CN107652712A - Titanium dioxide coating system and method - Google Patents

Titanium dioxide coating system and method Download PDF

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Publication number
CN107652712A
CN107652712A CN201710945444.6A CN201710945444A CN107652712A CN 107652712 A CN107652712 A CN 107652712A CN 201710945444 A CN201710945444 A CN 201710945444A CN 107652712 A CN107652712 A CN 107652712A
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China
Prior art keywords
coating
titanium dioxide
variable
rotating speed
frequency governor
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CN201710945444.6A
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Chinese (zh)
Inventor
冯炜光
江书安
刘建良
申利
钱春花
杨英
李建菊
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Yunnan Metallurgy Xin Litai Industry Co Ltd
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Yunnan Metallurgy Xin Litai Industry Co Ltd
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Priority to CN201710945444.6A priority Critical patent/CN107652712A/en
Publication of CN107652712A publication Critical patent/CN107652712A/en
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C09C1/3653—Treatment with inorganic compounds
    • C09C1/3661—Coating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06—Treatment with inorganic compounds
    • C09C3/063—Coating

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

The invention discloses titanium dioxide coating system and method, system includes：Titanium dioxide storage tank；First to the 3rd coating agent storage tank；First to the 3rd discharge valve；Coating tank, titanium dioxide exports after it has titanium dioxide entrance, coating agent entrance and coating；Densitometer；Liquid level gauge；Agitating device, it includes multiple impellers and variable-frequency governor, and multiple impellers are connected with variable-frequency governor and are extended in coating tank；Wherein, variable-frequency governor is connected with densitometer, liquid level gauge and first to the 3rd discharge valve respectively, and variable-frequency governor is suitable to the opening and closing according to densitometer and the rotating speed and the first to the 3rd discharge valve of the Signal Regulation multiple impellers of liquid level gauge.The system can be according to the concentration of Titanium dioxide slurry and the addition situation of its liquid level and coating agent in coating tank, the rotating speed of agitating device in coating tank is adjusted in real time, so as to realize that the coating of high concentration Titanium dioxide slurry is handled, and product film layer is fine and close, uniform, steady quality.

Description

Titanium dioxide coating system and method
Technical field
The present invention relates to chemical field, and specifically, the present invention relates to titanium dioxide coating system and method.
Background technology
Due to TiO2The photochemical properties and lattice defect that base-material has, utilize TiO2Base-material prepares titanium dioxide and is used as coating, Just need to use inorganic and organic coated blocking TiO2The photoactivation point of base-material, to improve TiO2Weatherability and glossiness.Simultaneously TiO2Substantially it is hydrophilic and oleophobic material, surface is negatively charged, dispersed very poor in organic media, the titanium being prepared The problems such as white powder coating is also easy to produce loose colour, grows dim, flocculates and precipitate.
Thus, it is necessary to block TiO by surface treatment means2The photoactivation point on surface, completely cut off TiO2With directly connecing for light Touch, improve TiO2The surface chemical property of particle, improve its wetability and dispersiveness in various media.To TiO2Base-material Surface treatment in, limited by prior art, domestic TiO2Coating concentration is typically in 200~300g/L, the energy of coating processing Power is relatively low.
Therefore, existing titanium dioxide coating means still have much room for improvement.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention One purpose is to propose titanium dioxide coating system and method.The system can according to the concentration of Titanium dioxide slurry and its in coating The addition situation of liquid level and coating agent in tank, the rotating speed of agitating device in coating tank is adjusted in real time, so as to realize high concentration The coating processing of Titanium dioxide slurry, and product film layer is fine and close, uniform, steady quality.
