CN106745224B - The method for keeping titanium slag middle or low price Ti content to stablize - Google Patents
The method for keeping titanium slag middle or low price Ti content to stablize Download PDFInfo
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- CN106745224B CN106745224B CN201710213053.5A CN201710213053A CN106745224B CN 106745224 B CN106745224 B CN 106745224B CN 201710213053 A CN201710213053 A CN 201710213053A CN 106745224 B CN106745224 B CN 106745224B
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- C01—INORGANIC CHEMISTRY
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- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
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Abstract
The invention belongs to titanium slag technical field of smelting, and in particular to a method of keep titanium slag middle or low price Ti content to stablize.It is relatively low for the titanium slag middle or low price Ti content of prior art production, and content it is unstable the problems such as, the present invention provides a kind of method that holding titanium slag middle or low price Ti content is stablized, cooling is slightly broken including titanium slag surface water-spraying control, titanium slag, titanium slag thin broken cools down three steps, the mode and intensity of water spray are controlled in each step respectively, the temperature for controlling titanium slag, to keep Low-valent Titanium stable content.The method of the present invention 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 of less demanding, easy to operate, is suitable for most of titanium slag smelting enterprises and carries 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 for keeping titanium slag middle or low price Ti content to stablize
Method.
Background technology
Quo of domestic titanium slag smelting industry is started late, and various aspects supporting technology is not perfect, for a long time titanium slag production stability
Difference, product index fluctuation are larger.The enterprise using acid-dissolved titanium slag production titanium dioxide domestic at present it is still most of using ilmenite concentrate,
The method that titanium slag is used in mixed way, user generally reflect low price Ti content it is unstable be the key that influence its titanium dioxide quality stability
Factor, to produce the titanium dioxide of good quality, the low price titanium dioxide (Ti in raw materials for production titanium slag2O3) content need stablize 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 to while 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.
Invention content
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
Stable problem.
The present invention solve technical problem technical solution be：A kind of side that holding titanium slag middle or low price Ti content is stablized is provided
Method.This approach includes the following steps：
A, titanium slag surface water-spraying control
After titanium slag is come out of the stove, uniform water-spraying control processing is carried out to titanium slag surface in cooled region, water spray is per t titanium slag sprays
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；
B, titanium slag just broken cooling
Just tear reason is carried out to titanium slag obtained by step a, the thick edge damage in side sprays water to the titanium slag surface broken, is cooled to surface temperature
≤ 200 DEG C of degree, then it is interrupted water spray；
C, titanium slag thin broken cools down
Behind titanium slag central temperature≤100 DEG C, thin broken is carried out to titanium slag and is handled to the granularity of needs.
Wherein, in the method that above-mentioned holding titanium slag middle or low price Ti content is stablized, titanium slag group described in step a becomes：By weight
Measure percentages, TiO270~80%, FeO 4%~15%, surplus are impurity.
Wherein, in the method that above-mentioned holding titanium slag middle or low price Ti content is stablized, cooled region described in step a uses top spray
Mode.
Wherein, in the method that above-mentioned holding titanium slag middle or low price Ti content is stablized, uniformly 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 that above-mentioned holding titanium slag middle or low price Ti content is stablized, just broken described in step a refers to broken for the first time
Broken, the thin broken refers to further broken.
Wherein, it is slightly broken in the method that above-mentioned holding titanium slag middle or low price Ti content is stablized, described in step b and uses large hydraulic
Hammer.
Wherein, in the method that above-mentioned holding titanium slag middle or low price Ti content is stablized, grain size slightly broken described in step b is 20~
50cm。
Wherein, it is 4~8h that the time is slightly broken in the method that above-mentioned holding titanium slag middle or low price Ti content is stablized, described in step b.
Wherein, in the method that above-mentioned holding titanium slag middle or low price Ti content is stablized, the water spray of titanium slag surface described in step b uses
Water pipe is uniformly sprayed water, and titanium slag water spray per ton is 0.5~2 ton.
