Method for enriching rare earth ore in low-grade apatite

By using a fractional flotation process with zinc phosphate complex activator and specific modifiers in low-grade apatite, the problem of rare earth mineral liberation has been solved, achieving efficient enrichment and environmentally friendly recycling, thereby improving the recovery rate and reducing costs.

CN121534834APending Publication Date: 2026-02-17内蒙古自治区产业技术创新中心(内蒙古自治区科学技术检测实验中心)
0 Cites 0 Cited by

Patent Information

Application Number
CN202511908744.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-17
Publication Date
2026-02-17

AI Technical Summary

Technical Problem

Existing technologies are insufficient for efficiently separating rare earth minerals from low-grade apatite. Traditional enrichment methods suffer from low recovery rates, high costs, and significant environmental risks, and commonly used reagents are prone to causing pollution.

Method used

By using zinc phosphate complex as a modifier and activator, combined with specific modifiers and collectors, and by optimizing the pretreatment and fractional flotation process, efficient dissociation and selective enrichment of rare earth minerals can be achieved.

Benefits of technology

By enriching rare earth minerals in low-grade apatite to a grade of 11.65%–12.55% and achieving a recovery rate of over 85%, production costs are reduced, the risk of lead pollution is eliminated, and green and efficient utilization is realized.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a method for enriching rare earth ore in low-grade apatite. The method comprises the steps of ore pretreatment, graded desliming, three-time graded flotation and four-time rare earth rough concentrate concentration. According to the method, efficient mineral dissociation is achieved by optimizing the pretreatment process, an environment-friendly zinc phosphate complex is adopted to replace lead nitrate to serve as a modification activating agent, the flotation selectivity and the recovery rate of the rare earth minerals are improved by combining the synergistic effect of a specific regulator and a collecting agent, and finally the rare earth minerals with the raw ore grade being 0.15%-0.50% are enriched to the grade being 11.65%-12.55%; and the recovery rate reaches 85% or above, meanwhile, the production cost is reduced, the lead pollution risk is eliminated, and green and efficient utilization of low-grade apatite associated rare earth resources is achieved.
Need to check novelty before this filing date? Find Prior Art