In the first aspect of the present invention, the present invention proposes a kind of titanium dioxide coating system.According to an embodiment of the invention, The system includes：
Titanium dioxide storage tank；
First to the 3rd coating agent storage tank, the described first to the 3rd coating agent storage tank have the first to the 3rd outlet valve successively Door；
Coating tank, titanium dioxide exports after the coating tank has titanium dioxide entrance, coating agent entrance and coating, the titanium white Powder entrance is connected with the titanium dioxide storage tank, the coating agent entrance respectively by it is described go out the first to the 3rd material valve with it is described First to the 3rd coating agent storage tank is connected；
Densitometer, the densitometer are arranged between the titanium dioxide storage tank and the titanium dioxide entrance；
Liquid level gauge, the liquid level gauge are arranged in the side wall of the coating tank；
Agitating device, the agitating device include multiple impellers and variable-frequency governor, the multiple impellers with it is described Variable-frequency governor is connected and is extended in the coating tank；
Wherein, the variable-frequency governor respectively with the densitometer, the liquid level gauge and first to the 3rd outlet valve Door is connected, and the variable-frequency governor is suitable to the multiple impellers according to the Signal Regulation of the densitometer and the liquid level gauge The opening and closing of rotating speed and first to the 3rd discharge valve.
Thus, titanium dioxide coating system according to embodiments of the present invention can wrap according to the concentration of Titanium dioxide slurry with it The addition situation of liquid level and coating agent in film tank, the rotating speed of agitating device in coating tank is adjusted in real time, it is highly concentrated so as to realize The coating processing of Titanium dioxide slurry is spent, and product film layer is fine and close, uniform, steady quality.
In addition, titanium dioxide coating system according to the above embodiment of the present invention can also have technology additional as follows special Sign：
In some embodiments of the invention, between the multiple impellers include puddler and gone up along the puddler is axial Every the lower floor's paddle, middle level paddle and upper strata paddle of setting.
In some embodiments of the invention, lower floor's paddle, the middle level paddle and the upper strata paddle are equidistant Set.
In some embodiments of the invention, the titanium dioxide coating system further comprises：Feed pump, the feed pump It is arranged between the titanium dioxide storage tank and the titanium dioxide entrance.
In the second aspect of the present invention, the present invention proposes a kind of titanium dioxide coating system using above-described embodiment to titanium The method that white powder carries out coating nursing.According to an embodiment of the invention, this method includes：
(1) Titanium dioxide slurry is added into the coating tank, when the coating tank level is higher than lower floor's blade, The variable-frequency governor starts, and controls the multiple impellers to be stirred under the first rotating speed；
When the coating tank level is higher than the middle level blade, the variable-frequency governor controls the multiple impellers Stirred under the second rotating speed；
When the coating tank level is completed higher than the upper paddle to feeding, the variable-frequency governor control is described more Layer agitating paddle stirs under the 3rd rotating speed；
After completing charging, the variable-frequency governor controls the multiple impellers to be stirred under the 4th rotating speed；
(2) first discharge valves are opened, during the first coating agent is added into the coating tank, the change frequency modulation Fast device controls the multiple impellers to be stirred under the 5th rotating speed, after the completion of first coating agent addition, the change frequency modulation Fast device controls the multiple impellers to be stirred under the 6th rotating speed；
(3) second discharge valves are opened, during the second coating agent is added into the coating tank, the change frequency modulation Fast device controls the multiple impellers to be stirred under the 5th rotating speed, after the completion of second coating agent addition, the change frequency modulation Fast device controls the multiple impellers to be stirred under the 6th rotating speed；
(4) the 3rd discharge valves are opened, during the 3rd coating agent is added into the coating tank, the change frequency modulation Fast device controls the multiple impellers to be stirred under the 5th rotating speed, after the completion of the 3rd coating agent addition, the change frequency modulation Fast device controls the multiple impellers to be stirred under the 6th rotating speed；
(5) variable-frequency governor controls the multiple impellers to be stirred under the 7th rotating speed, so as to obtained by step (4) Material carries out maturation process, and after completing the maturation process, the variable-frequency governor controls the multiple impellers in eighth-turn Speed is lower to be stirred, to obtain titanium dioxide after coating.
Thus, the method that coating processing is carried out to titanium dioxide according to embodiments of the present invention is by using the above-mentioned reality of the present invention The titanium dioxide coating system of example is applied, so as to the concentration according to Titanium dioxide slurry and its liquid level and coating in coating tank The addition situation of agent, the rotating speed of agitating device in coating tank is adjusted in real time, realize the coating processing of high concentration Titanium dioxide slurry, and Product film layer is fine and close, uniform, steady quality.