Wherein, in the method that above-mentioned holding titanium slag middle or low price Ti content is stablized, interruption water spray described in step b refers to water spray
5~10min stops 20-40min, and water spray stopped process is alternately.
Wherein, broken using jaw when thin broken described in step c in the method that above-mentioned holding titanium slag middle or low price Ti content is stablized
One kind in broken machine, ball mill or hammer-crusher.
Beneficial effects of the present invention are：The present invention carries out temperature stage control by the shattering process after coming out of the stove to titanium slag,
Water spray means and pattern are adjusted, by controlling the cooling technique of titanium slag, reduces the oxidative phenomena of cooling procedure middle or low price titanium, in fact
Now to the stability contorting for titanium slag low price Ti content of coming out of the stove.This 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 of less demanding, easy to operate, is suitable for most of titanium slags
Smelting enterprise carries out Low-valent Titanium control.
Specific implementation mode
The present invention provides a kind of methods that holding titanium slag middle or low price Ti content is stablized.This approach includes the following steps：
A, surface water-spraying control
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 builds and ensures water spray uniformity and cooling in such a way that multi-pipeline is sprayed water side by side or multiple spot spraying head type is sprayed water for top spray pattern
Intensity, water spraying time control use 0.5~2t water in titanium slag per ton, stop titanium slag surface after water spray in 2~6h, water spray control
Temperature≤200 DEG C；
B, titanium slag just broken cooling
After surface cools down, breaks machine or cutting machine using large hydraulic hammer or large-scale Hubei Province and carry out just broken, side to clinker
Thick edge damage sprays water to the titanium slag surface broken, is cooled to surface temperature≤200 DEG C, then be interrupted water spray；
C, titanium slag thin broken
Titanium slag needs to ensure that its central temperature≤100 DEG C, thin broken are broken using jaw crusher, ball mill or hammer before starting thin broken
One kind in machine, particle size after cracking is depending on product requirement.
The present invention strictly controls each cooling breakage parameter by the cooling crushing stage in titanium slag production process, regulation and control
Titanium slag middle or low price Ti content makes Low-valent Titanium be not easy to be aoxidized, and keeps the stabilization of titanium slag middle or low price Ti content.
On surface when water-spraying control, the present invention using multi-pipeline side by side water spray or multiple spot spraying head type water spray by the way of, to
It ensure that the uniformity of water spray, the speed of titanium slag each section cooling are unanimous on the whole, it is not easy to not aoxidize, and be sprayed when surface is sprayed water
To titanium slag surface temperature≤200 DEG C, the oxidation on titanium slag surface is avoided, ensure that low price Ti content.
Meanwhile the present invention when breaking cooling at the beginning of titanium slag by the way of cool down when being crushed, just broken titanium slag is i.e. fast
Speed, which is cooled to, is crushed to 200 DEG C hereinafter, shattering process is avoided to aoxidize.The mode that interruption is sprayed water is taken to ensure that cooling is strong again later
It avoids ponding excessive under the premise of degree, causes following process difficult, influence product moisture.The grain size of titanium slag after the present invention will slightly be broken
Control be 20~50cm, avoid grain size it is excessive cause follow-up cooling time it is long, increase following process difficulty, also avoid grain
It is excessive with oxygen contact area when diameter is too small, to accelerate the oxidation of Low-valent Titanium, further maintained by the control of grain size
The temperature of titanium slag middle or low price Ti content.
Explanation is further explained to the specific implementation mode of the present invention below by embodiment, but does not indicate that and sends out this
Bright protection domain is limited in range described in embodiment.
