CN206256124U - A kind of system for reducing v-ti magnetite pellet ore reduction efflorescence - Google Patents
A kind of system for reducing v-ti magnetite pellet ore reduction efflorescence Download PDFInfo
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- CN206256124U CN206256124U CN201621254014.7U CN201621254014U CN206256124U CN 206256124 U CN206256124 U CN 206256124U CN 201621254014 U CN201621254014 U CN 201621254014U CN 206256124 U CN206256124 U CN 206256124U
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- magnetite
- charging aperture
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- discharging opening
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Abstract
The utility model discloses a kind of system for reducing v-ti magnetite pellet ore reduction efflorescence.The system includes：Fine mill, mixing device, palletizing device and calciner；Wherein, the v-ti magnetite miberal powder discharging opening of the fine mill is connected with the v-ti magnetite miberal powder charging aperture of the mixing device；The compound discharging opening of the mixing device is connected with the compound charging aperture of the palletizing device；The green-ball discharging opening of the palletizing device is connected with the green-ball charging aperture of the calciner.The utility model system effectively reduces the reduction and pulverization ratio of v-ti magnetite pellet, improves the metallurgical performance during pellet smelting reducing.
Description
Technical field
The utility model is related to a kind of system for reducing v-ti magnetite pellet ore reduction efflorescence, belongs to vanadium titano-magnetite metallurgical
Pelletizing production field.
Background technology
V-ti Bearing Magnetite Pellets will occur different degrees of efflorescence, with smelting condition during smelting reducing
Change, efflorescence degree difference is larger, and some efflorescence are lighter, and some efflorescence are serious, and serious influence furnace condition anterograde is reduced and smelts effect
Rate, increases smelting cost.Accordingly, it is capable to a kind of skill of the no efflorescence in the pelletizing production stage finds suppression and reduces reduction process
Art, has realistic meaning to the utilization of v-ti magnetite ore resources.
The A of Chinese patent application publication No. CN 104060083 disclose a kind of sintering method of vanadium titano-magnetite, and its is main
It is technically characterized in that：According to SINTERING PRODUCTION technique, by dispensing, primary and secondary mixing, cloth, light a fire, carry out v-ti magnetite
Ore deposit sintering deposit is produced, and is used for blast furnace.The technique is disadvantageous in that it is to provide a kind of vanadium titano-magnetite application method,
Vanadium-titanium sinter is produced according to sintering process, but do not take preventive measures solve smelting reducing during efflorescence ask
Topic.
The A of Chinese patent application publication No. CN 102485921 disclose a kind of Pellet production method of v-ti magnetite concentrate,
Roller mill is carried out to vanadium titano-magnetite using high-pressure roller mill, then pelletizing after uniformly mixing with certain proportion binding agent, improve vanadium titanium
The balling ratio of magnetic iron ore, reduces bentonite consumption, improves into stove ore deposit grade.The technique is disadvantageous in that：Using pelletizing process
It is also that physics mode treatment has been carried out to vanadium titano-magnetite raw material to process vanadium titano-magnetite, effect occurs in pellet roasting rank
Section, improves into stove ore deposit grade, but powder phenomenon-tion to pellet in the smelting reducing stage does not have precautionary measures.
The A of Chinese patent application publication No. CN 104278143 disclose a kind of suppression vanadium-titanium sinter low temperature efflorescence
Novel binders, it is mainly characterized by：Vanadium-titanium sinter is produced according to sintering process, then by new additive agent
Mix with water according to a certain ratio, be sprayed on finished product sintering deposit and suppress the problem of vanadium-titanium sinter reduction degradation to reach.
The technique the disadvantage is that, finished product sintering deposit sprinkling the aqueous solution, due to high-temperature quenching, cause internal stress to increase, burning can be reduced
Tie the intensity of ore deposit.
It would therefore be highly desirable to develop a kind of can effectively reduce pulverizing problem of the v-ti magnetite pellet during smelting reducing
System.
Utility model content
Technical problem to be solved in the utility model is to provide and a kind of reduce v-ti magnetite pellet ore reduction efflorescence and be
System.
In order to solve the above technical problems, technical solution adopted in the utility model is：
A kind of system for reducing v-ti magnetite pellet ore reduction efflorescence, including：Fine mill, mixing device, palletizing device
And calciner.
