-butyl S-(1-chloroethyl)carbonodithioate for copper sulfide ore and its flotation behavior

“…As shown in Fig. 9 , after the interaction of butyl xanthate and pyrite, new absorption peaks appeared at 1083.17 cm −1 and 1032.71 cm −1 , the absorption peak at 1083.17 cm −1 and 1032.71 cm −1 was the valence oscillations of the C S band, 25 which proved that chemical adsorption of butyl xanthate occurred on the surface of pyrite. However, there was no obvious peak change before and after the interaction of GC-I and pyrite, indicating that physical adsorption between GC-I and pyrite occurred.…”

“…3 , the absorption peak at 1070.45 cm −1 was C S asymmetric stretching vibration absorption peak. 25 After interaction with GC-I, the absorption peak at 3459.61 cm −1 was obviously strengthened, which proved that chemical adsorption of GC-I occurred on the surface of chalcopyrite. After the interaction of butyl xanthate and chalcopyrite, a weaker peaks appeared at 867.82 cm −1 was due to C–O stretching were prominent.…”