Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A multi-component recovery and beneficiation method of iron tailings with associated rare earth minerals

A technology for iron tailings and rare earths, applied in chemical instruments and methods, solid separation, wet separation, etc., to reduce the content of harmful impurities, increase the grade and recovery rate, and improve the comprehensive utilization rate

Active Publication Date: 2020-03-10
NORTHEASTERN UNIV LIAONING
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention aims to solve the problem of comprehensive utilization of iron tailings associated rare earth minerals, to fully utilize useful resources in iron tailings associated rare earth minerals and to improve the recovery rate of useful minerals in existing processes. Comprehensive recovery of valence elements provides a new path

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A multi-component recovery and beneficiation method of iron tailings with associated rare earth minerals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this example, the tailings in the Baiyun Obo tailings pond are used as raw materials, in which the grade of iron (TFe) is 15.62%, and the grade of fluorite (CaF 2 ) grade is 19.30%, rare earth (REO) grade is 6.87%. Utilize the method of the present invention to finally obtain the fluorite concentrate with a fluorite grade of 95.26% and a recovery rate of 82.23%; the rare earth concentrate with a rare earth grade of 66.54% and a recovery rate of 83.12%; the iron grade of 64.89% and a recovery rate of 87.65% % iron ore concentrate; Concretely comprises the following steps:

[0039] (1) Slurry the tailings in the Baiyun Obo tailings pond and perform mixed flotation operation, add water glass with inhibitor 0.50kg / t, sodium oleate with collector 0.35kg / t, adjuster 0.50kg / t t of sodium carbonate to obtain mixed flotation concentrates and mixed flotation tailings, respectively.

[0040] (2) The mixed flotation concentrate obtained in step (1) is fed into a strong magneti...

Embodiment 2

[0047] In this example, the tailings in the Baiyun Obo tailings pond are used as raw materials, in which the grade of iron (TFe) is 13.47%, and the grade of fluorite (CaF 2 ) grade is 22.45%, rare earth (REO) grade is 6.56%. Utilize the method of the present invention to finally obtain the fluorite concentrate with a fluorite grade of 96.46% and a recovery rate of 80.26%; the rare earth concentrate with a rare earth grade of 63.58% and a recovery rate of 87.26%; the iron grade of 63.69% and a recovery rate of 86.76% % iron ore concentrate; Concretely comprises the following steps:

[0048] (1) Slurry the tailings in the Baiyun Obo tailings pond and perform mixed flotation operation, add water glass with inhibitor 0.45kg / t, sodium oleate with collector 0.45kg / t, adjuster 0.40kg / t t of sodium carbonate to obtain mixed flotation concentrates and mixed flotation tailings, respectively.

[0049] (2) The mixed flotation concentrate obtained in step (1) is fed into a strong magneti...

Embodiment 3

[0056] In this example, the tailings in the Baiyun Obo tailings pond are used as raw materials, in which the grade of iron (TFe) is 15.62%, and the grade of fluorite (CaF 2 ) grade is 19.30%, rare earth (REO) grade is 6.87%. Utilize the method of the present invention to finally obtain the fluorite concentrate with a fluorite grade of 95.26% and a recovery rate of 82.23%; the rare earth concentrate with a rare earth grade of 66.54% and a recovery rate of 83.12%; the iron grade of 64.89% and a recovery rate of 87.65% % iron ore concentrate; Concretely comprises the following steps:

[0057] (1) Slurry the tailings in the Baiyun Obo tailings pond and perform mixed flotation operation, add inhibitor 0.50kg / t water glass, collector 0.35kg / t sodium oleate, adjuster 0.50kg / t carbonic acid Sodium, respectively to obtain mixed flotation concentrate and mixed flotation tailings.

[0058] (2) The mixed flotation concentrate obtained in step (1) is fed into a strong magnetic separator,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a multi-component recovery and beneficiation method for iron tailings associated with rare earth minerals, and belongs to the fields of mineral processing engineering and comprehensive resource recovery and utilization. The method is as follows: carrying out mixed flotation of rare earth minerals and fluorite minerals on iron tailings associated with rare earth minerals to obtain mixed flotation concentrate and mixed flotation tailings; subjecting the mixed flotation concentrate to a magnetic field with a strength of 0.4 to 1.0T Carry out strong magnetic separation to obtain strong magnetic separation concentrate and strong magnetic separation tailings; conduct rare earth flotation on the strong magnetic separation concentrate to obtain rare earth flotation concentrate and rare earth flotation tailings; perform fluorescent treatment on the strong magnetic separation tailings. Stone flotation is performed to obtain fluorite flotation concentrate and fluorite flotation tailings; the mixed flotation tailings are dehydrated and dried and then roasted in a reducing atmosphere, and the minerals obtained after roasting are subjected to weak magnetic separation at 0.1~0.3T , obtain weak magnetic concentrate and weak magnetic tailings. The method of the present invention is used to finally obtain three concentrates of rare earth concentrate, fluorite concentrate and iron ore concentrate, as well as niobium-rich slag, thereby improving the comprehensive utilization rate of iron tailings associated with rare earth minerals.

Description

technical field [0001] The invention relates to a multi-component recovery and dressing method for iron tailings of associated rare earth minerals, which belongs to the field of mineral processing engineering and resource comprehensive recovery and utilization. Background technique [0002] The representative of iron ore with associated rare earth minerals is Baiyan Obo Iron Mine, which is rich in rare earth, iron, niobium, fluorite and other minerals. Previously, the utilization of Baiyan Obo Iron Mine was limited to the recovery of iron and some rare earths. Therefore, there are still considerable reserves of useful minerals such as iron, rare earths, and fluorspar in the tailings pond. The recovery rate of other minerals is not ideal, and a large amount of useful minerals continue to be piled into the tailings pond, which is not only a waste of resources but also aggravates the damage to the environment. [0003] The content of rare earth minerals in the Baiyan Obo taili...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00C22B1/10
CPCB03B7/00C22B1/10
Inventor 韩跃新李文博单彦李艳军
Owner NORTHEASTERN UNIV LIAONING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com