Embodiment 1 prepares titanium slag with technical solution of the present invention
Cooling is carried out to the titanium slag of production to be crushed, concrete operations are as follows：
A, surface water-spraying control
1668 DEG C, amount of slag 70t of titanium slag tapping temperature is loaded using slag basin, and water cooling is sampled when coming out of the stove to ensure its Ti2O3
Content accuracy, number：Sample 1.Chemical examination obtains the Ti of sample 12O3Content is 19.37%.Slag basin is transported to after slagging tap cold
But region, the uniform water-spraying control by the way of 3 water pipes side by side top spray, water spraying time 4h, water spray 12t/h.Water spray terminates
167 DEG C of titanium slag surface temperature afterwards, about 20min slag basin moisture evaporations finish, at this time 189 DEG C of titanium slag surface temperature.
B, titanium slag just broken cooling
Titanium slag after water-spraying control is transported to just broken place, being crushed vehicle using hydraulic hammer to a bulk blob of slag just break, just broken
Process is sprayed water while broken, and just broken grain size is between 20~50cm, the complete blackening in titanium slag surface after thick break, and surface temperature≤
At 200 DEG C, water 10min every 0.5h, it is cold until bottom surface is stablized without apparent ponding and titanium slag surface temperature within 150 DEG C
But it is ready for thin broken after 5h, samples at this time, numbers：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
It waits for titanium slag central temperature≤100 DEG C, when detection temperature is 76 DEG C, thin broken is carried out to titanium slag, Powdered Titanium is taken after thin broken
Slag, number：Sample 3.Chemical examination obtains the Ti of sample 32O3Content is 18.26%, its Ti compared with sample 1,22O3It is basicly stable,
Stable low price Ti content is achieved the purpose that.
Embodiment 2 prepares titanium slag with technical solution of the present invention
Cooling is carried out to the titanium slag of production to be crushed, concrete operations are as follows：
A, surface water-spraying control
1682 DEG C of titanium slag tapping temperature, amount of slag 72t are loaded using slag basin, and water cooling is sampled when coming out of the stove to ensure its Ti2O3Contain
Measure accuracy, number：Sample 1.Chemical examination obtains the Ti of sample 12O3Content is 20.27%.Slag basin is transported to cooling after slagging tap
Region, the uniform water-spraying control by the way of 3 water pipes side by side top spray, water spraying time 3.5h, water spray 15t/h.Water spray terminates
172 DEG C of titanium slag surface temperature afterwards, about 30min slag basin moisture evaporations finish, at this time 185 DEG C of titanium slag surface temperature.
B, titanium slag just broken cooling
Titanium slag after water-spraying control is transported to just broken place, being crushed vehicle using hydraulic hammer to a bulk blob of slag just break, just broken
Process is sprayed water while broken, and just broken grain size is in 30cm or so, the complete blackening in titanium slag surface after thick break, surface temperature≤200 DEG C
When, every 40min water spray 10min, until bottom surface is without apparent ponding and titanium slag surface temperature stabilization is within 150 DEG C, cooling
It is ready for thin broken after 6.5h, samples at this time, numbers：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
It waits for titanium slag central temperature≤100 DEG C, when detection temperature is 62 DEG C, thin broken is carried out to titanium slag, Powdered Titanium is taken after thin broken
Slag, number：Sample 3.Chemical examination obtains the Ti of sample 32O3Content is 18.79%, its Ti compared with sample 1,22O3It is basicly stable,
Stable low price Ti content is achieved the purpose that.
Embodiment 3 prepares titanium slag with technical solution of the present invention
Cooling is carried out to the titanium slag of production to be crushed, concrete operations are as follows：
A, surface water-spraying control
1668 DEG C of titanium slag tapping temperature, amount of slag 78t are loaded using slag basin, and water cooling is sampled when coming out of the stove to ensure its Ti2O3Contain
Measure accuracy, number：Sample 1.Chemical examination obtains the Ti of sample 12O3Content is 18.34%.Slag basin is transported to cooling after slagging tap
Region, the uniform water-spraying control by the way of 3 water pipes side by side top spray, water spraying time 5h, water spray 13t/h.After water spray
158 DEG C of titanium slag surface temperature, about 30min slag basin moisture evaporations finish, at this time 178 DEG C of titanium slag surface temperature.
