CN109837385A - A kind of method that Rare Earth Mine is decomposed in heating melting conversion - Google Patents
A kind of method that Rare Earth Mine is decomposed in heating melting conversion Download PDFInfo
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- CN109837385A CN109837385A CN201910299819.5A CN201910299819A CN109837385A CN 109837385 A CN109837385 A CN 109837385A CN 201910299819 A CN201910299819 A CN 201910299819A CN 109837385 A CN109837385 A CN 109837385A
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- earth mine
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Abstract
The invention discloses a kind of heating meltings to convert the method for decomposing Rare Earth Mine, carbon materials (natural graphite, artificial graphite etc.) is added in intermediate frequency furnace or electric arc furnaces, the Rare Earth Mine of fluorine material is consolidated in the function melting supplying dephosphorization generated heat using carbon materials and generate electric arc fever.The present invention, which is not used, can generate the fever of alloy with rare earth and generate the material of arc heat, can effectively improve the recovery rate of rare earth oxide, while not generating pernicious gas and fluoride waste, can also recycle phosphorus, while environmentally friendly, save industrial cost.
Description
Technical field
The present invention relates to field of rare earth hydrometallurgy, and in particular to a kind of method that Rare Earth Mine is decomposed in heating melting conversion.
Background technique
Rare Earth Mine is rare earth resources important in the world, wherein dilute comprising mischmetal mine, fluorine carbon cerium mischmetal mine, monazite
Tu Kuang etc..
The smelting separation method multiplicity of rare earth element at present, the acid rare earth solution system being related to is also more, wherein sulfuric acid
With stability height, it is not volatile, it is weak to equipment corrosion the features such as be widely used in smelt separation process, such as baotite sulfuric acid
Roast method for converting and decomposing.The technique of rare-earth enrichment recovery is more universal in rare earth sulfate solution or mixed acid solution system, but with
The mode of sulfuric acid medium temperature roast carries out conversion resolution process to rare earth, is easy to produce hydrogen fluoride and a large amount of sulfide gas, simultaneously
Phosphorus is solidificated in non-rare earth slag and is abandoned, not only bad for environmental protection, and there are phosphate rock resource wastes.
In the industrial production frequently with method also packet sodium hydroxide method for converting and decomposing, sodium hydroxide method for converting and decomposing wants water
It washes conversion and decomposes Rare Earth Mine, a large amount of fluorine-containing harmful waste water can be generated.
In view of above-mentioned deficiency, one kind not generating pernicious gas, does not generate fluoride waste, while phosphorus can also be recycled
The method that Rare Earth Mine is decomposed in the conversion of Rare Earth Mine heating melting is badly in need of in current industry.
Summary of the invention
Based on above-mentioned analysis, the invention discloses one kind not to generate pernicious gas, does not generate fluoride waste, while can also incite somebody to action
The method that Rare Earth Mine is decomposed in the Rare Earth Mine heating melting conversion that phosphorus recycles.
Above-mentioned purpose in order to obtain, the invention adopts the following technical scheme:
A kind of method that Rare Earth Mine is decomposed in heating melting conversion, includes the following steps:
(1) it prepares mengite rare-earth mine ball: dephosphorization material being added in mengite rare-earth mine, it is standby that mengite rare-earth mine ball is made
With；
(2) Rare Earth Mine is decomposed in heating melting conversion: the carbon materials that 100kg generates electric arc being added into 1t electric arc furnaces, then will be only
It occupies stone Rare Earth Mine ball to be added in furnace, electrified regulation molten rare earth mine is come out of the stove after melting mengite rare-earth mine bubble and dispersing, must be turned
Change and decompose mengite rare-earth mine, converts resolution ratio 97.6%.
Further, the dephosphorization material is petroleum coke；The usage amount of the dephosphorization material is phosphorus in mengite rare-earth mine
2.5 times.
Further, the carbon materials are to forge one of rear stone pool coke, natural or artificial graphite or a variety of.
