CN102935404A - Method for performing dry classification enrichment on V2O5 from vanadium-containing mineral - Google Patents
Method for performing dry classification enrichment on V2O5 from vanadium-containing mineral Download PDFInfo
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- CN102935404A CN102935404A CN2012104939289A CN201210493928A CN102935404A CN 102935404 A CN102935404 A CN 102935404A CN 2012104939289 A CN2012104939289 A CN 2012104939289A CN 201210493928 A CN201210493928 A CN 201210493928A CN 102935404 A CN102935404 A CN 102935404A
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Abstract
The invention discloses a method for performing dry classification enrichment on V2O5 from vanadium-containing mineral. The method comprises the following steps of: roughly crushing the vanadium-containing mineral, and screening and removing coarse particle minerals, so that the vanadium grade is preliminarily enriched; performing fine grinding on the mineral particles, performing dry airflow classification on the finely ground fine powder, removing partial gangue with low vanadium content, and collecting fine particle grade materials which are subjected to airflow classification, thus obtaining vanadium-containing concentrate with enriched V2O5. According to the method, due to two-step tailings removal enrichment, the subsequent mineral treatment capacity is reduced, and the vanadium grade is improved; and moreover, the method is simple in process flow, convenient to operate, green and environment-friendly and has wide application prospects.
Description
Technical field
The invention belongs to ore dressing and the metallurgical technology field of rare metal in the field of metallurgy, relate in particular to a kind of from contain vanadium mineral enrichment V
2O
5Method.
Background technology
Vanadium is a kind of rare refractory metal, is a kind of very important strategic resource.At present, the vanadium more than 85% is used to steel and iron industry in the world; About 7% is used to produce other alloy, such as aluminum-vanadium alloy, titanium vanadium alloy; Other has 7% to be used to chemical industry and ceramic industry, and Chang Zuowei produces the raw material of effective catalyst, catalyzer contact agent.The application of vanadium also constantly expanding, has new application at aspects such as aerospace industry, nuclear industry, bio-pharmaceuticals and vanadium cells.
Rock coal containing alum is a kind of distinctive navajoite resource of China, and its reserves are huge, but the grade of stone coal vanadium-containing height do not wait, the stone coal vanadium-containing grade major part of China each department between 0.1%～1.0%, grade greater than 1% then less.The grade of vanadium is lower in China's bone coal, and non-patent literature " extracting vanadium from stone coal progress and V
2O
5Market situation " record in (guest's intelligence is brave, " Hunan non-ferrous metal " 01 phase in 2006, P16～20): bone coal navajoite adopts the method for traditional ore dressing can not give enrichment, and China's extracting vanadium from stone coal industry also has no the beneficiation enrichment precedent.But also have a small amount of document to propose the method for bone coal ore dressing recently, title is milled to 200 orders with mineral in the Chinese patent literature " a kind of beneficiation method of Rock coal containing alum " (publication number CN1864860A), makes ore pulp, selects with the fine graded machine of wet type to contain the vanadium concentrate; The method vanadium recovery is lower, and generally adopts roasting technique to process on the silicalite coal industry field, and the gained concentrate also need increase by one section baking operation, has obviously improved investment and produced to rise this.Non-patent literature " vanadium in the stone coal mine of beneficiation enrichment Aksu " is (to equality, " investigation of materials and application " 01 phase in 2010, P65 ~ 69) record in: adopt wet type screening throwing tail or wet type to screen again method for floating Vanadium Concentrationin, the method also is wet processed, the flotation operation need be founded the factory specially, drop into hugely, be difficult to equally be applicable to the silicalite colliery.
