Application method of ester-based hydroximic acid collecting agent to mineral flotation

A technology of ester-based hydroxamic acid and ester-based hydroxamic acid, which is applied in the field of application of ester-based hydroxamic acid collectors in mineral flotation, to achieve the effects of low toxicity, environmental friendliness, and good biodegradability

Active Publication Date: 2017-02-22
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no report about ester hydroxamic a

Method used

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  • Application method of ester-based hydroximic acid collecting agent to mineral flotation
  • Application method of ester-based hydroximic acid collecting agent to mineral flotation
  • Application method of ester-based hydroximic acid collecting agent to mineral flotation

Examples

Experimental program
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Effect test

Example Embodiment

[0039] Example 1: Application of 7-Carboethylheptyl Hydroxamic Acid in Rare Earth Ore Flotation

[0040] The ore in a shaker contains 9.25% rare earth REO. Grind the ore to -0.074mm, which accounts for 86%. The concentration of flotation slurry is 30%. Add 1200g / t sodium carbonate, 700g / t water glass, and 2000g / t collector. , No. 2 oil 70g / t, carry out rare earth flotation, add 300g / t collector for scavenging, 25g / t No. 2 oil, add 300g / t water glass for first selection, add 100g water glass for second selection / t, see the flotation process flow chart figure 1 . The flotation comparison test results of the ester hydroxamic acid collector 7-carbethoxyheptyl hydroxamic acid in the present invention and the commonly used collector salicylic hydroxamic acid are shown in Table 1. It can be seen from Table 1 that compared with the commonly used collector salicylic hydroxamic acid, the use of ester-based hydroxamic acid collector 7-carboethyl heptyl hydroxamic acid increases the recove...

Example Embodiment

[0043] Example 2: Application of 7-n-pentyl heptyl hydroxamic acid in flotation of ilmenite

[0044] An ilmenite containing TiO 2 22.24%, the ore is ground to -0.074mm to account for 60%, the flotation slurry concentration is 30%, 1800g / t sulfuric acid is added, the amount of collector is 450g / t, No. 2 oil is 80g / t, and ilmenite is coarsely separated. Select, add 50g / t collector for sweep selection, 20g / t for No. 2 oil, add 900g / t sulfuric acid for first selection, add 700g / t sulfuric acid for second selection, add 500g / t sulfuric acid for third selection, and add sulfuric acid 500g / t for fourth selection. Optional addition of 300g / t sulfuric acid, see the flotation process flow chart figure 2 . Table 2 shows the flotation comparison test results of the ester hydroxamic acid collector 7-n-pentyl heptyl hydroxamic acid and the commonly used collector octyl hydroxamic acid in the present invention. It can be seen from Table 2 that compared with the commonly used collector octyl ...

Example Embodiment

[0047] Example 3: Application of 7-n-tridecyl heptyl hydroxamic acid in flotation of scheelite

[0048] Put 3.0g of pure scheelite mineral with a particle size of -0.074mm in a 40mL flotation tank, add 30mL of distilled water, stir for 1min to make it evenly mixed, add 3000g / t sodium carbonate to adjust the slurry pH and stir for 2min, and then collect Flotation is carried out under the conditions of 200g / t and 20g / t of foaming agent No. 2 oil. See the flotation process flow chart image 3 . The flotation comparison test results of the ester hydroxamic acid collector 7-n-tridecyl heptyl hydroxamic acid and the commonly used collector octyl hydroxamic acid and benzhydroxamic acid are shown in the table 3. It can be seen from Table 3 that the collection capacity of ester hydroxamic acid collector 7-n-tridecyl heptyl hydroxamic acid for scheelite is obviously stronger than the two commonly used hydroxamic acid collectors.

[0049] Table 3 Comparison results of collector flotation sc...

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Abstract

The invention provides an application method of an ester-based hydroximic acid collecting agent to mineral flotation, and belongs to the technical field of mineral flotation. The structure of the ester-based hydroximic acid collecting agent is shown in the formula I shown in the specification, wherein in the formula I, R is a C1-C17 alkane base or C2-C17 alkylene. Due to the fact that the molecule of the ester-based hydroximic acid collecting agent contains an ester base and a hydroximic acid base, more ligating atoms and more coordinating groups are obtained, through chelation and metal ions, the more stable complex compound can be formed or strong adsorption is formed on the surfaces of metal oxide minerals, and floatation recycling of rare earth ores, titanic iron ores, scheelite, wolframite, scheelite and wolframite mixture ores or tin ores ca be strengthened; compared with an existing hydroximic acid collecting agent, due to the fact that the ester base exists in the molecule, the beneficial effects of being good in biodegradability, small in poisonousness and friendly to the environment are achieved.

Description

technical field [0001] The invention relates to the technical field of mineral flotation, in particular to an application method of an ester-based hydroxamic acid collector in mineral flotation. Background technique [0002] Hydroxamic acid has been used as a mineral flotation agent for nearly 70 years, and plays an important role in the field of mineral flotation. Or tin ore and other flotation applications are the most. [0003] At present, the hydroxamic acids used as flotation collectors mainly include aliphatic hydroxamic acid, benzyl hydroxamic acid and salicylic hydroxamic acid. Sreenivas T et al. studied the flotation performance and adsorption characteristics of aliphatic hydroxamic acid (see structural formula a) on tin ore (Colloid and Surfaces A: Physicochemical and Engineering Aspects, 2002, 205(1-2): 47-59). Qiu Xianyang et al. used benzyl hydroxamic acid (see structural formula b) as a collector to float scheelite and studied the chemical properties of the s...

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魏新安王浩林王强强
Owner JIANGXI UNIV OF SCI & TECH
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