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Morpholine quaternary ammonium salt Gemini surface active agent for mineral flotation

A surfactant and mineral flotation technology, applied in flotation, solid separation, etc., to achieve the effects of promoting adsorption, enhancing flotation performance, and improving self-aggregation tendency

Active Publication Date: 2017-12-08
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, its application as a flotation collector in flotation has not been reported in the prior art

Method used

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  • Morpholine quaternary ammonium salt Gemini surface active agent for mineral flotation
  • Morpholine quaternary ammonium salt Gemini surface active agent for mineral flotation
  • Morpholine quaternary ammonium salt Gemini surface active agent for mineral flotation

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1: Application of butane-1,4-bis(dodecylmorpholinyl ammonium bromide) in the flotation separation of sodium chloride and carnallite

[0029] The raw ore of a carnallite mine in Qinghai contains 21.05% KCl and 20.23% NaCl, adding saturated brine to adjust the slurry to a mass concentration of 30%, adding morpholine quaternary ammonium salt type Gemini surfactant butane-1,4-bis(dodecyl Alkyl morpholino ammonium bromide) with an amount of 150g / t for roughing flotation, adding morpholine quaternary ammonium salt type Gemini surfactant butane-1,4-bis(dodecylmorpholino bromide) Ammonium) 50g / t, see the flotation process flow chart figure 1 . Morpholine quaternary ammonium salt type Gemini surfactant butane-1,4-bis(dodecylmorpholino ammonium bromide) and conventional collector dodecylmorpholine p-carnallite in the present invention The flotation results are shown in Table 1. As can be seen from Table 1, compared with the conventional collector dodecylmorpholine, the...

Embodiment 2

[0032] Embodiment 2: the application of morpholine quaternary ammonium salt type Gemini collector in flotation sodium chloride pure mineral

[0033] Put 2.0g of sodium chloride pure mineral with a particle size of -0.15mm~+0.074mm in a 40mL flotation tank, add 30mL of saturated sodium chloride solution, stir for 2 minutes to make it evenly mixed, and the amount of collector is 320g / t Flotation is carried out under certain conditions, and the flotation process flow chart is shown in figure 2 . The flotation comparison test results of two kinds of morpholine quaternary ammonium salt type Gemini collectors among the present invention and two kinds of collectors commonly used dodecylmorpholine, tetradecylmorpholine are shown in Table 2. It can be seen from Table 2 that the collection ability of the morpholine quaternary ammonium salt type Gemini collector to sodium chloride is significantly stronger than that of the two commonly used alkylmorpholine collectors.

[0034] Table 2...

Embodiment 3

[0036] Embodiment 3: the application of butane-1,4-bis(decylmorpholinyl ammonium bromide) in lepidolite ore flotation

[0037]The main useful mineral of the gravity separation tailings of a tantalum-niobium mine in Jiangxi is lepidolite, which contains Li 2 O 1.23%, the particle size is -0.25mm, accounting for 65%, add water to adjust the slurry to a mass concentration of 35%, add sulfuric acid 1000g / t, collector butane-1,4-bis(decylmorpholino ammonium bromide) 200g / t, carry out coarse separation and flotation of lepidolite ore, and add 50g / t collector butane-1,4-bis(decylmorpholino ammonium bromide) for sweeping, and use one roughing, one sweeping, The two selected flotation process flow, see the flotation process flow chart image 3 . The flotation comparison test results of morpholine quaternary ammonium salt type Gemini surfactant butane-1,4-bis(decylmorpholino ammonium bromide) and commonly used collector dodecylamine in the present invention are shown in Table 3 . It...

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Abstract

The invention discloses a morpholine quaternary ammonium salt Gemini surface active agent for mineral flotation, and belongs to the technical field of beneficiation. The morpholine quaternary ammonium salt Gemini surface active agent expressed by the formula I is used as a collecting agent in the flotation separation of sodium chloride and carnallite, the ore flotation of lepidolite or the reverse flotation desiliconization decontamination of iron ores. FORMULA; in the formula I, R1 and R2 are alkyls with 8-20 carbons; R3 is alkylene with 2-10 carbon atoms; and X is Cl, Br or I. The molecule of the morpholine quaternary ammonium salt Gemini surface active agent uses a connecting radical to connect two morpholine heterocycle-contained hydrophilic head groups; double morpholine heterocycles exist to improve the surface activity and the self-gathering tendency of the collecting agent to promote absorption of molecules of the collecting agent on the surfaces of ores; the molecules contain two hydrophobic groups and two mineralophile groups to achieve higher collecting capacity on target minerals; and compared with a common flotation collecting agent in the prior art, such characteristics as flotation efficiency and mineral recovery rate can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a morpholine quaternary ammonium salt type Gemini surfactant used for mineral flotation. Background technique [0002] The cationic flotation process is generally considered to be one of the most efficient and economical separation methods for the separation of sodium chloride and carnallite, lepidolite ore or bauxite, and iron ore desiliconization and impurity removal. The technical core of flotation recovery. [0003] At present, commonly used cationic collectors mainly include alkylmorpholines, fatty amines, quaternary ammonium salts, and ether amines. Titkov et al. carried out research on the removal of sodium chloride by reverse flotation of carnallite ore with alkylmorpholine (see structural formula a) (Minerals Engineering, 2003, 16(11): 1161-1166). The research group of Professor Yu Jianguo from East China University of Science and Technology studied the reve...

Claims

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Application Information

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IPC IPC(8): B03D1/01B03D101/02B03D103/04
CPCB03D1/01B03D2201/02B03D2203/04
Inventor 黄志强邱廷省黄万抚余新阳李立清刘汝宽王浩林王强强王礼平
Owner JIANGXI UNIV OF SCI & TECH
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