Red fine gold ore flotation step rougher tailing method. The invention relates to a fine-grained rutile ore flotation flotation selective tailing technology, belonging to the technical field of mineral processing engineering. The invention firstly utilizes aluminum sulfate to inhibit the characteristics of rutile and different degrees of activated silicate minerals, and uses sodium oleate as a collector to reverse flotation of rutile to achieve effective desilting during reverse flotation; reuse of sodium fluorosilicate and carboxy Synergistic action of methylcellulose and residual aluminum sulfate in the pulp, combined to inhibit gangue minerals, using lead nitrate ( or lead acetate ) as rutile activator, sodium hydroxycitrate and benzyl phthalic acid ( or styrenephosphonic acid ) a combination of flotation collector rutile, i.e., "first reverse flotation inhibiting rutile, rutile reactivation flotation" and "flotation step" to achieve fine rutile rougher tailing. The method has high rutile enrichment ratio, high recovery rate and thorough tailing, which can greatly reduce the ore beneficiation cost of rutile.
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