The extracting vanadium from stone coal industry all faces the immense pressure that reduces production costs.Extracting vanadium from stone coal project cost height mainly is because to contain the grade of vanadium mineral too low, causes that investment is large, the environmental protection cost is high, treating capacity and energy resource consumption be large.Be difficult at production cost in the situation of effectively control, the beneficiation enrichment technology of seeking in conjunction with process for extracting vanadium and environmental protection becomes new developing direction.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of small investment, energy consumption low, pollute less, simple to operate and be suitable for the dry classification enrichment V from contain vanadium mineral of industrial applications
2O
5Method.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes be a kind of from contain vanadium mineral dry classification enrichment V
2O
5Method, may further comprise the steps:
(1) thick broken: at first slightly break containing vanadium mineral, part coarse granule mineral are removed in screening, make the vanadium grade in the mineral obtain preliminary enrichment; The described equipment of slightly breaking once the Cheng Youxuan employing is jaw crusher and gyratory crusher, and carries out fragmentation by jaw crusher first, carries out fragmentation by gyratory crusher again;
(2) fine grinding: the mineral grain after above-mentioned steps (1) processing is carried out fine grinding; The equipment that described fine grinding process preferably adopts is rod mill or ball mill;
(3) air current classifying: the powder material after above-mentioned steps (2) processing is carried out the dry method air current classifying, further separate powder material by the control air-flow velocity, and collect the fine particle stage material behind the air current classifying, obtain enrichment V
2O
5After contain the vanadium product.
Above-mentioned dry classification enrichment V from contain vanadium mineral
2O
5Method, the described vanadium mineral that contains is siliceous lithotype navajoite stone, wherein contains the C mass fraction and is preferably 1%～25%, contains V
2O
5Grade is preferably greater than 0.5%.We studies show that, part is siliceous, and to contain the each component mineral physics performance of vanadium shale variant, and gangue phase hardness is large, and density is large, contains V
2O
5Low; Silicon phase hardness is little, and density is little, contains V
2O
5As seen height, when processing this type of and containing vanadium mineral, is specially adapted to enrichment method of the present invention.
Above-mentioned dry classification enrichment V from contain vanadium mineral
2O
5Method, in the described step (1), described coarse granule mineral refer to that preferably granularity is greater than the mineral of 5mm; After described slightly broken the finishing, the mineral quantity of mineral grain granularity-5mm＞80% after preferred control is slightly broken.
Above-mentioned dry classification enrichment V from contain vanadium mineral
2O
5Method, in the described step (1), preferably adopt rotary screen to sieve, the quality optimization of the coarse granule mineral that screening is removed accounts for described 10%～30% of vanadium mineral (the being raw ore) quality that contains.
Above-mentioned dry classification enrichment V from contain vanadium mineral
2O
5Method, after described fine grinding is finished, preferably control the inventory of powder material granularity-0.15mm after the fine grinding＞85%, described fine particle stage material refers to that granularity is less than the mineral aggregate of 0.15mm.
Above-mentioned dry classification enrichment V from contain vanadium mineral
2O
5Method, in the described step (3), the throwing tail amount of air current classifying process preferably accounts for 5%～15% of powder material quality before the classification.
Compared with prior art, the invention has the advantages that:
(1) method of two steps throwing tail is carried out in the present invention's employing when mineral slightly break with fine grinding, has improved the vanadium grade, substantially increases on original technique basis and invests;
(2) this method whole process using dry classification can be accepted follow-up calcination process smoothly; Not only technological process is simple, and is energy-saving and cost-reducing, and process operation is convenient, environmental protection.
Description of drawings
Fig. 1 is the process chart of the embodiment of the invention.
The specific embodiment
The invention will be further described with concrete preferred embodiment below in conjunction with Figure of description, but protection domain not thereby limiting the invention.
