CN106904845A - The production method of the special titanium slag of sulfate process titanium dioxide - Google Patents
The production method of the special titanium slag of sulfate process titanium dioxide Download PDFInfo
- Publication number
- CN106904845A CN106904845A CN201710211984.1A CN201710211984A CN106904845A CN 106904845 A CN106904845 A CN 106904845A CN 201710211984 A CN201710211984 A CN 201710211984A CN 106904845 A CN106904845 A CN 106904845A
- Authority
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- China
- Prior art keywords
- titanium slag
- slag
- titanium
- special
- titanium dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002893 slag Substances 0.000 title claims abstract description 140
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 123
- 239000010936 titanium Substances 0.000 title claims abstract description 123
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 50
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000000498 ball milling Methods 0.000 claims abstract description 29
- 238000000967 suction filtration Methods 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 11
- 238000012216 screening Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000001238 wet grinding Methods 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000003723 Smelting Methods 0.000 abstract description 3
- 235000010215 titanium dioxide Nutrition 0.000 description 35
- 238000005507 spraying Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010018910 Haemolysis Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008588 hemolysis Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
- C01G23/0532—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts
Abstract
The invention belongs to titanium slag technical field of smelting, and in particular to a kind of production method of the special titanium slag of sulfate process titanium dioxide.Titanium slag for prior art production needs the broken problem processed and could use, the present invention to provide a kind of production method of the special titanium slag of sulfate process titanium dioxide, comprise the following steps when titanium dioxide is prepared：A, after titanium slag slag notch is sprayed water to titanium slag of coming out of the stove, be transferred to ball mill；B, 20~40min of ball milling in ball mill, make titanium slag particle diameter be 325 mesh sieve screenings >=80%；C, the titanium slag after ball milling is carried out into suction filtration, titanium slag moisture is 10~15wt% after making suction filtration；D, by after suction filtration titanium slag drying obtain the special titanium slag of sulfate process titanium dioxide.Effectively be connected the processes such as titanium slag cooling, ball milling, suction filtration, drying by the present invention, simplifies technological process, and resulting product can be directly used for titanium dioxide acidolysis, without follow-up broken mill, has saved production cost.
Description
Technical field
The invention belongs to titanium slag technical field of smelting, and in particular to a kind of production method of the special titanium slag of sulfate process titanium dioxide.
Background technology
The titanium slag of electric furnace smelting come out of the stove it is latter as the processing method that uses for：(1) after titanium slag is come out of the stove using slag basin or
Slag ladle is hinged with, and its size is relevant with site condition；(2) slag basin or slag ladle carry out chilling by way of water-spraying control, general cold
But 3~6 hours；(3) slag basin or slag ladle are transported to other places continuation water-spraying control, and its cool time is different according to field condition
And there is notable difference；(4) bulk titanium slag is by the just broken fritter titanium slag for obtaining that the broken machine in Hubei Province can be entered；(5) fritter titanium slag leads to
Cross further to crush and obtain finished product titanium slag；(6) granularity of finished product titanium slag is usually+100 mesh >=80%, is carried out in titanium dioxide enterprise
Using when need to break again after mill is processed and could produce titanium dioxide.The particle size range that production titanium dioxide needs need to be such as crushed to, then
Increase equipment is needed, high cost, yield are low.
The present invention intends providing a kind of production method that need not again carry out the special titanium slag of broken sulfate process titanium dioxide.
The content of the invention
The technical problem to be solved in the present invention is：The titanium slag of prior art production needs broken processing when titanium dioxide is prepared
The problem that could be used.
The present invention solve technical problem technical scheme be：A kind of production method of the special titanium slag of sulfate process titanium dioxide is provided.