In addition, the method according to the above embodiment of the present invention that coating processing is carried out to titanium dioxide can also be with following attached The technical characteristic added：
In some embodiments of the invention, the concentration of the Titanium dioxide slurry is 400~650g/L.
In some embodiments of the invention, first rotating speed is 40~60r/min, second rotating speed is 60~ 80r/min, the 3rd rotating speed are 65~85r/min, and the 4th rotating speed is 70~90r/min.
In some embodiments of the invention, the 5th rotating speed is 75~95r/min, the 6th rotating speed be 60~ 80r/min, the 7th rotating speed are 65~85r/min, and the eighth-turn speed is 60~80r/min.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structural representation of titanium dioxide coating system according to an embodiment of the invention；
Fig. 2 is the structural representation according to the titanium dioxide coating system of further embodiment of the present invention；
Fig. 3 is the method flow schematic diagram according to an embodiment of the invention that coating processing is carried out to titanium dioxide.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " axle To ", " radial direction ", the orientation of the instruction such as " circumference " or position relationship be based on orientation shown in the drawings or position relationship, be only for It is easy to the description present invention and simplifies description, rather than instruction or implies that signified device or element there must be specific side Position, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying relatively important Property or the implicit quantity for indicating indicated technical characteristic.Thus, defining the feature of " first ", " second " etc. can express Or implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two It is individual, three etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " connected ", " connection ", " fixation " should do broad sense Understand, for example, it may be fixedly connected or be detachably connected, or integrally；Can be mechanically connect or Electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be the connection or two of two element internals The interaction relationship of individual element, limited unless otherwise clear and definite.For the ordinary skill in the art, can basis Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the first aspect of the present invention, the present invention proposes a kind of titanium dioxide coating system.According to an embodiment of the invention, With reference to figure 1~2, the system includes：The coating agent storage tank 210,220 and 230 of titanium dioxide storage tank the 100, first to the 3rd, coating tank 300th, densitometer 400, liquid level gauge 500 and agitating device.Wherein, the first to the 3rd coating agent storage tank 210,220 and 230 has successively There is the first to the 3rd discharge valve 211,221 and 231；Coating tank 300 has titanium dioxide entrance 310, coating agent entrance 302 and bag Titanium dioxide outlet 303 after film, titanium dioxide entrance 301 is connected with titanium dioxide storage tank 100, and coating agent entrance 302 is respectively by going out the One to the 3rd material valve 211,221 and 231 is connected with the first to the 3rd coating agent storage tank 210,220 and 230；Densitometer 400 is set Put between titanium dioxide storage tank 100 and titanium dioxide entrance 301；Liquid level gauge 500 is arranged in the side wall of coating tank 300；Stirring dress Put including multiple impellers 610 and variable-frequency governor 620, multiple impellers 610 are connected and extended with variable-frequency governor 620 In coating tank 300；Variable-frequency governor 620 respectively with densitometer 400, the discharge valve 211 of liquid level gauge the 500 and first to the 3rd, 221 are connected with 231, and variable-frequency governor 620 is suitable to the Signal Regulation multiple impellers 610 according to densitometer 400 and liquid level gauge 500 Rotating speed and the first to the 3rd discharge valve 211,221 and 231 opening and closing.
It is described in detail below with reference to Fig. 1~2 pair titanium dioxide coating system according to embodiments of the present invention：
According to an embodiment of the invention, the first to the 3rd coating agent storage tank 210,220 and 230 has first to the 3rd successively Discharge valve 211,221 and 231, i.e. the first coating agent storage tank 210 has the first discharge valve 211, the second coating agent storage tank 220 have the second discharge valve 221, and the 3rd coating agent storage tank has the 3rd discharge valve 231；First to the 3rd discharge valve is fitted In the signal for receiving variable-frequency governor, and opened or closed according to the signal, so as to add the first coating agent, the into coating tank Two coating agents and the 3rd coating agent.