Embodiment 1:
The Certain District, Hunan bone coal navajoite, the raw ore chemical composition mainly comprises C 15.00%, SiO
258.46%, Al
2O
38.72%, V
2O
51.00%, adopt method of the present invention that this siliceous lithotype bone coal navajoite is processed, specifically may further comprise the steps (technological process is referring to Fig. 1):
1. thick broken: as to adopt successively jaw crusher and gyratory crusher slightly to break the bone coal navajoite of present embodiment, control the discharging-material size scope about 5.00mm by spindle breaker discharge port, mineral after will slightly breaking again adopt the 5.00mm rotary screen to sieve, the coarse granule mineral quality is 17.40% of ore quality on the sieve, and sample analysis contains V
2O
5Be 0.23%; Sieve is lower to be ore quality 82.60%, and sample analysis contains V
2O
5Be 1.16%.Ore handling capacity reduces by 17.40%, vanadium loss 4.00%, and the vanadium grade improves 16.00%.
2. fine grinding: the mineral grain that is lower than 5.00mm that step 1 is made enters the ball mill fine grinding, gets the mesh screen that powder material sample after the fine grinding is crossed 0.15mm, and recording the mineral quantity of sieving is 93.40%, stops fine grinding this moment.
3. dry method air current classifying: the powder material after step (2) fine grinding is sent into gas flow sizing machine, and by regulating wind-force size control classification amount, meal outlet collecting amount is 9.70% of charging total amount, and sample analysis contains V
2O
5Be 0.42%, the fine particle stage material collecting amount of fine powder outlet (less than 0.15mm) is 90.30% of charging total amount, and sample analysis contains V
2O
5Be 1.24%.
Throw tail by thick broken going on foot with fine grinding two, ore handling capacity reduces 25.20% altogether, and the vanadium total losses is 7.37%, and the vanadium grade improves 24.00%, contains vanadium 1.00% from raw ore and is increased to 1.24%.
Embodiment 2:
Somewhere, northwest bone coal navajoite, the raw ore chemical composition mainly comprises C 2.25%, SiO
259.41%, Al
2O
310.40%, V
2O
50.72%, adopt method of the present invention that this siliceous lithotype bone coal navajoite is processed, specifically may further comprise the steps:
1. thick broken: as to adopt successively jaw crusher and gyratory crusher slightly to break the bone coal navajoite of present embodiment, control the discharging-material size scope about 5.00mm by spindle breaker discharge port, mineral after will slightly breaking again adopt the 5.00mm rotary screen to sieve, the coarse granule mineral quality is 15.70% of ore quality on the sieve, and sample analysis contains V
2O
5Be 0.27%; Sieve is lower to be ore quality 84.30%, and sample analysis contains V
2O
5Be 0.81%.Ore handling capacity reduces by 11.70%, vanadium loss 4.24%, and the vanadium grade improves 11.70%.
2. fine grinding: the mineral grain that is lower than 5.00mm that step 1 is made enters the rod mill fine grinding, gets the mesh screen that powder material sample after the fine grinding is crossed 0.15mm, and recording the mineral quantity of sieving is 94.50%, stops fine grinding this moment.
3. dry method air current classifying: the fine granular materials after step (2) fine grinding is sent into gas flow sizing machine, and by regulating wind-force size control classification amount, meal outlet collecting amount is 9.20% of charging total amount, and sample analysis contains V
2O
5Be 0.29%, the fine particle stage material collecting amount of fine powder outlet (less than 0.15mm) is 90.80% of charging total amount, and sample analysis contains V
2O
5Be 0.86%.
Throw tail by thick broken going on foot with fine grinding two, ore handling capacity reduces 23.46% altogether, and the vanadium total losses is 9.00%, and the vanadium grade improves 18.90%, contains vanadium 0.72% from raw ore and is increased to 0.86%.
Claims (8)
1. dry classification enrichment V from contain vanadium mineral
2O
5Method, may further comprise the steps:
(1) thick broken: at first slightly break containing vanadium mineral, the coarse granule mineral are removed in screening;
(2) fine grinding: the mineral grain after above-mentioned steps (1) processing is carried out fine grinding;
(3) air current classifying: the powder material after above-mentioned steps (2) processing is carried out the dry method air current classifying, further separate powder material by the control air-flow velocity, and collect the fine particle stage material behind the air current classifying, obtain enrichment V
2O
5After contain the vanadium concentrate.
