CN106011491A - Method for improving cooling efficiency of titanium slag - Google Patents
Method for improving cooling efficiency of titanium slag Download PDFInfo
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- CN106011491A CN106011491A CN201610410618.4A CN201610410618A CN106011491A CN 106011491 A CN106011491 A CN 106011491A CN 201610410618 A CN201610410618 A CN 201610410618A CN 106011491 A CN106011491 A CN 106011491A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses a method for improving the cooling efficiency of titanium slag and belongs to the technical field of titanium slag smelting. According to the method, a porous rotary drum which rotates is adopted for pelletizing molten titanium slag, pelletized titanium slag is quenched with nitrogen, cooled pelletized titanium slag is screened and crushed, and finished titanium slag is obtained. By means of the method, the problem that the water consumption of a traditional titanium slag cooling method is large can be solved, moreover, the procedures of slag basin or slag tank preparation, slag hanging, slag block crushing and the like can be omitted, the out-of-furnace cooling treatment procedure of the titanium slag is greatly simplified, the cooling time of the titanium slag is shortened, the cooling efficiency is increased by 3-4 times, and the cooling cost of the titanium slag is reduced.
Description
Technical field
The invention belongs to titanium slag technical field of smelting, relate to a kind of titanium slag cooling treatment method, be specifically related to a kind of raising titanium slag cold
But the method for efficiency.
Background technology
The current both at home and abroad titanium slag cooling prevailing technology that electric furnace produces is: melted titanium slag enters slag basin or slag ladle (slag basin dress after coming out of the stove
The quantity of slag about 5～15 tons, the slag ladle dress quantity of slag about 20～40 tons, according to electric furnace go out the quantity of slag may select slag basin 4～10 or slag ladle 2～
4), after standing 10～20min in slag basin or slag ladle water-spraying control, until titanium slag surface is cooled to less than 200 DEG C, its
Cool time about 4.5～6h, in slag ladle, titanium slag is longer compared with slag basin for cool time.The big clinker of densification, clinker is formed after titanium slag cooling
After coming off from slag basin or slag ladle, through hydraulic hammer, clinker one being divided into four, now clinker internal temperature about 400～600 DEG C, enter one
Step water-spraying control titanium slag is to room temperature.After hammer is broken, titanium slag crushes through Hubei Province formula and obtains little clinker titanium slag, and little clinker titanium slag breaks through hammer again
Broken machine or ball mill obtain particulate titanium slag, and particulate titanium slag obtains finished product titanium slag after metering packing.
Existing titanium slag cooling processes technique and has that cooling effectiveness is low, length cool time, water consumption big, technological process is long, it is desirable to slag
The shortcomings such as awkward silence at a meeting ground broken cost the biggest, follow-up is high and broken new product particle diameter difference is big, limit titanium slag production capacity promote, resistance
Titanium slag smelting technique has been hindered to optimize and the reduction of production cost.It is an object of the invention to provide a kind of high efficiency titanium slag cooling to process
Method, the method not only can solve the problem that titanium slag cooling water consumption is big, and can save remove slag basin or slag ladle preparation, hang slag and slag
The flow processs such as block is broken, greatly simplifie titanium slag and come out of the stove cooling treatment process, shorten its cool time, improve cooling effectiveness 3～4
Times, reduce titanium slag cooling cost greatly.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of high efficiency titanium slag cooling treatment method, and the method comprises the following steps:
A, the granulation of melted titanium slag:
Melted titanium slag after coming out of the stove enters in the porous turning barrel of turning barrel pelletizer, along with the high-speed rotation of porous turning barrel, and melted titanium slag
It is thrown out of from hole, in nitrogen atmosphere, is then granulated into granule, obtain being granulated titanium slag；
B, the quick cooling of granulation titanium slag:
Above-mentioned granulation titanium slag is sent into surrounding and leads to the feed bin of nitrogen, be cooled to 100～150 DEG C；The flow of described nitrogen is
1000～1500L/min；
C, cooling granulation titanium slag post processing:
Granulation titanium slag after cooling down step b sieves, crushes, and obtains finished product titanium slag.
