What are the chemical properties of butyl xanthate?

Butyl xanthate is a commonly used collector for flotation sulfide deposits (galena, chalcopyrite, sphalerite, pyrite, etc.). The butyl xanthate charge increases with the addition of the number of carbon atoms in the molecule, and its solubility is reduced. It has a catching effect on all heavy metal sulfide ore. For non-sulfurized minerals (oxides, carbonates, sulfates, silicates, etc.), high-grade xanthate should be used to achieve good harvesting results.

The chemical composition of butyl xanthate is a hydrocarbyl dithiocarbonate. The molecular formula is ROCSSMe, in which R is a CnH2n+1 hydrocarbon group, and Me is a metal sodium or potassium.

The butyl xanthate is produced by the three materials of alcohol, caustic soda and carbon disulfide at a certain temperature (preferably 15 to 35 ° C). According to the different alcohols used in the preparation of butyl xanthate (ethanol, butanol, pentanol, etc.), the butyl xanthate obtained is respectively ethylxanthate and amylxanthin. The reaction is: C2H5OH + NaOH = C2H5ONa + H2O C2H5Ona + CS2 = C2H5OCSSNa butyl yellow drug is a solid yellow powder at room temperature, with irritating odor, toxic; xanthate is easy to absorb moisture, unstable, heated, damp, encounter Acid-base decomposition should be stored in a cool, dry place; xanthate is a combustible substance, easy to incinerate and burn, and fireproofing and fire extinguishers (such as sand, water and foam fire extinguishers, etc.) should be installed in the vicinity of the butyl yellow drug workshop. Fire for emergency treatment;

Butylxanthine is easily soluble in water, dissociated into xanthate anion and light metal cation in dissolved water; xanthate anion forms corresponding heavy metal xanthate deposit in aqueous solution in the presence of metal cations, which has a trapping power; xanthate Ionic hydrolysis produces xanthic acid, which is a weak acid, unstable, and easily decomposed into carbon disulfide and alcohol which do not have a collecting effect.