Gold extracting method with activated carbons

The invention discloses a gold extracting method with activated carbons. The method comprises the following steps: (1) the activated carbons are put in an absorption column after being dispersed in water; (2) cyanided gold-contained precious liquid is fed into the absorption column from the column top for circular absorption; (3) the gold content in post-absorption liquid sent out from a liquid outlet in the column bottom is detected; and after the gold content in the post-absorption liquid is lower than 0.03 mg/L, the post-absorption liquid is replaced with fresh cyanided gold-contained precious liquid for continuous circular absorption; (4) when the gold content in the post-absorption liquid is equal to the gold content in solution entering the carbon column, the absorption is finished; and (5) after clear water is filled from the column top to wash the absorption column, desorption solution is filled from the column bottom to perform the circular desorption. The method performs the absorption and the desorption in one carbon column, so that the technological process is simplified, and the equipment cost is saved; and solution passes through carbon layers, so that intense friction between carbons and between the carbons and the column wall is not generated, and the carbon wear is little.