According to claim 1 from contain vanadium mineral dry classification enrichment V
2O
5Method, it is characterized in that: the described vanadium mineral that contains is siliceous lithotype navajoite stone, and wherein containing the C mass fraction is 1%～25%, contains V
2O
5Grade＞0.5%.
According to claim 1 and 2 from contain vanadium mineral dry classification enrichment V
2O
5Method, it is characterized in that: in the described step (1), described coarse granule mineral refer to that granularity is greater than the mineral of 5mm; After described thick broken the finishing, the mineral quantity of mineral grain granularity-5mm＞80% after control is slightly broken.
According to claim 1 and 2 from contain vanadium mineral dry classification enrichment V
2O
5Method, it is characterized in that: in the described step (1), adopt rotary screen to sieve, the quality of the coarse granule mineral that screening is removed accounts for described 10%～20% of the vanadium mineral quality that contains.
According to claim 1 and 2 from contain vanadium mineral dry classification enrichment V
2O
5Method, it is characterized in that: after described fine grinding is finished, the inventory＞85% of the granularity-0.15mm of powder material after the control fine grinding; Described fine particle stage material refers to that granularity is less than the mineral aggregate of 0.15mm.
According to claim 1 and 2 from contain vanadium mineral dry classification enrichment V
2O
5Method, it is characterized in that: in the described step (3), the throwing tail amount of air current classifying process accounts for 5%～15% of powder material quality before the classification.
According to claim 1 and 2 from contain vanadium mineral dry classification enrichment V
2O
5Method, it is characterized in that: the described equipment of slightly breaking once Cheng Xuanyong is jaw crusher and gyratory crusher.
According to claim 1 and 2 from contain vanadium mineral dry classification enrichment V
2O
5Method, it is characterized in that: the equipment that described fine grinding process is selected is rod mill or ball mill.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226454A (en) * | 2013-06-07 | 2014-12-24 | 韩国地质资源研究院 | Layered clay mineral high-grade screening method based on wet grinding and classification |
| CN107469999A (en) * | 2017-09-19 | 2017-12-15 | 佛山科学技术学院 | The grinding process and equipment of a kind of ceramic raw material |
| CN107913784A (en) * | 2016-10-11 | 2018-04-17 | 李冰 | A kind of production method that superfines is developed into natural crystal or laterite |
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| RU2297283C1 (en) * | 2005-09-27 | 2007-04-20 | Научно-производственное республиканское унитарное предприятие "НПО "Центр" | Materials grinding apparatus |
| CN101121538A (en) * | 2007-07-12 | 2008-02-13 | 中国铝业股份有限公司 | Desiliconizing method for bauxite by dry method |
| CN103357480A (en) * | 2013-07-04 | 2013-10-23 | 宝兴易达光伏刃料有限公司 | Silicon carbide cutting blade material and preparation method thereof |
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| CN2191034Y (en) * | 1993-06-21 | 1995-03-08 | 李选民 | High-speed machine for crushing, grinding and winnow |
| CN1182644A (en) * | 1996-11-17 | 1998-05-27 | 郑康平 | Pneumatic separator for extracting heading breeze from metal ore |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226454A (en) * | 2013-06-07 | 2014-12-24 | 韩国地质资源研究院 | Layered clay mineral high-grade screening method based on wet grinding and classification |
| CN104226454B (en) * | 2013-06-07 | 2016-10-05 | 韩国地质资源研究院 | The high-grade screening technique of book clay mineral based on case of wet attrition and classification |
| CN107913784A (en) * | 2016-10-11 | 2018-04-17 | 李冰 | A kind of production method that superfines is developed into natural crystal or laterite |
| CN107469999A (en) * | 2017-09-19 | 2017-12-15 | 佛山科学技术学院 | The grinding process and equipment of a kind of ceramic raw material |
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| CN102935404B (en) | 2015-05-20 |
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