CN206828603U - A kind of pelletizing system of metallized pellet - Google Patents
A kind of pelletizing system of metallized pellet Download PDFInfo
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- CN206828603U CN206828603U CN201720599277.XU CN201720599277U CN206828603U CN 206828603 U CN206828603 U CN 206828603U CN 201720599277 U CN201720599277 U CN 201720599277U CN 206828603 U CN206828603 U CN 206828603U
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Abstract
The utility model discloses a kind of pelletizing system of metallized pellet.The system includes mixing device, is exported provided with carbonaceous material entrance, additive entrance and compound；Size mixing device, provided with iron content tailings entrance and tailings slurry outlet；Agitating device, is exported provided with tailings mud entrance and pressurized mud, and tailings mud entrance is connected with the tailings slurry outlet of size mixing device；The pressurized mud outlet of agitating device is provided with pressure-applying unit；Palletizing device, exported provided with compound entrance, pressurized mud entrance and carbonaceous pelletizing, compound entrance is connected with the compound outlet of mixing device, and pressurized mud entrance is connected with the pressurized mud outlet of agitating device；Reduction apparatus, exported provided with carbonaceous pelletizing entrance and metallized pellet, carbonaceous pelletizing entrance is connected with the carbonaceous pelletizing outlet of palletizing device.The utility model carries out pelletizing by way of spraying into aqueous tailings pelletizing, and the addition for preparing carbonaceous pelletizing forming process reclaimed water can be greatly reduced.
Description
Technical field
The utility model belongs to metallurgical and energy technology field, and in particular to a kind of pelletizing system of metallized pellet.
Background technology
Coal base pelletizing Direct Reduction Technology is to be made to contain after iron-bearing material is well mixed by a certain percentage with carbon raw material
Carbon pellets, ferriferous oxide in carbon raw material is reduced by the interior form with carbon.The preparation method of wherein carbonaceous pelletizing mainly has
Two kinds of pelletizing and pressure ball.
Coloured or smelting iron and steel aqueous tailings is general to be stored up or recycles all after filtering, and direct-reduction handles these
, it is necessary to be dried to iron-bearing material during raw material, then mixed with other raw materials, add water to carry out pelletizing or pressure ball.In industry
Change is needed first to be filtered substantial amounts of water, dries during handling aqueous tailings, and substantial amounts of energy is expended in drying course
Source.Raw material after drying will will add water to be mixed with reducing agent, additive, it is also necessary to add substantial amounts of water.In whole flow process
In water in aqueous tailings first to remove and add again, during consume the substantial amounts of energy, water resource.
Utility model content
The utility model directly carries out the preparation of carbonaceous pelletizing, no using aqueous tailings sprinkling pelletizing using aqueous tailings
The pretreatment such as need to dry tailings again, be levigate, the uniform carbonaceous pelletizing of batch mixing can be obtained, be used directly for directly
Reduction.
The utility model provides a kind of pelletizing system of metallized pellet, including：
Mixing device, exported provided with carbonaceous material entrance, additive entrance and compound；
Size mixing device, provided with iron content tailings entrance and tailings slurry outlet；
Agitating device, exported provided with tailings mud entrance and pressurized mud, the tailings mud entrance and the dress of sizing mixing
The tailings slurry outlet put is connected；
The pressurized mud outlet of the agitating device is provided with pressure-applying unit；
Palletizing device, exported provided with compound entrance, pressurized mud entrance and carbonaceous pelletizing, the compound entrance and institute
The compound outlet for stating mixing device is connected, and the pressurized mud entrance is connected with the pressurized mud outlet of the agitating device；
Reduction apparatus, exported provided with carbonaceous pelletizing entrance and metallized pellet, the carbonaceous pelletizing entrance and the pelletizing
The carbonaceous pelletizing outlet of device is connected.
In some embodiments of the utility model, the mixing device also includes binding agent entrance.
The utility model carries out pelletizing by way of spraying into aqueous tailings pelletizing, can directly utilize aqueous tailings, no
The processing of step such as need again to filter aqueous tailings, dry, crush.
The utility model can be such that tailings is uniformly closed very much with carbon raw material by the way of sprinkling, mitigate batch mixing early stage and bear
Load, improve batch mixing efficiency.
The addition for preparing carbonaceous pelletizing forming process reclaimed water can be greatly reduced in the utility model.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the pelletizing system of metallized pellet in the utility model embodiment.
Embodiment
Below in conjunction with drawings and examples, specific embodiment of the present utility model is described in more details, with
Just the advantages of better understood when scheme of the present utility model and its various aspects.However, specific implementations described below
Mode and embodiment are for illustrative purposes only, rather than to limitation of the present utility model.
As shown in figure 1, the pelletizing system of metallized pellet provided by the utility model includes mixing device 1, size mixing device
2nd, agitating device 3, palletizing device 4 and reduction apparatus 5.
