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Flotation process of ilmenite or bastnaesite

A bastnaesite and ilmenite technology, applied in flotation, solid separation, etc., can solve the problems that restrict the application and promotion of rare earth flotation technology, poor selectivity, and weak collection capacity

Active Publication Date: 2018-08-28
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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  • Flotation process of ilmenite or bastnaesite
  • Flotation process of ilmenite or bastnaesite
  • Flotation process of ilmenite or bastnaesite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: the preparation of paraben 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, and 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 methylparaben with the structure shown in formula-II into the free liquid, and then heat the reaction system in a constant temperature oil bath at 60°C for 4h. After the reaction is completed, acidify the obtained reaction solution with sulfuric acid to obtain paraben Gold hydroxamic acid crude product; Gained paraben hydroxamic acid crude product dissolves with dehydrated alcohol under 70 ℃ of conditions, then slowly drips 70 ℃ of distilled water, and constantly stirs, and stop dripping until it appears white insoluble matter, supplement Add a drop of a...

Embodiment 2

[0023] Embodiment 2: Paraben hydroxamic acid and other hydroxamic acids are compared to the flotation performance of bastnaesium single mineral

[0024] 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 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 5 and Table 6, 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 1 and Table 2.

Embodiment 3

[0025] Embodiment 3: Paraben hydroxamic acid and other hydroxamic acids are compared to the flotation performance of ilmenite single mineral

[0026] 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.

[0027] Table 1 hydroxamic acid to the flotation performance test research result (%) of bastnaesite single mineral

[0028]

[...

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Abstract

The invention relates to the technology of flotation, and particularly relates to a flotation process of ilmenite or bastnaesite. According to the process disclosed by the invention, a using amount ofa nipagin hydroximic acid collecting agent is more than or equal to 15g / t, and the granularity of ores is minus 0.074mm, occupying 60 percent to 100 percent; lime, sodium hydroxide or sodium carbonate is added to regulate pH of ore pulp to reach 4 to 12; water glass is an inhibitor, and a using amount of the inhibitor is 200g / t to 2000g / t; and MIBC (Methyl Isobutyl Carbinol) is a foaming agent, ausing amount of the MIBC is 10mg / L to 20mg / L, and the acting time is about 1 minute. The process disclosed by the invention is applied to flotation and refractory of fine-particle oxidized ores, andcan improve the flotation effect and mineral processing indexes. According to the process disclosed by the invention, medicament is reduced, and the mineral processing cost is reduced.

Description

technical field [0001] The invention relates to flotation technology, in particular to a flotation process of ilmenite or 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, especially for fine-grained rare earth ores that a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03D1/002B03D1/008B03D101/02B03D101/06B03D101/04B03D103/04
CPCB03D1/002B03D1/008B03D1/01B03D2203/04B03D2201/06B03D2201/04B03D2201/02
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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