Process for recovering low-grade fine-grained phosphorus from iron separation tailings and concentrating tailings

A technology for recovering low-grade fine-fraction phosphorus from iron separation tailings and concentrating the iron separation tailings comprises the steps that 1, after the iron separation tailings are concentrated through a first-stage inclined plate, an overflow part of the inclined plate ent...

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Hauptverfasser: HAN GUOYING, ZHANG LIANG, YAN LEICHAO, LU WEITAO, ZHU QING, XING LIZHI, ZHANG ZUOJIN, CAI GUILIANG
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:A technology for recovering low-grade fine-fraction phosphorus from iron separation tailings and concentrating the iron separation tailings comprises the steps that 1, after the iron separation tailings are concentrated through a first-stage inclined plate, an overflow part of the inclined plate enters a second-stage inclined plate to be concentrated, bottom flow of the second-stage inclined plate is fed to a hydrocyclone to be concentrated again, bottom flow of the hydrocyclone enters a flotation process to be subjected to phosphorus separation operation, and bottom flow of the hydrocyclone enters a flotation process; and the overflow of the cyclone returns to the second-stage inclined plate for desliming operation. And 2) firstly mixing the ore sample entering the flotation process with a regulator, an inhibitor and a collecting agent, then intensely stirring, and then carrying out one-time roughing, three-time concentration and one-time scavenging to obtain phosphate concentrate. (3) scavenging tailings an