A kind of method that Rare Earth Mine is decomposed in heating melting conversion:
(1) it prepares Rare Earth Mine ball: dephosphorization material, solid fluorine material being added in mischmetal mine, it is spare to be mixed and made into Rare Earth Mine ball；
(2) Rare Earth Mine is decomposed in heating melting conversion: Rare Earth Mine ball is put into the 1t intermediate frequency furnace for adding diameter 20cm graphite rod,
Graphite rod produces temperature and melts ore after energization, comes out of the stove after ore high-temperature fusion bubble disperses, and obtains rare earth in Rare Earth Mine, conversion point
Solution rate 97.3%.
Further, the dephosphorization material is petroleum coke；The usage amount of the dephosphorization material is phosphorus in mengite rare-earth mine
2 times.
Further, the solid fluorine material is calcium carbonate；The usage amount of the solid fluorine material is phosphorus in mengite rare-earth mine
2 times.
The beneficial effects of the present invention are:
1, it with carbon materials heating melting method, is added without sulfuric acid and does not generate hydrogen fluoride gas and a large amount of sulfide gas, be not added
Enter sodium hydroxide and do not generate fluoride waste, moreover it is possible to phosphorus recycling is subjected to secondary use, save production cost.
2, using rare earth high conversion rate in Rare Earth Mine made from this method up to 97% or more.
Specific embodiment
Implement 1
By dephosphorization material petroleum coke by 2 times (by mass) of phosphorus, solid fluorine material calcium carbonate in Rare Earth Mine by 2 of fluorine in Rare Earth Mine
It is formulated into mischmetal mine (by mass) again, the mischmetal mine ball of dephosphorization and solid fluorine material will be prepared, be then placed in
The melting that is powered in the 1t intermediate frequency furnace of diameter 20cm graphite rod is added, is come out of the stove after ore high-temperature fusion bubble disperses, gained is dilute
Rare earth converts resolution ratio up to 97.3% in native mine.
Embodiment 2
Dephosphorization material petroleum coke is fitted in mengite rare-earth mine (by mass) by 2.5 times of phosphorus in mengite rare-earth mine and is made
Then the granular graphite 100kg for generating electric arc is first added in 1t electric arc furnaces, then mengite rare-earth mine ball is added in furnace and is powered by ball
Melting, comes out of the stove after melting mengite rare-earth mine bubble and dispersing, and rare earth conversion resolution ratio reaches in gained mengite rare-earth mine
97.6%。
The above is only highly preferred embodiment of the present invention, is not intended to limit the present invention in any form, and is appointed
What those skilled in the art, without departing from the scope of the technical proposal of the invention, using in the method for the disclosure above
Appearance makes many possible changes and modifications to technical solution of the present invention, is all within the protection scope of the claims.
Claims (6)
1. a kind of method that Rare Earth Mine is decomposed in heating melting conversion, which is characterized in that this method comprises the following steps:
(1) it prepares mengite rare-earth mine ball: dephosphorization material being added in mengite rare-earth mine, it is standby that mengite rare-earth mine ball is made
With；
(2) Rare Earth Mine is decomposed in heating melting conversion: the carbon materials that 100kg generates electric arc being added into 1t electric arc furnaces, then will be only
It occupies stone Rare Earth Mine ball to be added in furnace, electrified regulation molten rare earth mine is come out of the stove after melting mengite rare-earth mine bubble and dispersing, must be turned
Change and decompose mengite rare-earth mine, converts resolution ratio 97.6%.
2. the method according to claim 1, wherein the dephosphorization material is petroleum coke；The dephosphorization material
Usage amount is 2.5 times of phosphorus in mengite rare-earth mine.
3. the method according to claim 1, wherein the carbon materials be forge burnt rear stone pool, natural graphite or
One of artificial graphite is a variety of.
