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Rare earth collector

A collector and rare earth technology, applied in the field of rare earth collectors, can solve the problems of difficulty in selecting high-grade rare earth concentrates with environmental protection requirements, large dosage of chemicals, poor selectivity, etc., and achieves low cost, simple addition of chemicals, and adaptability. strong effect

Active Publication Date: 2009-09-09
NEIMENGGU BAOGANG RARE EARTH LINFENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the currently available rare earth mineral flotation reagents are single-component, and the single-component rare earth flotation reagent has only a single performance, which not only has high cost, poor selectivity, large dosage of reagents, many dosing points, difficult production operation, but also difficult to select High-grade rare earth concentrates required by environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The present invention is made up of the weight percent of following material:

[0016] 1-Naphthyl hydroxamic acid 40%

[0017] Salicylaldoxime 20%

[0018] β-furfural oxime 40%.

[0019] Weigh 1-naphthoic acid 300kg and put it into 3m 3 Add 600kg methanol and 90kg concentrated sulfuric acid to the enamel reaction kettle (with stainless steel reflux condenser), heat and reflux for 36 hours, put it into the crystallization tank for natural crystallization for 48 hours, and take out the crystals.

[0020] Weigh 300kg of the above crystals, then take 150kg of salicylaldehyde and 300kg of β-furfural, and put them into 3m 3 Add 1200kg of water to the enamel reaction kettle, then add 200kg of hydroxylamine hydrochloride, raise the temperature to 35°C-55°C for 5 hours, add 30% liquid alkali dropwise during the reaction, and keep the pH=10 all the time, cool to 30°C to dilute after the reaction Sulfuric acid (25%) is acidified to pH=5, and put into a 200-liter plastic bucket...

Embodiment 2

[0027] The present invention is made up of the weight percent of following material:

[0028] 1-Naphthyl hydroxamic acid 60%

[0029] Salicylaldoxime 10%

[0030] β-furfural oxime 30%.

[0031] Take by weighing 1-naphthoic acid 450kg and put into 3m 3 Add 700kg of methanol and 110kg of concentrated sulfuric acid to the enamel reaction kettle (with stainless steel reflux condenser), heat and reflux for 36 hours, put it into the crystallization tank for natural crystallization for 48 hours, and take out the crystals.

[0032] Weigh 450kg of the above crystals, then take 75kg of salicylaldehyde and 300kg of β-furfural, and put them into 3m 3 Add 1300kg of water to the enamel reaction kettle, then add 280kg of hydroxylamine hydrochloride, raise the temperature to 35°C-55°C for 5 hours, add 30% liquid caustic dropwise during the reaction, keep the pH=10, cool to 30°C to dilute after the reaction Sulfuric acid (25%) is acidified to pH=5, and put into a 200-liter plastic bucket t...

Embodiment 3

[0038] The present invention is made up of the weight percent of following material:

[0039] 1-Naphthyl hydroxamic acid 55%

[0040] Salicylaldoxime 13%

[0041] β-furfural oxime 32%. (Please remove the red below for me)

[0042] Take by weighing 1-naphthoic acid 410kg and put into 3m 3 Add 1000kg methanol and 100kg concentrated sulfuric acid to the enamel reaction kettle (with stainless steel reflux condenser), heat and reflux for 36 hours, put it into the crystallization tank for natural crystallization for 48 hours, and take out the crystals.

[0043] Weigh 410kg of the above crystals, then take 100kg of salicylaldehyde, 240kg of β-furfural, and put them into 3m 3 Add 1300kg of water to the enamel reaction kettle, then add 300kg of hydroxylamine hydrochloride, raise the temperature to 35°C-55°C for 5 hours, add 30% liquid caustic dropwise during the reaction, keep the pH=10 all the time, cool to 30°C to dilute after the reaction Sulfuric acid (25%) is acidified to pH=...

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Abstract

The invention relates to a rare earth collector, in particular to a floatation rare earth mineral. The rare earth collector consists of the materials with the weight percentage as follows: 30-70 % of 1-naphthyl hydroxamic acid, 8-20 % of salicylaldoxime and 20-40 % of beta-furfural oxime. The rare earth collector is confected by a method as follows: (1) the 1-naphthyl hydroxamic acid is put in an enamel reactor and then is added with methanol and strong sulfuric acid to be put in a crystallizer tank for natural crystallization after heating reflux; (2) crystal, salicylal and beta-fufural are put into the enamel reactor and added with water and hydroxylamine hydrochloride to be heated to 35 DEG C to 55 DEG C for 5 hours; 30 percent liquid alkali is dipped during the reaction to keep pH at 10 always; after the reaction, solution is cooled to 30 DEG C, and 25 percent dilute sulphuric acid is added for acidifying, until the pH value equals to 5; and a product is put in a plastic bucket, and the product is the rare earth collector. The invention has less medicament dosage, low cost, simple medicament addition, strong adaptability, good selectivity and the strong ability of the collector.

Description

1. Technical field [0001] The invention relates to a rare earth collector, in particular to a flotation rare earth mineral. 2. Background technology [0002] my country is very rich in rare earth resources, and the proven rare earth reserves account for about 80% of the world's total reserves. The main method for selecting rare earth minerals from rare earth-containing ores is flotation. [0003] Most of the currently available rare earth mineral flotation reagents are single-component, and the single-component rare earth flotation reagent has only a single performance, which not only has high cost, poor selectivity, large dosage of reagents, many dosing points, difficult production operation, but also difficult to select High-grade rare earth concentrates required by environmental protection. 3. Contents of the invention [0004] The object of the present invention is to provide a rare earth collector with small dosage, low cost, simple operation, strong adaptability, g...

Claims

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Application Information

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IPC IPC(8): B03D1/008B03D101/02B03D103/02
Inventor 肖江
Owner NEIMENGGU BAOGANG RARE EARTH LINFENG TECH
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