CN102050488A - Hydrolysis process - Google Patents

Hydrolysis process Download PDF

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Publication number
CN102050488A
CN102050488A CN 201110003572 CN201110003572A CN102050488A CN 102050488 A CN102050488 A CN 102050488A CN 201110003572 CN201110003572 CN 201110003572 CN 201110003572 A CN201110003572 A CN 201110003572A CN 102050488 A CN102050488 A CN 102050488A
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CN
China
Prior art keywords
hydrolysis
titanium liquid
minutes
hydrolysis process
end water
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CN 201110003572
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Chinese (zh)
Inventor
柯良辉
刘源
翁昌华
刘应黔
淦文军
龚晋
刘正和
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Chongqing Titanium Industry Co Ltd of Pangang Group
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Chongqing Titanium Industry Co Ltd of Pangang Group
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Priority to CN 201110003572 priority Critical patent/CN102050488A/en
Publication of CN102050488A publication Critical patent/CN102050488A/en
Pending legal-status Critical Current

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Abstract

The invention provides a hydrolysis process which comprises the following steps: preheating concentrated titanium liquid and bottom water to a certain temperature; adding the bottom water to a hydrolysis tank, and starting agitation at the same time; continuously unloading the concentrated titanium liquid and adding to the bottom water, and simultaneously generating authigenic seed crystals to prepare crystal nucleuses; after the titanium liquid is unloaded, starting an automatic hydrolysis control system so as to automatically heat a steam valve until a greying point is reached, closing the steam valve automatically, continuously stirring for about 10-30 minutes and then stopping; automatically starting the steam valve after about 10-30 minutes, simultaneously starting the agitation, heating to the second boiling point and then insulating, wherein the stirring is stopped until the hydrolysis finishes; and adding diluted water so as to prepare metatitanic acid. The metatitanic acid particle obtained by the hydrolysis technology is more fine and regular and is even to distribute, and the dispersity of the product as well as color, bright, reducing power and the like of the product in grey slurry are improved.

Description

A kind of hydrolysis process
Technical field
The present invention relates to a kind of hydrolysis process, specifically, relate to a kind of hydrolysis process that utilizes Titanium White Production By Sulfuric Acid Process.
Background technology
The hydrolysis of titanium liquid is that the titanium dioxide component changes the process of solid phase (metatitanic acid) into again from liquid phase (titanium liquid), thereby separates to extract pure titinium dioxide with the soluble impurity of mother liquor.Hydrolysis process is the core of sulfuric acid method titanium pigment production technique, also is one of the harshest operation of whole technology controlling and process.The quality of hydrolysate quality not only influences the normal running of back operation, and directly influences the quality of the finished product.Present domestic hydrolysis automation technolo level is lower, and the quality product fluctuation is bigger.
Industrial have following requirement to hydrolysis process:
(1) percent hydrolysis wants high, i.e. titanium dioxide constitutional changes in the liquid phase are that the percentage of solid phase wants high, and the high more economic benefit of percent hydrolysis is good more under the condition that does not influence final product quality and performance.
(2) hydrolysate must be to have a certain size and uniform particle, and composition is constant, is easy to simultaneously filter and washing.
(3) hydrolysising condition is wanted ripe and is easy to control, and the hydrolysate quality will be stablized, and it is simple that equipment is wanted, and can adapt to industrial needs.
The hydrolysis of titanium liquid is different with the hydrolysis of general salt, and its none fixed pH value is as long as it can hydrolysis and separate out the hydrate deposition of titanium hydroxide under the heating or the condition of diluting.Also hydrolysis reaction can take place if make it keep boiling state the heating of titanium liquid, generate white metatitanic acid precipitation, the promptly industrial sulfuric acid method titanium pigment production technique of producing metatitanic acid.
In the hydrolytic process, particle coacervation not only takes place be called metatitanic acid precipitation and separate out, and the precipitation of before having separated out can dissolve again, separate out to form altered solid phase form again then.The concrete structure more complicated of metatitanic acid, and because of the difference of hydrolysising condition different.
