CN108580021A - The process of fine chrome mine is recycled in a kind of gravity tailings of the dry slag of high-carbon chrome iron for smelting - Google Patents
The process of fine chrome mine is recycled in a kind of gravity tailings of the dry slag of high-carbon chrome iron for smelting Download PDFInfo
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- CN108580021A CN108580021A CN201810071490.2A CN201810071490A CN108580021A CN 108580021 A CN108580021 A CN 108580021A CN 201810071490 A CN201810071490 A CN 201810071490A CN 108580021 A CN108580021 A CN 108580021A
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- smelting
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- dry slag
- gravity tailings
- iron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
Abstract
The invention discloses in a kind of gravity tailings of the dry slag of high-carbon chrome iron for smelting recycle fine chrome mine process, include the gravity tailings of the dry slag of high-carbon chrome iron for smelting is crushed, prescreening, stage grinding, gravity treatment, obtain fine chrome mine；Wherein, the size of prescreening is 1mm.The process that fine chrome mine is recycled in the gravity tailings of the dry slag of high-carbon chrome iron for smelting of the present invention reduces the discharge of ferrochrome slag and banks up, vitalized a large amount of chromium resource, improves utilization rate and realizes high production, increases Business Economic Benefit and social benefit；The iron concentrate of high quality is obtained, it is cost-effective, improve income.
Description
Technical field
The present invention relates to returned in the gravity tailings of mineral engineering field more particularly to a kind of dry slag of high-carbon chrome iron for smelting
Receive the process of fine chrome mine.
Background technology
In recent years, high carbon ferro-chrome industry development in China's is rapid, and alreading exceed South Africa becomes maximum ferrochrome in the world
Producing country, according to the online statistics of Chinese ferroalloy, China's ferrochrome yield reaches 3,880,000 t within 2014.Ferrochrome slag is that ferrochrome closes
The melting waste slag containing chromium generated in golden production process belongs to general industry solid waste.Often production 1t ferrochromes just have 1.1~1.2t
Waste residue output.Thus it estimates, China about generates the ferrochrome slag of 4,000,000 t every year, and utilization rate is only 30%, and there are about 2,800,000 t chromium
The outdoor stockpiling of scum, is not properly disposed and is utilized, and also results in very big harm to environment, therefore be worth again to ferrochrome slag
There are demands for exploitation.
Currently, existing ferrochrome Slag treatment mode is mainly single gravity concentration flow or single magnetic dressing process.But absolutely mostly
Number is carries out after simply sorting chromium slag, the Cr of tailing2O3Content is relatively low, meets brickmaking requirement of directly paving the way, and can directly make
With.But for Cr after some chromium slag chromium slag gravity treatments2O3The still relatively high tailing of content carries out the considerably less of beneficiation research, absolutely mostly
Number extracts chromium resource by wet-method for leaching.In papers such as Qiu Weijian《The research of metal is recycled from carbon chromium scum》In carry
Use concentration to Shanghai Ferroally Plant handles chromium slag gravity tailings, there is the metallic particles etc. that cannot be recycled less than 3mm and lacks
It falls into, is not suitable for carrying out fine chrome mine recycling in the gravity tailings of the dry slag of high-carbon chrome iron for smelting.
Therefore, those skilled in the art, which is dedicated to developing in a kind of gravity tailings of the dry slag of high-carbon chrome iron for smelting, recycles chromium
The process of concentrate, the high-carbon chrome iron for smelting for solving the unsuitable fine grained low chromium content of above-mentioned existing ferrochrome Slag treatment mode are dry
The recycling of fine chrome mine in the gravity tailings of slag.
Invention content
In view of the drawbacks described above of the prior art, the technical problem to be solved by the present invention is to ferrochrome Slag treatments in the prior art
The recycling of fine chrome mine in the gravity tailings of the dry slag of high-carbon chrome iron for smelting of the unsuitable fine grained low chromium content of mode.
To achieve the above object, the present invention provides recycle fine chrome mine in a kind of gravity tailings of the dry slag of high-carbon chrome iron for smelting
Process, include the gravity tailings of the dry slag of high-carbon chrome iron for smelting is crushed, prescreening, stage grinding, gravity treatment, obtain
To fine chrome mine；Wherein, the size of prescreening is 1mm.
