CN104726703A - Method for leaching scandium from scandium-rich material by preheating-multistep pressurization - Google Patents
Method for leaching scandium from scandium-rich material by preheating-multistep pressurization Download PDFInfo
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- CN104726703A CN104726703A CN201510151092.8A CN201510151092A CN104726703A CN 104726703 A CN104726703 A CN 104726703A CN 201510151092 A CN201510151092 A CN 201510151092A CN 104726703 A CN104726703 A CN 104726703A
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- scandium
- rich
- leaching
- preheating
- vitriol oil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a method for leaching scandium from a scandium-rich material by preheating-multistep pressurization, which comprises the following steps: grinding the scandium-rich material until the particles with less than 100 meshes account for 95% above, adjusting the pulp concentration to 40-46%, injecting into a reaction kettle, preheating to 90 DEG C under the pressure in the kettle of 0.3 MPa, injecting 98% concentrated sulfuric acid which is 1.1 times by weight of the powder into the reaction kettle under the pressure of 0.7-0.8 MPa, keeping the temperature at 120-160 DEG C for 3-6 hours, lowering the temperature in the reaction kettle to 90 DEG C, filtering to obtain a scandium-containing leach solution and leached mud, and using the leach solution as the raw material for further scandium extraction. The technique for leaching scandium from the scandium-rich material has the characteristics of high leaching rate, low energy consumption, low cost and the like. The whole process is simple and easy to implement, and can be widely popularized and applied conveniently.
Description
Technical field
The present invention relates to a kind of method from rich scandium material mesohigh Leaching of Scandium, belong to the category of hydrometallurgy.
Background technology
Scandium belongs to heavy rare earth metal element, and chemical property is very special, and scandium is a kind of rare and scatter element, and the Independent Mineral of scandium is few, and very rare at occurring in nature.Scandium can be used for the fields such as new type electro source material, novel aluminum scandium alloy and special cermacis, and purposes widely.Scandium resource is more rare and extract very difficult, so the price of scandium is higher, significantly limit the application of scandium.Most scandium mainly exists in some mineral with the form of isomorph or ionic adsorption, such as, and vanadium titano-magnetite, bauxite, zircon, tungsten ore, the saturating stone of sudden strain of a muscle etc.The research that current employing extract technology extracts scandium from scandium-containing mineral is more, and such as application number is 201110267777.0 and 201310131177.0 etc. is all adopt the mode leached from scandium-containing mineral, extract scandium, and cost is higher, significantly limit its application.
Summary of the invention
The present invention, on the basis optimizing prior art, proposes a kind of leaching from rich scandium material and extracts the method for scandium, solves that scandium leaching yield in prior art is low, high in cost of production problem, is easy to realize suitability for industrialized production.
For achieving the above object, the invention provides following technical scheme:
Adopt a method for preheating-stepped pressure Leaching of Scandium from rich scandium material, comprise the following steps:
1) rich scandium material is less than 100 orders through being milled to granularity;
2) fine ore is sized mixing, and pulp density is adjusted to 40 ~ 46%;
3) ore pulp is injected autoclave, and the 0.2 ~ 0.3MPa that pressurizes, be warming up to 90 DEG C;
4) adopt the mode of pressurization, under the pressure of 0.7 ~ 0.8MPa, inject the vitriol oil instantaneously;
5) utilize the vitriol oil to meet the principle of water heat release, in autoclave, temperature rises to more than 150 DEG C instantaneously, keeps temperature 120 ~ 150 DEG C in autoclave, soaking time 3 ~ 6h;
6) ore pulp after leaching after filtration, obtains leach liquor and leached mud, and leach liquor is for containing scandium solution;
As the further scheme of the present invention, step 1) described in rich scandium material be Sc
2o
3content reaches the rich scandium material of 80 ~ 200g/t.
As the further scheme of the present invention, step 3) and 4) described in pressuring method be that air compressor injects air pressurized.
