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Beneficiation method for pegmatite type lithium polymetallic ore

A technology of polymetallic ore and beneficiation methods, applied in the direction of solid separation, etc., can solve the problems of low comprehensive resource utilization rate and single product structure, and achieve the effect of increasing the difference in floatability, efficient separation, and realizing no tailings discharge

Active Publication Date: 2021-06-15
INST OF RESOURCES COMPREHENSIVE UTILIZATION GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome defects or deficiencies such as single product structure and low comprehensive resource utilization rate in the prior art lithium polymetallic ore separation method, and provide a method for comprehensive utilization of lithium polymetallic ore

Method used

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  • Beneficiation method for pegmatite type lithium polymetallic ore
  • Beneficiation method for pegmatite type lithium polymetallic ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Schematic diagram of the comprehensive recovery process of lithium polymetallic ore figure 1 As shown, the specific process is:

[0043] S1: Grind the raw ore to -0.30mm;

[0044]S2: Gravity separation-magnetic separation: use spiral chute for rough separation, Nelson centrifugal separator for concentration (gravity acceleration 50G) to obtain mixed concentrate of tantalum, niobium and tin, gravity separation tailings and slime; then use weak magnetic separator Do weak magnetic separation on tantalum, niobium and tin mixed concentrate (background magnetic field strength is 0.15T) to obtain iron-containing impurities and weak magnetic tailings, and finally use high gradient strong magnetic separator (background magnetic field strength 0.80T) to separate weak magnetic tailings High-gradient strong magnetic separation to obtain tantalum-niobium concentrate and tin concentrate; 2 o 5 Grade 18.86%, recovery rate 62.41%, Nb 2 o 5 Grade 38.59%, recovery rate 64.48%, tin c...

Embodiment 2

[0049] The raw ore sample that present embodiment uses is with embodiment 1. The specific comprehensive recovery process of lithium polymetallic ore is the same as that in Example 1, except that the gravity acceleration of step S2 Nelson centrifugal concentrator is 45G, and the background scene of high-gradient strong magnetic separation is 0.90T, and finally tantalum-niobium concentrate Ta 2 o 5 Grade 17.95%, recovery rate 63.01%, Nb 2 o 5 Grade 37.81%, recovery rate 65.18% and tin concentrate Sn grade 46.37%, recovery rate 72.79%; Steps S3, S4 and S5 are shown in Table 1 for the medicaments and their dosages; the final Rb 2 Rubidium-containing mica concentrate and pumice tailings with an O grade of 0.66% and a recovery rate of 27.85%, as well as Li 2 Spodumene concentrate and silica sand mixture with O grade of 5.70% and recovery rate of 85.38%.

Embodiment 3

[0051] The raw ore sample that this example uses is with example 1. The specific comprehensive recovery process of lithium polymetallic ore is the same as in Example 1, except that the background scene of step S2 high-gradient strong magnetic separation is 1.0T, and finally tantalum-niobium concentrate Ta 2 o 5 Grade 19.51%, Recovery 63.05%, Nb 2 o 5 Grade 39.99%, recovery rate 65.17% and tin concentrate Sn grade 48.94%, recovery rate 71.35%; Steps S3, S4 and S5 are shown in Table 1 for the medicaments and their dosages; the final Rb 2 Rubidium-containing mica concentrate and pumice tailings with O grade of 0.73% and recovery rate of 28.26%, and Li 2 Spodumene concentrate and silica sand mixture with O grade of 6.02% and recovery rate of 83.28%.

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Abstract

The invention relates to a beneficiation method for pegmatite type lithium polymetallic ore. The beneficiation method comprises the steps of first-stage ore grinding, screening, reselection, magnetic separation, second-stage ore grinding, size mixing, flotation of rubidium-containing mica, flotation of spodumene and the like. The tantalum-niobium concentrate, the tin concentrate, the mica concentrate, the spodumene concentrate and the silica sand mixture are obtained through the gravity-magnetism-flotation combined technology, comprehensive recovery of tantalum, niobium, tin, rubidium, lithium, silicon, aluminum and other elements is sequentially achieved, and the method has the advantages of being simple and convenient in separation technology, good in separation effect, high in resource utilization rate and the like.

Description

technical field [0001] The invention relates to the technical field of beneficiation, in particular to a beneficiation method of pegmatite lithium polymetallic ore. [0002] technical background [0003] Lithium is widely used in high-tech industries such as aerospace, nuclear energy and new energy vehicles, and has become a strategic key metal resource in my country. my country will still mainly rely on extracting lithium from lithium ore resources, and pegmatite lithium ore has become the most economical and important source of lithium ore. In addition to valuable minerals such as spodumene, pegmatite lithium polymetallic ores generally contain valuable elements such as rubidium, tantalum, niobium and tin. The comprehensive recovery of these associated elements can increase the development value of resources. [0004] There are a large number of gangue minerals such as feldspar, mica and quartz in pegmatite lithium polymetallic ore. The useful minerals spodumene, feldspar ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00
CPCB03B9/00Y02W30/52
Inventor 汪泰胡真王成行李汉文邹坚坚李沛伦姚艳清杨凯志李强付华
Owner INST OF RESOURCES COMPREHENSIVE UTILIZATION GUANGDONG ACAD OF SCI
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