Further, the process of fine chrome mine is recycled in the gravity tailings of the dry slag of the high-carbon chrome iron for smelting, it is specific to wrap
Include following steps：
The gravity tailings of the dry slag of step 1, high-carbon chrome iron for smelting is broken；
The gravity tailings for the dry slag of high-carbon chrome iron for smelting being crushed in step 1 is carried out prescreening by step 2, is crushed
Sample ore and -1mm+180 μm grade sample ores of the size more than 1mm；
The step 3 ,+1mm that step 2 is obtained and -1mm+180 μm of grade sample ores carry out ore grinding, equal ore grinding to grain respectively
Diameter is -180 μm and obtains ore milling product；
Step 4, the ore milling product for obtaining step 3 carry out gravity treatment, obtain fine chrome mine and gravity treatment chats and gravity tailings；
Wherein, gravity treatment chats, recyclable cycle are used for recovery process；Ferrochrome grain size is micro- in 20-50 μm in gravity tailings
Particulate can not be recycled by shaking table, be gravity tailings.
In the better embodiment of the present invention, in the step 4, in obtained fine chrome mine, Cr2O3Grade 30.18%,
The rate of recovery is 22.52%.
Using above scheme, the technique of recycling fine chrome mine in the gravity tailings of the dry slag of high-carbon chrome iron for smelting disclosed by the invention
Method has the following technical effects：
(1) present invention process method is using rationally easy ore-dressing technique, effectively from the weight of the dry slag of high-carbon chrome iron for smelting
It selects and has carried out the recycling of fine chrome mine in tailing, reduce the discharge of ferrochrome slag and bank up area, reduce and take up an area, vitalized a large amount of
Chromium resource improves utilization rate and realizes high production, increases Business Economic Benefit and social benefit；
(2) process that fine chrome mine is recycled in the gravity tailings of the dry slag of high-carbon chrome iron for smelting of the present invention, optimizes dresser
The grade of skill, obtained fine chrome mine is more than 30%, and the whole process rate of recovery is more than 20%, is effectively utilized resource, improves utilization
Rate is conducive to the sustainable development of society.
In conclusion recycling the process of fine chrome mine in the gravity tailings of the dry slag of high-carbon chrome iron for smelting of the present invention, reduce
It the discharge of ferrochrome slag and banks up, has vitalized a large amount of chromium resource, improve utilization rate and realize high production, increase business economic
Benefit and social benefit；The iron concentrate of high quality is obtained, it is cost-effective, improve income.
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to attached drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Description of the drawings
Fig. 1 is the process flow chart of the embodiment of the present invention；
Specific implementation mode
Multiple preferred embodiments that the present invention is introduced below with reference to Figure of description, keep its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits
The embodiment that Yu Wenzhong is mentioned.
The process of fine chrome mine is recycled in the gravity tailings of the dry slag of embodiment, high-carbon chrome iron for smelting
The gravity tailings of the dry slag of step 1, high-carbon chrome iron for smelting is broken, is crushed to that -2mm mixings are for use, and after testing, mixing is broken
In muck sample, Cr2O3Grade is 8.94%；
The gravity tailings for the dry slag of high-carbon chrome iron for smelting being crushed in step 1 is carried out prescreening by step 2, is crushed
Sample ore and -1mm+180 μm grade sample ores of the size more than 1mm；
The step 3 ,+1mm that step 2 is obtained and -1mm+180 μm of grade sample ores carry out ore grinding, equal ore grinding to grain respectively
Diameter is -180 μm and obtains ore milling product；
Step 4, the ore milling product for obtaining step 3 carry out table concentration, obtain fine chrome mine and gravity treatment chats and gravity treatment tail
Mine；The results are shown in Table 1：
1 dry slag prescreening-stage grinding-gravity treatment test result of table
The result shows that finally can get Cr2O3Grade 30.18%, 22.52% gravity concentrate of the rate of recovery, can return to height
Carbon ferrochrome production line does raw material；Cr2O3Grade 7.62%, the gravity treatment chats of the rate of recovery 66.34%, recyclable cycle is for recycling
Flow；Cr2O3Grade 5.97%, the rate of recovery 11.14%, the gravity tailings of TFe grades 3.40% are micro- at 20-50 μm for grain size
Particulate, shaking table can not still recycle.
It, can be from the dry slag of high-carbon chrome iron for smelting by described above as it can be seen that using prescreening-stage grinding-gravity separation technology
In gravity tailings, Cr is obtained2O3The fine chrome mine of grade 30.18%.Obtained fine chrome mine rate containing chromium and the rate of recovery is high, effectively recycles
Chromium in the gravity tailings of the dry slag of high-carbon chrome iron for smelting, increases economic well-being of workers and staff.
Other technologies scheme of the present invention also has similar using effect.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be in the protection domain being defined in the patent claims.
Claims (2)
1. recycling the process of fine chrome mine in a kind of gravity tailings of the dry slag of high-carbon chrome iron for smelting, which is characterized in that including inciting somebody to action
The gravity tailings of the dry slag of high-carbon chrome iron for smelting is crushed, prescreening, stage grinding, gravity treatment, obtain fine chrome mine；Wherein, in advance
The size first sieved is 1mm.