As the further scheme of the present invention, step 4) described in vitriol oil concentration be 98%, the 1.1:1 that the described vitriol oil and described fine ore weight ratio are.
As the further scheme of the present invention, step 6) described in filter when referring to that in autoclave, temperature is cooled to below 90 DEG C and filter.
Compared with prior art, the invention has the beneficial effects as follows: 1, the present invention just can obtain the leaching yield being greater than 88% under the condition adopting thicker material, saves ore grinding cost greatly; 2, the heat needed for pre-heating technique that the present invention adopts can be provided by reactor process of cooling, has saved the consumption of the energy; 3, leaching required high temperature in the present invention is meet water heat release by the vitriol oil provided, and without the need to indirect heating, only has holding stage to need the energy consumed; 4, leaching agent of the present invention is the vitriol oil, and transport stores all more convenient, and facility investment is few.
Accompanying drawing explanation
Fig. 1 is the method flow diagram adopting preheating-stepped pressure Leaching of Scandium from rich scandium material.
Embodiment
Embodiment 1
A, by Sc
2o
3content is the rich scandium material of 82.6g/t, joins in wet-type ball mill when pulp density is 55%, is milled to be less than 100 object materials and to account for 96.73%;
B, ore grinding ore pulp is out regulated concentration to 41.5%, then ore pulp is injected autoclave;
C, in reactor pressurization inject air, make still internal pressure reach 0.3MPa, and be preheated to 90 DEG C;
D, the vitriol oil of fine ore weight 1.1 times is added in acid adding tank, inject the vitriol oil when 0.7MPa to reactor, and make reacting kettle inner pressure remain to 0.7MPa;
E, maintenance temperature in the kettle 130 DEG C, soaking time 4h;
F, filter when temperature in the kettle is reduced to 90 DEG C, obtain containing scandium leach liquor and leached mud, now leaching yield is 88.19%.
Embodiment 2
A, by Sc
2o
3content is the rich scandium material of 82.6g/t, joins in wet-type ball mill when pulp density is 55%, is milled to be less than 100 object materials and to account for 98.22%;
B, ore grinding ore pulp is out regulated concentration to 45.5%, then ore pulp is injected autoclave;
C, in reactor pressurization inject air, make still internal pressure reach 0.3MPa, and be preheated to 90 DEG C;
D, the vitriol oil of fine ore weight 1.1 times is added in acid adding tank, inject the vitriol oil when 0.8MPa to reactor, and make reacting kettle inner pressure remain to 0.8MPa;
E, maintenance temperature in the kettle 130 DEG C, soaking time 6h;
F, filter when temperature in the kettle is reduced to 90 DEG C, obtain containing scandium leach liquor and leached mud, now leaching yield is 91.72%.
The detected result table of the table 1 scandium rate of recovery
| Embodiment | Embodiment 1 | Embodiment 2 |
| Scandium content in leached mud | 17g/t | 11.3g/t |
| Leaching yield | 88.19% | 91.72% |
| Scandium content in leach liquor | 22.4mg/L | 24.71mg/L |
These are only the preferred embodiments of the present invention, the restriction not to this invention embodiment.For those skilled in the art, the present invention can have various modifications and changes also should within the protection domain of claim of the present invention, for the additive method adopting same or analogous step to obtain also all in the category of the present invention's protection.
Claims (5)
1. adopt a method for preheating-stepped pressure Leaching of Scandium from rich scandium material, it is characterized in that, comprise the following steps:
1) rich scandium material is less than 100 orders through being milled to granularity;
2) fine ore is sized mixing, and pulp density is adjusted to 40 ~ 46%;
3) ore pulp is injected autoclave, and the 0.2 ~ 0.3MPa that pressurizes, be warming up to 90 DEG C;
4) adopt the mode of pressurization, under the pressure of 0.7 ~ 0.8MPa, inject the vitriol oil instantaneously;
5) utilize the vitriol oil to meet the principle of water heat release, in autoclave, temperature rises to more than 150 DEG C instantaneously, keeps temperature 120 ~ 150 DEG C, soaking time 3 ~ 6h in autoclave;
6) ore pulp after leaching after filtration, obtains leach liquor and leached mud, and leach liquor is for containing scandium solution.