The method is comprised the following steps：
A, the punching of water distribution water
Titanium slag of coming out of the stove is sprayed water with high pressure in titanium slag slag notch, injection flow rate is every 100t titanium slags water spray 60-100t, water spray
20~30min, is transferred to ball mill；
B, ball milling
20~40min of ball milling in ball mill, makes titanium slag particle diameter be 325 mesh sieve screenings >=80%；
C, suction filtration
Titanium slag after ball milling is carried out into suction filtration, titanium slag moisture is 10~15wt% after making suction filtration；
D, drying
By the titanium slag drying after suction filtration, the special titanium slag of sulfate process titanium dioxide is obtained.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, the composition of titanium slag described in step a is：By weight
Percentages, TiO270~80%, FeO 4~15%, balance of impurity.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, the high pressure described in step a refers to that hydraulic pressure is
300~400kPa.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, described in step a spray water current direction and titanium
Slag falling direction is vertical.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, ball milling described in step b be wet-milling, titanium slag with
The weight ratio of water is 100：40~60.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, steel ball conduct is added described in step b during ball milling
Ball-milling medium.
Further, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, the composition of the steel ball is：Diameter 80mm
Weight ratio be 60~80%, the weight ratio of diameter 50mm is 10~20%, and the weight ratio of diameter 30mm is 10~20%.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, the ball-milling medium volume added described in step b
Account for the 40~60% of ball mill volume.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, 400-600 is used described in step c during suction filtration
Purpose filter cloth.
Wherein, the vacuum is controlled to be in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, described in step c during suction filtration
50~80kPa.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, drying temperature described in step d is 250~350
DEG C, drying time is 30~60min.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, drying plant described in step d is rotary kiln.
Wherein, in the production method of the special titanium slag of above-mentioned sulfate process titanium dioxide, the special titanium slag of sulfate process titanium dioxide described in step d
Constitute and be：By weight percentage, TiO270~80%, FeO 4~15%, balance of impurity.
Beneficial effects of the present invention are：The present invention changes existing titanium slag cooling crumbling method, is cooled down by controlling titanium slag
When injection flow rate and hydraulic pressure so as to control titanium slag cool down when granularity；Titanium slag directly docks ball milling after water spray, shortens brokenly grinder
Skill flow, has saved water mill cost；Obtain can be directly used for the fine fraction titanium slag raw material of Producing Titanium Dioxide by suction filtration, drying again.
Compared with original technology, effectively be connected the processes such as titanium slag cooling, ball milling, suction filtration, drying by this technology, simplifies technological process,
Resulting product can be directly used for titanium dioxide acidolysis, without follow-up broken mill, save production cost.
Specific embodiment
The present invention provides a kind of production method of the special titanium slag of sulfate process titanium dioxide, comprises the following steps：
A, titanium slag of coming out of the stove is sprayed water with high pressure in titanium slag slag notch, injection flow rate is every 100t titanium slags water spray 60-100t, spray
20~30min of water, carries out tentatively disperseing and cooling down to titanium slag, is transferred to ball mill；The titanium slag is constituted：By weight percentage
Meter, TiO270~80%, FeO 4~15%, balance of impurity；
B, titanium slag and the water weight ratio ensured in ball mill are 100 ︰ 40~60, addition volume account for ball mill volume 40~
Used as ball-milling medium, the weight ratio of diameter 80mm is 60~80%, the weight ratio of diameter 50mm to 60% steel ball in the steel ball
It is 10~20%, the weight ratio of diameter 30mm is 10~20%, 20~40min of ball milling in ball mill, makes titanium slag particle diameter be 325
Mesh screenings >=80%；
C, the titanium slag after ball milling is carried out into suction filtration, 400~600 mesh filter clothes are used during suction filtration, titanium slag moisture contains after making suction filtration
It is 10~15wt% to measure；
D, the titanium slag after suction filtration is dried in rotary kiln, drying temperature is 250~350 DEG C, and drying time is 30
~60min, obtains the special titanium slag of sulfate process titanium dioxide.
