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A Gemini Surfactant for Mineral Flotation

A Gemini surface and mineral flotation technology, applied in flotation, solid separation, etc., to achieve good biodegradability, increase hydrophobicity, and low toxicity

Active Publication Date: 2019-08-27
宁国市吉思知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tao Mingshan etc. reported the synthesis, surface activity, foam performance and Krafft point of the Gemini surfactant shown in formula I (Chemical Research and Application, 2013,25(6):793-797), while in the prior art Its application as a flotation collector in flotation has not been reported yet

Method used

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  • A Gemini Surfactant for Mineral Flotation
  • A Gemini Surfactant for Mineral Flotation
  • A Gemini Surfactant for Mineral Flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: the application of gemini surfactant in flotation potassium chloride pure mineral

[0030] Put 2.0g of potassium chloride pure mineral with a particle size of -0.15mm~+0.074mm in a 40mL flotation tank, add 30mL of saturated potassium chloride solution, stir for 2 minutes to make it evenly mixed, and the amount of collector is 40g / t Flotation is carried out under certain conditions, and the flotation process flow chart is shown in figure 1 . Table 1 shows the flotation contrast test results of two kinds of Gemini collectors among the present invention and two kinds of collectors cetylamine and octadecylamine commonly used. It can be seen from Table 1 that the collection ability of Gemini collector to potassium chloride is obviously stronger than that of two commonly used aliphatic amine collectors.

[0031] Table 1 Comparative experimental results of collector flotation pure minerals

[0032]

Embodiment 2

[0033] Example 2: Application of dibromide-bis[3-(N,N-dimethyloctadecylammonium) propane]-malonamide in flotation of potash salt ore

[0034]A potash mine sample in Qinghai, the original ore contains KCl 9.56%, NaCl 51.93%, adding saturated brine to grind the ore to -1mm to account for 95%, flotation pulp concentration 25%, starch dosage 200g / t, collector dosage Under the conditions of 100g / t and 50g / t of foaming agent No. 2 oil, carry out roughing flotation of potassium salt ore, add collector 40g / t for sweeping, add 60g / t of starch for the first selection, and add 60g / t of starch for the second selection The amount of starch added is 40g / t, and the amount of starch added for three times of selection is 40g / t. The flow chart of the flotation process is shown in figure 2 . Gemini surfactant dibromide-bis[3-(N,N-dimethyloctadecylammonium) propane]-malonamide in the present invention and the flotation comparison of commonly used collector octadecylamine The test results are s...

Embodiment 3

[0038] Example 3: Application of dichloride-bis[3-(N,N-dimethyldodecylammonium) propane]-malonamide in lepidolite ore flotation

[0039] The main useful mineral of the gravity separation tailings of a tantalum-niobium mine is lepidolite, which contains Li 2 O 0.86%, the particle size is -0.074mm, accounting for 30%, add water to adjust the slurry to a mass concentration of 30%, add 1800g / t sulfuric acid, 180g / t dichloride-bis[3-(N,N-dimethyl dodeca Alkyl ammonium) propane] - malonamide, carry out roughing flotation of lepidolite ore, sweep and add 60g / t dichloride-bis[3-(N,N-dimethyldodecyl ammonium) propane] - Malonamide, using a flotation process of one roughing, one sweeping, and two fine selections, the flotation process flow chart is shown in image 3 . Gemini surfactant dichloride-bis[3-(N,N-dimethyldodecyl ammonium) propane]-malonamide in the present invention and the flotation contrast of commonly used collector dodecylamine The test results are shown in Table 3. A...

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Abstract

The invention provides a Gemini surface active agent for mineral flotation, and belongs to the technical field of beneficiation. The Gemini surface active agent expressed by the formula I is used as a collecting agent in the ore flotation of potassic salt ores and lepidolite or the reverse flotation desiliconization decontamination of iron ores and bauxite. FORMULA; in the formula I, R1 and R2 are alkyls with 8-20 carbons; and X is Cl, Br or I. The Gemini surface active agent is used as the collecting agent, and molecules thereof contain two mineralophile groups to achieve higher acting capacity on the surfaces of minerals and to achieve better selectivity on target minerals, and contain two hydrophobic groups to improve the dewatering capacity of the collecting agent and to achieve higher collecting capacity on the target minerals; compared with a common flotation collecting agent in the prior art, such characteristics as flotation efficiency and recovery rate can be effectively improved; and meanwhile, as the molecules contain amide groups, the characteristics of good biodegradability, low toxicity and environmental protection are achieved.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a gemini surfactant for mineral flotation Background technique [0002] Following the development and utilization of xanthate and fatty acids, cationic surfactants were first used in the flotation industry in 1935. In the field of flotation, cationic surface activity is usually used as collectors for potassium chloride, silicate minerals, carbonate minerals and other minerals, so it is used in the flotation of potassium salt ore, lepidolite ore or iron ore, aluminum Soil ore reverse flotation is widely used in desiliconization and impurity removal, and has achieved a relatively ideal separation effect. [0003] At present, most of the cationic collectors commonly used at home and abroad are amine collectors, mainly including fatty amines, quaternary ammonium salts, ether amines, and guanidine compounds. Laskowski et al reviewed the cationic collectors of long-chain a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/01B03D101/02B03D103/04B03D103/10
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 宁国市吉思知识产权运营有限公司
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