Wherein, in the method step a of above-mentioned raising titanium slag cooling effectiveness, the rotating speed of described porous turning barrel is 400～900r/min,
Bore dia is 15～40mm.
Wherein, in the method step a of above-mentioned raising titanium slag cooling effectiveness, the flow of described nitrogen is 80～150L/min.
Wherein, in the method step a of above-mentioned raising titanium slag cooling effectiveness, the temperature of gained granulation titanium slag is 1000～1200 DEG C.
Wherein, in the method step b of above-mentioned raising titanium slag cooling effectiveness, the flow direction of described nitrogen is from feed bin bottom upwards
And vertical with titanium slag flow direction combine.
Wherein, the method for above-mentioned raising titanium slag cooling effectiveness, in step a and b with titanium slag heat exchange after nitrogen after cooling may be used
It is cycled to used in step a and b.
Wherein, in the method step c of above-mentioned raising titanium slag cooling effectiveness, described screening referred to 20 mesh and 140 mesh double deck screens.
Wherein, in the method for above-mentioned raising titanium slag cooling effectiveness, described porous turning barrel a diameter of 1～1.5m, turning barrel height 2～3m；
A diameter of the 8～12m of described turning barrel pelletizer, fence high 3～4m.
The invention has the beneficial effects as follows:
The inventive method belongs to dry method titanium slag cooling treatment method, whole process without water consumption, and save in conventional processes slag basin or
The operations such as slag ladle prepares, to hang slag and clinker broken, greatly simplifie the handling process after titanium slag is come out of the stove, save titanium slag cooling
The process time, raising cooling effectiveness 3～4 times, reduce titanium slag cooling cost, the cooling process for melted titanium slag provides one
The new method that efficiency is high, simple to operate, economical and practical.
Detailed description of the invention
The invention provides a kind of high efficiency titanium slag cooling treatment method, this technical scheme passes through rotating porous turning barrel to molten titanium
Slag is granulated, and by nitrogen, granulation titanium slag is carried out chilling, and screened the crushing of granulation titanium slag after cooling obtains different-grain diameter
Titanium slag, different-grain diameter titanium slag is respectively used to different purposes.The method specifically includes following steps:
A, the granulation of melted titanium slag:
Melted titanium slag enters after coming out of the stove in the porous turning barrel of turning barrel pelletizer, and melted titanium slag turns at porous turning barrel 200～600r/min
Rotarily drive under speed, throw away from hole, then in flow 80～150L/min nitrogen protection atmosphere, be granulated into granule, obtain temperature
Degree is the granulation titanium slag of 1000～1200 DEG C；
B, the quick cooling of granulation titanium slag:
Above-mentioned granulation titanium slag being sent into surrounding and leads to the feed bin of nitrogen, nitrogen flow is 1000～1500L/min, controls granulation titanium
Slag fast cooling is to 100～150 DEG C；
C, cooling granulation titanium slag post processing:
After step b has cooled down, to the granulation titanium slag screening after cooling, crush, obtain finished product titanium slag.
Wherein, in the method step a of above-mentioned raising titanium slag cooling effectiveness, use the granulation titanium slag that the turning barrel of high speed rotating obtains,
Particle size diminishes, and specific grain surface is long-pending to be increased, and carries out nitrogen charging while granulation, can accelerate titanium slag cooling in a nitrogen atmosphere,
Avoid grain slag again to sinter in bulk, titanium slag granulation can be effectively facilitated；Granulation is led to nitrogen and is effectively avoided and reduce slag
Middle titanium dioxide is changed into the probability of rutile, it is ensured that the subsequent technique requirement to titanium slag quality.
