Improved powdery gold leaching agent and preparation method thereof

The invention discloses an improved powdery gold leaching agent which comprises sulfurized urea, sodium carbonate, sodium sulfate, a catalyst, an anti-scaling agent and a dispersing agent. The catalyst is one or a combination of two of activated carbon and an iron catalyst, the anti-scaling agent is prepared by mixing sodium tetrapolyphosphate and sodium citrate, and the dispersing agent is sodium lignin sulfonate. The preparation method of the leaching agent comprises the steps that firstly, sulfurized urea and sodium carbonate are rapidly heated to prepare an intermediate product, generation of harmful gas is reduced, then the intermediate product reacts with other agents through step-by-step heating, product caking or decomposition fission caused by too large temperature change is avoided, and the overall product performance is improved. The gold beneficiation agent is low in energy consumption in the preparation process, small in product toxicity and suitable for various gold leaching processes. 本发明公开一种改良