What is ethyl xanthate used for?
Potassium ethyl xanthate is used in the mining industry as flotation agent for extraction of the ores of copper, nickel, and silver. The method exploits the affinity of these “soft” metals for the organosulfur ligand. Potassium xanthate is a useful reagent for preparing xanthate esters from alkyl and aryl halides.
What is xanthate made of?
xanthate, any of a class of organic salts formed by treatment of an alcohol with carbon disulfide in the presence of an alkali.
What is xanthate Ester?
Xanthate usually refers to a salt with the formula ROCS − 2M + (R = alkyl; M+ = Na+, K+), thus they are the metal-thioate/O-esters of dithiocarbonate. The name xanthates is derived from Ancient Greek ξανθός xanthos, meaning “yellowish, golden”, and indeed most xanthate salts are yellow.
Is xanthate a collector?
Xanthates are ionising anionic sulfhydryl collectors that are powerful and selective in the flotation of sulphide minerals [8].
Is ethyl xanthate a frothing agent?
In froth floatation process, sodium ethyl xanthate is used as collector.
What are collectors froth flotation?
Collectors are a type of surfactant that increase the natural hydrophobicity of the surface, increasing the separability of the hydrophobic and hydrophilic particles. Collectors either chemically bond via chemisorption to the mineral or adsorb onto the surface via physisorption.
How do you make xanthate?
Cellulose xanthate is prepared by first immersing cellulose pulp in aqueous sodium hydroxide to convert to alkali cellulose. The alkali cellulose is then depolymerized to control the alkali cellulose degree of polymerization prior to xanthation in carbon disulfide.
What is the formula of xanthate?
Sodium ethyl xanthate
| Names | |
|---|---|
| Chemical formula | C3H5NaOS2 |
| Molar mass | 144.18 g·mol−1 |
| Appearance | Pale yellow powder |
| Density | 1.263 g/cm3 |
Why xanthate is used as collector?
Xanthate, as the flotation collector with strong collection effect, is mainly used to enhance the hydrophobicity of the mineral surface to meet the requirements of flotation. Xanthate is commonly used in the flotation process of sulfide minerals.
What is role of sodium ethyl xanthate?
Sodium ethyl xanthate is used in the mining industry as a flotation agent. A closely related potassium ethyl xanthate (KEX) is obtained as the anhydrous salt.
Does sodium ethyl xanthate acts as a collector?
Statement-1: Potassium or sodium ethyl xanthate is used as a collector. These get attached with the particles of the sulphide ore and thus make them water- repellent. Consquently the ore particles pass on into the froth. Collectors are always added in small quantity.
What is froth flotation 12?
Principle: The principle of froth floatation is that sulphide ores are preferentially wetted by pine oil, whereas the gangue particles are wetted by water. Collectors are added to enhance the non-wettability of the mineral particles. Examples of collectors are pine oil, fatty acids and xanthates.