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Application of allyl benzene hydroximic acid in ilmenite and bastnaesite flotation

A technology of phenylpropenyl hydroxamic acid and propenyl hydroxamic acid, which is applied in the field of application of phenylpropenyl hydroxamic acid in ilmenite and bastnaesite flotation, can solve the problems that restrict the application of rare earth flotation technology and Promotion, weak harvesting capacity, high cost of chemicals, etc., to achieve the effect of reducing the burden on workers, strong nucleophilicity, and reducing the cost of beneficiation

Active Publication Date: 2018-09-07
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the collectors used in the flotation of rare earth minerals have problems and deficiencies such as sensitivity to slime, weak collection capacity, poor selectivity, and high reagent cost, which seriously restrict the application and promotion of rare earth flotation technology

Method used

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  • Application of allyl benzene hydroximic acid in ilmenite and bastnaesite flotation
  • Application of allyl benzene hydroximic acid in ilmenite and bastnaesite flotation
  • Application of allyl benzene hydroximic acid in ilmenite and bastnaesite flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: the preparation of phenylpropenyl hydroxamic acid

[0020] Pour 90mL of distilled water into a 500mL three-necked flask, heat at a constant temperature in an oil bath at 30°C, condense and reflux at room temperature; first take 8.34 parts of hydroxylamine hydrochloride and add it to the three-necked flask, then add 8.8 parts of sodium hydroxide in batches, and the reaction time is 30 minutes; Fully free; add methyl phenylacrylate with the structure shown in formula-II into the free liquid, and then heat the reaction system in a constant temperature oil bath at 50°C for 4 hours. After the reaction, the resulting reaction solution is acidified with sulfuric acid to obtain phenylpropenyl The crude product of hydroxamic acid; the crude product is dissolved in hot water, cooled, filtered, and purified repeatedly 2 to 3 times to obtain high-purity phenylpropenyl hydroxamic acid. The reaction process is shown in formula-Ⅲ.

[0021]

Embodiment 2

[0022] Embodiment 2: the flotation performance comparison of phenylpropenyl hydroxamic acid collector and other hydroxamic acid collectors to bastnaesic single mineral

[0023] The feed particle size of bastnaesium single mineral is 0.074mm~0.038mm. First, add 2g of pure minerals and 35mL of distilled water to the flotation tank, stir and adjust the slurry for 1min; then use hydrochloric acid or NaOH to adjust the pH of the slurry to the set value, and stir for 2min; then, add collector hydroxamic acid in sequence for 3min , foaming agent MIBC15mg / L, action time 1min, and finally inflated and scraped for 5min; after the flotation test, the foam product was filtered, dried, weighed, and the recovery rate was calculated. The detailed test process and pharmaceutical system are as follows: figure 1 As shown, the test results are shown in Table 1 and Table 2.

[0024] Table 1 hydroxamic acid to the flotation performance test research result (%) of bastnaesite single mineral

[0...

Embodiment 3

[0028] Embodiment 3: the flotation performance comparison of phenylpropenyl hydroxamic acid collector and other hydroxamic acid collectors to ilmenite single mineral

[0029] The particle size of ilmenite feed is 0.074mm~0.038mm. First, add 2g of pure minerals and 35mL of distilled water to the flotation cell, stir and adjust the slurry for 1min; then use hydrochloric acid or NaOH to adjust the pH of the slurry to the value set in Table 7 and Table 8, and stir for 2min; then, add the collector hydroxime in sequence Acid, action time 3min, foaming agent MIBC15mg / L, action time 1min, and finally inflated and scraped for 5min; after the flotation test, the foam product was filtered, dried, weighed, and the recovery rate was calculated. The detailed test process and pharmaceutical system are as follows: figure 1 As shown, the test results are shown in Table 3 and Table 4.

[0030] Table 3 hydroxamic acid is to the flotation performance test research result (%) of ilmenite pure m...

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Abstract

The invention relates to the field of flotation, in particular to application of allyl benzene hydroximic acid in ilmenite and bastnaesite flotation. The allyl benzene hydroximic acid is applied to flotation of ilmenite or bastnaesite. According to the flotation technological condition, the dosage of collecting agent allyl benzene hydroximic acid is larger than r equal to 15 g / t, the ore particlesize is -0.074 mm, ore accounts for 60-100%, the pH of ore slurry is adjusted to 4-12 by adding lime, sodium hydroxide or sodium carbonate, water glass serves as an inhibitor with the dosage being 200-2000 g / t, MIBC serves as a foaming agent with the dosage being 10-20 mg / L, and the action time is about 1 min. According to application of the allyl benzene hydroximic acid in ilmenite and bastnaesite flotation, operation is easy, the burden of workers is relieved, the agents are saved, and the ore flotation cost is reduced.

Description

technical field [0001] The invention relates to the field of flotation, in particular to the application of phenylpropenylhydroxamic acid in the flotation of ilmenite and bastnaesite. Background technique [0002] Rare earth metals are called "vitamins" and are widely used in energy, aerospace, military, information, electronics, machinery and other fields. At present, global rare earth resources mainly come from bastnaesite, monazite and ion-adsorption rare earth ores in southern my country. my country's rare earth resource reserves and output rank first in the world, and my country's rare earth resources are mainly stored in bastnaesite. my country's rare earth beneficiation technology has made some achievements after decades of research and development, but there are still some problems and deficiencies, such as low resource recovery rate, high processing cost, and poor quality of concentrate. Flotation is one of the main beneficiation methods for rare earth minerals, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03B1/04B03D101/02B03D103/04B03D101/00
CPCB03B1/04B03D1/01B03D2201/02B03D2201/007B03D2203/04
Inventor 余新阳王礼平胡琳琪王浩林王强强黄志强何桂春
Owner JIANGXI UNIV OF SCI & TECH
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