Three kinds of method for hydrolysis are arranged: plus seed pressurizing hydrolysis, plus seed water at atmospheric pressure solution and automatic growing crystal species dilution water solution on the industrial production.
The operating process of automatic growing crystal species dilution water solution is as follows: at first add a certain amount of water in hydrolytic decomposition pot, be preheated to certain temperature when stirring, then dense titanium liquid is added in the hydrolytic decomposition pot, and the volume ratio of control titanium liquid and water is a certain value.Being heated to boiling with open steam is hydrolyzed.
The technical process of automatic growing crystal species dilution water solution is simple, do not need to make in addition the equipment of crystal seed, but control ratio is difficult in seed crystal production process, hydrolysising condition directly influences the quality of hydrolysis prods, and the granularity of final decision finished product and the important indicators such as color and luster in mortar, so the hydrolysis operation must be meticulous, every index must strict control.
In the prior art, because of fearing to influence the stirring means that strainability adopts the slow speed of revolution to stir, make that the performances such as dispersiveness, the color and luster in mortar, brightness, reducing power of size distribution, product of particle after the hydrolysis are unsatisfactory.
Summary of the invention
The object of the present invention is to provide a kind of hydrolysis process, described hydrolysis process comprises the steps: dense titanium liquid and end water preheat to certain temperature; End water is joined in the hydrolytic decomposition pot, start simultaneously and stir; Dense titanium liquid continuous discharge is joined end water, generate automatic growing crystal species simultaneously and produce nucleus; After the discharging of titanium liquid finished, startup hydrolysis automatic control system heated steam valve automatically, and after being heated to change ash point, steam valve cuts out automatically, stirred to stop after continuation moves about 10~30 minutes; Automatically start steam valve at interval after about 10~30 minutes, startup is simultaneously stirred, and is heated to two boiling points, is incubated operation afterwards, wherein is stirred to stop after hydrolysis finishes; Add dilution water, thereby make metatitanic acid.
According to an aspect of the present invention, titanium liquid discharging end post-heating is 35~45 minutes to becoming the grey time of putting.
According to an aspect of the present invention, automatically to start the time that is heated to two boiling points be 30~40 minutes to steam valve.
According to an aspect of the present invention, with dense titanium liquid and end water preheat to 94 ℃ to 97 ℃.
According to an aspect of the present invention, described change ash o'clock is 106 ± 2 ℃.
According to an aspect of the present invention, described two boiling points are 107 ℃ to 110 ℃.
According to an aspect of the present invention, described stirring employing propeller type stirring.
According to an aspect of the present invention, the stir speed (S.S.) of described stirring is 60rpm to 90rpm.
According to an aspect of the present invention, the stir speed (S.S.) of described stirring is 75rpm.
According to an aspect of the present invention, the step that the discharging of dense titanium liquid is joined end water comprise earlier the discharging of dense titanium liquid is joined end water for some time after, after stopping the discharging of dense titanium liquid joined end water for some time, again the discharging of dense titanium liquid is joined the step of end water.
The present invention is by the heating curve in the hydrolysis process that improves Titanium White Production By Sulfuric Acid Process, and in the change prior art because of fearing to influence the stirring means that strainability adopts the slow speed of revolution to stir, and be to use the higher propeller type of rotating speed to stir, make that the size distribution of particle is thinner, more even and more regular after the hydrolysis, and improved performances such as the dispersiveness of product, the color and luster in mortar, brightness, reducing power.And the operating method according to hydrolysis process of the present invention adopts DSC to control has improved hydrolysis automation of operation degree, has reduced artificial factor.And, characteristics of the present invention are to stir in hydrolytic process and will stop for some time, and the technology for hydrolyzing that generally adopts stirs need move until hydrolysis always and finishes, and this helps also making that the size distribution of particle is thinner, more even and more regular after the hydrolysis, and has improved the performance of product.
