CN1076641A - The preparation technology of rare-earth foaming agent for flotation - Google Patents
The preparation technology of rare-earth foaming agent for flotation Download PDFInfo
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- CN1076641A CN1076641A CN 93110516 CN93110516A CN1076641A CN 1076641 A CN1076641 A CN 1076641A CN 93110516 CN93110516 CN 93110516 CN 93110516 A CN93110516 A CN 93110516A CN 1076641 A CN1076641 A CN 1076641A
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Abstract
The present invention relates to a kind of preparation technology of rare-earth foaming agent for flotation, at first preparing Synthetic 2-hydroxyl 3-2-methyl naphthoate, was solvent with 4-hydroxy-4-methyl pentanone-[2], 35 ℃ of-40 ℃ of following stirring reactions 4 hours, be cooled to 25 ℃ then, blowing promptly gets rare-earth foaming agent for flotation.This preparation technology is simple, and foamability is moderate in flotation, and the selectivity of swimming is good, and the rare earth grade and the rate of recovery improve, and are easy to reagent removal simultaneously, are convenient to sorting bastnaesite concentrate and monazite concentrate from mixed rare earth concentrates.
Description
The present invention relates to the preparation technology of the novel floatation frother of a kind of rare-earth mineral.
From Rare Earth Mine, reclaim mineral such as bastnaesite, monazite, must separate effectively with mineral such as the fluorite of association, calcite, barite, apatite, yet because mineral composition complexity, disseminated grain size is thin, bring very big difficulty for the recovery of rare-earth mineral, in recent years, the ore dressing of rare earth worker is devoted to seek the efficient foaming agent of rare-earth mineral always, cooperate existing rare earth catching agent H205, sort rare-earth mineral most effectively to reach.
1988, the rare earth foaming agent J102 flotation of high-grade mixed rare earth concentrates that the Baogang ore dressing plant adopts Zhangjiakou City beneficiation reagent factory to produce was achieved success, and on being applied to produce.The J102 foaming agent is that a kind of foamability is strong, and is very firm to the absorption of rare-earth mineral, but is difficult for desorb, thereby hindered the further processing that mixes high-grade RE concentrate.
As everyone knows, rare-earth smelting technology all is to adopt single fluoro-carbon-cerium ore concentrate or single monazite concentrate as raw material usually in the world, yet the high-grade RE concentrate that the Baogang ore dressing plant is produced in the past is the bulk concentrate of bastnaesite and monazite, therefore can not sell to external.In order to sort single bastnaesite concentrate and monazite concentrate, it is good just must to seek selectivity, is easy to the foaming agent of desorb.
It is moderate to the purpose of this invention is to provide a kind of foamability, and selectivity is good, is easy to the novel rare-earth floatation frother of desorb (being convenient to reagent removal), to be adapted to single bastnaesite concentrate and the monazite concentrate of sorting from mixed rare earth concentrates.
The present invention includes following steps:
(1) preparation Synthetic 2-hydroxyl 3-2-methyl naphthoate,
(a) take by weighing 50 kilograms of 2-hydroxyl 3-naphthoic acids and put into reactor, add 300 kilograms of methyl alcohol,
(b) start agitator, in reactor, add 5 kilograms of concentrated sulfuric acids,
(c) open steam valve, the temperature in the reactor risen to more than 65 ℃, and under this temperature back flow reaction 24 hours,
(d) after the reaction, be chilled to 55 ℃, put into the crystallization tank crystallization,
(e) leach crystallization, be 2-hydroxyl 3-2-methyl naphthoate,
(2) in reactor, add 1500 kilograms of solvent 4-hydroxy-4-methyl pentanone-(2),
(3) behind the startup agitator, add 2-hydroxyl 3-2-methyl naphthoate by the percentage 2-12 of gross weight,
(4) open steam valve, temperature of charge is risen to 35 ℃-40 ℃, reaction is 4 hours under this temperature,
(5) be cooled to 25 ℃, blowing promptly gets rare-earth foaming agent for flotation.
The rare-earth foaming agent for flotation of the present invention's preparation is compared with foaming agent J102, and technology is simple, and foamability is moderate in flotation, the selectivity of swimming is good, the rare earth grade and the rate of recovery improve, and are easy to reagent removal simultaneously, are convenient to sorting bastnaesite concentrate and monazite concentrate from mixed rare earth concentrates.