Wherein, the fine mill is provided with vanadium titano-magnetite charging aperture and v-ti magnetite miberal powder discharging opening；The batch mixing dress
V-ti magnetite miberal powder charging aperture, bentonite charging aperture and compound discharging opening are installed；The palletizing device is provided with compound and enters
Material mouth and green-ball discharging opening, the palletizing device is additionally provided with boric acid aqueous solution charging aperture, for adding boric acid aqueous solution；The roasting
Burn device and be provided with green-ball charging aperture and V-ti Bearing Magnetite Pellets ore deposit discharging opening.
Further, the v-ti magnetite miberal powder of the v-ti magnetite miberal powder discharging opening of the fine mill and the mixing device
Charging aperture is connected；The compound discharging opening of the mixing device is connected with the compound charging aperture of the palletizing device；It is described to make
The green-ball discharging opening of ball device is connected with the green-ball charging aperture of the calciner.
System described in the utility model, vanadium titano-magnetite enters fine mill through vanadium titano-magnetite charging aperture, by vanadium titanium magnetic
Iron ore is levigate, obtains v-ti magnetite miberal powder；V-ti magnetite miberal powder enters batch mixing through the v-ti magnetite miberal powder charging aperture of mixing device
Device, bentonite enters mixing device through the bentonite charging aperture of mixing device, and v-ti magnetite miberal powder is filled with bentonite in batch mixing
It is well mixed in putting, obtains compound；Compound carries out pelletizing through the compound charging aperture of palletizing device into palletizing device, obtains
To green-ball；Wherein, in balling process, first boric acid is mixed according to a certain percentage with pelletizing water, is configured to required concentration
Boric acid aqueous solution, puts into the case that adds water of pelletizing water, is added water link using pellet production pelletizing operation, and boric acid is water-soluble
As green-ball is grown up the process for adding water, equably be sprayed onto boric acid aqueous solution in green-ball as pelletizing pelletizing water by liquid；Green-ball
The green-ball charging aperture of fired device is calcined into calciner, that is, obtain V-ti Bearing Magnetite Pellets ore deposit.
Palletizing device described in the utility model is selected from disc balling machine or pelletising drum.
Calciner described in the utility model is selected from grate kiln, belt type roasting machine or shaft furnace.
" connected " described in the utility model can be fixedly connected, or be detachably connected；Can mechanically connect,
It can also be electrical connection；Can be directly connected to, or be indirectly connected to by intermediary.
Technical solutions of the utility model compared with prior art, have the advantages that：
The utility model is added water link in pellet production process using pelletizing operation, by a certain proportion of boric acid with
Pelletizing water is mixed and made into boric acid aqueous solution, as green-ball is grown up the process for adding water, boric acid aqueous solution equably is added into green-ball
In, then complete whole pelletizing production process.
The utility model in pellet-roasting heating process, is reduced liquid phase and forms temperature using the characteristic of boric acid low melting point
Degree, reduces nodulizing apparent porosity, reduces the speed of low temperature efflorescence reaction, so as to improve v-ti magnetite pellet smelt also
Metallurgical performance during original.
Significantly, metallurgical properties index is obviously improved the utility model system effect.
Brief description of the drawings
Fig. 1 is the structural representation of the system that the utility model implements reduction v-ti magnetite pellet ore reduction pulverization methods.
Specific embodiment
Further describe the utility model with reference to specific embodiment, advantage of the present utility model and feature will be with
Description and it is apparent.It should be understood that the embodiment is only exemplary, scope of the present utility model is not constituted and is appointed
What is limited.It will be understood by those skilled in the art that can be to this reality under without departing from spirit and scope of the present utility model
Modified or replaced with the details and form of new technique scheme, but these modifications or replacement each fall within guarantor of the present utility model
Shield scope.
As shown in figure 1, the utility model is there is provided what a kind of implementation reduced v-ti magnetite pellet ore reduction pulverization methods
System, including：Fine mill 1, mixing device 2, palletizing device 3 and calciner 4.
Wherein, fine mill 1 is provided with vanadium titano-magnetite charging aperture and v-ti magnetite miberal powder discharging opening；Mixing device 2 is provided with
V-ti magnetite miberal powder charging aperture, bentonite charging aperture and compound discharging opening；Palletizing device 3 is provided with compound charging aperture and green-ball
Discharging opening, palletizing device 3 is additionally provided with boric acid aqueous solution water inlet；Calciner 4 is provided with green-ball charging aperture and vanadium titano-magnetite ball
Nodulizing discharging opening.；
Further, the v-ti magnetite miberal powder charging aperture of the v-ti magnetite miberal powder discharging opening of fine mill 1 and mixing device 2
It is connected；The compound discharging opening of mixing device 2 is connected with the compound charging aperture of palletizing device 3；The green-ball discharging of palletizing device 3
Mouth is connected with the green-ball charging aperture of calciner 4.