2. a kind of method adopting preheating-stepped pressure Leaching of Scandium from rich scandium material according to claim 1, is characterized in that, step 1) described in rich scandium material be Sc
2o
3content reaches the rich scandium material of 80 ~ 200g/t.
3. a kind of method adopting preheating-stepped pressure Leaching of Scandium from rich scandium material according to claim 1, is characterized in that, step 3) and 4) described in pressuring method be air compressor inject air pressurized.
4. a kind of method adopting preheating-stepped pressure Leaching of Scandium from rich scandium material according to claim 1, is characterized in that, step 4) described in vitriol oil concentration be 98%, the 1.1:1 that the described vitriol oil and described fine ore weight ratio are.
5. a kind of method adopting preheating-stepped pressure Leaching of Scandium from rich scandium material according to claim 1, is characterized in that, step 6) described in filter refer to that in autoclave, temperature is cooled to filter when 90 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510151092.8A CN104726703B (en) | 2015-04-01 | 2015-04-01 | A kind of method using preheating stepped pressure Leaching of Scandium from rich scandium material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510151092.8A CN104726703B (en) | 2015-04-01 | 2015-04-01 | A kind of method using preheating stepped pressure Leaching of Scandium from rich scandium material |
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| CN104726703A true CN104726703A (en) | 2015-06-24 |
| CN104726703B CN104726703B (en) | 2017-11-21 |
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| CN201510151092.8A Expired - Fee Related CN104726703B (en) | 2015-04-01 | 2015-04-01 | A kind of method using preheating stepped pressure Leaching of Scandium from rich scandium material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868325A (en) * | 2017-01-22 | 2017-06-20 | 北京有色金属研究总院 | A kind of method of scandium-enriched in hydrochloric acid leaching ilmenite production rich-titanium material flow |
| CN110129590A (en) * | 2019-05-29 | 2019-08-16 | 中南大学 | A method of extracting scandium from the concentrate of hornblend containing scandium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312090A (en) * | 2011-09-10 | 2012-01-11 | 吉林吉恩镍业股份有限公司 | Process for extracting scandium from ore containing scandium through pressure leaching |
| CN102925721A (en) * | 2012-10-30 | 2013-02-13 | 吉林吉恩镍业股份有限公司 | Enrichment method for improving scandium grade |
-
2015
- 2015-04-01 CN CN201510151092.8A patent/CN104726703B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312090A (en) * | 2011-09-10 | 2012-01-11 | 吉林吉恩镍业股份有限公司 | Process for extracting scandium from ore containing scandium through pressure leaching |
| CN102925721A (en) * | 2012-10-30 | 2013-02-13 | 吉林吉恩镍业股份有限公司 | Enrichment method for improving scandium grade |
Non-Patent Citations (1)
| Title |
|---|
| 宋兴诚: "《重有色金属冶金》", 30 April 2011 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868325A (en) * | 2017-01-22 | 2017-06-20 | 北京有色金属研究总院 | A kind of method of scandium-enriched in hydrochloric acid leaching ilmenite production rich-titanium material flow |
| CN106868325B (en) * | 2017-01-22 | 2019-06-18 | 北京有色金属研究总院 | A kind of method that hydrochloric acid leaching ilmenite produces scandium-enriched in rich-titanium material process |
| CN110129590A (en) * | 2019-05-29 | 2019-08-16 | 中南大学 | A method of extracting scandium from the concentrate of hornblend containing scandium |
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| CN104726703B (en) | 2017-11-21 |
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