B, titanium slag just broken cooling
Titanium slag after water-spraying control is transported to just broken place, being crushed vehicle using hydraulic hammer to a bulk blob of slag just break, just broken
Process is sprayed water while broken, and just broken grain size is in 30cm or so, the complete blackening in titanium slag surface after thick break, surface temperature≤200 DEG C
When, it waters 10min every 0.5h, until bottom surface is stablized without apparent ponding and titanium slag surface temperature within 120 DEG C, after cooling 7h
It is ready for thin broken, is sampled at this time, is 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
It waits for titanium slag central temperature≤100 DEG C, when detection temperature is 68 DEG C, thin broken is carried out to titanium slag, Powdered Titanium is taken after thin broken
Slag, number：Sample 3.Chemical examination obtains the Ti of sample 32O3Content is 17.69%, its Ti compared with sample 1,22O3It is basicly stable,
Stable low price Ti content is achieved the purpose that.
Comparative example uses prior art preparation titanium slag
Cooling is carried out to the titanium slag of production to be crushed, concrete operations are as follows：
A, surface water-spraying control
1668 DEG C of titanium slag tapping temperature, amount of slag 68t are loaded using slag basin, and water cooling is sampled when coming out of the stove to ensure its Ti2O3Contain
Measure accuracy, number：Sample 1.Chemical examination obtains the Ti of sample 12O3Content is 19.61%.Slag basin is transported to cooling after slagging tap
Region, using 1 water pipe side water-spraying control, water spraying time 3.5h, water spray 8t/h.Titanium slag surface temperature after water spray
256 DEG C, about 30min slag basin moisture evaporations finish, at this time 308 DEG C of titanium slag surface temperature.
B, titanium slag just broken cooling
Titanium slag after water-spraying control is transported to just broken place, being crushed vehicle using hydraulic hammer to a bulk blob of slag just break, just broken
It does not spray water in the process, just broken grain size is in 30cm or so.Natural cooling after the completion of just broken, it is 800 DEG C or so to measure its temperature, later
Every 60min waterings 5min.It is ready for thin broken after cooling 6h, is sampled at this time, is 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 when 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 1,22O3It reduces more.
The 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：
| Ti2O3Content accounts for the weight ratio % of titanium slag total amount | |
| Embodiment 1 | 18.26 |
| Embodiment 2 | 18.79 |
| Embodiment 3 | 17.69 |
| Comparative example | 13.89 |
By embodiment and comparative example it is found that being carried out to the titanium slag of production using the method for the present invention cooling and broken, can guarantee
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 carried for titanium slag production field
A kind of method that maintenance titanium slag middle or low price Ti content is stablized is supplied.
Claims (34)
1. the method for keeping titanium slag middle or low price Ti content to stablize, which is characterized in that include the following steps：
A, titanium slag surface water-spraying control
After titanium slag is come out of the stove, uniform water-spraying control processing is carried out to titanium slag surface in cooled region, water spray is per t titanium slag water sprays
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；
B, titanium slag just broken cooling
Just tear reason is carried out to titanium slag obtained by step a, the thick edge damage in side sprays water to the titanium slag surface broken, be cooled to surface temperature≤
200 DEG C, then it is interrupted water spray；The grain size slightly broken is 20~50cm；
C, titanium slag thin broken cools down
Behind titanium slag central temperature≤100 DEG C, thin broken is carried out to titanium slag and is handled to the granularity of needs.
2. the method according to claim 1 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step a
It states in cooled region by the way of top spray.
3. the method according to claim 1 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step a
It states and uniformly sprays water in such a way that multi-pipeline is sprayed water side by side or multiple spot spraying head type is sprayed water.
4. the method according to claim 2 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step a
It states and uniformly sprays water in such a way that multi-pipeline is sprayed water side by side or multiple spot spraying head type is sprayed water.