Used as a kind of implementation method of the present utility model, the palletizing device 3 is selected from disc balling machine or pelletising drum,
The boric acid aqueous solution water inlet is the water inlet of the case that adds water of disc balling machine or pelletising drum；Calciner 4 is selected from chain
Comb machine rotary kiln, belt type roasting machine or shaft furnace.
System described in the utility model, vanadium titano-magnetite enters fine mill 1 through vanadium titano-magnetite charging aperture, by vanadium titanium magnetic
Iron ore is levigate, obtains v-ti magnetite miberal powder；V-ti magnetite miberal powder enters batch mixing through the v-ti magnetite miberal powder charging aperture of mixing device 2
Device 2, bentonite enters mixing device 2 through the bentonite charging aperture of mixing device 2, and v-ti magnetite miberal powder is with bentonite in batch mixing
It is well mixed in device 2, obtains compound；Compound is made through the compound charging aperture of palletizing device 3 into palletizing device 3
Ball, obtains green-ball；In balling process, boric acid and pelletizing water are first mixedly configured into the boric acid aqueous solution of required concentration, put
Enter in the case that adds water of pelletizing water, boric acid aqueous solution as pelletizing pelletizing water equably sprays in green-ball growth process
Spill boric acid aqueous solution；The green-ball charging aperture of the fired device 4 of green-ball is calcined into calciner 4, that is, obtain v-ti magnetite
Ore deposit pellet.
" connected " described in the utility model can be fixedly connected, or be detachably connected；Can mechanically connect,
It can also be electrical connection；Can be directly connected to, or be indirectly connected to by intermediary.
The measure GENERAL EXPERIMENTATION of the V-ti Bearing Magnetite Pellets ore deposit reduction and pulverization ratio prepared by the utility model
1st, material to be tested
V-ti Bearing Magnetite Pellets ore deposit prepared by embodiment 1-3 as described below.
2nd, test method
By national standard《The method of cold rotary drum is used after the static reduction of iron ore low temperature efflorescence experiment》GB/T13242-
1991 are carried out.Measured sample is put into reaction tube, reaction tube is inserted in heating furnace and is heated up, be passed through during to 200 DEG C
N2Protected.When temperature is raised to 500 DEG C and stabilization, it is passed through by CO, CO2、N2The reducing gas of composition carries out static reduction.
Three kinds of compositions of gas are CO 20%, CO in reducing gas220%th, N260%, three kinds of reducing gas total flows are 0.9m3/
H, the recovery time is 1h, then changes logical N2Protection, reduction tube is taken out from stove and is cooled to normal temperature.Sample is fallen from reduction tube
Go out, be put into and turn 300 turns in small drum unit, the time is 10min, is then sieved with 6.3mm, 3.15mm, 0.5mm square hole screen,
Obtained after screening more than 6.3mm, 3.15mm and the material less than 0.5mm, sample before the quality of material and rotary drum after reduction screening
The percentage of the ratio between gross mass is pellet ore reduction pulverization rate.
Embodiment 1
(1) it is vanadium titano-magnetite is levigate, v-ti magnetite miberal powder is obtained, ratio of its granularity requirements less than 0.074mm exists
Between 60%~80%；
(2) v-ti magnetite miberal powder and bentonite are mixed, obtains compound；Specifically match and be, v-ti magnetite miberal powder
95kg, bentonite 5kg；
(3) by compound, (disc balling machine) is made green-ball on pelletizer, and the green-ball is the circle of diameter 10-18mm
Ball；Wherein, add boric acid aqueous solution as pelletizing pelletizing water in balling process, boric acid aqueous solution concentration is 0.1% (quality
Percentage)；The addition point of boric acid aqueous solution is the filling up area of pelletizer, and boric acid and water are first configured to the boric acid water of required concentration
Solution, then add it to the case that adds water of pelletizer, boric acid aqueous solution is equably added into green-ball in green-ball growth process
In.Counted as 100% with vanadium titano-magnetite and bentonitic gross mass, the addition of boric acid aqueous solution is 1%.
