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A method for flotation recovery of tantalum and niobium from alkaline feldspar granite tantalum and niobium ore

An alkaline feldspar and granite technology, applied in flotation, solid separation, etc., can solve the problems of unfavorable tantalum and niobium recovery and concentrate grade, large dosage of chemicals, and high beneficiation cost, so as to improve flotation grade and recovery rate, The effect of reducing production cost and improving flotation grade

Active Publication Date: 2021-01-29
淄博特斯博新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The flotation collectors of tantalum-niobium ore include carboxylic acids and their soaps, which have strong collection capacity but poor flotation selectivity; phosphonic acid collectors include styrene phosphonic acid and alkylamine dimethylformide Phosphonic acid, etc., have good selectivity, but the dosage of reagents is large, and the cost of flotation is high; arsinic acid collectors include benzyl arsenic acid and toluene arsenic acid, which have good pharmaceutical effects, but are highly toxic and pollute the environment; in recent years , Hydroxamic acid collectors, such as benzohydroxamic acid, C 7-9 Hydroxamic acid, salicylic hydroxamic acid, etc. are gradually used in the flotation of tantalum-niobium ore due to their excellent selectivity, but their consumption is large and the cost of beneficiation is high. Therefore, the utilization rate of hydroxamic acid collectors should be increased and the dosage should be reduced. is the key
At present, the addition of tantalum-niobium ore flotation reagents is relatively traditional, which cannot effectively suppress the gangue in the ore, which is not conducive to the recovery of tantalum-niobium ore and the improvement of the concentrate grade.

Method used

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  • A method for flotation recovery of tantalum and niobium from alkaline feldspar granite tantalum and niobium ore
  • A method for flotation recovery of tantalum and niobium from alkaline feldspar granite tantalum and niobium ore
  • A method for flotation recovery of tantalum and niobium from alkaline feldspar granite tantalum and niobium ore

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Effect test

Embodiment 1

[0026] An alkaline feldspar-granite tantalum-niobium deposit in Jiangxi, in which (TaNb) 2 o 5 The content of tantalum and niobium in the ore is 0.11%; the main tantalum-niobium minerals in the ore are manganese-niobite, rich-dilute gold ore, niobium-iron rutile, etc.; the gangue minerals are mainly quartz, feldspar, sodium amphibole, etc.; It is finer, with the main particle size ranging from 0.01 to 0.16mm, which is not suitable for gravity recovery, so tantalum and niobium are recovered by flotation.

[0027] Option 1: Sequential addition of agents: Grind ore to -0.074mm to account for 80-85%, then add sodium carbonate, acidified water glass 400g / t, lead nitrate 400g / t, benzohydroxamic acid 400g to the pulp in sequence / t, butylamine black medicine 300g / t and No. 2 oil 20g / t, the stirring time of each of the above medicines is 3 minutes; after mixing, enter the flotation tank for rough selection;

[0028] Scheme 2: The grinding fineness and dosage of chemicals are the sam...

Embodiment 2

[0035] Gravity separation fine mud of an alkaline feldspar granite tantalum niobium ore in Jiangxi, in the fine mud (TaNb) 2 o 5 content of 0.0421%; the main tantalum-niobium minerals in the fine mud are tantalum-niobite, tantalum-niobium-manganese ore and fine spar; the gangue minerals are mainly albite, orthoclase, quartz, muscovite, etc.; the fine mud -0.038mm accounts for 80%, and -0.02mm accounts for 48%, so the flotation method is used to recover the fine mud.

[0036] Option 1: Sequential addition of agents: making pulp with fine mud with a concentration of 30%; sequentially adding sodium carbonate, acidified water glass 200g / t, carboxymethyl cellulose 200g / t, lead nitrate 300g / t, and benzene to the pulp 300g / t of hydroxamic acid, 200g / t of butyl xanthate and 20g / t of No. 2 oil, the stirring time of each of the above chemicals is 3 minutes; after pulping, enter the flotation tank for roughing;

[0037] Scheme 2: The grinding fineness and dosage of chemicals are the sa...

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Abstract

The invention discloses a method for recovering tantalum-niobium from alkaline feldspar granite tantalum-niobium ore by flotation. Inhibitors are added first, which can effectively inhibit the gangue in the ore, improve the flotation grade of tantalum-niobium concentrate, and Adding pH adjuster, activator, collector and foaming agent at the same time can improve the recovery rate of tantalum and niobium flotation and the utilization rate of flotation collector, supplemented by low-cost heteropolar collector, can reduce The consumption of the main collector hydroxamic acid reduces the cost of flotation reagents for flotation recovery of tantalum and niobium from alkaline feldspar granite tantalum and niobium ore, and the method of the invention effectively improves the flotation grade and recovery rate of tantalum and niobium concentrate , reduce production costs, save resources, have strong practicability, and are suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a method for recovering tantalum-niobium from alkaline feldspar-granite tantalum-niobium ore by flotation. Background technique [0002] Tantalum and niobium are important strategic resources. At present, the annual consumption of tantalum and niobium in China is close to 10,000 tons. Alkaline feldspar-granite-type tantalum-niobium ore is the main tantalum-niobium resource in my country. It is characterized by low grade, less useful minerals, complex mineral composition and brittle mineral properties; Metallurgical or combined process for processing. Flotation is a method to realize the effective recovery of tantalum and niobium in tantalum and niobium gravity separation fine mud and alkaline feldspathic granite type tantalum and niobium ore. [0003] The flotation collectors of tantalum-niobium ore include carboxylic acids and their soaps, which have stro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03D1/018B03D2201/007B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 高玉德曹苗邱显扬卜浩孟庆波何名飞王洪玲蒋碧妮
Owner 淄博特斯博新材料科技有限公司
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