The invention discloses a method for separating ferrum and
vanadium in
vanadium pickle liquor. The method comprises the following steps that Na2SO3 is added into the
vanadium pickle liquor, stirring is conducted, and a reduction reaction is conducted at the temperature of 30-75 DEG C for 20-120 min, so that reduction liquor is obtained; the pH value of the reduction liquor is regulated to 1.0-2.5 by adding alkali liquor, so that
emulsion is obtained;
solid-liquid separation is conducted on the
emulsion, so that an extracted
stock solution and
slag are obtained; a mixed extraction agent and the extracted
stock solution are mixed according to the volume ratio of (0.2-1):1, and stirring is conducted, so that a
mixed phase is obtained; and standing
phase splitting is conducted on the
mixed phase, so that a vanadium-carrying organic phase and ferrum-containing
raffinate are obtained, wherein the mixed extraction agent is prepared by mixing an acid phosphorous extraction agent, an alkaline amine extraction agent and sulfonated
kerosene. According to the method for separating the ferrum and the vanadium in the vanadium pickle liquor, different extraction agents are selected to form a mixed
system, and through the characteristics of the different extraction agents, the mixed
system can have better extraction capacity and selectivity. The technological process is simple, agent consumption is low, and the ferrum and the vanadium in the vanadium pickle liquor can be separated efficiently.