Description of drawings
By the detailed description of exemplary embodiment being carried out below in conjunction with accompanying drawing, above-mentioned and other purposes of the present invention and characteristics will become apparent, wherein:
Fig. 1 is the hydrolysis grain-size graph that the metatitanic acid that obtains according to the embodiment that improves preceding hydrolysis process is shown;
Fig. 2 is the hydrolysis grain-size graph that the metatitanic acid that the embodiment according to the hydrolysis process after improving obtains is shown;
Fig. 3 illustrates the metatitanic acid that obtains according to the embodiment that improves preceding hydrolysis process to cover grain-size graph through the thunder that thunder covers after grinding;
Fig. 4 illustrates the metatitanic acid that the embodiment according to the hydrolysis process after improving obtains to cover grain-size graph through the thunder that thunder covers after grinding;
Fig. 5 is the finished product grain size figure that the titanium dioxide that obtains according to the embodiment that improves preceding hydrolysis process is shown;
Fig. 6 is the finished product grain size figure that the titanium dioxide that the embodiment according to the hydrolysis process after improving obtains is shown.
Embodiment
Below, describe embodiments of the invention in detail with reference to accompanying drawing.
For the hydrolytic process of Titanium White Production By Sulfuric Acid Process, the hydrolysis process before improving comprises the steps: 60m 3Titanium liquid and 13.2m 3End water all be preheated to 96 ℃; End water is joined in the hydrolytic decomposition pot, start simultaneously and stir (stir and move to the hydrolysis end always); Titanium liquid is added in the end water continuously equably, and blowing was driven steam valve after 4 minutes, generated automatic growing crystal species simultaneously and produced nucleus; Blowing is warmed up to 102 ℃ after finishing, and then heating up with 30 minutes reaches a boiling point (about 107 ℃); Then stopped steam 30 minutes (this process is ageing); Drive steam valve afterwards, reach two boiling points after 35 minutes, temperature is about 109 ℃, is incubated 210 minutes; Add 4m at last 3Process water dilution, make metatitanic acid, make the rutile-type product through subsequent handling.Wherein, stir and adopt the lower alr mode of rotating speed, for example straight tiltedly leaf oar formula stirs, and stirring velocity for example is 8rpm.
After hydrolytic process finishes, can obtain the hydrolysis grain-size graph by particle-size analyzer, same batch materials cover through thunder grind after, record thunder with particle-size analyzer and cover grain-size graph, still can record finished product grain size figure after finally making the rutile product with particle-size analyzer.
Fig. 1 is the hydrolysis grain-size graph that the metatitanic acid that obtains according to the embodiment that improves preceding hydrolysis process is shown.Fig. 3 illustrates the metatitanic acid that obtains according to the embodiment that improves preceding hydrolysis process to cover grain-size graph through the thunder that thunder covers after grinding.Fig. 5 is the finished product grain size figure that the titanium dioxide that obtains according to the embodiment that improves preceding hydrolysis process is shown.
The invention provides a kind of hydrolysis process of Titanium White Production By Sulfuric Acid Process, described hydrolysis process comprises the steps: dense titanium liquid and end water preheat for example can be 94 ℃ to 97 ℃ to certain temperature; End water is joined in the hydrolytic decomposition pot, start simultaneously and stir; Dense titanium liquid continuous discharge is joined in the end water, generate automatic growing crystal species simultaneously and produce nucleus; After the discharging of titanium liquid finishes, start the hydrolysis automatic control system, steam valve is heated automatically, titanium liquid discharging end post-heating can be 35 minutes to 45 minutes to the time that becomes the ash point, and described change was 106 ± 2 ℃ at grey o'clock; After being heated to change ash point, steam valve cuts out automatically, stirs to stop after continuation moves for some time (for example about 10~30 minutes); Automatically start steam valve at interval after about 10~30 minutes, start simultaneously and stir (be stirred to and stop after hydrolysis finishes), be heated to two boiling points, described two boiling points are 107 ℃ to 110 ℃, and the time that is heated to two boiling points can be 30 minutes to 40 minutes; Be incubated operation for some time (for example about 150 minutes~about 250 minutes) afterwards; Add dilution water, thereby make metatitanic acid, make the rutile-type product through subsequent handling.
