Beneficiation desilication enrichment method for fine-particle hematite

The invention relates to a beneficiation desilication enrichment method for fine-particle hematite. The beneficiation desilication enrichment method comprises the steps of levigating the fine-particle hematite, carrying out graded desliming for two times through adopting a cyclone continuous centrifugal separator under certain pulp concentration, and removing high silicon fine silt in advance to obtain fine-particle hematite rough concentrate; and after regulating the rough concentrate to certain pulp concentration, carrying out rough floatation for one time, scavenging for one time, fine flotation for three times and fine scavenging for one time through adopting sodium carbonate as a dispersing agent, water glass and sodium fluosilicate as inhibitors of silicon-containing gangue minerals, lead acetate as an activator of iron minerals, MOH as a collecting agent of hematite and 2#oil as a foaming agent, wherein pulp obtained after scavenging and fine scavenging is adopted as tailings to be removed, and foams o