Wherein, in the method step a of above-mentioned raising titanium slag cooling effectiveness, in order to obtain, size is properly uniform and quality is more excellent
Titanium slag, technique scheme strictly to control rotating speed and the nitrogen flow of turning barrel.Inventor only finds through substantial amounts of experiment
Have when porous turning barrel rotating speed is 400～900r/min, titanium after guarantee granulated processed when nitrogen flow is 80～150L/min
20 mesh sieves can be passed through in slag particle footpath more than 90%, and in slag, rutile titanium dioxide content is few, reaches subsequent technique and uses requirement；
If turning barrel pelletizer rotating speed is too low, nitrogen flow is little, titanium slag not only can not fully lower the temperature, the slag particle that obtains is relatively big, also needs into one
Step is broken could be used, and slag titanium oxide at a middle or low price may be oxidized to rutile titanium dioxide, reduces titanium slag quality.
Wherein, in the method step a of above-mentioned raising titanium slag cooling effectiveness, the bore dia of described porous turning barrel is 15～40mm,
The spacing of Kong Yukong is 8～12mm, and percent opening is the bigger the better, so that melted titanium slag is under turning barrel high speed rotating, by centrifugal masterpiece
Throw away with from hole, after nitrogen cools down, be granulated into granule.
Wherein, in the method step b of above-mentioned raising titanium slag cooling effectiveness, the flow of described nitrogen is 1000～1500L/min,
The flow direction of nitrogen is for from feed bin bottom upwards and vertical with titanium slag flow direction combine.Granulation titanium slag falls from feed bin top,
For improving cooling efficiency, nitrogen runs up to feed bin bottom, and the nitrogen flow direction in feed bin surrounding hangs down with slag flow path direction simultaneously
Directly, both combinations ensure that nitrogen flow is maximum, maximally effective nitrogen can be utilized to lower the temperature titanium slag, and rate of temperature fall is fast and work
Skill is arranged simple.Nitrogen flow direction herein is not limited to contrary with slag flow path direction or just 90 degree, when slag flow path direction and nitrogen
Multiple flow direction is used in combination in the range of less than 180 degree and all can realize technical solution of the present invention.
Wherein, in method step a and b of above-mentioned raising titanium slag cooling effectiveness, the temperature of described nitrogen is 10～42 DEG C.
Further, technical solution of the present invention is applicable to porous turning barrel a diameter of 1～1.5m, turning barrel height 2～3m, turning barrel grain
Changing a diameter of the 8～12m of device, the equipment of fence high 3～4m uses.
Wherein, the method for above-mentioned raising titanium slag cooling effectiveness, in step a and b with titanium slag heat exchange after nitrogen after cooling may be used
It is cycled to used in step a and b.
Wherein, in the method step c of above-mentioned raising titanium slag cooling effectiveness, described screening is that the granulation titanium slag after cooling down crosses 20 mesh
With 140 mesh double deck screens.
Wherein, in the method step c of above-mentioned raising titanium slag cooling effectiveness, in 20～140 mesh obtained after screening and slag, calcium and magnesium contains
Amount meets the granule of chloridization process and produces for titanium tetrachloride, and under 140 mesh sieves, granule produces for sulfate process titanium dioxide, on 20 mesh sieves
Granule sieves after ball milling again.
In technical solution of the present invention, cooling medium need not water, and follow-up also without being dried, and can save great lot of water resources；Grain
Titanium slag after change is directly entered screening, and only the bulky grain of 10% also needs ball-milling treatment, and the different-grain diameter titanium slag obtained can obtain
Effectively use.This technical thought eliminates slag basin or slag ladle and prepares, hangs slag and the flow process such as clinker is broken, greatly simplifies titanium slag
Come out of the stove cooling treatment process, shorten titanium slag cool time, improve titanium slag cooling effectiveness, greatly reduce titanium slag and be cooled to
This, it is achieved that the economical rationality of different-grain diameter titanium slag utilizes.
Below in conjunction with embodiment, the detailed description of the invention of the present invention is further described, the most therefore limits the present invention to institute
Among the scope of embodiments stated.
