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Application method of aromatic dihydroximic acid compound to mineral flotation

A mineral flotation and application method technology, applied in flotation, solid separation, etc., to achieve the effect of good selectivity, strong chelation ability and high selectivity

Inactive Publication Date: 2017-04-05
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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  • Application method of aromatic dihydroximic acid compound to mineral flotation
  • Application method of aromatic dihydroximic acid compound to mineral flotation
  • Application method of aromatic dihydroximic acid compound to mineral flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: the application of phthalyl hydroxamic acid in the flotation of fluorite ore

[0035] A fluorite ore contains CaF 2 21.20%, grind the ore to -0.074mm to account for 60%, add water to adjust the slurry to a mass concentration of 30%, add 1500g / t sodium carbonate, water glass 400g / t, aromatic dihydroxamic acid compound phthaloyl The dosage of hydroxamic acid is 60g / t and the dosage of oxidized paraffin wax soap 733 is 240g / t, and the rough separation and flotation of fluorite ore are carried out, and 200g / t of water glass is added in the first selection, and water glass is added in the second selection to the sixth selection Each 100g / t, flotation process flow chart see figure 1 . Table 1 shows the flotation results of fluorite ore when the aromatic dihydroxamic acid compound phthalyl hydroxamic acid and oxidized paraffin wax soap 733 are used in combination in the present invention. As can be seen from Table 1, compared with the combination of benzoyl h...

Embodiment 2

[0038] Embodiment 2: the application of terephthaloyl hydroxamic acid in rare earth ore flotation

[0039] A rare earth strong magnetic medium ore contains 8.41% REO, the ore is ground to -0.074mm to account for 85%, the concentration of the flotation pulp is 30%, adding 1600g / t sodium carbonate, 600g / t water glass, and 1800g / t collector , No. 2 oil 65g / t, conduct rare earth roughing flotation, add 300g / t collector for sweeping, No. 2 oil 30g / t, add water glass 400g / t for the first selection, add water glass 200g for the second selection / t, flotation process flow chart see figure 2 . Table 2 shows the flotation comparison test results of the aromatic bishydroxamic acid compound terephthalyl hydroxamic acid and the commonly used collector salicylyl hydroxamic acid in the present invention. It can be seen from Table 2 that compared with the common collector salicylic hydroxamic acid, the recovery rate of REO in the rare earth concentrate increased by 4.92 percentage points b...

Embodiment 3

[0042] Embodiment 3: the application of phthalyl hydroxamic acid in scheelite flotation

[0043] A scheelite ore sample, the original ore contains WO 3 0.669%, grind the ore to -0.074mm to account for 78%, and the concentration of the flotation pulp is 30%, first add 80g / t of butyl xanthate, 50g / t of No. 3200g / t, the dosage of water glass is 2600g / t, the dosage of aromatic dihydroxamic acid compound phthalyl hydroxamic acid is 100g / t and the dosage of oxidized paraffin wax soap 733 is 700g / t, and the rougher flotation of scheelite is carried out. Add 30g / t of aromatic dihydroxamic acid compound phthalyl hydroxamic acid and 210g / t of oxidized paraffin wax soap 733 in sweeping selection, add water glass 1000g / t in the first selection, and add water glass in the second selection 500g / t, flotation process flow chart see image 3. Table 3 shows the flotation results of scheelite when the aromatic dihydroxamic acid compound phthalyl hydroxamic acid and oxidized paraffin wax soap...

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Abstract

The invention provides an application method of an aromatic dihydroximic acid compound to mineral flotation and belongs to the technical field of mineral flotation. The aromatic dihydroximic acid compound as shown in the formula I is used as a collecting agent in flotation of a fluorite ore, a rare earth ore, a tungstite, a wolframite or a tungstite and wolframite mixed ore. A formula I is as shown in the specification, wherein a hydroximic acid group is located on an o-position, a meta-position or a para-position of the hydroximic acid group on a benzene ring. When being used as the collecting agent, the aromatic dihydroximic acid compound is stronger in metal element chelating capacity and better in target mineral selectivity because double hydroximic acid groups, namely two mineral philic groups exist in a molecule of the aromatic dihydroximic acid compound; the two hydroximic acid groups are directly connected with the benzene ring to form a large conjugated structure, so that the electron cloud density is higher, the nucleophilicity of the aromatic dihydroximic acid compound and metal is strong, and the aromatic dihydroximic acid compound more easily undergoes chelation and coordination reactions with the metal as comparison with the hydroximic acid without the conjugated structure; and compared with the common flotation collecting agent in the prior art, the aromatic dihydroximic acid compound has the characteristic of effectively increasing the flotation efficiency, the metal recovery rate and the like.

Description

technical field [0001] The invention relates to the technical field of mineral flotation, in particular to an application method of an aromatic bishydroxamic acid compound in mineral flotation. Background technique [0002] Hydroxamic acid compounds are typical chelating agents with high selectivity for metal ions. Hydroxamic acid and its salts have been widely used in oxide ore flotation because of the oxygen and nitrogen containing lone pair electrons in its molecular structure and the positions are close to each other, so that it can chelate with metal ions to form stable chelates. Collectors, common target minerals include fluorite, rare earth, scheelite, black tungsten, cassiterite, malachite, hematite, etc., which have achieved a relatively ideal separation effect, and are a promising oxidized mineral floating Choose a collector. [0003] Hydroxamic acids containing aromatic groups used in oxidized mineral flotation mainly include benzohydroxamic acid and salicylic h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D1/018B03D101/02B03D103/02
CPCB03D1/02B03D1/018B03D2201/02B03D2203/02
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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