According to a further aspect in the invention, the step that the discharging of dense titanium liquid is joined in the end water can comprise that elder generation joined the discharging of dense titanium liquid end water for some time (for example about 4 minutes~10 minutes, be preferably about 7 minutes) after, after stopping the discharging of dense titanium liquid is joined for some time in the end water (for example about 3 minutes~5 minutes), again the discharging of dense titanium liquid is joined continuously the step in the end water.
In hydrolysis process of the present invention, opening steam after blowing finishes is after adding for fear of steam, part titanium hydrolysis excessive velocities, and crystalline size increases too fast, causes the size-grade distribution variation, influences its pigment performance; Blowing finishes the back and with saturation steam the mixed solution of titanium liquid and end water is warmed up to 104~108 ℃, impel titanium liquid to reach " turing grey point ", hydrolysis rate by control titanium liquid, guarantee crystal growth slowly and evenly, the particle diameter of crystalline size and character pair the finished product and size-grade distribution have material impact herein; Reach to become and stop steam stops to stir for some time again after for some time purpose behind the ash point earlier and be to stop to stop stirring immediately behind the steam and can cause the temperature of charge skewness; By stirring for some time, it is evenly distributed, also can prolong digestion time, be beneficial to the stable of hydrolytic process.
Hydrolysis process according to the present invention has changed in the prior art because of fearing to influence the stirring means that strainability adopts the slow speed of revolution to stir, and be to use the higher alr mode of rotating speed, for example propeller type stirs, make after the hydrolysis that particle is thinner, more regular, be more evenly distributed, and improved performances such as the dispersiveness of product, the color and luster in mortar, brightness, reducing power.The stir speed (S.S.) of described stirring can preferably, can be 75rpm for about 60rpm to 90rpm.
An embodiment according to the improved hydrolysis process of Titanium White Production By Sulfuric Acid Process of the present invention can comprise the steps: that Jiang Dishui joins in the hydrolytic decomposition pot, starts simultaneously and stirs; With 60m 3Titanium liquid and 13.2m 3End water all be preheated to 96 ℃; Titanium liquid is added in the end water continuously equably, generate automatic growing crystal species simultaneously and produce nucleus; The discharging of titanium liquid is restarted hydrolysis DCS automatic control system after finishing, and steam valve heats automatically, and steam valve cut out automatically when arrival became grey point (temperature is 107 ℃) in 35 minutes; Stop earlier steam separately, stir the continuation operation and stop (steam also stops) after 30 minutes; Automatically start steam valve again after about 30 minutes at interval, start simultaneously and stir (be stirred to and stop after hydrolysis finishes), reach two boiling points after 40 minutes, temperature is 110 ℃, and two boiling points finish back insulation 210 minutes; Add 4m at last 3Process water dilution, make metatitanic acid, make the rutile-type product through subsequent handling.
After hydrolytic process finishes, can obtain the hydrolysis grain-size graph by particle-size analyzer, same batch materials cover through thunder grind after, record thunder with particle-size analyzer and cover grain-size graph, still can record finished product grain size figure after finally making the rutile product with particle-size analyzer.
Fig. 2 is the hydrolysis grain-size graph that the metatitanic acid that the embodiment according to the hydrolysis process after improving obtains is shown.Fig. 4 illustrates the metatitanic acid that the embodiment according to the hydrolysis process after improving obtains to cover grain-size graph through the thunder that thunder covers after grinding.Fig. 6 is the finished product grain size figure that the titanium dioxide that the embodiment according to the hydrolysis process after improving obtains is shown.
By Fig. 1 to Fig. 6 as can be seen, according to particle after the hydrolysis of the hydrolysis process after improving thinner, more regular, be more evenly distributed.
Table one shows according to before improving and dispersiveness, the color and luster in mortar, brightness, the reducing power (data are mean value) of the product that obtains of the embodiment of the hydrolysis process after improving.
Table one
By table one as can be seen, dispersiveness, the color and luster in mortar, brightness, the reducing power according to the product of the hydrolysis process after improving all makes moderate progress.
The present invention is further elaborated below with reference to more comparative example and according to embodiments of the invention, and the following examples only are used to illustrate the present invention, rather than limit the present invention by any way.
