The invention discloses a preparation method for a silver extraction material. The preparation method comprises the following two steps: selecting specific fibers, using an organic
alcohol type compound as a
solvent, adding a balanced amount of aminopyridine
reagent, and generating a reaction at a certain temperature; separating the fibers after reaction, cleaning the fibers by using a balanced amount of
distilled water, and
drying the fibers in an extraction manner; taking the dried fibers, utilizing a chlorinated
alkane type
reagent as a
solvent, adding a balanced amount of
hydroxylamine type
reagent, and enabling reaction at a certain temperature; separating the fibers after the reaction, cleaning the fibers by using the
distilled water, treating the fibers by using HCl, cleaning the fibers again by using the
distilled water, and then
drying in the extraction manner. According to the preparation method for the silver extraction material, an
acrylonitrile polymer is taken as a framework, and an
alcohol type reagent is taken as a
solvent, so that amino modification is performed; and then the chlorinated
alkane type reagent is utilized as a solvent, thereby
hydroxylamine modification is performed; therefore, high-efficiency
ion exchange
fiber materials are prepared. The preparation method provided by the invention is simple to operate and low in cost, and can effectively solve silver recycle and utilization problems.