Embodiment 1
The method improving titanium slag cooling effectiveness, specifically includes following steps:
A, the granulation of melted titanium slag:
Melted titanium slag enters after coming out of the stove in the porous turning barrel of turning barrel pelletizer (bore dia 15mm), and melted titanium slag is at porous turning barrel
Rotarily drive under 400r/min rotating speed, throw away from hole, then in flow 100L/min nitrogen protection atmosphere, be granulated into granule,
Obtain the granulation titanium slag that temperature is 1175 DEG C；Wherein, a diameter of 1m of porous turning barrel, turning barrel height 2m, turning barrel pelletizer straight
Footpath is 10m, fence height 3m；
B, the quick cooling of granulation titanium slag:
Above-mentioned granulation titanium slag being sent into surrounding and leads to the feed bin of nitrogen, nitrogen flow is 1400L/min, controls granulation titanium slag quick
It is cooled to 143 DEG C；Wherein, the flow direction of nitrogen is for from feed bin bottom upwards and vertical with titanium slag flow direction combine；
In step a and b, the temperature of nitrogen is 10 DEG C, and the nitrogen after heat exchange is circularly used for step a and b after cooling；
C, cooling granulation titanium slag post processing:
After step b has cooled down, the granulation titanium slag after cooling is crossed 20 mesh and 140 mesh double deck screens, can be by 20 mesh sieves
Titanium slag accounts for 91.32%.In 20～140 mesh obtained after screening and slag, calcium-magnesium content meets the granule of chloridization process for titanium tetrachloride
Producing, under 140 mesh sieves, granule produces for sulfate process titanium dioxide, row screening again after grain breakage on 20 mesh sieves.
Embodiment 2
The method improving titanium slag cooling effectiveness, specifically includes following steps:
A, the granulation of melted titanium slag:
Melted titanium slag enters after coming out of the stove in the porous turning barrel of turning barrel pelletizer (bore dia 35mm), and melted titanium slag is at porous turning barrel
Rotarily drive under 900r/min rotating speed, throw away from hole, then in flow 120L/min nitrogen protection atmosphere, be granulated into granule,
Obtain the granulation titanium slag that temperature is 1094 DEG C；Wherein, a diameter of 1m of porous turning barrel, turning barrel height 2m, turning barrel pelletizer straight
Footpath is 10m, fence height 3m；
B, the quick cooling of granulation titanium slag:
Above-mentioned granulation titanium slag being sent into surrounding and leads to the feed bin of nitrogen, nitrogen flow is 1200L/min, controls granulation titanium slag quick
It is cooled to 127 DEG C；Wherein, the flow direction of nitrogen is for from feed bin bottom upwards and vertical with titanium slag flow direction combine；
In step a and b, the temperature of nitrogen is 20 DEG C, and the nitrogen after heat exchange is circularly used for step a and b after cooling；
C, cooling granulation titanium slag post processing:
After step b has cooled down, the granulation titanium slag after cooling is crossed 20 mesh and 140 mesh double deck screens, can be by 20 mesh sieves
Titanium slag accounts for 95%.In 20～140 mesh obtained after screening and slag, calcium-magnesium content meets the granule of chloridization process for titanium tetrachloride life
Producing, under 140 mesh sieves, granule produces for sulfate process titanium dioxide, row screening again after grain breakage on 20 mesh sieves.
Claims (8)
1. the method improving titanium slag cooling effectiveness, it is characterised in that the method comprises the following steps:
A, the granulation of melted titanium slag:
Melted titanium slag after coming out of the stove enters in the porous turning barrel of turning barrel pelletizer, along with the high-speed rotation of porous turning barrel, and melted titanium slag
It is thrown out of from hole, in nitrogen atmosphere, is then granulated into granule, obtain being granulated titanium slag；
B, the quick cooling of granulation titanium slag:
By the feed bin that above-mentioned granulation titanium slag feeding nitrogen flow is 1000～1500L/min, it is cooled to 100～150 DEG C；
C, cooling granulation titanium slag post processing:
Granulation titanium slag after cooling down step b sieves, crushes, and obtains finished product titanium slag.
The method of raising titanium slag cooling effectiveness the most according to claim 1, it is characterised in that in step a, described porous
The rotating speed of turning barrel is 400～900r/min, and bore dia is 15～40mm.
The method of raising titanium slag cooling effectiveness the most according to claim 1, it is characterised in that in step a, described nitrogen
Flow be 80～150L/min.