According to the specific embodiment of the present invention, the first coating agent, the second coating agent and the 3rd coating agent can be distinguished It independently is Al2O3、SiO2Or ZrO2。
According to an embodiment of the invention, coating tank 300 is with titanium after titanium dioxide entrance 310, coating agent entrance 302 and coating White powder outlet 303, titanium dioxide entrance 301 is connected with titanium dioxide storage tank 100, and coating agent entrance 302 is respectively by going out first to the Three material valves 211,221 and 231 are connected with the first to the 3rd coating agent storage tank 210,220 and 230, and coating tank 300 is suitable to utilize First to the 3rd coating agent carries out coating processing to Titanium dioxide slurry.
According to a particular embodiment of the invention, the concentration of Titanium dioxide slurry can be 400~650g/L.The system of the present invention By the addition and the speed of agitator that control coating agent in real time according to Titanium dioxide slurry concentration in coating tank and liquid level, it is possible to achieve right Concentration be 400~650g/L Titanium dioxide slurry carry out coating processing, relative in the prior art to titanium dioxide concentration 200~ 300g/L limitation, system of the invention substantially increase production capacity while product quality is ensured.
According to an embodiment of the invention, densitometer 400 is arranged between titanium dioxide storage tank 100 and titanium dioxide entrance 301, close Degree meter 400 is suitable to monitoring by the density of the Titanium dioxide slurry to be discharged in titanium dioxide storage tank 100, anti-by the density of Titanium dioxide slurry Slurry concentration is reflected, and density signal is sent to variable-frequency governor 620, so that variable-frequency governor 620 is adjusted according to density signal Speed of agitator in coating tank.
According to an embodiment of the invention, liquid level gauge 500 is arranged in the side wall of coating tank 300, and liquid level gauge 500 is suitable to monitoring The liquid level of Titanium dioxide slurry in coating tank 100, and liquid level signal is sent to variable-frequency governor 620, so as to variable-frequency governor 620 Speed of agitator in coating tank is adjusted according to liquid level signal.
According to an embodiment of the invention, agitating device includes multiple impellers 610 and variable-frequency governor 620, multilayer stirring Oar 610 is connected and is extended in coating tank 300 with variable-frequency governor 620, and agitating device is suitable to the titanium white in coating tank Slurry material and coating agent are stirred.
According to an embodiment of the invention, variable-frequency governor 620 respectively with densitometer 400, liquid level gauge 500 and first to the 3rd Discharge valve 211,221 is connected with 231, and variable-frequency governor 620 is suitable to the Signal Regulation according to densitometer 400 and liquid level gauge 500 The opening and closing of the rotating speed of multiple impellers 610 and the first to the 3rd discharge valve 211,221 and 231.Inventor has found, at coating In reason, production capacity and product quality that the control of speed of agitator is handled coating play a crucial role, due to being difficult to root in the prior art Adjust the speed of agitator of coating processing in time according to the actual conditions of production so that coating concentration is limited in 200~300g/L, production capacity Reduce；The system of the application, can by adjusting speed of agitator in real time according to the Titanium dioxide slurry density in coating tank and liquid level To realize that the high concentration Titanium dioxide slurry to 400~650g/L carries out coating processing, and product film layer is fine and close, uniform, product matter Amount is stable.
Specifically, inventor is had found by many experiments, if the mixing speed of coating processing is too high, stirring intensity too Greatly, it is too fierce, TiO can be caused2Strong collision between particle, so as to destroy TiO2The hydrous oxide sedimentary of particle surface, makes Product film layer consistency reduces；If speed of agitator is too low, stirring intensity is too small, peaceful slow, TiO can be caused2Slurry can not fill It is scattered, make coating uneven.
According to a particular embodiment of the invention, multiple impellers 610 include puddler 614 and along the axial directions of puddler 614 Spaced lower floor's paddle 611, middle level paddle 612 and upper strata paddle 613.Thus, it is possible to effectively further to coating tank The speed of agitator of interior slurry is controlled, so as to further improve the production capacity and product quality of coating processing.
According to a particular embodiment of the invention, lower floor's paddle 611, middle level paddle 612 and upper strata paddle 613 can be equidistant Set.Thus, it is possible to effectively further the speed of agitator of slurry in coating tank is controlled, so as to further improve coating The production capacity and product quality of processing.
With reference to figure 2, the titanium dioxide coating system of the embodiment of the present invention can further include：Feed pump 700.
