Process for recovering zinnwaldite from Ta Nb tailings

A technology of tantalum-niobium tailings and iron-lithium mica, which is applied in magnetic separation, solid separation, high-gradient magnetic separation, etc., can solve the problems of general recovery effect, high production cost, equipment corrosion, etc., and achieve energy saving, environmental protection and pollution in the process. Small, efficient recycling

Inactive Publication Date: 2020-06-30
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a process for recovering iron lepidolite from tantalum-niobium tailings, which aims to solve the problem of reclaiming iron lepidolite from tantalum-niobium tailings The process requires the use of a large amount of chemicals, which is easy to cause environmental pollution and equipment corrosion, and the recovery effect is average, which will cause a certain loss of resources. In addition, the process is com...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This specific embodiment adopts the process of gravity separation-superconducting magnetic separation to reclaim iron lepidolite from tantalum-niobium tailings. The raw material used in this embodiment is tantalum-niobium tailings. There are many types of minerals in the ore, and the mineral composition is complex. Metallic minerals mainly include limonite, and a small amount are pyrite, pyrrhotite, pyrolusite, tantalite, niobite, etc.; non-metallic minerals mainly include quartz, potassium feldspar, albite, diopside, Montmorillonite, kaolinite, etc., followed by zoisite, topaz, apatite, calcite, fine crystal and clay minerals, etc. Li in the ore 2 O exists in the form of iron lepidolite, and the ore Li 2 The O content is 0.62%.

[0026] The specific implementation process is as follows: firstly, the tantalum-niobium tailings are subjected to centrifugal gravity separation using a horizontal centrifuge to remove minerals with low specific gravity in the tantalum-niobiu...

Embodiment 2

[0029] This specific embodiment adopts the process of gravity separation-superconducting magnetic separation to reclaim iron lepidolite from tantalum-niobium tailings. The raw material used in this embodiment is tantalum-niobium tailings. There are many types of minerals in the ore, and the mineral composition is complex. Metallic minerals mainly include limonite, and a small amount are pyrite, pyrrhotite, pyrolusite, tantalite, niobite, etc.; non-metallic minerals mainly include quartz, potassium feldspar, albite, diopside, Montmorillonite, kaolinite, etc., followed by zoisite, topaz, apatite, calcite, fine crystal and clay minerals, etc. Li in the ore 2 O exists in the form of iron lepidolite, and the ore Li 2 The O content is 0.29%.

[0030]The specific implementation process is as follows: first, use a vertical centrifuge to carry out centrifugal gravity separation of tantalum and niobium tailings, remove minerals with low specific gravity in the tantalum and niobium tail...

Embodiment 3

[0033] This specific embodiment adopts the process of gravity separation-superconducting magnetic separation to reclaim iron lepidolite from tantalum-niobium tailings. The raw material used in this embodiment is tantalum-niobium tailings. There are many types of minerals in the ore, and the mineral composition is complex. Metallic minerals mainly include limonite, and a small amount are pyrite, pyrrhotite, pyrolusite, tantalite, niobite, etc.; non-metallic minerals mainly include quartz, potassium feldspar, albite, diopside, Montmorillonite, kaolinite, etc., followed by zoisite, topaz, apatite, calcite, fine crystal and clay minerals, etc. Li in the ore 2 O exists in the form of iron lepidolite, and the ore Li 2 The O content is 0.48%.

[0034] The specific implementation process is as follows: first, use a vertical centrifuge to carry out centrifugal gravity separation of tantalum and niobium tailings, remove minerals with low specific gravity in the tantalum and niobium tai...

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Abstract

The invention discloses a process for recovering zinnwaldite from Ta Nb tailings. The process aims to solve the problems that for sorting for recovering zinnwaldite from Ta Nb tailings, a large amountof agent is needed by a traditional floatation process at present, so that environmental pollution and equipment corrosion are easily caused, the recovery effect is not good, so that certain resourceloss can be caused, and the process is complex, so that production cost is high. The process specifically includes the steps of performing centrifugal re-sorting on the Ta Nb tailings to remove a small proportion of minerals in the Ta Nb tailings, performing pre-enrichment on the zinnwaldite to obtain a gravity concentrate, and performing superconducting magnetic separation on the gravity concentrate through a superconducting magnetic separation machine to obtain a zinnwaldite concentrate. By means of the process, the re-sorting and superconducting magnetic separation process is adopted innovatively, and the sorting precision and efficiency are greatly improved; sorting indexes are good and stable, and production cost is reduced; and meanwhile no agent needs to be added, energy conservation and environmental protection are realized in the technological process, and the efficient recycling of the zinnwaldite resource is realized.

Description

technical field [0001] The invention belongs to the technical field of mineral separation, in particular to a process for recovering iron lepidolite from tantalum and niobium tailings. Background technique [0002] Tantalum-niobium ore refers to the general term for minerals containing tantalum and niobium. There are more than 100 kinds of them. The main ores that can be mined are tantalite, niobite and pyrochlore. Tantalum-niobium ore mining and sorting through a certain process will produce tantalum-niobium tailings, and tantalum-niobium tailings generally contain non-metallic minerals such as iron lepidolite and feldspar. Therefore, rational use of the tailings resources can not only reduce the pressure on the tailings inventory, but also produce good economic and environmental benefits. [0003] However, at present, the recovery and separation of tantalum and niobium tailings is mainly based on traditional flotation. Due to the large amount of chemicals required by the ...

Claims

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Application Information

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IPC IPC(8): B04B5/10B03C1/00
CPCB03C1/002B03C2201/20B04B5/10
Inventor 黄万抚曾祥荣黄李金鸿李新冬黄彪林姚小辉张天锡胡运祯
Owner JIANGXI UNIV OF SCI & TECH
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