The method of raising titanium slag cooling effectiveness the most according to claim 1, it is characterised in that in step a, the grain obtained
Changing titanium slag temperature is 1000～1200 DEG C.
The method of raising titanium slag cooling effectiveness the most according to claim 1, it is characterised in that in step b, described nitrogen
Flow direction for from feed bin bottom upwards and vertical with titanium slag flow direction combine.
The method of raising titanium slag cooling effectiveness the most according to claim 1, it is characterised in that with titanium slag in step a and b
Nitrogen after heat exchange is circularly used for step a and b after cooling.
The method of raising titanium slag cooling effectiveness the most according to claim 1, it is characterised in that in step c, described screening
Referred to 20 mesh and 140 mesh double deck screens.
The method of raising titanium slag cooling effectiveness the most according to claim 1, it is characterised in that the diameter of described porous turning barrel
Be 1～1.5m, turning barrel height 2～3m；A diameter of the 8～12m of described turning barrel pelletizer, fence high 3～4m.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745224A (en) * | 2017-04-01 | 2017-05-31 | 攀钢集团研究院有限公司 | The method for keeping titanium slag middle or low price Ti content stabilization |
| CN106904845A (en) * | 2017-04-01 | 2017-06-30 | 攀钢集团研究院有限公司 | The production method of the special titanium slag of sulfate process titanium dioxide |
| CN107686867A (en) * | 2017-09-11 | 2018-02-13 | 攀钢集团研究院有限公司 | Cooling treatment method and its slag basin for titanium slag of coming out of the stove |
| CN109182773A (en) * | 2018-10-18 | 2019-01-11 | 广东华劲金属型材有限公司 | A kind of aluminium ingot slagging-off nitrogen cooling treatment method |
| CN111717933A (en) * | 2020-06-29 | 2020-09-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Reduce rutile type TiO in titanium slag2Titanium slag rapid cooling system and method |
| CN112024109A (en) * | 2020-08-25 | 2020-12-04 | 攀钢集团重庆钒钛科技有限公司 | Titanium dioxide particle size distribution control method |
| CN112267032A (en) * | 2020-10-19 | 2021-01-26 | 攀钢集团钛业有限责任公司 | Hanging slag wedge and manufacturing method thereof |
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| CN105463192A (en) * | 2016-02-01 | 2016-04-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium slag cooling treatment method |
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| CN103789468A (en) * | 2013-11-03 | 2014-05-14 | 北京工业大学 | Liquid blast furnace slag granulating device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745224A (en) * | 2017-04-01 | 2017-05-31 | 攀钢集团研究院有限公司 | The method for keeping titanium slag middle or low price Ti content stabilization |
| CN106904845A (en) * | 2017-04-01 | 2017-06-30 | 攀钢集团研究院有限公司 | The production method of the special titanium slag of sulfate process titanium dioxide |
| CN106745224B (en) * | 2017-04-01 | 2018-10-30 | 攀钢集团研究院有限公司 | The method for keeping titanium slag middle or low price Ti content to stablize |
| CN107686867A (en) * | 2017-09-11 | 2018-02-13 | 攀钢集团研究院有限公司 | Cooling treatment method and its slag basin for titanium slag of coming out of the stove |
| CN109182773A (en) * | 2018-10-18 | 2019-01-11 | 广东华劲金属型材有限公司 | A kind of aluminium ingot slagging-off nitrogen cooling treatment method |
| CN111717933A (en) * | 2020-06-29 | 2020-09-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Reduce rutile type TiO in titanium slag2Titanium slag rapid cooling system and method |
| CN112024109A (en) * | 2020-08-25 | 2020-12-04 | 攀钢集团重庆钒钛科技有限公司 | Titanium dioxide particle size distribution control method |
| CN112267032A (en) * | 2020-10-19 | 2021-01-26 | 攀钢集团钛业有限责任公司 | Hanging slag wedge and manufacturing method thereof |
| CN112267032B (en) * | 2020-10-19 | 2022-05-31 | 攀钢集团钛业有限责任公司 | Hanging slag wedge and manufacturing method thereof |
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| CN106011491B (en) | 2018-03-06 |
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