The present invention is first directly tentatively refined slag discharging by spraying water with high pressure, and is saved titanium slag cool time, is simplified just broken
Technique, the water (flow) direction of water spray vertically, can quickly cool down titanium slag for titanium slag falling direction, cost-effective.To the titanium slag after water spray
Direct docking ball mill carries out wet-milling and crushes, and has been saved compared to simple wet-grinding technology and relative device and has used water, simplifies flow, and granularity can after wet-milling
The acid hemolysis process of titanium white production is directly used in, without breaking mill again.The present invention is special by the water-cooled characteristic of titanium slag, wet-grinding technology and relative device
Property, titanium white production technique carried out it is effective linking coordinate, in water spray, wet-milling then pass through spraying hydraulic pressure and the tune of time
The means adjustment such as section and the suitable wet grinding media of selection, wet-milling time, control grain slag ratio, by size controlling in sulfuric acid process
The particle size range of Producing Titanium Dioxide titanium slag, without breaking mill again, for sulfate process titanium dioxide production provides a kind of special titanium slag.
Explanation is further explained to specific embodiment of the invention below in conjunction with embodiment, but is not indicated that this
The protection domain of invention is limited in scope described in embodiment.
Embodiment 1 produces the special titanium slag of sulfate process titanium dioxide with technical solution of the present invention
Titanium slag amount of coming out of the stove about 70t, water spray 20min, injection flow rate about 35t are carried out using 3kg hydraulic pressure.Thus obtain preliminary thin
The titanium slag particle of change.Water spraying direction docks optical port collector and conveyance conduit, and the titanium slag particle after current and refinement is directly entered
Ball mill titanium slags are about 100 with water weight ratio：50, add volume to account for the steel ball of ball mill volume 55% as ball-milling medium, steel
The weight ratio of diameter 80mm is 65% in ball, and the weight ratio of diameter 50mm is 15%, and the weight ratio of diameter 30mm is 20%, in ball
Ball milling 35min in grinding machine.The titanium slag after fine grinding is obtained, its granularity accounts for 87.1% for 325 mesh screenings.
By the titanium slag after ball milling by 600 mesh filter cloth suction filterings, titanium slag moisture is 11.3wt% after suction filtration.
Titanium slag after suction filtration is dried in rotary kiln, drying temperature is 320 DEG C, and drying time is 40min, is obtained
The special titanium slag of sulfate process titanium dioxide, can be used for acidolysis directly or by simple process.
Embodiment 2 produces the special titanium slag of sulfate process titanium dioxide with technical solution of the present invention
Titanium slag amount of coming out of the stove about 80t, water spray 30min, injection flow rate about 50t are carried out using 4kg hydraulic pressure.Thus obtain preliminary thin
The titanium slag particle of change.Water spraying direction docks optical port collector and conveyance conduit, and the titanium slag particle after current and refinement is directly entered
Ball mill titanium slags are about 100 with water weight ratio：60, add volume to account for the steel ball of ball mill volume 45% as ball-milling medium, steel
The weight ratio of diameter 80mm is 60% in ball, and the weight ratio of diameter 50mm is 20%, and the weight ratio of diameter 30mm is 20%, in ball
Ball milling 40min in grinding machine.The titanium slag after fine grinding is obtained, its granularity accounts for 90.3% for 325 mesh screenings.
By the titanium slag after ball milling by 600 mesh filter cloth suction filterings, titanium slag moisture is 12.8wt% after suction filtration.
Titanium slag after suction filtration is dried in rotary kiln, drying temperature is 280 DEG C, and drying time is 60min, is obtained
The special titanium slag of sulfate process titanium dioxide, can be used for acidolysis directly or by simple process.
Comparative example prior art produces sulfate process titanium dioxide titanium slag
Titanium slag amount of coming out of the stove about 70t, is contained, used time about 20min using 12 slag basins.The slag basin transhipment of titanium slag is will be equipped with afterwards
To cooling place, about 4h is cooled down by the way of surface sprinkling.Then titanium slag in slag basin is hung out using crane, the used time is about
1.5h.The fritter of 20~80cm of diameter is broken for after the titanium slag continuation cooling 6h for hanging out using hydraulic hammer.Fritter titanium slag passes through again
It is titanium slag of 75~850 microns of ratios more than 90% that Hubei Province is broken and particle size range is obtained after machine, hammer-crusher.