2. process as described in claim 1, which is characterized in that specifically include following steps：
The gravity tailings of the dry slag of step 1, high-carbon chrome iron for smelting is broken；
The gravity tailings for the dry slag of high-carbon chrome iron for smelting being crushed in step 1 is carried out prescreening by step 2, obtains broken size
Sample ore more than 1mm and -1mm+180 μm of grade sample ores；
The step 3 ,+1mm that step 2 is obtained and -1mm+180 μm of grade sample ores carry out ore grinding respectively, and equal ore grinding to grain size is -
180 μm obtain ore milling product；
Step 4, the ore milling product for obtaining step 3 carry out gravity treatment, obtain fine chrome mine and gravity treatment chats and gravity tailings；
Wherein, gravity treatment chats, recyclable cycle are used for recovery process；Ferrochrome grain size is in 20-50 μm in gravity tailings, microfine
It can not be recycled by shaking table, be gravity tailings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810071490.2A CN108580021B (en) | 2018-01-25 | 2018-01-25 | Process method for recovering chromium concentrate from gravity tailings of high-carbon ferrochromium smelting dry slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810071490.2A CN108580021B (en) | 2018-01-25 | 2018-01-25 | Process method for recovering chromium concentrate from gravity tailings of high-carbon ferrochromium smelting dry slag |
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| Publication Number | Publication Date |
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| CN108580021A true CN108580021A (en) | 2018-09-28 |
| CN108580021B CN108580021B (en) | 2020-06-02 |
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| CN201810071490.2A Active CN108580021B (en) | 2018-01-25 | 2018-01-25 | Process method for recovering chromium concentrate from gravity tailings of high-carbon ferrochromium smelting dry slag |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3323900A (en) * | 1964-08-13 | 1967-06-06 | Fuji Iron & Steel Co Ltd | Process for treatment of iron oxide ores containing nickel, chromium and cobalt |
| CN1064317A (en) * | 1991-02-12 | 1992-09-09 | 夏在舟 | Administer the absorption method of dissociating of chromium slag |
| CN1110196A (en) * | 1994-04-06 | 1995-10-18 | 曾庆琳 | Treatment technology of leached residue for alkaline hydrolysis of chromium |
| CN103537366A (en) * | 2013-11-12 | 2014-01-29 | 攀枝花环业冶金渣开发有限责任公司 | Method for recycling high grade iron from blast furnace dry slag |
| CN103878111A (en) * | 2014-03-28 | 2014-06-25 | 中钢集团马鞍山矿山研究院有限公司 | Novel beneficiation technology of high-grade ferrochrome ore |
| JP2017052992A (en) * | 2015-09-08 | 2017-03-16 | 住友金属鉱山株式会社 | Ore slurry treatment method and wet smelting method for nickel oxide ore |
| CN106622640A (en) * | 2016-12-02 | 2017-05-10 | 陕西盛华冶化有限公司 | Treatment system for separating manganese-iron alloy slag iron and separating method |
-
2018
- 2018-01-25 CN CN201810071490.2A patent/CN108580021B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3323900A (en) * | 1964-08-13 | 1967-06-06 | Fuji Iron & Steel Co Ltd | Process for treatment of iron oxide ores containing nickel, chromium and cobalt |
| CN1064317A (en) * | 1991-02-12 | 1992-09-09 | 夏在舟 | Administer the absorption method of dissociating of chromium slag |
| CN1110196A (en) * | 1994-04-06 | 1995-10-18 | 曾庆琳 | Treatment technology of leached residue for alkaline hydrolysis of chromium |
| CN103537366A (en) * | 2013-11-12 | 2014-01-29 | 攀枝花环业冶金渣开发有限责任公司 | Method for recycling high grade iron from blast furnace dry slag |
| CN103878111A (en) * | 2014-03-28 | 2014-06-25 | 中钢集团马鞍山矿山研究院有限公司 | Novel beneficiation technology of high-grade ferrochrome ore |
| JP2017052992A (en) * | 2015-09-08 | 2017-03-16 | 住友金属鉱山株式会社 | Ore slurry treatment method and wet smelting method for nickel oxide ore |
| CN106622640A (en) * | 2016-12-02 | 2017-05-10 | 陕西盛华冶化有限公司 | Treatment system for separating manganese-iron alloy slag iron and separating method |
Non-Patent Citations (2)
| Title |
|---|
| 刘世明: "碳铬渣综合利用初探", 《铁合金》 * |
| 刘柏杨等: "铬铁渣资源化利用技术研究现状及发展趋势", 《环境工程》 * |
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