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Eutectic solvent cation collecting agent as well as preparation method and application thereof

A technology of cationic collector and deep eutectic solvent, which is applied in the field of deep eutectic solvent cationic collector and its preparation, to achieve the effect of improving collection selectivity, high product purity and good flotation selectivity

Active Publication Date: 2021-03-16
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is mainly used in the fields of separation of acid gases, separation of metal oxides or salts, extraction and separation of active components in natural products, etc., but rarely reported in the field of flotation

Method used

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  • Eutectic solvent cation collecting agent as well as preparation method and application thereof
  • Eutectic solvent cation collecting agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Provide a kind of preparation method of deep eutectic solvent cationic collector, concrete steps are:

[0027] Weigh methyltrioctylammonium chloride and lactic acid in a molar ratio of 1:2, mix and stir magnetically at 35°C in a water bath until a colorless, uniform and clear deep eutectic solvent is obtained.

[0028] The infrared spectrum of the prepared deep eutectic solvent cationic collector is shown in figure 1 . Among them, methyl trioctyl ammonium chloride is respectively in 2924.98cm -1 、2885.82cm -1 、1461.78cm -1 and 1374.11cm -1 CH appears at 3 , CH 2 and the peaks of the symmetric, antisymmetric and bending vibrations of CH, C-N are characterized at 1634.39cm -1 、1046.72cm -1 and 726.24cm -1 at the peak. Lactic acid at 3355.54cm -1 and 1731.41cm -1 The peaks at correspond to the vibrations of C-OH and C=O, respectively, while the rest of the absorption peaks are related to the vibrations of C-OH and the structure of CH. Compared with single comp...

Embodiment 2

[0032] Provide a kind of preparation method of deep eutectic solvent cationic collector, concrete steps are as follows:

[0033] Weigh methyl trioctyl ammonium chloride and lactic acid at a molar ratio of 1:4, mix and stir magnetically at 35°C in a water bath until a colorless, uniform and clear deep eutectic solvent is obtained.

[0034] The deep eutectic solvent cation collector prepared above was used for reverse flotation desiliconization of artificial mixed iron ore, and the specific steps were the same as in Example 1.

[0035] After the flotation, the foam product (iron concentrate) and the product in the tank (iron tailings) were dried and weighed to calculate the recovery rate, and the iron concentrate product grade was 65.86%, and the recovery rate was 83.88%.

Embodiment 3

[0037] Provide a kind of preparation method of deep eutectic solvent cationic collector, concrete steps are as follows:

[0038] Weigh methyltrioctylammonium chloride and lactic acid at a molar ratio of 1:6, mix them and stir them magnetically at 35°C in a water bath until a colorless, uniform and clear deep eutectic solvent is obtained.

[0039] The deep eutectic solvent cation collector prepared above was used for reverse flotation desiliconization of artificial mixed iron ore, and the specific steps were the same as in Example 1.

[0040] After the flotation, the foam product (iron concentrate) and the product in the tank (iron tailings) were dried and weighed to calculate the recovery rate, and the iron concentrate product grade was 64.59%, and the recovery rate was 82.68%.

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Abstract

The invention discloses a eutectic solvent cation collecting agent as well as a preparation method and application thereof, belonging to the field of flotation reagents. According to the eutectic solvent cation collecting agent, lactic acid serves as a hydrogen bond donor, and methyltrioctylammonium chloride serves as a hydrogen bond receptor. Lactic acid and methyltrioctylammonium chloride are heated and stirred to obtain a clear solution, thereby obtaining the eutectic solvent cation collecting agent. Iron ore to be sorted and water are evenly mixed to obtain ore pulp, then the eutectic solvent cation collecting agent is added, and flotation is conducted under the condition of a natural pH value of the ore pulp. The cation collecting agent is easy to prepare and high in product purity, does not need to be further purified, has a good effect in the reverse flotation desilicication process of iron ore, can obtain high iron ore concentrate grade and recovery rate, and has wide application prospects.

Description

technical field [0001] The invention relates to mineral dressing agents, in particular to a deep eutectic solvent cationic collector and its preparation method and application. Background technique [0002] my country's iron ore resources are basically lean iron ore, which has the characteristics of low iron and high silicon. The gangue minerals in magnetite are mainly quartz. Magnetic separation is difficult to remove the associated body of magnetite and quartz, therefore, it is necessary to reduce the silicon-containing gangue minerals in the iron concentrate after magnetic separation by reverse flotation desiliconization process. [0003] The reverse flotation process using cationic collectors has been adopted by many countries, mainly because it has a simple reagent system, fewer types of reagents used, and small consumption of reagents. It can adapt to low-temperature flotation and is suitable for production in low-temperature areas. Process operation It is simple and ...

Claims

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Application Information

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IPC IPC(8): B03D1/01B03D101/02
CPCB03D1/011B03D2201/02
Inventor 梅光军刘彩
Owner WUHAN UNIV OF TECH