According to an embodiment of the invention, feed pump 700 is arranged between titanium dioxide storage tank 100 and titanium dioxide entrance 301.By This, can further improve the production capacity of coating processing.
Thus, titanium dioxide coating system according to embodiments of the present invention can wrap according to the concentration of Titanium dioxide slurry with it The addition situation of liquid level and coating agent in film tank, the rotating speed of agitating device in coating tank is adjusted in real time, it is highly concentrated so as to realize The coating processing of Titanium dioxide slurry is spent, and product film layer is fine and close, uniform, steady quality.
In the second aspect of the present invention, the present invention proposes a kind of titanium dioxide coating system using above-described embodiment to titanium The method that white powder carries out coating processing.According to an embodiment of the invention, this method includes：(1) titanium is added into the coating tank White powder slurry, when the coating tank level is higher than lower floor's blade, the variable-frequency governor starts, and controls described more Layer agitating paddle stirs under the first rotating speed；When the coating tank level is higher than the middle level blade, the variable-frequency governor The multiple impellers are controlled to be stirred under the second rotating speed；When the coating tank level higher than the upper paddle to having fed Into the variable-frequency governor controls the multiple impellers to be stirred under the 3rd rotating speed；After completing charging, the variable-frequency governor The multiple impellers are controlled to be stirred under the 4th rotating speed；(2) first discharge valves are opened, and the is being added into the coating tank During one coating agent, the variable-frequency governor controls the multiple impellers to be stirred under the 5th rotating speed, when described first After the completion of coating agent adds, the variable-frequency governor controls the multiple impellers to be stirred under the 6th rotating speed；(3) second dischargings Valve opening, during the second coating agent is added into the coating tank, the variable-frequency governor controls the multilayer to stir Mix oar to stir under the 5th rotating speed, after the completion of second coating agent addition, the variable-frequency governor controls the multilayer to stir Oar is mixed to stir under the 6th rotating speed；(4) the 3rd discharge valves are opened, and the process of the 3rd coating agent is being added into the coating tank In, the variable-frequency governor controls the multiple impellers to be stirred under the 5th rotating speed, is completed when the 3rd coating agent adds Afterwards, the variable-frequency governor controls the multiple impellers to be stirred under the 6th rotating speed；(5) described in the variable-frequency governor control Multiple impellers stir under the 7th rotating speed, to carry out maturation process to step (4) resulting material, complete the maturation process Afterwards, the variable-frequency governor controls the multiple impellers to be stirred under eighth-turn speed, to obtain titanium dioxide after coating.
The method according to embodiments of the present invention that coating processing is carried out to titanium dioxide is retouched in detail below with reference to Fig. 3 State.According to an embodiment of the invention, this method includes：
S100：Add Titanium dioxide slurry
In the step, Titanium dioxide slurry is added into coating tank, when coating tank level is higher than lower floor's blade, becomes frequency modulation Fast device starts, and controls multiple impellers to be stirred under the first rotating speed；When coating tank level is higher than middle level blade, become frequency modulation Fast device control multiple impellers stir under the second rotating speed；When coating tank level is higher than upper paddle to the completion that feeds, frequency conversion Speed regulator control multiple impellers stir under the 3rd rotating speed；After completing charging, variable-frequency governor controls multiple impellers the Stirred under four rotating speeds.
According to a particular embodiment of the invention, the concentration of Titanium dioxide slurry can be 400~650g/L.The method of the present invention By the addition and the speed of agitator that control coating agent in real time according to Titanium dioxide slurry concentration in coating tank and liquid level, it is possible to achieve right Concentration be 400~650g/L Titanium dioxide slurry carry out coating processing, relative in the prior art to titanium dioxide concentration 200~ 300g/L limitation, method of the invention substantially increase production capacity while product quality is ensured.
According to the specific embodiment of the present invention, during Titanium dioxide slurry is added into coating tank, can incite somebody to action Titanium dioxide slurry in coating tank is warming up to 60~90 DEG C, thus, it is possible to further improve coating processing production capacity and product quality.
