CN106745224A - The method for keeping titanium slag middle or low price Ti content stabilization - Google Patents
The method for keeping titanium slag middle or low price Ti content stabilization Download PDFInfo
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- CN106745224A CN106745224A CN201710213053.5A CN201710213053A CN106745224A CN 106745224 A CN106745224 A CN 106745224A CN 201710213053 A CN201710213053 A CN 201710213053A CN 106745224 A CN106745224 A CN 106745224A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
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- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
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- C01—INORGANIC CHEMISTRY
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Abstract
The invention belongs to titanium slag technical field of smelting, and in particular to a kind of method of holding titanium slag middle or low price Ti content stabilization.Titanium slag middle or low price Ti content for prior art production is relatively low, and content it is unstable the problems such as, the present invention provides a kind of method for keeping titanium slag middle or low price Ti content stabilization, cooling, titanium slag thin broken are slightly broken including the cooling of titanium slag surface sprinkling, titanium slag cool down three steps, the mode and intensity of water spray are controlled in each step respectively, the temperature of titanium slag is controlled, so as to keep Low-valent Titanium stable content.The inventive method can effectively control the stability of titanium slag middle or low price Ti content, improve application effect of the titanium slag in sulfate process titanium dioxide production, and production equipment is less demanding, simple to operate, it is adaptable to which that most of titanium slag smelting enterprises carry out Low-valent Titanium control.
Description
Technical field
The invention belongs to titanium slag technical field of smelting, and in particular to a kind of side of holding titanium slag middle or low price Ti content stabilization
Method.
Background technology
Quo of domestic titanium slag smelting industry is started late, each side supporting technology imperfection, for a long time titanium slag production stability
Difference, product index fluctuation is larger.The current domestic still most of use ilmenite concentrates of enterprise for using acid-dissolved titanium slag to produce titanium dioxide,
The method that titanium slag is used in mixed way, user generally reflect low price Ti content it is unstable be influence its titanium dioxide quality stability key
Factor, wants to produce the titanium dioxide of good quality, the low price titanium dioxide (Ti in raw materials for production titanium slag2O3) content need stabilization exist
13% or so.
But at present in country's titanium slag production process, oxygen of the titanium slag middle or low price titanium in cooling is broken is seldom paid close attention in cooling
Change problem, cooling, breaking method differ, and difference on effect is larger, causes finished product slag middle or low price Ti content low and unstable.
The content of the invention
The technical problem to be solved in the present invention is：The titanium slag middle or low price Ti content of prior art production is relatively low, and content is not
The problem of stabilization.
The present invention solve technical problem technical scheme be：A kind of side for keeping titanium slag middle or low price Ti content stable is provided
Method.The method is comprised the following steps：
A, the cooling of titanium slag surface sprinkling
After titanium slag is come out of the stove, uniform water-spraying control treatment is carried out to titanium slag surface in cooled region, injection flow rate is every t titanium slags spray
0.5~2t of water, water spraying time is 2~6h, after water spray terminates 20~30min, detects titanium slag surface temperature, makes temperature≤200 DEG C；
Cooling is broken at the beginning of b, titanium slag
Just tear reason is carried out to step a gained titanium slags, the thick edge damage in side is cooled to surface temperature to the titanium slag surface sprinkling for breaking
≤ 200 DEG C of degree, then it is interrupted water spray；
C, the cooling of titanium slag thin broken
Processed to the granularity for needing after thin broken behind titanium slag central temperature≤100 DEG C, is carried out to titanium slag.
Wherein, in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization, the composition of titanium slag described in step a is：By weight
Amount percentages, TiO270~80%, FeO 4%~15%, balance of impurity.
Wherein, in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization, cooled region uses top spray described in step a
Mode.
Wherein, in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization, uniform water spray uses multitube described in step a
The road mode that water spray or multiple spot spraying head type are sprayed water side by side.
Wherein, in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization, just broken described in step a refers to broken for the first time
Broken, the thin broken refers to further broken.