(4) by V-ti Bearing Magnetite Pellets, (grate kiln) is calcined on equipment is baked, and sintering temperature is 1150
DEG C, obtain V-ti Bearing Magnetite Pellets ore deposit.
The pellet obtained with the method, reduction and pulverization ratio index is determined according to standard GB/T/T13242-1991.Survey
Determine result to show：With with water compared with V-ti Bearing Magnetite Pellets ore deposit pelletizing water, in the present embodiment, with boric acid aqueous solution as vanadium
The pelletizing water of titanomagnetite pellet, its testing result shows：More than the reduction and pulverization ratio of 6.3mm V-ti Bearing Magnetite Pellets ore deposits
Improve 5.2%；Reduction and pulverization ratio 2.3% is improved more than 3.15mm V-ti Bearing Magnetite Pellets ore deposit；Less than 0.5mm vanadium titano-magnetite balls
Nodulizing reduction and pulverization ratio reduces 2.1%.
Embodiment 2
(1) it is vanadium titano-magnetite is levigate, v-ti magnetite miberal powder is obtained, ratio of its granularity requirements less than 0.074mm exists
Between 60%~80%；
(2) v-ti magnetite miberal powder and bentonite are mixed, obtains compound；Specifically match and be, v-ti magnetite miberal powder
99kg, bentonite 1kg；
(3) by compound, (pelletising drum) is made green-ball on pelletizer, and the green-ball is the circle of diameter 10-18mm
Ball；Wherein, add boric acid aqueous solution as pelletizing pelletizing water in balling process, boric acid aqueous solution concentration is 0.25% (matter
Amount percentage)；The addition point of boric acid aqueous solution is the filling up area of pelletizer, and boric acid and water are first configured to the boric acid of required concentration
The aqueous solution, then add it to the case that adds water of pelletizer, equably boric acid aqueous solution is added in green-ball growth process give birth to
In ball.Counted as 100% with vanadium titano-magnetite and bentonitic quality, the addition of boric acid aqueous solution is 2%.
(4) by V-ti Bearing Magnetite Pellets, (belt type roasting machine) is calcined on equipment is baked, and sintering temperature is 1350 DEG C,
Obtain V-ti Bearing Magnetite Pellets ore deposit.
The pellet obtained with the method, reduction and pulverization ratio index is determined according to standard GB/T/T13242-1991.Survey
Determine result to show：With with water compared with V-ti Bearing Magnetite Pellets ore deposit pelletizing water, in the present embodiment, with boric acid aqueous solution as vanadium
The pelletizing water of titanomagnetite pellet, its testing result shows：More than the reduction and pulverization ratio of 6.3mm V-ti Bearing Magnetite Pellets ore deposits
Improve 8.8%；Reduction and pulverization ratio 4.3% is improved more than 3.15mm V-ti Bearing Magnetite Pellets ore deposit；Less than 0.5mm vanadium titano-magnetite balls
Nodulizing reduction and pulverization ratio reduces 2.3%.
Embodiment 3
(1) it is vanadium titano-magnetite is levigate, v-ti magnetite miberal powder is obtained, ratio of its granularity requirements less than 0.074mm exists
Between 60%~80%；
(2) v-ti magnetite miberal powder and bentonite are mixed, obtains compound；Specifically match and be, v-ti magnetite miberal powder
97kg, bentonite 3kg；
(3) by compound, (pelletising drum) is made green-ball on pelletizer, and the green-ball is the circle of diameter 10-18mm
Ball；Wherein, add boric acid aqueous solution as pelletizing pelletizing water in balling process, boric acid aqueous solution concentration is 0.5% (quality
Percentage)；The addition point of boric acid is the filling up area of pelletizer, and boric acid and water are first configured to the boric acid aqueous solution of required concentration,
In adding it to the case that adds water of pelletizer again, during boric acid aqueous solution equably is added into green-ball in green-ball growth process.With
Vanadium titano-magnetite and bentonitic quality are 100% meter, and the addition of boric acid aqueous solution is 1.5%.
(4) by V-ti Bearing Magnetite Pellets, (shaft furnace) is calcined on equipment is baked, and sintering temperature is 1250 DEG C, obtains vanadium
Titanomagnetite pellet.
