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Three-quaternary ammonium salt compound for mineral flotation

A quaternary ammonium salt and mineral flotation technology, which is applied in flotation, solid separation, etc., to achieve the effect of increasing hydrophobicity, strong collection ability and good selectivity

Active Publication Date: 2017-11-17
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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  • Three-quaternary ammonium salt compound for mineral flotation
  • Three-quaternary ammonium salt compound for mineral flotation
  • Three-quaternary ammonium salt compound for mineral flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Application of tribromide-bis(ethyl-2-dimethyldodecylammonium)-dodecylmethylammonium in reverse flotation desiliconization and impurity removal of phosphate rock

[0024] A phosphate ore raw ore contains P 2 o 5 22.32%, SiO 2 17.81%, grind the ore to -0.074mm to account for 85%, add water to adjust the slurry to a mass concentration of 30%, add sulfuric acid 2500g / t, phosphoric acid 1500g / t, three quaternary ammonium salt compounds tribromide-bis(ethyl- 2-Dimethyldodecylammonium)-dodecylmethylammonium with an amount of 380g / t for roughing and flotation, adding three quaternary ammonium salt compounds tribromide-bis(ethyl-2-dimethyl Lauryl ammonium) - dodecyl methyl ammonium 120g / t, add 500g / t of sulfuric acid for the first selection, add 200g / t of sulfuric acid for the second selection, see the flotation process flow chart figure 1 . Three quaternary ammonium salt compound tribromide-bis(ethyl-2-dimethyl dodecyl ammonium)-dodecyl methyl ammonium in the ...

Embodiment 2

[0027] Example 2: Application of trichloride-bis(butyl-2-dimethyldodecylammonium)-tetradecylmethylammonium in iron ore reverse flotation desiliconization and impurity removal

[0028] An iron ore magnetic separation concentrate contains Fe 63.57%, SiO 29.75%, grind the ore to -0.037mm to account for 90%, flotation pulp concentration 30%, add 1000g / t sodium hydroxide, starch 900g / t, collector dosage 120g / t, carry out roughing flotation, sweep 80g / t collector is selected, 300g / t of starch is added for the first selection, 200g / t of starch is added for the second selection, and 200g / t of starch is added for the third selection. See the flotation process flow chart figure 2 . Three quaternary ammonium salt compounds trichloride-bis(butyl-2-dimethyl dodecyl ammonium)-tetradecyl methyl ammonium among the present invention and the flotation comparative test of commonly used collector dodecylamine The results are shown in Table 2. As can be seen from Table 2, compared with common ...

Embodiment 3

[0031] Example 3: Application of trichloride-bis(propyl-2-diethyltetradecylammonium)-hexadecylethylammonium in bauxite reverse flotation desiliconization and impurity removal

[0032] A bauxite ore sample, the raw ore contains Al 2 o 3 63.03%, SiO 2 11.05%, the ratio of aluminum to silicon is A / S 5.70, the ore is ground to -0.074mm, accounting for 70%, the concentration of the flotation pulp is 30%, and the dosage of starch is 3500g / t, and the dosage of collector is 150g / t. For ore roughing flotation, starch 2500g / t and collector 100g / t are added in the first sweep, and starch 2000g / t and collector 100g / t are added in the second sweep. The flotation process flow chart is shown in image 3 . The flotation contrast test of three quaternary ammonium salt compounds trichloride-bis(propyl-2-diethyltetradecylammonium)-hexadecylethylammonium and commonly used collector dodecylamine in the present invention The results are shown in Table 3. As can be seen from Table 3, compared...

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Abstract

The invention provides a three-quaternary ammonium salt compound for mineral flotation, and belongs to the technical field of beneficiation. The three-quaternary ammonium salt compound expressed as the formula I is used as a collecting agent in the reverse flotation desiliconization decontamination of phosphorus ores, iron ores and bauxites, the ore flotation of lepidolite or the flotation separation of potassium chloride and sodium chloride. FORMULA; in the formula I, R1 and R2 are alkyls with 7-20 carbons; R3, R4, R5, R6, R7 and R8 are selected from methyl, ethyl, -(CH2CH2O)nH or -(CH(CH3)CH2O)nH, wherein n is 1-6; R9 and R10 are alkylene with 2-6 carbon atoms; and X is Cl, Br or I. The three-quaternary ammonium salt compound serves as the collecting agent, and molecules thereof contain three mineral loving radicals, so that the electrostatic effect on the surfaces of minerals is higher, and the selectivity of target minerals is better; the three-quaternary ammonium salt compound has multiple hydrophobic radicals to improve the dewatering capacity of the collecting agent and to achieve higher collecting capacity of the target minerals; and compared with a flotation collecting agent generally used in the prior art, the flotation efficiency and the recovery rate can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a triquaternary ammonium salt compound used in mineral flotation Background technique [0002] Quaternary ammonium salt compounds are a class of cationic collectors with good selectivity, widely used in phosphate rock, iron ore, bauxite reverse flotation desiliconization and impurity removal, lepidolite ore flotation or potassium chloride and potassium chloride The flotation separation of sodium chloride has achieved a relatively ideal separation effect, and it is a cationic flotation collector with development prospects. [0003] The quaternary ammonium salt compounds used as flotation agents are mainly alkyl quaternary ammonium salts. Zhong Hong and others systematically studied the reverse flotation desilication behavior and mechanism of quaternary ammonium compound dodecyltrimethylammonium chloride and dodecylamine cationic collectors on bauxite. The results show...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03D101/02B03D103/02
CPCB03D1/011B03D2201/02B03D2203/02
Inventor 黄志强黄万抚邱廷省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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