Embodiment 1:
With 60m 3Titanium liquid and 13.2m 3End water all be preheated to 94 ℃; End water is joined in the hydrolytic decomposition pot, start simultaneously and stir; Titanium liquid is added in the end water continuously equably, generate automatic growing crystal species simultaneously and produce nucleus; After the discharging of titanium liquid finishes, start hydrolysis DCS automatic control system, steam valve is heated automatically, steam valve cuts out automatically when arriving the grey point of change (temperature is 106 ± 2 ℃) after 35 minutes; Stop earlier steam separately, stir the continuation operation and stop (steam also stops) after 10 minutes, start steam valve at interval after about 10 minutes automatically, start simultaneously and stir (be stirred to and stop after hydrolysis finishes), reach two boiling points after 40 minutes, temperature is 107 ℃, and two boiling points finish back insulation 210 minutes.Add 4m at last 3Process water dilution, make metatitanic acid, make rutile-type product 1 through subsequent handling.
Embodiment 2:
With 60m 3Titanium liquid and 13.2m 3End water all be preheated to 97 ℃; End water is joined in the hydrolytic decomposition pot, start simultaneously and stir; Titanium liquid is added in the end water continuously equably, generate automatic growing crystal species simultaneously and produce nucleus; After the discharging of titanium liquid finishes, start hydrolysis DCS automatic control system, steam valve is heated automatically, steam valve cut out automatically when arrival became grey point (temperature is 106 ± 2 ℃) in 40 minutes; Stop earlier steam separately, stir the continuation operation and stop (steam also stops) after 30 minutes; Automatically start steam valve at interval after about 30 minutes, start simultaneously and stir (be stirred to and stop after hydrolysis finishes), reach two boiling points after 30 minutes, temperature is 110 ℃; Two boiling points finish back insulation 210 minutes; Add 4m at last 3Process water dilution, make metatitanic acid, make rutile-type product 2 through subsequent handling.
Embodiment 3:
With 60m 3Titanium liquid and 13.2m 3End water all be preheated to 96 ℃; End water is joined in the hydrolytic decomposition pot, start simultaneously and stir; Titanium liquid is added in the end water continuously equably, generate automatic growing crystal species simultaneously and produce nucleus; After the discharging of titanium liquid finishes, start hydrolysis DCS automatic control system, steam valve is heated automatically, steam valve cut out automatically when arrival became grey point (temperature is 106 ± 2 ℃) in 45 minutes; Stop earlier steam separately, stir the continuation operation and stop (steam also stops) after 20 minutes; Steam valve starts automatically after about 20 minutes at interval, starts simultaneously to stir (be stirred to and stop after hydrolysis finishes), reaches two boiling points after 35 minutes, and temperature is 109 ℃; Two boiling points finish back insulation 210 minutes; Add 4m at last 3Process water dilution, make metatitanic acid, make rutile-type product 3 through subsequent handling.
The comparative example 1:
With 60m 3Titanium liquid and 13.2m 3End water all be preheated to 92 ℃; End water is joined in the hydrolytic decomposition pot, start simultaneously and stir; Titanium liquid is added in the end water continuously equably, generate automatic growing crystal species simultaneously and produce nucleus; After the discharging of titanium liquid finishes, start hydrolysis DCS automatic control system, steam valve is heated automatically, steam valve cuts out automatically when arriving the grey point of change (temperature is 106 ± 2 ℃) after 50 minutes; Stop earlier steam separately, stir the continuation operation and stop (steam also stops) after 10 minutes, steam valve starts automatically after about 10 minutes at interval, start simultaneously and stir (be stirred to and stop after hydrolysis finishes), reach two boiling points after 45 minutes, temperature is 107 ℃, and two boiling points finish back insulation 210 minutes.Add 4m at last 3Process water dilution, make metatitanic acid, make rutile-type product 4 through subsequent handling.