Wherein, in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization, thick breaking uses large hydraulic described in step b
Hammer.
Wherein, in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization, thick broken particle diameter described in step b for 20~
50cm。
Wherein, in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization, slightly the broken time is 4~8h described in step b.
Wherein, in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization, titanium slag surface sprinkling described in step b is used
Water pipe is uniformly sprayed water, and titanium slag injection flow rate per ton is 0.5~2 ton.
Wherein, in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization, it refers to water spray that water spray is interrupted described in step b
5~10min, stops 20-40min, and water spray stopped process is alternately.
Wherein, it is broken using jaw during thin broken described in step c in the method for above-mentioned holding titanium slag middle or low price Ti content stabilization
One kind in broken machine, ball mill or hammer-crusher.
Beneficial effects of the present invention are：The present invention by being come out of the stove to titanium slag after shattering process carry out temperature stage control,
Adjustment water spray means and pattern, by controlling the cooling technique of titanium slag, reduce the oxidative phenomena of cooling procedure middle or low price titanium, real
Now to the stability contorting of titanium slag low price Ti content of coming out of the stove.The method can effectively control the stability of titanium slag middle or low price Ti content, carry
Application effect of the high titanium slag in sulfate process titanium dioxide production, production equipment is less demanding, simple to operate, it is adaptable to most of titanium slags
Smelting enterprise carries out Low-valent Titanium control.
Specific embodiment
The invention provides a kind of method for keeping titanium slag middle or low price Ti content stabilization.The method is comprised the following steps：
A, surface sprinkling cooling
Titanium slag is transported to cooled region after coming out of the stove, and uniform water-spraying control, cooled region are carried out to titanium slag surface in cooled region
It is top spray pattern to build, by the way of multi-pipeline is sprayed water side by side or multiple spot spraying head type is sprayed water, it is ensured that water spray uniformity and cooling
Intensity, water spraying time control uses 0.5~2t water, stops titanium slag surface after water spray in 2~6h, injection flow rate control in titanium slag per ton
Temperature≤200 DEG C；
Cooling is broken at the beginning of b, titanium slag
After surface cooling terminates, just broken, side is carried out to clinker using the broken machine of large hydraulic hammer or large-scale Hubei Province or cutting machine
Thick edge damage is cooled to surface temperature≤200 DEG C, then be interrupted water spray to the titanium slag surface sprinkling for breaking；
C, titanium slag thin broken
Titanium slag needs to ensure its central temperature≤100 DEG C that thin broken is broken using jaw crusher, ball mill or hammer before starting thin broken
One kind in machine, depending on particle size after cracking is according to product requirement.
The present invention strictly controls each cooling breakage parameter by the cooling crushing stage in titanium slag production process, regulates and controls
Titanium slag middle or low price Ti content, makes Low-valent Titanium be not easy to be oxidized, and keeps the stabilization of titanium slag middle or low price Ti content.
It is of the invention by the way of multi-pipeline is sprayed water side by side or multiple spot spraying head type is sprayed water when surface sprinkling is cooled down, so that
The uniformity of water spray is ensure that, the speed of titanium slag each several part cooling is unanimous on the whole, it is not easy to does not aoxidize, and is sprayed in surface sprinkling
To titanium slag surface temperature≤200 DEG C, it is to avoid the oxidation on titanium slag surface, it is ensured that low price Ti content.
Meanwhile, when cooling is broken at the beginning of titanium slag by the way of being cooled down while broken, just broken titanium slag is fast to the present invention
Speed is cooled to and is crushed to less than 200 DEG C, it is to avoid shattering process is aoxidized.The mode that interruption is sprayed water is taken to ensure that cooling is strong again afterwards
Avoid ponding excessive on the premise of degree, cause following process difficult, influence product moisture.The present invention will slightly break the particle diameter of rear titanium slag
It is controlled to 20~50cm, it is to avoid particle diameter is excessive to cause that follow-up cool time is long, increase following process difficulty, it also avoid grain
It is excessive with oxygen contact area when footpath is too small, so as to accelerate the oxidation of Low-valent Titanium, further maintained by the control of particle diameter
The temperature of titanium slag middle or low price Ti content.
