CN205761623U - A kind of vertical mill grinding system for iron mine fine grinding classification - Google Patents
A kind of vertical mill grinding system for iron mine fine grinding classification Download PDFInfo
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- CN205761623U CN205761623U CN201620456790.9U CN201620456790U CN205761623U CN 205761623 U CN205761623 U CN 205761623U CN 201620456790 U CN201620456790 U CN 201620456790U CN 205761623 U CN205761623 U CN 205761623U
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Abstract
The utility model discloses a kind of vertical mill grinding system for iron mine fine grinding classification, connect including vertical mill, the charging aperture of vertical mill and the first cyclone, the overfall of vertical mill and a magnetic separator are connected.The bottom concentrate outlet of magnetic separator is connected with the second cyclone.This utility model can be effectively reduced the circulating load of grind grading, circulating load can be reduced to less than 200%, its fineness after demagnetizer is 325 mesh more than 65%, and the second cyclone overflow fineness 325 mesh reaches more than 95%, its sand setting is 325 mesh less than 45%, and can improve treating capacity.
Description
Technical field
This utility model relates to mineral manufacture field, particularly relates to a kind of vertical mill grinding system for iron mine fine grinding classification.
Background technology
In the ore dressing field of iron mine, along with the exploitation of advantage iron ore deposit, current iron ore deposit progressively tend to lean, thin,
Miscellaneous, many Iron Works Plants need to be finely ground to the even above monomer dissociation that can be only achieved mineral of-400 mesh 95%.And at general iron mine
In fine grinding grading technology flow process, because iron mine is than great, fine size, there is again the problem that derichment is big with circulating load.General
Iron mine grading technology is as shown in Figure 1:
Fig. 1 (a), (b) belong to the most conventional hierarchy system, but in classification process, due to stone-like pulse (usually quartz with
Mica group) differ relatively big with the proportion between iron mine, the gangue mineral proportion that granule is bigger is still light than iron mine, therefore cyclone
Be difficult to high efficiency carry out classification, cause monomer dissociation and heavy iron mine still be returned in the middle of vertical mill 1 carry out weight
Regrinding ore deposit, and then cause the circulating load that grinding system is overweight, generally up to 600%～900%, affect its treating capacity.Fig. 1 (c)
In, there is the effect strengthening grading effect, because of the first cyclone 2 sand setting amount greatly, the ratio that fine grained accounts for tails off, and therefore affects the
The classification efficiency of two cyclones 3, circulating load has reduction relative to load in Fig. 1 (a), but still has 400-500%.Fig. 1 (d)
In these hierarchy systems, effect is relatively preferable, but at the first cyclone 2 sand setting after vertical mill 1 ore grinding, the most non-monomer
The iron mine dissociated is dissociated, and therefore the grading effect of the second cyclone 3 is similar to the first cyclone 2 in (d), thick and light
Stone-like pulse relatively iron mine light specific gravity, it is low that gangue content still results in classification efficiency, and circulating load also reaches more than 350%, affects ore grinding effect
Rate and mill output.
Utility model content
This utility model purpose is to provide a kind of vertical mill grinding system for iron mine fine grinding classification, thin to solve existing iron mine
The technical problem of the high circulating load in mill hierarchy system.
For achieving the above object, this utility model provides a kind of vertical mill grinding system for iron mine fine grinding classification, including standing
Grinding machine, the charging aperture of vertical mill and the first cyclone connect, and the overfall of vertical mill and a magnetic separator are connected, the concentrate of magnetic separator
Outlet is connected with the second cyclone.
As further improvements in methods of the present utility model:
It is also associated with demagnetizer between concentrate outlet and second cyclone of magnetic separator.
The spigot of the second cyclone is connected with the charging aperture of vertical mill.
The bottom mine tailing outlet of magnetic separator is connected with the feed port of the first cyclone or carries out other operations.
The overfall of the first cyclone and the second cyclone merges output.
First cyclone and the second cyclone are hydrocyclone.
This utility model has the advantages that
1, the vertical mill grinding system for iron mine fine grinding classification of the present utility model, the circulation that can be effectively reduced grind grading is born
Lotus, can be reduced to less than 200% by circulating load, and its fineness after demagnetizer is-325 mesh more than 65%.
2, in a preferred approach, this utility model the second cyclone overflow fineness-325 mesh reaches more than 95%, and its sand setting is-325
Mesh less than 45%, and treating capacity can be improved.
In addition to objects, features and advantages described above, this utility model also has other objects, features and advantages.
Below with reference to accompanying drawings, this utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing and being further appreciated by of the present utility model, of the present utility model schematically
Embodiment and explanation thereof are used for explaining this utility model, are not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the iron mine fine grinding hierarchy system of background technology；
Fig. 2 is the structural representation of the vertical mill grinding system for iron mine fine grinding classification of this utility model preferred embodiment.
In figure, each label represents:
1, vertical mill；2, the first cyclone；3, the second cyclone；4, magnetic separator；5, demagnetizer.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but this utility model can be limited by claim
Multitude of different ways that is fixed and that cover is implemented.
Fig. 2 is the vertical mill grinding system structural representation for iron mine fine grinding classification alleged in the present embodiment.See Fig. 2,
Vertical mill grinding system for iron mine fine grinding classification of the present utility model, including vertical mill 1, the charging aperture of vertical mill 1 and
One cyclone 2 connects, and the overfall of vertical mill 1 is connected with magnetic separator 4.Concentrate outlet and second cyclone 3 of magnetic separator 4
It is connected.After vertical mill 1 overflow, increase magnetic separator 4, reduce gangue content in grinding machine overflow product, so can increase by the second rotation
The classification efficiency of stream device 3.
