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Ore dressing method of micro-fine particle tantalum-niobium ores

A beneficiation method and technology for tantalum-niobium ore, which are applied in chemical instruments and methods, wet separation, planer/intercalation bed, etc., can solve the problems of non-recovery, low recovery rate, and low recovery rate of fine-grained tantalum-niobium ore.

Inactive Publication Date: 2013-01-09
GUANGZHOU RES INST OF NON FERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technical solution is that the lower limit of the recovery particle size of the strong magnetic separation process is 0.02mm, so the tantalum-niobium ore of -0.02mm cannot be recovered, resulting in a low recovery rate
The disadvantage of this technical solution is that the fine-grained tantalum-niobium ore is pre-removed after being concentrated and deslimed by a spiral classifier, and it is not recovered.
The disadvantage of this technical solution is that the recovery rate of fine-grained tantalum-niobium ore is extremely low in spreading chute and shaker

Method used

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  • Ore dressing method of micro-fine particle tantalum-niobium ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Ta content in secondary mud of a tantalum-niobium mine in Jiangxi 2 o 5 0.017%, Nb 2 o 5 0.0169%, -0.037mm accounts for 98%.

[0017] Desliming pretreatment: use a hydrocyclone to pre-desilt to obtain sand and micro-sludge, remove 4.89% of the micro-sludge, Ta 2 o 5 and Nb 2 o 5 Losses of 0.32% and 0.29%;

[0018] Flotation: Carry out flotation for grit settling according to the amount of chemicals listed in Table 1, one roughing, one sweeping, one blank concentration to obtain tantalum-niobium coarse concentrate and flotation tailings;

[0019] Drug removal and defoaming: Add sulfuric acid at 300g / t to the rough concentrate of tantalum and niobium, and stir until the foam disappears;

[0020] Gravity separation: The tantalum-niobium rough concentrate after de-drug and defoaming is subjected to a centrifugal concentrator, and undergoes a rough separation, two sweeping separations, and a single concentration to obtain tantalum-niobium concentrate and gravity sepa...

Embodiment 2

[0024] Ta content in primary mud of a tantalum-niobium mine in Yunnan 2 o 5 0.0169%, Nb 2 o 5 0.0162%, -0.037mm accounted for 95.96%.

[0025] Desliming pretreatment: use a hydrocyclone to pre-desilt to obtain sand and micro-sludge, remove 5.50% of the micro-sludge, Ta 2 o 5 and Nb 2 o 5 Losses of 0.42% and 0.47%;

[0026] Flotation: carry out flotation on the grit according to the amount of chemicals listed in Table 1, one roughing, two sweepings, one beneficiation and one blank beneficiation to obtain tantalum-niobium rough concentrate and flotation tailings;

[0027] Drug removal and defoaming: Add sulfuric acid at 500g / t to the rough concentrate of tantalum and niobium, and stir until the foam disappears;

[0028] Gravity separation: The tantalum-niobium rough concentrate after de-drug and defoaming is subjected to a centrifugal concentrator, and undergoes a rough separation, two sweeping separations, and a single concentration to obtain tantalum-niobium concentrat...

Embodiment 3

[0032] Ta content in primary and secondary mud of a tantalum-niobium mine in Yunnan, Fujian 2 o 5 0.0165%, Nb 2 o 5 0.0169%, -0.037mm accounts for 98..87%;

[0033] Desliming pretreatment: use a hydrocyclone to pre-desilt to obtain sand and micro-sludge, remove 5.33% of the micro-sludge, Ta 2 o 5 and Nb 2 o 5 Losses of 0.42% and 0.44%;

[0034] Flotation: Carry out flotation on the grit according to the dosage of reagents listed in Table 1, one roughing, two sweepings, two beneficiaries to obtain tantalum-niobium coarse concentrate and flotation tailings;

[0035] Drug removal and defoaming: Add sulfuric acid at 200g / t to the rough concentrate of tantalum and niobium, and stir until the foam disappears;

[0036] Gravity separation: The tantalum-niobium rough concentrate after de-drug and defoaming is subjected to a centrifugal concentrator, and undergoes a rough separation, two sweeping separations, and a single concentration to obtain tantalum-niobium concentrate and ...

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Abstract

Disclosed is an ore dressing method of micro-fine particle tantalum-niobium ores. The ore dressing method is characterized by including steps of firstly, performing desliming pre-treatment to obtain set sand and micro-mud; secondly, adding an adjusting agent of sodium carbonate, an inhibiting agent of water glass, an activating agent of lead nitrate and collectors of benzohydroxamic acid and hydroxyamino acid to the set sand for once roughing; adding the benzohydroxamic acid and the hydroxyamino acid for once or twice scavenging; adding the water glass for once or twice concentration or blank concentration to obtain tantalum-niobium rough concentrates and flotation tailings; thirdly, performing de-reagent and de-foaming: adding sulfuric acid to the tantalum-niobium rough concentrates, and stirring the mixture until foams are disappeared; and fourthly, performing gravity concentration: subjecting the tantalum-niobium rough concentrates to de-reagent and de-foaming, and subjecting the tantalum-niobium rough concentrates to gravity concentration to obtain tantalum-niobium concentrates and gravity concentration tailings. According to the ore dressing method of the micro-fine particle tantalum-niobium ores, the recovery rate of the micro-fine particle tantalum-niobium ores is increased by over 30%, and the ore dressing method is applicable to primary mud and secondary mud with sizes of -0.037mm in tantalum-niobium ores.

Description

technical field [0001] The invention relates to an ore dressing method, in particular to a fine ore beneficiation method. Background technique [0002] my country's tantalum industrial reserves are 61.34kt, accounting for about 20% of the world's reserves, and niobium industrial reserves are 486.49kt, accounting for about 1.5% of the world's reserves. A tantalum-niobium mine in a certain place in Jiangxi is the largest tantalum-niobium mine in my country. Its tantalum reserves are 17.65kt, accounting for 28% of the national reserves, niobium reserves are 14.32kt, and the production scale is 2,500 tons per day. The tantalum and niobium concentrate is 158 tons, and the daily processing of raw ore is 7,000 tons. The -0.074mm secondary fine mud accounts for 32% of the original ore, and the metal occupation rate is 20%, of which -0.037mm metal accounts for more than 85% of the total metal content of the secondary fine mud. Calculated according to the current market price, the to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B1/00B23D1/00
Inventor 高玉德邱显扬韩兆元邹霓王国生徐晓萍张凤华
Owner GUANGZHOU RES INST OF NON FERROUS METALS
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