Explanation is further explained to specific embodiment of the invention below by embodiment, but is not indicated that and is sent out this
Bright protection domain is limited in scope described in embodiment.
Embodiment 1 prepares titanium slag with technical solution of the present invention
Titanium slag to producing carries out cooling and crushes, and concrete operations are as follows：
A, surface sprinkling cooling
1668 DEG C of titanium slag tapping temperature, amount of slag 70t is loaded using slag basin, and water-cooled is sampled when coming out of the stove to ensure its Ti2O3
Content accuracy, numbering：Sample 1.Chemical examination obtains the Ti of sample 12O3Content is 19.37%.Slagging tap after finishing, it is cold be transported to slag basin
But region, the uniform water-spraying control by the way of 3 water pipes side by side top spray, water spraying time 4h, injection flow rate 12t/h.Water spray terminates
167 DEG C of titanium slag surface temperature afterwards, about 20min slag basin moisture evaporations are finished, now 189 DEG C of titanium slag surface temperature.
Cooling is broken at the beginning of b, titanium slag
Titanium slag after water-spraying control is transported to just broken place, a bulk blob of slag is carried out just to break using hydraulic hammer broken car, just broken
Process is sprayed water while broken, just break particle diameter between 20~50cm, when it is thick break after the complete blackening in titanium slag surface, surface temperature≤
At 200 DEG C, watered 10min every 0.5h, until bottom surface without obvious ponding and titanium slag surface temperature stabilization within 150 DEG C, it is cold
But thin broken is ready for after 5h, is now sampled, numbered：Sample 2.Chemical examination obtains the Ti of sample 22O3Content is 18.67%, with sample
Product 1 compare its Ti2O3It is basicly stable.
C, titanium slag thin broken
Treat titanium slag central temperature≤100 DEG C, when detection temperature is 76 DEG C, thin broken to be carried out to titanium slag, Powdered Titanium is taken after thin broken
Slag, numbering：Sample 3.Chemical examination obtains the Ti of sample 32O3Content is 18.26%, its Ti compared with sample 1,22O3It is basicly stable,
The purpose of stable low price Ti content is reached.
Embodiment 2 prepares titanium slag with technical solution of the present invention
Titanium slag to producing carries out cooling and crushes, and concrete operations are as follows：
A, surface sprinkling cooling
1682 DEG C of titanium slag tapping temperature, amount of slag 72t is loaded using slag basin, and water-cooled is sampled when coming out of the stove to ensure its Ti2O3Contain
Amount accuracy, numbering：Sample 1.Chemical examination obtains the Ti of sample 12O3Content is 20.27%.Slag tap and slag basin is transported to cooling after finishing
Region, the uniform water-spraying control by the way of 3 water pipes side by side top spray, water spraying time 3.5h, injection flow rate 15t/h.Water spray terminates
172 DEG C of titanium slag surface temperature afterwards, about 30min slag basin moisture evaporations are finished, now 185 DEG C of titanium slag surface temperature.
Cooling is broken at the beginning of b, titanium slag
Titanium slag after water-spraying control is transported to just broken place, a bulk blob of slag is carried out just to break using hydraulic hammer broken car, just broken
Process is sprayed water while broken, just breaks particle diameter in 30cm or so, the complete blackening in titanium slag surface, surface temperature≤200 DEG C after thick broken
When, every 40min water spray 10min, until bottom surface is without obvious ponding and titanium slag surface temperature is stable within 150 DEG C, cooling
Thin broken is ready for after 6.5h, is now sampled, numbered：Sample 2.Chemical examination obtains the Ti of sample 22O3Content is 19.17%, with sample
Product 1 compare its Ti2O3It is basicly stable.
