Application method of aliphatics bis-hydroximic acid compound to mineral flotation

A technology of mineral flotation and application method, applied in the direction of flotation, solid separation, etc., can solve problems such as no research reports on flotation collectors, and achieve the effects of good coordination ability, promotion of adsorption, and high selectivity

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

AI Technical Summary

Problems solved by technology

[0005] At present, there is no research report on i

Method used

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  • Application method of aliphatics bis-hydroximic acid compound to mineral flotation
  • Application method of aliphatics bis-hydroximic acid compound to mineral flotation
  • Application method of aliphatics bis-hydroximic acid compound to mineral flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Application of aliphatic dihydroxamic acid collectors in flotation of scheelite and wolframite pure minerals

[0033] Put 2.0g of scheelite and wolframite pure minerals with a particle size of -0.074mm into a 40mL flotation tank, add 30mL of distilled water, stir for 1min to make it evenly mixed, add 2500g / t sodium carbonate to adjust the pH of the slurry and stir for 2min , then add 50g / t of lead nitrate and stir for 5 minutes, and finally carry out flotation under the condition that the amount of collector is 150g / t, and the foaming agent No. 2 oil is 15g / t. The flotation process flow chart is shown in figure 1 . Table 1 shows the flotation comparison test results of two kinds of aliphatic dihydroxamic acid collectors in the present invention and two commonly used collectors, benzyl hydroxamic acid and octyl hydroxamic acid. It can be seen from Table 1 that the collection ability of aliphatic dihydroxamic acid compounds on scheelite and wolframite is obvio...

Embodiment 2

[0036] Example 2: Application of dodecanediyl hydroxamic acid in scheelite flotation

[0037] A scheelite ore sample in Yunnan, the original ore contains WO 3 0.21%, grind the ore to -0.074mm to account for 80%, and the concentration of the flotation pulp is 27%, first add 50g / t of butyl xanthate, 36g / t of No. Under the conditions of 3000g / t, sodium silicate dosage 2500g / t, collector dosage 400g / t, and No. 2 oil 40g / t, a roughing operation is carried out on the sulfide ore tailings to obtain coarse tungsten concentrate, and the flotation process See flow chart figure 2 . Table 2 shows the flotation comparison test results of the aliphatic bishydroxamic acid collector dodecanedihydroxamic 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 hydroxamic acid, the aliphatic bishydroxamic acid collector dodecanedihydroxamic acid is used for primary roughing of sche...

Embodiment 3

[0041] Embodiment 3: the application of suberoyl hydroxamic acid in wolframite flotation

[0042] A black tungsten fine mud in Jiangxi, raw ore contains WO 3 3.68%, the particle size is -0.04mm, accounting for 92%, add water to adjust the slurry to a mass concentration of 25%, add 1500g / t sodium carbonate, water glass 600g / t, aluminum sulfate 200g / t, lead nitrate 400g / t, collector Dosage of 600g / t, No. 2 oil 60g / t, coarse flotation of black tungsten fine mud, sweeping and adding 100g / t collector, No. 2 oil 20g / t, adding water glass 300g / t, sulfuric acid Aluminum 100g / t, add water glass 90g / t, aluminum sulfate 30g / t for the second selection, add water glass 90g / t, aluminum sulfate 30g / t for the third selection, see the flotation process flow chart image 3 . Table 3 shows the flotation comparison test results of the aliphatic dihydroxamic acid collector suberoyl hydroxamic acid and the commonly used collector benzyl hydroxamic acid in the present invention. It can be seen f...

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Abstract

The invention provides an application method of an aliphatics bis-hydroximic acid compound to mineral flotation, and belongs to the technical field of mineral flotation. The aliphatics bis-hydroximic acid compound is expressed as the formula I: FORMULA; and in the formula I, R is alkylene containing 1-20 carbon atoms. The aliphatics bis-hydroximic acid compound serves as a collecting agent for flotation of scheelite, wolframite, scheelite and wolframite mixed ore, tin ore and rare earth ore, can enhance a chelating effect on metal oxidation minerals, promotes absorption of the collecting agent on the surfaces of the minerals, has such characteristics as high collecting capacity, high selectivity and low ore ton quantity, and is suitable for treating difficult-selected fine grain ore.

Description

technical field [0001] The invention relates to the technical field of mineral flotation, in particular to an application method of aliphatic bihydroxamic acid compounds in mineral flotation. Background technique [0002] In the flotation process of oxidized minerals, research on new and efficient flotation collectors is the key factor to improve the separation index. Common oxidized mineral flotation collectors include carboxylic acid collectors, hydroxamic acid collectors, arsine acid collectors and phosphonic acid collectors. Carboxylic acid collectors have strong collecting ability, but poor selectivity; both arsine and phosphonic acid collectors have certain toxicity, which will cause harm to the environment during use, and are difficult to be widely used in industrial production . Hydroxamic acid is a typical chelating agent with high selectivity for metal ions. Oxygen and nitrogen containing lone pairs of electrons and close to each other in its molecular structure...

Claims

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Application Information

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IPC IPC(8): B03D1/01B03D101/02B03D103/04
CPCB03D1/01B03D2201/02B03D2203/04
Inventor 黄志强黄万抚邱廷省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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