According to a particular embodiment of the invention, the first rotating speed can be 40~60r/min, the second rotating speed can be 60~ 80r/min, the 3rd rotating speed can be 65~85r/min, and the 4th rotating speed can be 70~90r/min.Thus, it is possible to further carry High coating processing production capacity and product quality.
S200：Add the first coating agent
In the step, the first discharge valve is opened, during the first coating agent is added into coating tank, frequency control Device control multiple impellers are stirred under the 5th rotating speed, and after the completion of the addition of the first coating agent, variable-frequency governor control multilayer is stirred Oar is mixed to stir under the 6th rotating speed.
According to the specific embodiment of the present invention, the first coating agent can be Al2O3、SiO2Or ZrO2。
According to the specific embodiment of the present invention, before the first coating agent is added into coating tank, it can adjust and stir Mix rotating speed is to 65~85r/min, thus, it is possible to further improve the production capacity and product quality of coating processing.
S300：Add the second coating agent
In the step, the second discharge valve is opened, during the second coating agent is added into coating tank, frequency control Device control multiple impellers are stirred under the 5th rotating speed, and after the completion of the addition of the second coating agent, variable-frequency governor control multilayer is stirred Oar is mixed to stir under the 6th rotating speed.
According to the specific embodiment of the present invention, the second coating agent can be Al2O3、SiO2Or ZrO2。
S400：Add the 3rd coating agent
In the step, the 3rd discharge valve is opened, during the 3rd coating agent is added into coating tank, frequency control Device control multiple impellers are stirred under the 5th rotating speed, and after the completion of the addition of the 3rd coating agent, variable-frequency governor control multilayer is stirred Oar is mixed to stir under the 6th rotating speed.
According to the specific embodiment of the present invention, the 3rd coating agent can be Al2O3、SiO2Or ZrO2。
S500：Maturation process
In the step, variable-frequency governor control multiple impellers stir under the 7th rotating speed, so as to S400 resulting materials Maturation process is carried out, after completing maturation process, variable-frequency governor control multiple impellers stir under eighth-turn speed, to obtain Titanium dioxide after coating.
According to the specific embodiment of the present invention, the time that maturation process is carried out can be 30~70min.Thus, may be used Further to improve the production capacity and product quality of coating processing.
According to a particular embodiment of the invention, above-mentioned 5th rotating speed can be 75~95r/min, and the 6th rotating speed can be 60 ~80r/min, the 7th rotating speed can be 65~85r/min, and eighth-turn speed can be 60~80r/min.
According to an embodiment of the invention, inventor has found, in coating processing, what the control of speed of agitator was handled coating Production capacity and product quality play a crucial role, because the actual conditions being difficult in the prior art according to production adjust coating processing in time Speed of agitator so that coating concentration is limited in 200~300g/L, and production capacity reduces；The system of the application passes through according to coating tank Interior Titanium dioxide slurry density and liquid level adjust speed of agitator in real time, it is possible to achieve to 400~650g/L high concentration titanium white Slurry material carries out coating processing, and product film layer is fine and close, uniform, and product quality is stable.
Specifically, inventor is had found by many experiments, if the mixing speed of coating processing is too high, stirring intensity too Greatly, it is too fierce, TiO can be caused2Strong collision between particle, so as to destroy TiO2The hydrous oxide sedimentary of particle surface, makes Product film layer consistency reduces；If speed of agitator is too low, stirring intensity is too small, peaceful slow, TiO can be caused2Slurry can not fill It is scattered, make coating uneven.
According to the specific embodiment of the present invention, after completing maturation process, by titanium dioxide discharge bag after obtained coating Film tank, when liquid level is less than lower floor's blade in coating tank, liquid level gauge monitors liquid level signal and sends the signal to change frequency modulation Fast device, variable-frequency governor stop stirring according to the signal.
Thus, titanium dioxide coating method according to embodiments of the present invention can wrap according to the concentration of Titanium dioxide slurry with it The addition situation of liquid level and coating agent in film tank, the rotating speed of agitating device in coating tank is adjusted in real time, it is highly concentrated so as to realize The coating processing of Titanium dioxide slurry is spent, and product film layer is fine and close, uniform, steady quality.
