Cyanogens-contained tailing pulp processing method

The invention discloses a cyanogens-contained tailing pulp processing method. According to the method, a composite catalytic oxidation system formed by organically combining sodium pyrosulfite, hydrogen peroxide, copper sulfate, ferrous sulfate, lime and other medicament is adopted; firstly, the copper sulfate and the ferrous sulfate are added to the cyanogens-contained tailing pulp, and under the stirring action, cupric ions and ferrous ions are mixed and adsorb fine particles in the cyanogens-contained tailing pulp; secondly, the sodium pyrosulfite and the sodium pyrosulfite are added to the cyanogens-contained tailing pulp, and under the catalytic action of the cupric ions and the ferric ions, cyanide in the cyanogens-contained tailing pulp is oxidized; thirdly, the hydrogen peroxide is added to the cyanogens-contained tailing pulp, the resident cyanide is oxidized under the catalytic action of the ferrous ions; lastly, lime milk is added to the cyanogens-contained tailing pulp, and the pH value of the cyanogens-contained tailing pulp is adjusted to 6 or more. The method has the advantages that the technological process is simple, the treatment effect is good, running is stable, operation is safe, and industrial application is easy to achieve. The method has wide application prospects.