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An effective recovery process of associated niobium and tantalum in rare metal ores

A rare metal, niobium and tantalum technology, applied in the field of effective recovery process of rare metal ore associated niobium and tantalum, can solve the problems of poor production process stability, low recovery rate of niobium and tantalum, large number of equipment, etc. The effect of high recovery index and single process

Active Publication Date: 2021-09-21
四川省地质矿产勘查开发局成都综合岩矿测试中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "gravity separation-magnetic separation-flotation" process requires a large number of equipment, large equipment specifications, high energy consumption, large floor area, difficult management, poor production process stability, and low recovery rate of niobium and tantalum

Method used

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  • An effective recovery process of associated niobium and tantalum in rare metal ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see figure 1 , a rare metal spodumene mine in Sichuan is associated with niobium and tantalum, and Nb in the original ore 2 o 5 The content is 0.0087%, Ta 2 o 5 The content is 0.0052%, Li 2 O content 1.55%.

[0023] The recovery process of the rare metal spodumene ore associated with niobium and tantalum minerals is:

[0024] 1) Grinding: The raw ore is crushed and ground to -0.074mm, accounting for 35.4%, and the grinding concentration is 55%.

[0025] 2) Desliming and mica removal operations: put the ore pulp after grinding in step 1) into a spiral chute for sorting to obtain slime mica products and products from which slime mica has been removed.

[0026] 3) Nelson concentrator re-separation: the products obtained by step 2) spiral chute separation to remove slime and mica are put into Nelson concentrator for re-separation to obtain Nelson niobium tantalum heavy mineral products and light products.

[0027] 4) Weak magnetic separation: The niobium and tantalum...

Embodiment 2

[0034] A rare metal spodumene mine in Sichuan is associated with niobium and tantalum, and the Nb in the original ore 2 o 5 The content is 0.0095%, Ta 2 o 5 The content is 0.0047%, Li 2 O content 1.43%.

[0035] The recovery process of the rare metal spodumene ore associated with niobium and tantalum minerals is:

[0036] 1) Grinding: The raw ore is crushed and ground to -0.074mm, accounting for 45.1%, and the grinding concentration is 60%.

[0037] 2) Desliming and mica removal operations: put the ore pulp after grinding in step 1) into a spiral chute for sorting to obtain slime mica products and products from which slime mica has been removed.

[0038] 3) Nelson concentrator re-separation: the products obtained by step 2) spiral chute separation to remove slime and mica are put into Nelson concentrator for re-separation to obtain Nelson niobium tantalum heavy mineral products and light products.

[0039] 4) Weak magnetic separation: The niobium and tantalum heavy miner...

Embodiment 3

[0046] A rare metal spodumene mine in Sichuan is associated with niobium and tantalum, and the Nb in the original ore 2 o 5 The content is 0.0102%, Ta 2 o 5 The content is 0.0058%, Li 2 O content 1.34%.

[0047] The recovery process of the rare metal spodumene ore associated with niobium and tantalum minerals is:

[0048] 1) Grinding: The raw ore is crushed and ground to -0.074mm, accounting for 54.8%, and the grinding concentration is 65%.

[0049] 2) Desliming and mica removal operations: put the ore pulp after grinding in step 1) into a spiral chute for sorting to obtain slime mica products and products from which slime mica has been removed.

[0050] 3) Nelson concentrator re-separation: the products obtained by step 2) spiral chute separation to remove slime and mica are put into Nelson concentrator for re-separation to obtain Nelson niobium tantalum heavy mineral products and light products.

[0051] 4) Weak magnetic separation: The niobium and tantalum heavy miner...

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Abstract

The invention discloses an effective recovery process of rare metal ore associated niobium and tantalum. The steps of the method are as follows: step 1. ore grinding; step 2. demineralization mud mica operation; step 3. Nelson concentrator re-election; step 4. magnetic field weakening Election; step 5. high-gradient magnetic separation; step 6. shaker gravity separation; step 7. acid dissolution to obtain niobium tantalum concentrate and acid soluble matter. Compared with the prior art, the present invention aims at the deficiencies of the prior art in the comprehensive recovery of associated niobium and tantalum minerals in rare metal spodumene mines, and provides a device with a small number of equipment, small equipment specifications, low energy consumption, and an Small size, single process, simple management, stable process, high niobium and tantalum recovery index of dressing and smelting recovery process.

Description

technical field [0001] The invention relates to a dressing and smelting process, in particular to an effective recovery process of associated niobium and tantalum in rare metal ores. Background technique [0002] Niobium and tantalum have a large number of excellent properties and a wide range of applications. They are national strategic resources and occupy an important position in various fields related to the national economy and people's livelihood. my country's niobium and tantalum resources are small, the demand is large, and the price of niobium and tantalum is high. The domestic output of niobium and tantalum is low, and the self-sufficiency rate is low. [0003] A large amount of niobium and tantalum minerals are associated with pegmatite type spodumene ores in western Sichuan, my country. Among them, the associated Nb 2 o 5 The content is about 0.012% (converted into Nb 2 o 5 About 13000 tons), Ta 2 o 5 The content is about 0.008% (converted into Ta 2 o 5...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03B9/00C22B34/24C22B3/06
CPCB03B7/00B03B9/00C22B3/06C22B34/24Y02P10/20
Inventor 杨敏
Owner 四川省地质矿产勘查开发局成都综合岩矿测试中心
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