Such titanium slag is sold to after titanium dioxide enterprise, it is necessary to be broken again by ball mill and grinds, and can just obtain -325 mesh and contain
Particulate titanium slag of the amount more than 80% is used for acidolysis, and the technological process of production is long, the production cycle is long, relatively costly.
From embodiment and comparative example, the inventive method is effective by titanium slag cooling, ball milling (wet-milling), suction filtration, drying etc.
Linking, simplifies technological process, and resulting product can be directly used for titanium dioxide acidolysis, without follow-up broken mill, has saved production
Cost.
Claims (10)
1. the production method of the special titanium slag of sulfate process titanium dioxide, it is characterised in that comprise the following steps：
A, the punching of water distribution water
Titanium slag of coming out of the stove is sprayed water with high pressure in titanium slag slag notch, injection flow rate is 60~100t of every 100t titanium slags water spray, water spray 20
~30min, is transferred to ball mill；
B, ball milling
20~40min of ball milling in ball mill, makes titanium slag particle diameter be 325 mesh sieve screenings >=80%；
C, suction filtration
Titanium slag after ball milling is carried out into suction filtration, titanium slag moisture is 10~15wt% after making suction filtration；
D, drying
By the titanium slag drying after suction filtration, the special titanium slag of sulfate process titanium dioxide is obtained.
2. the production method of the special titanium slag of sulfate process titanium dioxide according to claim 1, it is characterised in that：Described in step a
High pressure refer to hydraulic pressure be 300~400kPa.
3. the production method of the special titanium slag of sulfate process titanium dioxide according to claim 1, it is characterised in that：Described in step a
The direction of water spray is vertical with titanium slag falling direction.
4. the production method of the special titanium slag of sulfate process titanium dioxide according to claim 1, it is characterised in that：Described in step b
Ball milling is wet-milling, and titanium slag is 100 with the weight ratio of water：40~60.
5. the production method of the special titanium slag of sulfate process titanium dioxide according to claim 1, it is characterised in that：Described in step b
Steel ball is added during ball milling as ball-milling medium.
6. the production method of the special titanium slag of sulfate process titanium dioxide according to claim 5, it is characterised in that：The group of the steel ball
Turn into：The weight ratio of diameter 80mm is 60~80%, and the weight ratio of diameter 50mm is 10~20%, and the weight ratio of diameter 30mm is
10~20%.
7. the production method of the special titanium slag of sulfate process titanium dioxide according to claim 1, it is characterised in that：Described in step b
The ball-milling medium volume of addition accounts for the 40~60% of ball mill volume.
8. the production method of the special titanium slag of sulfate process titanium dioxide according to claim 1, it is characterised in that：Described in step c
Using the filter cloth of 400~600 mesh during suction filtration.
9. the production method of the special titanium slag of sulfate process titanium dioxide according to claim 1, it is characterised in that：Described in step c
It is 50~80kPa that vacuum is controlled during suction filtration.
10. the production method of the special titanium slag of sulfate process titanium dioxide according to claim 1, it is characterised in that：Described in step d
Drying temperature be 250~350 DEG C, drying time be 30~60min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710211984.1A CN106904845A (en) | 2017-04-01 | 2017-04-01 | The production method of the special titanium slag of sulfate process titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710211984.1A CN106904845A (en) | 2017-04-01 | 2017-04-01 | The production method of the special titanium slag of sulfate process titanium dioxide |
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| Publication Number | Publication Date |
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| CN106904845A true CN106904845A (en) | 2017-06-30 |
Family
ID=59193906
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| CN201710211984.1A Pending CN106904845A (en) | 2017-04-01 | 2017-04-01 | The production method of the special titanium slag of sulfate process titanium dioxide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109097600A (en) * | 2018-09-12 | 2018-12-28 | 攀钢集团攀枝花钢铁研究院有限公司 | It is used to prepare the preparation method of the titanium slag of sulfate process titanium dioxide |
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2017
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| CN109097600A (en) * | 2018-09-12 | 2018-12-28 | 攀钢集团攀枝花钢铁研究院有限公司 | It is used to prepare the preparation method of the titanium slag of sulfate process titanium dioxide |
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