A process for recovering apatite from iron tailings flotation

CN119702255BActive Publication Date: 2026-05-26ANHUI MAGANG LUOHE MINING CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI MAGANG LUOHE MINING CO LTD
Filing Date
2024-12-30
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Traditional flotation processes for apatite are difficult to effectively recover and separate apatite from iron ore tailings, resulting in poor quality, low recovery rates, and weak economic viability.

Method used

A combined magnetic-gravity-flotation process is adopted, including high-gradient magnetic separation, sluice box removal of large gangue particles, sulfide ore flotation and gypsum flotation, apatite collector flotation and ultrafine grinding and dissociation, combined with a novel combination of collectors and inhibitors, to carry out closed-circuit cleaning of apatite.

Benefits of technology

It improves the grade and yield of apatite concentrate, reduces the amount of reagents used, and achieves economically feasible apatite recovery, solving the problems of low apatite recovery rate and difficulty in impurity separation in traditional processes.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a flotation process for recovering apatite from iron ore tailings, belonging to the field of mineral processing technology. It includes the following steps: 1. High-gradient magnetic separation is applied to the iron ore tailings to recover and remove magnetic iron-bearing minerals. The removed iron-bearing minerals are returned to the main iron ore processing flow. The tailings enter a sluice to remove large gangue minerals, and then enter a thickener for concentration. 2. The underflow product from the thickener is subjected to sulfide mineral flotation and gypsum flotation to remove easily interfering impurities, followed by apatite collecting direct flotation to obtain apatite concentrate. 3. The apatite concentrate is subjected to ultrafine grinding for liberation and selective mudification of impurities, followed by closed-circuit apatite cleaning to obtain a qualified apatite concentrate product. This invention can achieve good recovery and utilization of apatite from iron ore tailings and has great economic feasibility.
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