C, titanium slag thin broken
Treat titanium slag central temperature≤100 DEG C, when detection temperature is 62 DEG C, thin broken to be carried out to titanium slag, Powdered Titanium is taken after thin broken
Slag, numbering：Sample 3.Chemical examination obtains the Ti of sample 32O3Content is 18.79%, its Ti compared with sample 1,22O3It is basicly stable,
The purpose of stable low price Ti content is reached.
Embodiment 3 prepares titanium slag with technical solution of the present invention
Titanium slag to producing carries out cooling and crushes, and concrete operations are as follows：
A, surface sprinkling cooling
1668 DEG C of titanium slag tapping temperature, amount of slag 78t is loaded using slag basin, and water-cooled is sampled when coming out of the stove to ensure its Ti2O3Contain
Amount accuracy, numbering：Sample 1.Chemical examination obtains the Ti of sample 12O3Content is 18.34%.Slag tap and slag basin is transported to cooling after finishing
Region, the uniform water-spraying control by the way of 3 water pipes side by side top spray, water spraying time 5h, injection flow rate 13t/h.After water spray terminates
158 DEG C of titanium slag surface temperature, about 30min slag basin moisture evaporations are finished, now 178 DEG C of titanium slag surface temperature.
Cooling is broken at the beginning of b, titanium slag
Titanium slag after water-spraying control is transported to just broken place, a bulk blob of slag is carried out just to break using hydraulic hammer broken car, just broken
Process is sprayed water while broken, just breaks particle diameter in 30cm or so, the complete blackening in titanium slag surface, surface temperature≤200 DEG C after thick broken
When, watered 10min every 0.5h, until bottom surface without obvious ponding and titanium slag surface temperature stabilization within 120 DEG C, after cooling 7h
Thin broken is ready for, is now sampled, numbered：Sample 2.Chemical examination obtains the Ti of sample 22O3Content is 18.05%, compared with sample 1
Its Ti2O3It is basicly stable.
C, titanium slag thin broken
Treat titanium slag central temperature≤100 DEG C, when detection temperature is 68 DEG C, thin broken to be carried out to titanium slag, Powdered Titanium is taken after thin broken
Slag, numbering：Sample 3.Chemical examination obtains the Ti of sample 32O3Content is 17.69%, its Ti compared with sample 1,22O3It is basicly stable,
The purpose of stable low price Ti content is reached.
Comparative example prepares titanium slag using prior art
Titanium slag to producing carries out cooling and crushes, and concrete operations are as follows：
A, surface sprinkling cooling
1668 DEG C of titanium slag tapping temperature, amount of slag 68t is loaded using slag basin, and water-cooled is sampled when coming out of the stove to ensure its Ti2O3Contain
Amount accuracy, numbering：Sample 1.Chemical examination obtains the Ti of sample 12O3Content is 19.61%.Slag tap and slag basin is transported to cooling after finishing
Region, using 1 water pipe side water-spraying control, water spraying time 3.5h, injection flow rate 8t/h.Water spray terminates rear titanium slag surface temperature
256 DEG C, about 30min slag basin moisture evaporations are finished, now 308 DEG C of titanium slag surface temperature.
Cooling is broken at the beginning of b, titanium slag
Titanium slag after water-spraying control is transported to just broken place, a bulk blob of slag is carried out just to break using hydraulic hammer broken car, just broken
During do not spray water, just break particle diameter in 30cm or so.Natural cooling after the completion of just broken, measures its temperature for 800 DEG C or so, afterwards
Watered 5min every 60min.Thin broken is ready for after cooling 6h, is now sampled, numbered：Sample 2.Chemical examination obtains sample 2
Ti2O3Content is 15.05%, its Ti compared with sample 12O3Decline more.
C, titanium slag thin broken
It is 128 DEG C that clinker central temperature is measured during thin broken, and powdery titanium slag is taken after thin broken, is numbered：Sample 3.Chemical examination obtains sample
The Ti of product 32O3Content is 13.89%, its Ti compared with sample 1,22O3Reduce more.