Below with reference to specific embodiment, present invention is described, it is necessary to which explanation, these embodiments are only to describe Property, without limiting the invention in any way.
Embodiment
Coating processing is carried out to Titanium dioxide slurry according to the following steps：
(1) Titanium dioxide slurry is added into coating tank, when coating tank level is higher than lower floor's blade, variable-frequency governor opens It is dynamic, and control multiple impellers to be stirred under 40~60r/min rotating speeds；
When coating tank level is higher than middle level blade, variable-frequency governor controls multiple impellers to turn in 60~80r/min Speed is lower to be stirred；
When coating tank level is completed higher than upper paddle to feeding, variable-frequency governor control multiple impellers 65~ Stirred under 85r/min rotating speeds；
After completing charging, variable-frequency governor control multiple impellers stir under 70~90r/min rotating speeds；
(2) variable-frequency governor rotating speed is adjusted to 65~85r/min；
(3) first discharge valves are opened, during the first coating agent is added into coating tank, variable-frequency governor control Multiple impellers are stirred under 75~95r/min rotating speeds, and after the completion of the addition of the first coating agent, variable-frequency governor control multilayer is stirred Oar is mixed to stir under 60~80r/min rotating speeds；
(4) second discharge valves are opened, during the second coating agent is added into coating tank, variable-frequency governor control Multiple impellers are stirred under 75~95r/min rotating speeds, and after the completion of the addition of the second coating agent, variable-frequency governor control multilayer is stirred Oar is mixed to stir under 60~80r/min rotating speeds；
(5) the 3rd discharge valves are opened, during the 3rd coating agent is added into coating tank, variable-frequency governor control Multiple impellers are stirred under 75~95r/min rotating speeds, and after the completion of the addition of the 3rd coating agent, variable-frequency governor control multilayer is stirred Oar is mixed to stir under 60~80r/min rotating speeds；
(6) variable-frequency governor control multiple impellers stir under 65~85r/min rotating speeds, so as to obtained by step (4) Material carries out maturation process, and after completing maturation process, variable-frequency governor control multiple impellers stir under 60~80r/min rotating speeds Mix, to obtain titanium dioxide after coating；
(7) titanium dioxide after obtained coating is discharged into coating tank, when liquid level is less than lower floor's blade in coating tank, liquid level gauge Monitor liquid level signal and send the signal to variable-frequency governor, variable-frequency governor stops stirring according to the signal.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changed, replacing and modification.

Claims (8)

  1. A kind of 1. titanium dioxide coating system, it is characterised in that including：
    Titanium dioxide storage tank；
    First to the 3rd coating agent storage tank, the described first to the 3rd coating agent storage tank have the first to the 3rd discharge valve successively；
    Coating tank, titanium dioxide exports after the coating tank has titanium dioxide entrance, coating agent entrance and coating, and the titanium dioxide enters Mouthful be connected with the titanium dioxide storage tank, the coating agent entrance respectively by it is described go out the first to the 3rd material valve and described first It is connected to the 3rd coating agent storage tank；
    Densitometer, the densitometer are arranged between the titanium dioxide storage tank and the titanium dioxide entrance；
    Liquid level gauge, the liquid level gauge are arranged in the side wall of the coating tank；
    Agitating device, the agitating device include multiple impellers and variable-frequency governor, the multiple impellers and the frequency conversion Speed regulator is connected and is extended in the coating tank；
    Wherein, the variable-frequency governor respectively with the densitometer, the liquid level gauge and first to the 3rd discharge valve phase Even, the variable-frequency governor is suitable to the rotating speed of the multiple impellers according to the Signal Regulation of the densitometer and the liquid level gauge With the opening and closing of the described first to the 3rd discharge valve.
  2. 2. titanium dioxide coating system according to claim 1, it is characterised in that the multiple impellers include puddler and Along puddler axial direction upper spaced lower floor's paddle, middle level paddle and upper strata paddle.
  3. 3. titanium dioxide coating system according to claim 1, it is characterised in that lower floor's paddle, the middle level paddle With the upper strata paddle spaced set.
  4. 4. titanium dioxide coating system according to claim 1, it is characterised in that further comprise：
    Feed pump, the feed pump are arranged between the titanium dioxide storage tank and the titanium dioxide entrance.
