Method for synthesizing environment-friendly cyanate gold leaching agent

The invention discloses a method for preparing a cyanate gold leaching agent, and belongs to the technical field of fine chemical engineering. The method comprises the following steps: mixing and grinding to obtain a mixture precursor under existence of an inhibitor and a catalyst by taking urea, alkali and a ferric salt as raw materials; preheating the mixture precursor to obtain mixed paste, and then fusing and condensing the mixed paste at high temperature to obtain a cyanate molten material; quickly cooling in air, so as to obtain the cyanate gold leaching agent. The cyanate gold leaching agent is non-toxic and free of pollution, environmentally friendly and safe, the traditional gold leaching process of sodium cyanide does not need to change in the gold leaching process, the method is fast in gold leaching speed, the leaching process is not affected by associated metal, and the leaching efficiency is high (the leaching efficiency is 1-2% higher than that of the sodium cyanide gold leaching process). In addition, the production raw material is cheap and available, simple in production process, low in cost, and easy to achieve industrial production, and is a novel beneficiation reagent applicable to dump leaching, pond leaching and carbon leaching production processes of microgranular gold.