4. a kind of method that Rare Earth Mine is decomposed in heating melting conversion, it is characterised in that:
(1) it prepares Rare Earth Mine ball: dephosphorization material, solid fluorine material being added in mischmetal mine, it is spare to be mixed and made into Rare Earth Mine ball；
(2) Rare Earth Mine is decomposed in heating melting conversion: Rare Earth Mine ball is put into the 1t intermediate frequency furnace for adding diameter 20cm graphite rod,
Graphite rod produces temperature and melts ore after energization, comes out of the stove after ore high-temperature fusion bubble disperses, and obtains rare earth in Rare Earth Mine, conversion point
Solution rate 97.3%.
5. according to the method described in claim 4, it is characterized in that, the dephosphorization material is petroleum coke；The dephosphorization material
Usage amount is 2 times of phosphorus in mengite rare-earth mine.
6. according to the method described in claim 4, it is characterized in that, the solid fluorine material is calcium carbonate；The solid fluorine material
Usage amount is 2 times of phosphorus in mengite rare-earth mine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910299819.5A CN109837385A (en) | 2019-04-15 | 2019-04-15 | A kind of method that Rare Earth Mine is decomposed in heating melting conversion |
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| CN201910299819.5A CN109837385A (en) | 2019-04-15 | 2019-04-15 | A kind of method that Rare Earth Mine is decomposed in heating melting conversion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305366A (en) * | 2022-08-18 | 2022-11-08 | 李洪明 | Production method of rare earth silicate ore |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103967A (en) * | 1985-05-21 | 1986-09-03 | 包钢稀土一厂 | Rare earth concentrate pellet (or piece) ore heat furnace preparation rare-earth extract slag and contain the niobium ferrophosphorus |
| CN1071205A (en) * | 1992-10-27 | 1993-04-21 | 东北工学院 | The technology of preparation of rareearth ferro-silicon alloy by carbon thermal reduction to ore bearing O, C and Ce |
| CN103184332A (en) * | 2013-03-29 | 2013-07-03 | 四川省彭山宇力化工有限公司 | Method for roasting, converting and resolving fluorocarbon cerium rare earth mine by adding covering agent to calcium compound |
| JP2013199698A (en) * | 2012-03-26 | 2013-10-03 | Jx Nippon Mining & Metals Corp | Rare earth element concentration method from rare earth element-containing material |
| CN109252043A (en) * | 2018-10-19 | 2019-01-22 | 华卫国 | A kind of high melt method of bastnasite |
| CN109280781A (en) * | 2018-10-24 | 2019-01-29 | 李洪明 | A kind of method of decomposition and inversion Rare Earth Mine |
-
2019
- 2019-04-15 CN CN201910299819.5A patent/CN109837385A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103967A (en) * | 1985-05-21 | 1986-09-03 | 包钢稀土一厂 | Rare earth concentrate pellet (or piece) ore heat furnace preparation rare-earth extract slag and contain the niobium ferrophosphorus |
| CN1071205A (en) * | 1992-10-27 | 1993-04-21 | 东北工学院 | The technology of preparation of rareearth ferro-silicon alloy by carbon thermal reduction to ore bearing O, C and Ce |
| JP2013199698A (en) * | 2012-03-26 | 2013-10-03 | Jx Nippon Mining & Metals Corp | Rare earth element concentration method from rare earth element-containing material |
| CN103184332A (en) * | 2013-03-29 | 2013-07-03 | 四川省彭山宇力化工有限公司 | Method for roasting, converting and resolving fluorocarbon cerium rare earth mine by adding covering agent to calcium compound |
| CN109252043A (en) * | 2018-10-19 | 2019-01-22 | 华卫国 | A kind of high melt method of bastnasite |
| CN109280781A (en) * | 2018-10-24 | 2019-01-29 | 李洪明 | A kind of method of decomposition and inversion Rare Earth Mine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305366A (en) * | 2022-08-18 | 2022-11-08 | 李洪明 | Production method of rare earth silicate ore |
| CN115305366B (en) * | 2022-08-18 | 2024-06-11 | 李洪明 | Production method of rare earth silicate ore |
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Application publication date: 20190604 |