  5. 5. a kind of titanium dioxide coating system using described in any one of Claims 1 to 4 carries out the side of coating processing to titanium dioxide Method, it is characterised in that including：
    (1) Titanium dioxide slurry is added into the coating tank, it is described when the coating tank level is higher than lower floor's blade Variable-frequency governor starts, and controls the multiple impellers to be stirred under the first rotating speed；
    When the coating tank level is higher than the middle level blade, the variable-frequency governor controls the multiple impellers the Stirred under two rotating speeds；
    When the coating tank level is completed higher than the upper paddle to feeding, the variable-frequency governor controls the multilayer to stir Oar is mixed to stir under the 3rd rotating speed；
    After completing charging, the variable-frequency governor controls the multiple impellers to be stirred under the 4th rotating speed；
    (2) first discharge valves are opened, during the first coating agent is added into the coating tank, the variable-frequency governor The multiple impellers are controlled to be stirred under the 5th rotating speed, after the completion of first coating agent addition, the variable-frequency governor The multiple impellers are controlled to be stirred under the 6th rotating speed；
    (3) second discharge valves are opened, during the second coating agent is added into the coating tank, the variable-frequency governor The multiple impellers are controlled to be stirred under the 5th rotating speed, after the completion of second coating agent addition, the variable-frequency governor The multiple impellers are controlled to be stirred under the 6th rotating speed；
    (4) the 3rd discharge valves are opened, during the 3rd coating agent is added into the coating tank, the variable-frequency governor The multiple impellers are controlled to be stirred under the 5th rotating speed, after the completion of the 3rd coating agent addition, the variable-frequency governor The multiple impellers are controlled to be stirred under the 6th rotating speed；
    (5) variable-frequency governor controls the multiple impellers to be stirred under the 7th rotating speed, so as to step (4) resulting material Maturation process is carried out, after completing the maturation process, the variable-frequency governor controls the multiple impellers under eighth-turn speed Stirring, to obtain titanium dioxide after coating.
  6. 6. according to the method for claim 5, it is characterised in that the concentration of the Titanium dioxide slurry is 400~650g/L.
  7. 7. according to the method for claim 5, it is characterised in that first rotating speed is 40~60r/min, described second turn Speed is 60~80r/min, and the 3rd rotating speed is 65~85r/min, and the 4th rotating speed is 70~90r/min.
  8. 8. according to the method for claim 5, it is characterised in that the 5th rotating speed is 75~95r/min, described 6th turn Speed is 60~80r/min, and the 7th rotating speed is 65~85r/min, and the eighth-turn speed is 60~80r/min.
CN201710945444.6A 2017-10-12 2017-10-12 Titanium dioxide coating system and method Withdrawn CN107652712A (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108795105A (en) * 2018-07-18 2018-11-13 黄山幻彩颜料科技有限公司 A kind of stable quality, efficiently, the hydrolysis process of the production pearlescent pigment of environmental protection
CN112143260A (en) * 2020-09-02 2020-12-29 中钛集团焦作市裕盛钛业有限公司 Method for coating phosphorus, silicon and aluminum of titanium dioxide
CN114367260A (en) * 2021-12-29 2022-04-19 龙佰禄丰钛业有限公司 Titanium white powder coating production system
CN115029019A (en) * 2022-07-12 2022-09-09 龙佰禄丰钛业有限公司 Adding process of organic coating agent in titanium dioxide production

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108795105A (en) * 2018-07-18 2018-11-13 黄山幻彩颜料科技有限公司 A kind of stable quality, efficiently, the hydrolysis process of the production pearlescent pigment of environmental protection
CN112143260A (en) * 2020-09-02 2020-12-29 中钛集团焦作市裕盛钛业有限公司 Method for coating phosphorus, silicon and aluminum of titanium dioxide
CN114367260A (en) * 2021-12-29 2022-04-19 龙佰禄丰钛业有限公司 Titanium white powder coating production system
CN115029019A (en) * 2022-07-12 2022-09-09 龙佰禄丰钛业有限公司 Adding process of organic coating agent in titanium dioxide production

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Application publication date: 20180202