Mixing device 1 is used to mix carbonaceous material and additive, provided with carbonaceous material entrance, additive entrance and compound
Outlet.Binding agent entrance is additionally provided with mixing device 1 shown in Fig. 1, when mixed material is cementitious, bonding can not be added
Agent, now mixing device 1 can be without setting binding agent entrance.
Size mixing device 2 is used for the moisture for adjusting iron content tailings, provided with iron content tailings entrance and tailings slurry outlet.
Agitating device 3 is used to stir in tailings mud, and gives pressure slurry.Agitating device 3 enters provided with tailings mud
Mouth and pressurized mud outlet, tailings mud entrance are connected with the tailings slurry outlet of size mixing device 2；The pressurization mud of agitating device 3
Slurry outlet is provided with pressure-applying unit.
Palletizing device 4 is used to be molded, and is exported provided with compound entrance, pressurized mud entrance and carbonaceous pelletizing, and compound enters
Mouth is connected with the compound outlet of mixing device 1, and pressurized mud entrance is connected with the pressurized mud outlet of agitating device 3.
It is metallized pellet that reduction apparatus 5, which is used for Reduction of Pellet Containing Coal Char, provided with carbonaceous pelletizing entrance and metallized pellet
Outlet, carbonaceous pelletizing entrance are connected with the carbonaceous pelletizing outlet of palletizing device 4.
Metallized pellet is prepared using said system, its flow is as follows：
Carbonaceous material and additive are sent into mixing device 1, compound is obtained after well mixed；
Feed the mixture into and pelletizing is carried out in palletizing device 4, obtain mother bulb；
Iron content tailings is sent into size mixing device 2 and sized mixing, obtains tailings mud；
It will stir, and pressurizeed in tailings mud agitating device 3, obtain pressurized mud；
Pressurized mud is sent into palletizing device 4, and is uniformly ejected on mother bulb, secondary pelletizing is carried out with compound, obtains
Obtain carbonaceous pelletizing；
Carbonaceous pelletizing is sent into reduction apparatus 5 and reduced, obtains metallized pellet.
The iron content tailings that the utility model uses is the aqueous tailings after metal smelting.Coloured or smelting iron and steel tailings includes
The aqueous iron-bearing materials such as copper ashes, steel mill sludge after red mud, the lead cadmia of hydrometallurgy, pyrometallurgical smelting after dilution.It is coloured or
Aqueous tailings in smelting iron and steel typically will could be stored up or use after the steps such as press filtration, pelletizing mode of the present utility model
Pelletizing directly is carried out using aqueous secondary tailings, saves press filtration step above, and need not in follow-up balling process
Volume external adding water, save water consumption.
In balling process, pelletizing is carried out using carbonaceous material as mother bulb, during reduction, the carbon gasification of kernel,
Through the mud of outer layer, pelletizing stomata can be increased, be advantageous to the progress of reduction reaction.The CO of gasification can be gone back with iron simultaneously
Original, improve reduction effect.
By the way of sprinkling tailings uniformly can close very much with carbon raw material, mitigate batch mixing burden early stage, improve batch mixing
Efficiency.
Below with reference to specific embodiment, the utility model is illustrated.Institute's taking technique condition value in following embodiments
It is exemplary, its desirable number range is as shown in foregoing utility model content.Detection method used in following embodiments
It is the conventional detection method of the industry.
Embodiment 1
Metallized pellet is prepared using the system shown in Fig. 1, idiographic flow is as follows：
The iron content tailings that the present embodiment uses is red mud mud, concentration 60wt%, is sent in size mixing device 2 and carries out
Size mixing, obtain the tailings mud that concentration is 30wt%.It will stir, and pressurizeed in tailings mud agitating device 3, obtained
Pressurized mud, pressure 60kg/cm2。
The carbonaceous material that the present embodiment uses is anthracite, and additive is lime stone.Anthracite and lime stone are sent into mixed
Expect device 1, be 25 according to mass ratio:10 ratio is well mixed, and obtains compound.Feed the mixture into palletizing device 4
Row pelletizing, obtain a diameter of 2mm or so mother bulb.
Pressurized mud is sent into palletizing device 4, and is uniformly ejected on mother bulb, secondary pelletizing is carried out with compound, obtains
Obtain carbonaceous pelletizing.The weight of compound of the addition of pressurized mud with adding is identical.
Carbonaceous pelletizing is sent into reduction apparatus 5 and reduced, obtains metallized pellet.
By detection, the average pelletizing of carbonaceous pelletizing is dry, wet bulb drop strength ＞ 8 times.
Embodiment 2
Metallized pellet is prepared using the system shown in Fig. 1, idiographic flow is as follows：
The iron content tailings that the present embodiment uses is copper ashes mud, concentration 65wt%, is sent in size mixing device 2 and carries out
Size mixing, obtain the tailings mud that concentration is 40wt%.It will stir, and pressurizeed in tailings mud agitating device 3, obtained
Pressurized mud, pressure 90kg/cm2。
The carbonaceous material that the present embodiment uses is coke powder, and additive is lime stone, and binding agent is starch.By coke powder, lime
Stone and starch are sent into mixing device 1, are 30 according to mass ratio：10：3 ratio is well mixed, and obtains compound.Compound is sent
Enter and pelletizing is carried out in palletizing device 4, obtain a diameter of 3mm or so mother bulb.