5. the method according to claim 1 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states thick broken using large hydraulic hammer.
6. the method according to claim 2 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states thick broken using large hydraulic hammer.
7. the method according to claim 3 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states thick broken using large hydraulic hammer.
8. the method according to claim 4 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states thick broken using large hydraulic hammer.
9. the method according to claim 1 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It is 4~8h to state the slightly broken time.
10. the method according to claim 2 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It is 4~8h to state the slightly broken time.
11. the method according to claim 3 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It is 4~8h to state the slightly broken time.
12. the method according to claim 4 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It is 4~8h to state the slightly broken time.
13. the method according to claim 5 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It is 4~8h to state the slightly broken time.
14. the method according to claim 6 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It is 4~8h to state the slightly broken time.
15. the method according to claim 7 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It is 4~8h to state the slightly broken time.
16. the method according to claim 8 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It is 4~8h to state the slightly broken time.
17. the method according to claim 1 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states titanium slag surface water spray uniformly to spray water using water pipe, titanium slag water spray per ton is 0.5~2 ton.
18. the method according to claim 2 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states titanium slag surface water spray uniformly to spray water using water pipe, titanium slag water spray per ton is 0.5~2 ton.
19. the method according to claim 3 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states titanium slag surface water spray uniformly to spray water using water pipe, titanium slag water spray per ton is 0.5~2 ton.
20. the method according to claim 4 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states titanium slag surface water spray uniformly to spray water using water pipe, titanium slag water spray per ton is 0.5~2 ton.
21. the method according to claim 5 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states titanium slag surface water spray uniformly to spray water using water pipe, titanium slag water spray per ton is 0.5~2 ton.
22. the method according to claim 6 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states titanium slag surface water spray uniformly to spray water using water pipe, titanium slag water spray per ton is 0.5~2 ton.
23. the method according to claim 7 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states titanium slag surface water spray uniformly to spray water using water pipe, titanium slag water spray per ton is 0.5~2 ton.
24. the method according to claim 8 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states titanium slag surface water spray uniformly to spray water using water pipe, titanium slag water spray per ton is 0.5~2 ton.
25. the method according to claim 9 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：Institute in step b
It states titanium slag surface water spray uniformly to spray water using water pipe, titanium slag water spray per ton is 0.5~2 ton.
26. the method according to claim 10 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：In step b
The titanium slag surface water spray is uniformly sprayed water using water pipe, and titanium slag water spray per ton is 0.5~2 ton.
27. the method according to claim 11 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：In step b
The titanium slag surface water spray is uniformly sprayed water using water pipe, and titanium slag water spray per ton is 0.5~2 ton.
28. the method according to claim 12 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：In step b
The titanium slag surface water spray is uniformly sprayed water using water pipe, and titanium slag water spray per ton is 0.5~2 ton.
29. the method according to claim 13 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：In step b
The titanium slag surface water spray is uniformly sprayed water using water pipe, and titanium slag water spray per ton is 0.5~2 ton.
30. the method according to claim 14 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：In step b
The titanium slag surface water spray is uniformly sprayed water using water pipe, and titanium slag water spray per ton is 0.5~2 ton.
31. the method according to claim 15 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：In step b
The titanium slag surface water spray is uniformly sprayed water using water pipe, and titanium slag water spray per ton is 0.5~2 ton.
32. the method according to claim 16 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：In step b
The titanium slag surface water spray is uniformly sprayed water using water pipe, and titanium slag water spray per ton is 0.5~2 ton.
33. keeping the method that titanium slag middle or low price Ti content is stablized, feature to exist according to claim of right1~32 any one of them
In：Interruption water spray described in step b refers to 5~10min of water spray, stops 20~40min, water spray stopped process is alternately.
34. the method according to claim 33 for keeping titanium slag middle or low price Ti content to stablize, it is characterised in that：In step c
Using one kind in jaw crusher, ball mill or hammer-crusher when the thin broken.
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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 |
| 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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