Comprehensive recovery process for lithium-containing polymetallic ore with associated fine-grained niobium-tantalum

A polymetallic ore, niobium and tantalum technology, applied in the field of mineral processing technology, can solve the problems of narrow application range, lithium loss, long process, etc., and achieve the effect of simple process

Inactive Publication Date: 2013-12-04
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the flotation desliming of this process will inevitably result in the loss of lithium, and the two-stage grinding process is long, and only the lithium in the ore is recovered, which

Method used

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  • Comprehensive recovery process for lithium-containing polymetallic ore with associated fine-grained niobium-tantalum

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Effect test

Embodiment 1

[0034] Introduction to ore properties: A super-large lithium polymetallic deposit in China, raw ore Li 2 O grade 1.48%, Nb 2 o 5 Grade 0.0115%, Ta 2 o 5 The grade is 0.0041%, and the Sn grade is lower than the industrial grade, which is 0.026%. The useful minerals mainly include spodumene, lepidolite and niobium-tantalite, and the main gangue minerals are feldspar and mica. The ore is open-pit mining, with a high degree of surface weathering and a large amount of mud. It is located in an alpine and high-altitude area, and the associated niobium and tantalum minerals have a finer particle size, with a particle size of less than 0.045mm accounting for 74.01%, which is comparable to the spodumene mineral particle size in the ore (Particle size greater than 0.074mm accounts for 92%). The difference is large, and the comprehensive recovery is difficult. The lithium concentrate obtained by the traditional "gravity separation-magnetic separation-gravity separation tailings float...

Embodiment 2

[0043] Introduction to ore properties: a lithium polymetallic deposit in Rangtang, Sichuan, raw ore Li 2 O grade 1.21%, Nb 2 o 5 Grade 0.0095%, Ta 2 o 5 The grade is 0.0054%, and the Sn grade is lower than the industrial grade, which is 0.034%. The ores are mainly spodumene, feldspar and quartz; a small amount of minerals include tantalum niobite and so on. The ore has a large amount of mud, and the associated niobium and tantalum minerals have a fine particle size, with a particle size of less than 0.1mm accounting for 70.09%, which is quite different from the spodumene mineral particle size in the ore (a particle size greater than 0.1mm accounts for 98.85%), and comprehensive recovery is difficult. big. The lithium concentrate obtained by the traditional "gravity separation-magnetic separation-gravity separation tailings floating lithium" process contains Li 2 O5.75%, recovery rate 63.68%; grade of tantalum and niobium concentrate: Nb 2 o 5 31.01%, Ta 2 o 5 14.85...

Embodiment 3

[0052] Introduction to ore properties: a lithium polymetallic deposit in Dilaqiu, Sichuan, raw ore Li 2 O grade 1.09%, Nb 2 o 5 Grade 0.011%, Ta 2 o 5 The grade is 0.0051%, and the Sn grade is less than 0.1%. The main useful minerals are spodumene and niobium-tantalite, and the main gangue minerals are quartz, feldspar, mica and so on. The ore contains a large amount of fine mud, and the associated niobium and tantalum minerals have a finer particle size, with a particle size of less than 0.045mm accounting for 78.12%, which is quite different from the lithium mineral particle size in the ore (a particle size greater than 0.074mm accounts for 89.01%), making comprehensive recovery difficult. The lithium concentrate obtained by the traditional "gravity separation-magnetic separation-gravity separation tailings floating lithium" process contains Li 2 O5.48%, recovery rate 60.76%; grade of tantalum and niobium concentrate: Nb 2 o 5 30.12%, Ta 2 o 5 12.21%, recovery rate:...

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Abstract

The invention relates to a comprehensive recovery process for lithium-containing polymetallic ores with associated fine-grained niobium-tantalum. The process comprises the steps of raw ore crude grinding, settlement for desliming, flotation, agglomeration and magnetic separation, gravity separation and the like. The process provided by the invention is particularly applicable to the comprehensive recovery of lithium-containing polymetallic ores which contain a great amount of slime, are located in mining areas at low temperature all through the year, are low in grade of associated niobium-tantalum minerals and are fine in disseminated grain size, the process is advanced, reliable, simple, reasonable and highly targeted, the requirement on raw ore grinding fineness is not high, the regrinding amount is small, the operation cost is low, the comprehensive recovery rate is higher and the industrialization prospect is good.

Description

technical field [0001] The invention relates to a beneficiation process, in particular to a comprehensive recovery process for recovering metal lithium and fine-grained niobium-tantalum metal from lithium polymetallic ore with associated fine-grained niobium-tantalum. Background technique [0002] my country is rich in lithium mineral resources, ranking third in the world. As of the end of 2008, there were 32 proven lithium ore mining areas (48% of which were comprehensive endogenous deposits of lithium, niobium and tantalum), mainly distributed in Sichuan, Xinjiang, Jiangxi, Hubei, Henan and other places. There are few single deposits of spodumene ore, and many associated deposits. It is often associated with useful minerals such as lepidolite, niobium-tantalite, and beryl, and has great comprehensive utilization value. At present, due to the lack of advanced mining, dressing and smelting technology support, most domestic processing plants only recover spodumene through mi...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03C1/30B03D1/00
Inventor 赵开乐王昌良邓伟廖祥文陈炳炎刘厚明饶系英
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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