The invention discloses a method for extracting silver from a silver-containing
zinc sulfide concentrate and improving quality of the
zinc sulfide concentrate. The method comprises the following steps: mixing the silver-containing
zinc sulfide concentrate with a proper amount of
lead oxide flue dust, a
sodium salt and a
reducing agent and carrying out heating and a complete reaction, wherein silver-containing crude lead and smelt
slag are obtained after completion of the reaction; subjecting the silver-containing crude lead to
electrolysis to obtain electric lead and silver
powder; subjecting the smelt
slag to water leaching; and carrying out liquid-
solid separation after water leaching and subjecting a filtrate to evaporative concentration and
crystallization so as to obtain the
sodium salt which can be returned and reused as a flux, wherein leaching
slag is a desilverized
zinc sulfide concentrate with higher quality. With the method provided by the invention, high efficiency desilverization, dearsenification,
cadmium removal and
fluorine and
chlorine removal of the silver-containing zinc concentrate can be realized, the electric lead, the silver
powder and the high-grade
zinc sulfide concentrate product are produced, and the
sodium salt used as the flux in the reaction is not consumed and can be regenerated through evaporative concentration and
crystallization after the reaction, thereby realizing cyclic usage of the flux. The method has the advantages of short flow, good environment-friendliness, high
economic benefits and the like and is suitable for industrial popularization and application.