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Composite collecting agent for recycling LiBeTaNb from granite pegmatite ore

A composite collector and pegmatite technology, applied in solid separation, flotation, etc., can solve problems such as complex process flow, complex equipment, difficult operation and maintenance, etc., and achieve the effect of strong collection capacity and good selectivity

Active Publication Date: 2014-02-05
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the lithium, beryllium, niobium, and tantalum minerals contained in the ore are comprehensively recycled, the required equipment is very complicated and the process is also very complicated, which brings great difficulties to operation and maintenance.

Method used

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  • Composite collecting agent for recycling LiBeTaNb from granite pegmatite ore
  • Composite collecting agent for recycling LiBeTaNb from granite pegmatite ore
  • Composite collecting agent for recycling LiBeTaNb from granite pegmatite ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The composite collector is composed of industrial fatty acids, primary amine compounds and alkyl aminopropionic acid compounds in proportions of 85%, 10% and 5% by mass, respectively, and sodium hydroxide is added under normal pressure to cool at 30°C. The chemical reaction was carried out for 40 minutes. Among them, industrial fatty acids have -COOH polar groups, and non-polar groups contain 17 carbons; primary amine compounds have -NH 2 Polar groups, non-polar groups are hydrocarbon chains with a carbon chain length of 12; alkyl aminopropionic acid compounds have -NHCH 2 CH 2 COOH is a polar group, and the non-polar group is a hydrocarbon chain with a carbon chain length of 12.

[0013] The ore of a rare metal mine in Ganzi Prefecture, Sichuan contains 1.33% Li 2 O, 0.0152% BeO, 0.0088% Ta 2 o 5 , 0.0095%Nb 2 o 5 , adding 500g / t of the collector of the present invention, used at a slurry temperature of 16°C, and after flotation separation, the separation result...

Embodiment 2

[0017] The composite collector is composed of industrial fatty acids, primary amine compounds and alkyl aminopropionic acid compounds in proportions of 90%, 7% and 3% by mass respectively, and sodium hydroxide is added under normal pressure to cool at 35°C. The chemical reaction was carried out for 40 minutes. Among them, industrial fatty acids have -COOH polar groups, and non-polar groups contain 15 carbons; primary amine compounds have -NH 2 Polar groups, non-polar groups are hydrocarbon chains with a carbon chain length of 14; alkyl aminopropionic acid compounds have -NHCH 2 CH 2 COOH is a polar group, and the non-polar group is a hydrocarbon chain with a carbon chain length of 16.

[0018] The pegmatite ore in Xinjiang contains 0.86% Li 2 O, 0.048% BeO, 0.0118% Ta 2 o 5 , 0.0085%Nb 2 o 5 , add 400g / t of the collector of the present invention, use it at a slurry temperature of 20°C, and obtain the separation results in Table 2 after separation by flotation.

[0019]...

Embodiment 3

[0022] The composite collector is composed of industrial fatty acids, primary amine compounds and alkyl aminopropionic acid compounds in proportions of 80%, 10%, and 10% by mass, respectively, and sodium hydroxide is added under normal pressure. The chemical reaction was carried out for 40 minutes. Among them, industrial fatty acids have -COOH polar groups, and non-polar groups contain 9 carbons; primary amine compounds have -NH 2 Polar groups, non-polar groups are hydrocarbon chains with a carbon chain length of 12; alkyl aminopropionic acid compounds have -NHCH 2 CH 2 COOH is a polar group, and the non-polar group is a hydrocarbon chain with a carbon chain length of 18.

[0023] 1.81% Li in a granite pegmatite ore in Sichuan 2 O, 0.0446% BeO, 0.0299% Ta 2 o 5 , 0.0494%Nb 2 o 5 According to the useful mineral content in the ore, the dosage of the composite collector is determined to be 1000g / t, and it is used at a slurry temperature of 15°C. After separation by flotati...

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Abstract

The invention discloses a composite collecting agent for recycling LiBeTaNb from granite pegmatite ore. The composite collecting agent for recycling LiBeTaNb from granite pegmatite ore is a faint yellow cream which is obtained by mixing, by weight percentage, 80%-90% of industrial fatty acid, 5%-10% of primary amine chemical compounds and 5%-10% of alkyl amino-propionic acid, and then adding sodium hydroxide into the mixture at ordinary pressure and 30-40 DEG C for reaction for 40 minutes. The collecting agent for recycling LiBeTaNb from granite pegmatite ore can effectively achieve selective collection of minerals such as spodumene, aquamarine and Nb-Ta-Fe ore. The action principle of the collecting agent is that relatively strong electrostatic absorption, relatively strong hydrogen bond bonding and relatively strong absorption can be generated between the composite collecting agent and the positive ion active particles such as Li, Be, Ta and Nb exposed on the surfaces of different minerals; due to the fact that the surfaces of gangue minerals such as quartz and feldspar do not contain any active positive ion particles, the collecting agent can generate weak absorption force on the surfaces of the gangue minerals, further good selectivity and relatively good separation effects during a flotation process can be obtained.

Description

technical field [0001] The invention relates to a flotation composite collector, in particular to a composite collector for comprehensively recovering lithium, beryllium, tantalum, niobium and other rare metal minerals from granite pegmatite ore. Background technique [0002] Granite pegmatite deposits often contain various rare metal minerals such as lithium, beryllium, niobium, tantalum, rubidium, and cesium. Rare metals have many special physical and chemical properties, and are indispensable materials for the development of modern industry and the latest science and technology. For example, metal lithium fuel has the advantages of high combustion temperature, fast combustion speed, wide flame, fast exhaust, and small unit weight. It is a high-energy solid material and fuel. Beryllium has a small specific gravity, a large modulus of elasticity, and a melting point more than twice that of aluminum and magnesium. It is used to manufacture structural components in aviation ...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02
Inventor 王毓华胡岳华于福顺谢贞付张垒王进明
Owner CENT SOUTH UNIV
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