Titanium slag middle or low price titanium Ti after embodiment and comparative example thin broken is detected using titanium trichloride titration2O3Content, obtains
Result as shown in table 1 below：
| Ti2O3The weight that content accounts for titanium slag total amount compares % | |
| Embodiment 1 | 18.26 |
| Embodiment 2 | 18.79 |
| Embodiment 3 | 17.69 |
| Comparative example | 13.89 |
From embodiment and comparative example, the titanium slag for producing is cooled down and crushed using the inventive method, can guarantee that
The quality of titanium slag finished product, titanium slag finished product middle or low price Ti content improves 4.35%, and content is highly stable, is that titanium slag production field is carried
A kind of method for maintaining titanium slag middle or low price Ti content stabilization is supplied.
Claims (9)
1. the method for keeping titanium slag middle or low price Ti content stabilization, it is characterised in that comprise the following steps：
A, the cooling of titanium slag surface sprinkling
After titanium slag is come out of the stove, uniform water-spraying control treatment is carried out to titanium slag surface in cooled region, injection flow rate is every t titanium slags water spray
0.5~2t, water spraying time is 2~6h, after water spray terminates 20~30min, detects titanium slag surface temperature, makes temperature≤200 DEG C；
Cooling is broken at the beginning of b, titanium slag
Just tear reason is carried out to step a gained titanium slags, the thick edge damage in side to the titanium slag surface sprinkling that breaks, be cooled to surface temperature≤
200 DEG C, then it is interrupted water spray；
C, the cooling of titanium slag thin broken
Processed to the granularity for needing after thin broken behind titanium slag central temperature≤100 DEG C, is carried out to titanium slag.
2. the method that holding titanium slag middle or low price Ti content according to claim 1 is stablized, it is characterised in that：Institute in step a
State in cooled region by the way of top spray.
3. the method that holding titanium slag middle or low price Ti content according to claim 1 and 2 is stablized, it is characterised in that：In step a
The uniform water spray is by the way of multi-pipeline is sprayed water side by side or multiple spot spraying head type is sprayed water.
4. the stable method of titanium slag middle or low price Ti content is kept according to any one of claims 1 to 3, it is characterised in that：
It is thick broken using large hydraulic hammer described in step b.
5. the stable method of titanium slag middle or low price Ti content is kept according to any one of Claims 1 to 4, it is characterised in that：
Thick broken particle diameter is 20~50cm described in step b.
6. the stable method of titanium slag middle or low price Ti content is kept according to any one of Claims 1 to 5, it is characterised in that：
Slightly the broken time is 4~8h described in step b.
7. the stable method of titanium slag middle or low price Ti content is kept according to any one of claim 1~6, it is characterised in that：
Titanium slag surface sprinkling is uniformly sprayed water using water pipe described in step b, and titanium slag injection flow rate per ton is 0.5~2 ton.
8. the stable method of titanium slag middle or low price Ti content is kept according to any one of claim 1~7, it is characterised in that：
It refers to 5~10min of water spray to be interrupted water spray described in step b, stops 20~40min, and water spray stopped process is alternately.
9. the stable method of titanium slag middle or low price Ti content is kept according to any one of claim 1~8, it is characterised in that：
Using the one kind in jaw crusher, ball mill or hammer-crusher during thin broken described in step c.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| WO2013100963A1 (en) * | 2011-12-28 | 2013-07-04 | Zhigang Zak Fang | Production of titanium dioxide pigments |
| 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 |
| CN106011491A (en) * | 2016-06-12 | 2016-10-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for improving cooling efficiency of titanium slag |
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| JPS60259625A (en) * | 1984-06-01 | 1985-12-21 | Natl Inst For Res In Inorg Mater | Production of titania fiber |
| WO2013100963A1 (en) * | 2011-12-28 | 2013-07-04 | Zhigang Zak Fang | Production of titanium dioxide pigments |
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| 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 |
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