The pellet obtained with the method, reduction and pulverization ratio index is determined according to standard GB/T/T13242-1991.Survey
Determine result to show：With with water compared with V-ti Bearing Magnetite Pellets ore deposit pelletizing water, in the present embodiment, with boric acid aqueous solution as vanadium
The pelletizing water of titanomagnetite pellet, its testing result shows：More than the reduction and pulverization ratio of 6.3mm V-ti Bearing Magnetite Pellets ore deposits
Improve 13.8%；Reduction and pulverization ratio 8.3% is improved more than 3.15mm V-ti Bearing Magnetite Pellets ore deposit；Less than 0.5mm vanadium titano-magnetites
Pellet ore reduction pulverization rate reduces 2.5%.
Comparative example
Replace boric acid using calcium chloride：The calcium chloride water of spray concentration 3% on v-ti magnetite pellet surface, wherein
The addition of calcium chloride water accounts for the 4% of v-ti magnetite pellet gross weight, is surveyed according to standard GB/T/T13242-1991
Determine reduction and pulverization ratio index；Compared with vanadium titano-magnetite pelletizing water, in the present embodiment, calcium chloride water is sprayed with water
It is the pelletizing water of v-ti magnetite pellet, its testing result shows：More than the reduction degradation of 3.15mm v-ti magnetite pellets
Rate improves 3.9%.
Claims (3)
1. it is a kind of reduce v-ti magnetite pellet ore reduction efflorescence system, it is characterised in that including：Fine mill, mixing device,
Palletizing device and calciner；
Wherein, the fine mill is provided with vanadium titano-magnetite charging aperture and v-ti magnetite miberal powder discharging opening；The mixing device sets
There are v-ti magnetite miberal powder charging aperture, bentonite charging aperture and compound discharging opening；The palletizing device is provided with compound charging aperture
With green-ball discharging opening；The calciner is provided with green-ball charging aperture and V-ti Bearing Magnetite Pellets ore deposit discharging opening；
The v-ti magnetite miberal powder discharging opening of the fine mill is connected with the v-ti magnetite miberal powder charging aperture of the mixing device；Institute
The compound discharging opening of mixing device is stated to be connected with the compound charging aperture of the palletizing device；The green-ball of the palletizing device goes out
Material mouth is connected with the green-ball charging aperture of the calciner.
2. according to the system described in claim 1, it is characterised in that：The palletizing device is selected from disc balling machine or cylinder pelletizing
Machine.
3. according to the system described in claim 1, it is characterised in that：The calciner is selected from grate kiln, belt and roasts
Burning machine or shaft furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621254014.7U CN206256124U (en) | 2016-11-15 | 2016-11-15 | A kind of system for reducing v-ti magnetite pellet ore reduction efflorescence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621254014.7U CN206256124U (en) | 2016-11-15 | 2016-11-15 | A kind of system for reducing v-ti magnetite pellet ore reduction efflorescence |
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ID=59025277
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| CN201621254014.7U Expired - Fee Related CN206256124U (en) | 2016-11-15 | 2016-11-15 | A kind of system for reducing v-ti magnetite pellet ore reduction efflorescence |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564949A (en) * | 2019-10-22 | 2019-12-13 | 山西太钢不锈钢股份有限公司 | Method for reducing powder content of alkaline pellet |
| CN114480836A (en) * | 2021-12-22 | 2022-05-13 | 武钢集团昆明钢铁股份有限公司 | Low-cost sinter of high-proportion vanadium-titanium magnetite concentrate and preparation method thereof |
-
2016
- 2016-11-15 CN CN201621254014.7U patent/CN206256124U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564949A (en) * | 2019-10-22 | 2019-12-13 | 山西太钢不锈钢股份有限公司 | Method for reducing powder content of alkaline pellet |
| CN110564949B (en) * | 2019-10-22 | 2021-02-19 | 山西太钢不锈钢股份有限公司 | Method for reducing powder content of alkaline pellet |
| CN114480836A (en) * | 2021-12-22 | 2022-05-13 | 武钢集团昆明钢铁股份有限公司 | Low-cost sinter of high-proportion vanadium-titanium magnetite concentrate and preparation method thereof |
| CN114480836B (en) * | 2021-12-22 | 2023-09-12 | 武钢集团昆明钢铁股份有限公司 | Low-cost sinter of high-ratio vanadium-titanium magnetite concentrate and preparation method thereof |
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