The comparative example 2:
With 60m 3Titanium liquid and 13.2m 3End water all be preheated to 98 ℃; End water is joined in the hydrolytic decomposition pot, start simultaneously and stir; Titanium liquid is added in the end water continuously equably, generate automatic growing crystal species simultaneously and produce nucleus; After the discharging of titanium liquid finishes, start hydrolysis DCS automatic control system, steam valve is heated automatically, steam valve cut out automatically when arrival became grey point (temperature is 106 ± 2 ℃) in 30 minutes; Stop earlier steam separately, stir the continuation operation and stop (steam also stops) after 30 minutes, steam valve starts automatically after about 30 minutes at interval, starts simultaneously and stirs (stopping after being stirred to the hydrolysis end), reaches two boiling points after 25 minutes, and temperature is 109 ℃; Two boiling points finish back insulation 210 minutes; Add 4m at last 3Process water dilution, make metatitanic acid, make rutile-type product 5 through subsequent handling.
The comparative example 3:
End water is joined in the hydrolytic decomposition pot, start simultaneously and stir; With 60m 3Titanium liquid and 13.2m 3End water all be preheated to 99 ℃; Titanium liquid is added in the end water continuously equably, generate automatic growing crystal species simultaneously and produce nucleus; After the discharging of titanium liquid finishes, start hydrolysis DCS automatic control system, steam valve is heated automatically, steam valve cut out automatically when arrival became grey point (temperature is 106 ± 2 ℃) in 30 minutes; Stop earlier steam separately, stir the continuation operation and stop (steam also stops) after 20 minutes, steam valve starts automatically after about 20 minutes at interval, starts simultaneously and stirs (stopping after being stirred to the hydrolysis end), reaches two boiling points after 45 minutes, and temperature is 110 ℃; Two boiling points finish back insulation 210 minutes; Add 4m at last 3Process water dilution, make metatitanic acid, make rutile-type product 6 through subsequent handling.
The comparative example 4:
With 60m 3Titanium liquid and 13.2m 3End water all be preheated to 97 ℃; End water is joined in the hydrolytic decomposition pot, start simultaneously and stir (stirring moves to and stops after hydrolysis finishes); Titanium liquid is added in the end water continuously equably, generate automatic growing crystal species simultaneously and produce nucleus; After the discharging of titanium liquid finishes, start hydrolysis DCS automatic control system, steam valve is heated automatically, steam valve cut out automatically when arrival became grey point (temperature is 106 ± 2 ℃) in 40 minutes; Stopped steam 30 minutes, and started steam valve afterwards automatically, reach two boiling points after 30 minutes, temperature is 110 ℃; Two boiling points finish back insulation 210 minutes; Add 4m at last 3Process water dilution, make metatitanic acid, make rutile-type product 7 through subsequent handling.
The contrast of the quality product aspect that table two obtains for the method that adopts based on the method for the embodiment of parameter of the present invention and the comparative example that parameter is different from parameter of the present invention, the result is as follows:
Table two
By table two as seen, adopt method,, be more evenly distributed, make color and luster, reducing power, dispersiveness, the brightness of product in mortar be significantly improved because the hydrolysis particle diameter is thinner based on parameter of the present invention.
The present invention is by the heating curve in the hydrolysis process that improves Titanium White Production By Sulfuric Acid Process, and in the change prior art because of fearing to influence the stirring means that strainability adopts the slow speed of revolution to stir, and be to use the higher alr mode of rotating speed, for example propeller type stirs, make that the size distribution of particle is thinner, more even and more regular after the hydrolysis, and improved performances such as the dispersiveness of product, the color and luster in mortar, brightness, reducing power.And, characteristics of the present invention are to stir in hydrolytic process and will stop for some time, and the technology for hydrolyzing that generally adopts stirs need move until hydrolysis always and finishes, and this helps also making that the size distribution of particle is thinner, more even and more regular after the hydrolysis, and has improved the performance of product.
In addition, the operating method according to hydrolysis process of the present invention adopts DSC to control has improved hydrolysis automation of operation degree, has reduced artificial factor.
Although illustrated and described some embodiments of the present invention, it will be understood by those skilled in the art that without departing from the principles and spirit of the present invention, can make various modifications to such embodiment.

