Comprehensive recovery method for complicated materials containing arsenic and valuable metal slag dust

The invention relates to a comprehensive recovery method for complicated materials containing arsenic and valuable metal slag dust, which comprises the following steps of: treating various arsenic-containing materials into a primary rotary kiln to volatilize the arsenic, and treating the materials into a secondary rotary kiln for purifying the arsenic to produce arsenic products containing 99.5 percent of As2O3; carrying out reduction melting on primary and secondary rotary kiln slag through a blast volatilization furnace, returning produced high-arsenic smoke dust back into the primary rotary kiln for treatment, using furnace slag as cement plant raw materials and zinc raw materials for carrying out resource treatment after the forced reduction arsenic removal and zinc volatilization through a fuming furnace, carrying out alkaline oxidation refining treatment on produced arsenic containing alloy, recovering lead, antimony, bismuth, silver and the like in the arsenic removal alloy according to the conventional method, carrying out crushing alkali dissolution and filtering on refined alkali slag with 5 to 15 percent of As2O3 and about 5 to 15 percent of valuable metal content, returning slag back into the blast volatilization furnace to be treated, introducing CO2 into tin and arsenic containing solution for precipitating the arsenic, using filtered stannic oxide as high-tin raw materials to be sold, carrying out arsenic precipitating and filtering through adding Ca(OH)2 into arsenic containing filter liquor, returning calcium arsenate slag back into the primary rotary kilnfor treatment after the filtration, and evaporating and concentrating the rest alkali liquid for recovering the alkali. The whole technical process of the method provided by the invention is simple and smooth, economic benefits and environment benefits are very obvious.