Pressurized mud is sent into palletizing device 4, and is uniformly ejected on mother bulb, carries out secondary pelletizing, acquisition contains carbon ball
Group.The addition of pressurized mud is 1.2 times of the compound weight added.
Carbonaceous pelletizing is sent into reduction apparatus 5 and reduced, obtains metallized pellet.
By detection, the average pelletizing of carbonaceous pelletizing is dry, wet bulb drop strength ＞ 10 times.
Embodiment 3
Metallized pellet is prepared using the system shown in Fig. 1, idiographic flow is as follows：
The iron content tailings that the present embodiment uses is lead cadmia mud, concentration 60wt%, is sent in size mixing device 2 and carries out
Size mixing, obtain the tailings mud that concentration is 70wt%.It will stir, and pressurizeed in tailings mud agitating device 3, obtained
Pressurized mud, pressure 200kg/cm2。
The carbonaceous material that the present embodiment uses is semi-coke, and additive is dolomite, and binding agent is bentonite.By semi-coke, in vain
Marble and bentonite are sent into mixing device 1, are 28 according to mass ratio：5：5 ratio is well mixed, and obtains compound.Will mixing
Material is sent into palletizing device 4 and carries out pelletizing, obtains a diameter of 2mm or so mother bulb.
Pressurized mud is sent into palletizing device 4, and is uniformly ejected on mother bulb, carries out secondary pelletizing, acquisition contains carbon ball
Group.The addition of pressurized mud is add compound weight 1.5 times.
Carbonaceous pelletizing is sent into reduction apparatus 5 and reduced, obtains metallized pellet.
By detection, the average pelletizing of carbonaceous pelletizing is dry, wet bulb drop strength ＞ 11 times.
It was found from above-described embodiment, carbonaceous pelletizing intensity made from the utility model is high, is crushed in reduction process few.
To sum up, the utility model carries out pelletizing by way of spraying into aqueous tailings pelletizing, can directly utilize aqueous tail
Slag, it is not necessary to the processing of step such as filtered, dried, crushed to aqueous tailings again.
The utility model can be such that tailings is uniformly mixed with carbon raw material by the way of sprinkling, mitigate batch mixing early stage and bear
Load, improve batch mixing efficiency.
The addition for preparing carbonaceous pelletizing forming process reclaimed water can be greatly reduced in the utility model.
Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, other differences can also be made on the basis of the above description
The change or variation of form.There is no necessity and possibility to exhaust all the enbodiments.And thus amplify out aobvious and
Among the change or variation being clear to are still in the scope of protection of the utility model.
Claims (2)
- A kind of 1. pelletizing system of metallized pellet, it is characterised in that including：Mixing device, exported provided with carbonaceous material entrance, additive entrance and compound；Size mixing device, provided with iron content tailings entrance and tailings slurry outlet；Agitating device, exported provided with tailings mud entrance and pressurized mud, the tailings mud entrance and the size mixing device Tailings slurry outlet is connected；The pressurized mud outlet of the agitating device is provided with pressure-applying unit；Palletizing device, exported provided with compound entrance, pressurized mud entrance and carbonaceous pelletizing, the compound entrance mixes with described Expect that the compound outlet of device is connected, the pressurized mud entrance is connected with the pressurized mud outlet of the agitating device；Reduction apparatus, exported provided with carbonaceous pelletizing entrance and metallized pellet, the carbonaceous pelletizing entrance and the palletizing device Carbonaceous pelletizing outlet be connected.
- 2. pelletizing system according to claim 1, it is characterised in that the mixing device also includes binding agent entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720599277.XU CN206828603U (en) | 2017-05-25 | 2017-05-25 | A kind of pelletizing system of metallized pellet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720599277.XU CN206828603U (en) | 2017-05-25 | 2017-05-25 | A kind of pelletizing system of metallized pellet |
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| Publication Number | Publication Date |
|---|---|
| CN206828603U true CN206828603U (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720599277.XU Expired - Fee Related CN206828603U (en) | 2017-05-25 | 2017-05-25 | A kind of pelletizing system of metallized pellet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058726A (en) * | 2017-05-25 | 2017-08-18 | 江苏省冶金设计院有限公司 | The pelletizing system and pelletizing process of a kind of metallized pellet |
-
2017
- 2017-05-25 CN CN201720599277.XU patent/CN206828603U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058726A (en) * | 2017-05-25 | 2017-08-18 | 江苏省冶金设计院有限公司 | The pelletizing system and pelletizing process of a kind of metallized pellet |
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Effective date of registration: 20190102 Granted publication date: 20180102 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180102 Termination date: 20190525 |