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Decyl salicylhydroxamic acid and application thereof

A technology of decyl salicylic hydroxamic acid and collector, which is applied in the field of decyl salicylic hydroxamic acid and its application, can solve problems such as insufficient collection capacity of alkyl hydroxamic acid, and achieve high-efficiency flotation separation of minerals, nucleophilic The effect of strong ability and strong harvesting ability

Inactive Publication Date: 2018-09-21
广东省资源综合利用研究所 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Benzohydroxamic acid, salicylhydroxamic acid and C 5-9 Insufficient collection capacity of alkyl hydroxamic acid

Method used

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  • Decyl salicylhydroxamic acid and application thereof
  • Decyl salicylhydroxamic acid and application thereof
  • Decyl salicylhydroxamic acid and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Flotation of wolframite by decyl salicyl hydroxamic acid.

[0026] Floating sulfur tailings (containing black tungsten and scheelite) of a tungsten mine, the ore contains WO 3 0.3~0.45%, ore grinding to -0.074mm accounted for 76%, flotation slurry concentration 40%, water glass 1800g / t, lead nitrate 300g / t, decyl salicylic hydroxamic acid 120g / t, floating sulfur tailings Add 15g / t decyl salicylic hydroxamic acid to the rough selection, 15g / t decyl salicylic hydroxamic acid to the second sweep, add 800 g / t acidified water glass to the first selection, add 600 g / t acidified water glass to the second water glass t, adding acidified water glass 500g / t for three times of selection, see the flotation process flow chart image 3 . The results of the flotation comparison test with benzohydroxamic acid are shown in Table 1. It can be seen from Table 1 that, compared with benzohydroxamic acid, the WO content in black tungsten floating sulfur tailings was reduced by using decy...

Embodiment 2

[0030] Flotation of rare earths by decyl salicylhydroxamic acid.

[0031] Rare earth raw ore from a certain place in China is selected, mainly composed of bastnaesite, bastnaesite, monazite, barite, fluorite, calcite, orthoclase, quartz, sodium amphibole, neonite, hornblende , lead manganese ore, biotite and kaolin and other minerals, REO grade 2.79%. After the raw ore is ground by a rod mill, a material with a -0.075mm content of 80% is obtained. After strong magnetic separation, a strong magnetic concentrate with a REO grade of 23~24% is obtained, and the strong magnetic concentrate is used as a flotation material . The concentration of flotation pulp is 30%, add acidified water glass 3000g / t, decyl salicylic hydroxamic acid 530 g / t and foaming agent kerosene 80g / t, carry out flotation roughing, add decyl salicylic hydroxamic acid 150g in one sweep / t, the amount of acidified water glass for the first selection is 800g / t, and the amount of acidified water glass for the sec...

Embodiment 3

[0034] Flotation of tin by decyl salicyl hydroxamic acid.

[0035] A cassiterite fine mud raw ore has a tin grade of 0.5%, and a particle size tail of -0.074mm accounts for 75%. Add water to adjust the slurry to a mass concentration of 30%, and add Na 2 CO 3 300g / t, CMC 100g / t, decyl salicylic hydroxamic acid 150g / t, carry out cassiterite fine mud coarse selection flotation, add decyl salicylic hydroxamic acid 30g / t in the first sweep, add decyl salicyl hydroxamic acid in the second sweep Acid 15g / t; CMC 30g / t is added to the first selection, CMC 20g / t is added to the second selection, CMC 15g / t is added to the third selection, see the flotation process flow chart Figure 5 . The results of the flotation comparison test with salicylhydroxamic acid are shown in Table 3. It can be seen from Table 3 that compared with salicylic hydroxamic acid, the recovery rate of tin concentrate is increased by 5.85% and the dosage of medicament is reduced by 61.00% by using decyl salicylic...

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Abstract

The invention discloses a decyl salicylhydroxamic acid and application thereof. The chemical structure of the decyl salicylhydroxamic acid is shown as 1. The hyperconjugation structure of decyl and benzene rings in the molecular structure of the decyl salicylhydroxamic acid enables the benzene ring structure to have higher electronegativity. The nucleophilic ability of solid affinity groups of hydroxamic acid molecules is higher through the above double factors, so that collecting agent molecules are more liable to adsorb on the surfaces of target minerals. The hydrophilic and hydrophobic properties of the target minerals can be changed by the collecting agent molecules through longer hydrophobic structures more effectively, and the adhesion efficiency of bubbles and minerals is improved;for flotation of refractory oxidized ore, the usage amount of lead nitrate or other metal salt activators can be reduced, and the collecting agents are applicable for flotation of tungsten ore, rare earth ore and tin ore.

Description

technical field [0001] The present invention relates to salicyl hydroxamic acid compound and application thereof, in particular to decyl salicyl hydroxamic acid and application thereof. Background technique [0002] Hydroxamic acid (Hydroxamic acid) has a strong chelating ability to metal ions (Cu, Cr, Co, Fe, Mn, W, Sn), and is usually used as copper oxide ore, black and white tungsten ore, rare earth and tin ore in mineral engineering The flotation collector is used. [0003] [0004] It is not difficult to see that for refractory high specific gravity minerals, in order to better adjust the hydrophobicity of minerals with short carbon chain hydroxamic acid, it is necessary to increase the adsorption amount of collectors on the mineral surface to make the minerals sufficiently hydrophobic. This requires increasing the amount of collectors or increasing the number of localized ions on the surface of raw minerals, and excessive use of collectors or mineral activators has...

Claims

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Application Information

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IPC IPC(8): B03D1/01B03D101/02B03D103/02
CPCB03D1/01B03D2201/02B03D2203/02
Inventor 李方旭张发明林日孝刘进齐越超张辉蒋海勇郑少冰陈志杰
Owner 广东省资源综合利用研究所
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