Claims (10)

1. hydrolysis process, described hydrolysis process comprises the steps:
With dense titanium liquid and end water preheat to certain temperature;
End water is joined in the hydrolytic decomposition pot, start simultaneously and stir;
Dense titanium liquid continuous discharge is joined in the end water, generate automatic growing crystal species simultaneously and produce nucleus;
After the discharging of titanium liquid finishes, start the hydrolysis automatic control system, steam valve is heated automatically;
After being heated to change ash point, steam valve cuts out automatically, stirs to stop after continuation moves 10~30 minutes;
Automatically start steam valve at interval after 10~30 minutes, start simultaneously and stir, be heated to two boiling points;
Be incubated operation afterwards, wherein be stirred to and stop after hydrolysis finishes;
Add dilution water, thereby make metatitanic acid.
2. hydrolysis process according to claim 1 is characterized in that the discharging of titanium liquid finishes post-heating and is 35~45 minutes to becoming the grey time of putting.
3. hydrolysis process according to claim 1 is characterized in that it is 30~40 minutes that steam valve starts the time that is heated to two boiling points automatically.
4. hydrolysis process according to claim 1 is characterized in that dense titanium liquid and end water preheat to 94 ℃ to 97 ℃.
5. hydrolysis process according to claim 1 is characterized in that described change was 106 ± 2 ℃ at grey o'clock.
6. hydrolysis process according to claim 1 is characterized in that described two boiling points are 107 ℃ to 110 ℃.
7. hydrolysis process according to claim 1 is characterized in that described stirring employing propeller type stirs.
8. hydrolysis process according to claim 1, the stir speed (S.S.) that it is characterized in that described stirring is 60rpm to 90rpm.
9. hydrolysis process according to claim 8, the stir speed (S.S.) that it is characterized in that described stirring is 75rpm.
10. hydrolysis process according to claim 1, it is characterized in that with the step that the discharging of dense titanium liquid joins end water comprise earlier the discharging of dense titanium liquid is joined end water for some time after, after stopping the discharging of dense titanium liquid joined end water for some time, again the discharging of dense titanium liquid is joined the step of end water.
CN 201110003572 2011-01-10 2011-01-10 Hydrolysis process Pending CN102050488A (en)

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Publication number Priority date Publication date Assignee Title
CN105092435A (en) * 2015-07-23 2015-11-25 重庆大学 Metatitanic acid particle growth simulation analysis method in titanium oxysulfate hydrolysis process
CN105152210A (en) * 2015-10-23 2015-12-16 云南千盛实业有限公司 Substitution reaction method of titanium dioxide
CN106430302A (en) * 2016-09-05 2017-02-22 衡阳师范学院 Preparation method of anatase titanium dioxide additional hydrolysis crystal seeds
CN107531506A (en) * 2015-03-31 2018-01-02 好家庭有限公司 Method for preparing oxidation titanium derivative
CN110554715A (en) * 2019-10-25 2019-12-10 攀钢集团攀枝花钢铁研究院有限公司 RBF neural network-based PID control method for hydrolysis process temperature of titanyl sulfate plus seed crystal

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CN101700907A (en) * 2009-11-13 2010-05-05 攀钢集团研究院有限公司 Hydrolysis method for preparing rutile type titanium dioxide

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107531506A (en) * 2015-03-31 2018-01-02 好家庭有限公司 Method for preparing oxidation titanium derivative
CN105092435A (en) * 2015-07-23 2015-11-25 重庆大学 Metatitanic acid particle growth simulation analysis method in titanium oxysulfate hydrolysis process
CN105152210A (en) * 2015-10-23 2015-12-16 云南千盛实业有限公司 Substitution reaction method of titanium dioxide
CN106430302A (en) * 2016-09-05 2017-02-22 衡阳师范学院 Preparation method of anatase titanium dioxide additional hydrolysis crystal seeds
CN110554715A (en) * 2019-10-25 2019-12-10 攀钢集团攀枝花钢铁研究院有限公司 RBF neural network-based PID control method for hydrolysis process temperature of titanyl sulfate plus seed crystal

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Application publication date: 20110511