In the present embodiment, between bottom concentrate outlet and second cyclone 3 of magnetic separator 4, it is also associated with demagnetizer 5.Second rotation
The spigot of stream device 3 is connected with the charging aperture of vertical mill 1, it is simple to concentrate returns Vertical Mill processing step.The bottom tail of magnetic separator 4
Ore deposit outlet is connected with the feed port of the first cyclone 2, it is simple to magnetic separation stone-like pulse returns the overflow of the first cyclone 2 and goes to carry out sorting work
Skill, or select to throw tail also dependent on situation.The overfall of the first cyclone 2 and the second cyclone 3 merges output.This enforcement
In example, the first cyclone 2 and the second cyclone 3 all use hydrocyclone.
The operation principle of the present embodiment is: the iron mineral of the monomer dissociation of part that vertical mill 1 ore grinding is newly-generated, also increases simultaneously
The content of stone-like pulse, by the effect that sorts of magnetic separator 4, removes major part stone-like pulse in mineral, then by after classification magnetic separation
Concentrate part, reduces cyclone to the proportion of the scope of proportion, the most only iron mine in ore deposit, it is possible to distinguishes by granular size, enters
And allow the work of the second cyclone 3 more normalization, thus improve classification efficiency.
This utility model can be effectively reduced the circulating load of grind grading, circulating load can be reduced to less than 200%.It is through de-
After chinaware 5, fineness is-325 mesh more than 65%, and the second cyclone 3 overflow fineness-325 mesh reaches more than 95%, and its sand setting is-325
Mesh less than 45%.
This utility model carries out application experiment in Shanshan, Xinjiang Iron Works Plant, and (d) technique in original Fig. 1 makes into standing in Fig. 2
Grinding machine grinding system, after application, on-the-spot grind grading circulating load is reduced to about 150%, effectively from original 500%
Improve classification efficiency and grinding efficiency, it is respond well, and improves treating capacity.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this area
For technical staff, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, institute
Any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (6)
1. the vertical mill grinding system for iron mine fine grinding classification, it is characterised in that include vertical mill (1), described Vertical Mill
The charging aperture of machine (1) and the first cyclone (2) connect, and the overfall of described vertical mill (1) and a magnetic separator (4) are connected,
The bottom concentrate outlet of described magnetic separator (4) is connected with the second cyclone (3).
Vertical mill grinding system for iron mine fine grinding classification the most according to claim 1, it is characterised in that described magnetic separation
It is also associated with demagnetizer (5) between concentrate outlet and second cyclone (3) of machine (4).
Vertical mill grinding system for iron mine fine grinding classification the most according to claim 1, it is characterised in that described second
The spigot of cyclone (3) is connected with the charging aperture of described vertical mill (1).
Vertical mill grinding system for iron mine fine grinding classification the most according to claim 1, it is characterised in that described magnetic separation
The bottom mine tailing outlet of machine (4) is connected with the feed port of described first cyclone (2).
Vertical mill grinding system for iron mine fine grinding classification the most according to claim 1, it is characterised in that described first
The overfall of cyclone (2) and the second cyclone (3) merges output.
6. according to the vertical mill grinding system for iron mine fine grinding classification according to any one of claim 1-5, it is characterised in that
Described first cyclone (2) and the second cyclone (3) are hydrocyclone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620456790.9U CN205761623U (en) | 2016-05-18 | 2016-05-18 | A kind of vertical mill grinding system for iron mine fine grinding classification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620456790.9U CN205761623U (en) | 2016-05-18 | 2016-05-18 | A kind of vertical mill grinding system for iron mine fine grinding classification |
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| CN205761623U true CN205761623U (en) | 2016-12-07 |
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| CN201620456790.9U Active CN205761623U (en) | 2016-05-18 | 2016-05-18 | A kind of vertical mill grinding system for iron mine fine grinding classification |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296011A (en) * | 2018-02-11 | 2018-07-20 | 中冶北方（大连）工程技术有限公司 | A kind of technique improving one section of closed circuit grinding treating capacity of magnetic iron ore |
| CN114345540A (en) * | 2021-12-09 | 2022-04-15 | 玉溪大红山矿业有限公司 | Low-grade hematite rough concentrate recleaning process |
-
2016
- 2016-05-18 CN CN201620456790.9U patent/CN205761623U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296011A (en) * | 2018-02-11 | 2018-07-20 | 中冶北方（大连）工程技术有限公司 | A kind of technique improving one section of closed circuit grinding treating capacity of magnetic iron ore |
| CN114345540A (en) * | 2021-12-09 | 2022-04-15 | 玉溪大红山矿业有限公司 | Low-grade hematite rough concentrate recleaning process |
| CN114345540B (en) * | 2021-12-09 | 2024-05-10 | 玉溪大红山矿业有限公司 | Low-grade hematite rough concentrate recleaning process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200218 Address after: 410205 room 208, A1-A3, jinruilugu science and Technology Park, No. 28, Ludian Road, Changsha high tech Development Zone, Changsha City, Hunan Province Patentee after: Hunan Jinmo Technology Co., Ltd Address before: Yuelu District City, Hunan province 410000 Changsha Lushan Road No. 966 Patentee before: Changsha Research Institute of Mining and Metallurgy Co., Ltd. |
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| TR01 | Transfer of patent right |