Embodiment 1
(1) preparation Synthetic 2-hydroxyl 3-2-methyl naphthoate,
(a) take by weighing 50 kilograms of 2-hydroxyl 3-naphthoic acids and put into 1000 liters of enamel reaction stills, add 300 kilograms of methyl alcohol,
(b) start agitator, slowly in reactor, add 5 kilograms of concentrated sulfuric acids,
(c) open steam valve, the temperature in the reactor risen to more than 65 ℃, and under this temperature back flow reaction 24 hours,
(d) after the reaction, be chilled to 55 ℃, put into the crystallization tank crystallization,
(e) leach crystallization, be 2-hydroxyl 3-2-methyl naphthoate,
(2) in 3000 liters of enamel reaction stills, add 1500 kilograms of solvent 4-hydroxy-4-methyl pentanone-(2),
(3) behind the startup agitator, slowly add 150 kilograms of 2-hydroxyl 3-2-methyl naphthoates,
(4) open steam valve, temperature of charge is risen to 35 ℃-40 ℃, reaction is 4 hours under this temperature,
(5) be cooled to 25 ℃, blowing promptly gets rare-earth foaming agent for flotation.
Two kinds of foaming agent comparative test result are as shown in the table
The small-sized beneficiation test index contrast of table I and J102
| The foaming agent title | Give ore deposit grade (REO%) | Concentrate yield (%) | Concentrate grade (REO%) | The concentrate rate of recovery (%) |
| Rare-earth foaming agent for flotation | 10.07 | 11.77 | 59.67 | 69.72 |
| J102 | 10.49 | 11.67 | 58.08 | 65.71 |
Table II and the contrast of J102 industry beneficiation test index
| The foaming agent title | Give ore deposit grade (REO%) | Concentrate yield (%) | Concentrate grade (REO%) | The concentrate rate of recovery (%) |
| Rare-earth foaming agent for flotation | 8.83 | 8.42 | 57.86 | 53.17 |
| J102 | 10.58 | 9.10 | 55.31 | 37.12 |
Embodiment 2
(1) preparation Synthetic 2-hydroxyl 3-2-methyl naphthoate is with embodiment 1
(2) in 3000 liters of enamel reaction stills, add 1500 kilograms of 4-hydroxy-4-methyl pentanone-(2),
(3) behind the startup agitator, slowly add 60 kilograms of 2-hydroxyl 3-2-methyl naphthoates,
(4) open steam valve, temperature of charge is risen to 35 ℃-40 ℃, reaction is 4 hours under this temperature,
(5) be cooled to 25 ℃, blowing promptly gets rare-earth foaming agent for flotation.
Claims (1)
1, a kind of preparation technology of rare-earth foaming agent for flotation is characterized in that this technology comprises the steps:
(1) preparation Synthetic 2-hydroxyl 3-2-methyl naphthoate,
(a) take by weighing 50 kilograms of 2-hydroxyl 3-naphthoic acids and put into reactor, add 300 kilograms of methyl alcohol,
(b) start agitator, in reactor, add 5 kilograms of concentrated sulfuric acids,
(c) open steam valve, the temperature in the reactor risen to more than 65 ℃, and under this temperature back flow reaction 24 hours,
(d) after the reaction, be chilled to 55 ℃, put into the crystallization tank crystallization,
(e) leach crystallization, be 2-hydroxyl 3-2-methyl naphthoate,
(2) in reactor, add 1500 kilograms of solvent 4-hydroxy-4-methyl pentanone-[2],
(3) behind the startup agitator, add 2-hydroxyl 3-2-methyl naphthoate by the percentage 2-12 of gross weight,
(4) open steam valve, temperature of charge is risen to 35 ℃-40 ℃, reaction is 4 hours under this temperature,
(5) be cooled to 25 ℃, blowing promptly gets rare-earth foaming agent for flotation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93110516 CN1076641A (en) | 1993-01-08 | 1993-01-08 | The preparation technology of rare-earth foaming agent for flotation |
| CN 93111714 CN1031866C (en) | 1993-01-08 | 1993-08-19 | Foaming agent for flotation of rare-earth ore and its method for prepn. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93110516 CN1076641A (en) | 1993-01-08 | 1993-01-08 | The preparation technology of rare-earth foaming agent for flotation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1076641A true CN1076641A (en) | 1993-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 93110516 Pending CN1076641A (en) | 1993-01-08 | 1993-01-08 | The preparation technology of rare-earth foaming agent for flotation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524670A (en) * | 2009-04-03 | 2009-09-09 | 包头市林峰稀土化工有限公司 | Rare earth collector |
-
1993
- 1993-01-08 CN CN 93110516 patent/CN1076641A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524670A (en) * | 2009-04-03 | 2009-09-09 | 包头市林峰稀土化工有限公司 | Rare earth collector |
| CN101524670B (en) * | 2009-04-03 | 2013-07-24 | 包头市林峰稀土化工有限公司 | Rare earth collector |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C03 | Withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |