CN105062151A - Inorganic titanium dioxide surface treatment device and method - Google Patents
Inorganic titanium dioxide surface treatment device and method Download PDFInfo
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- CN105062151A CN105062151A CN201510558133.5A CN201510558133A CN105062151A CN 105062151 A CN105062151 A CN 105062151A CN 201510558133 A CN201510558133 A CN 201510558133A CN 105062151 A CN105062151 A CN 105062151A
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Abstract
The invention discloses an inorganic titanium dioxide surface treatment device and method. The device comprises a sand mill, a test system, a vibrating screen, curing tanks with stirrers, a steam source and a corresponding pipeline, wherein a steam pipeline is connected with a pulp conveying pipeline; a temperature test point is arranged at the end, close to the sand mill, of the steam pipeline; a plurality of coating agent addition holes are formed in a barrel of the sand mill and are close to a pulp inlet; a pH value test point and a temperature test point are arranged at an outlet of the sand mill; the pulp enters the curing tanks after being screened by the vibrating screen. The inorganic titanium dioxide surface treatment device and method have the beneficial effects that titanium dioxide particles are coated more uniformly by timely preventing fine particles subjected to sanding from being agglomerated by utilizing coating layers, so that the effects of inorganic surface treatment can be greatly improved.
Description
Technical field
The present invention relates to titanium dioxide inorganic surface treatment technical field, be specifically related to a kind of titanium dioxide inorganic surface treatment apparatus and method.
Background technology
Titanium dioxide physics, stable chemical nature, optics and pigment performance excellence, be the white pigment that performance is best in the world at present, be applied to multiple fields.But because it exists certain seed defect, there is many photolytic activities point on the surface, light-catalyzed reaction can occur under action of ultraviolet light.Its photocatalytic activity can make organic matter degradation, makes paint of coating rete aging yellowing.Inorganic coating is carried out to the surface of titanium dioxide, the intrinsic defect of titanium dioxide particle can be improved or change the character on its surface, improve its various pigment performance and the dispersiveness in different media.
The all useful interval type coating process of all inorganic coatings of titanium powder industry in China, there is coacervate in its shortcoming mainly titania slurry, affects covered effect.In order to reduce the quantity of titanium dioxide coacervate in coating slurry, improving the integrity of coating homogeneity, carrying out coating again after having document to describe to select dispersion agent to improve slurry system viscosity, or adopting continuous coating mode to improve covered effect.But these modes all effectively could not eliminate the coacervate problem in titania slurry.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, providing a kind of titanium dioxide inorganic surface treatment apparatus and method, for eliminating the technical problem of the reunion occurred in titania slurry.
Consider the problems referred to above of prior art, according to an aspect disclosed by the invention, the present invention by the following technical solutions:
A kind of titanium dioxide inorganic surface treatment device, it comprises steam-pipe, slurry transport lines, sand mill, vibratory screening apparatus, one-level ripening tank and two stage cooking groove, described steam-pipe is connected with described slurry transport lines, described slurry transport lines is connected with described sand mill again, described sand mill outlet arranges vibratory screening apparatus, described vibratory screening apparatus is connected with described one-level ripening tank by pipeline again, and described one-level ripening tank is connected with described two stage cooking groove by pipeline again.
In order to realize the present invention better, further technical scheme is:
According to one embodiment of the invention, described slurry transport lines is arranged a temperature test point.
According to another embodiment of the invention, described sand mill outlet arranges pH value test point and another temperature test point.
According to another embodiment of the invention, three grades of ripening tanks are also set after described two stage cooking groove.
The present invention can also be:
A method for titanium dioxide inorganic surface treatment, it comprises:
I) open sand mill, supply titania slurry by slurry transport lines to sand mill;
II) open steam heating valve on steam-pipe, pass into steam heating titania slurry;
III) open coating agent on sand mill and add valve, in sand mill, add coating agent;
IV) titania slurry after coating leaves sand mill, and through bolting, the lower slurry of sieve enters one-level ripening tank and stirs and be incubated;
V) after one-level ripening tank, slurry overflow enters two stage cooking groove and stirs insulation, and then slurry overflows and enters lower operation, and coating terminates.
VI) as required, in two stage cooking groove, continue other material coated, set up three grades of ripening tanks simultaneously.
According to another embodiment of the invention, by steam heating, the slurry temperature in described sand mill is made to be positioned at 55 DEG C ~ 62 DEG C.
According to another embodiment of the invention, the slurry pH value in sand mill is 9.5 ~ 10.0.
Compared with prior art, one of beneficial effect of the present invention is:
A kind of titanium dioxide inorganic surface treatment apparatus and method of the present invention, inorganic surface treatment is carried out on the fine particle surface directly produced when sand milling, again reunite after preventing fine particle sand milling, coated homogeneity is not only made to be improved, more be conducive to the coated of other inorganic film of postorder, thus improve the application performance of the finished product.
Accompanying drawing explanation
In order to clearer explanation present specification embodiment or technical scheme of the prior art, below the accompanying drawing used required in the description to embodiment or prior art is briefly described, apparently, the accompanying drawing that the following describes is only the reference to some embodiments in present specification, for those skilled in the art, when not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of inorganic surface treatment device of the present invention.
1-steam-pipe, 2-slurry transport lines, the agent of 3-coating adds entrance, 4-pH value test point, 5-temperature test point, 6-one-level ripening tank, 7-two stage cooking groove, 8-vibratory screening apparatus, 9-sand mill.
Fig. 2 is the particle size distribution figure of titanium dioxide sample prepared by embodiment according to the present invention 1.
Fig. 3 is the particle size distribution figure of titanium dioxide sample prepared by embodiment according to the present invention 2.
Fig. 4 is the particle size distribution figure of the titanium dioxide sample according to comparison example 1 preparation of the present invention.
Fig. 5 is the particle size distribution figure of titanium dioxide sample prepared by embodiment according to the present invention 2.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, a kind of titanium dioxide inorganic surface treatment device, it comprises steam-pipe 1, slurry transport lines 2, sand mill 9, vibratory screening apparatus 8, one-level ripening tank 6 and two stage cooking groove 7, described steam-pipe 1 is connected with described slurry transport lines 2, described slurry transport lines 2 is connected with described sand mill 9 again, described sand mill 9 outlet arranges vibratory screening apparatus 8, described vibratory screening apparatus 8 is connected with described one-level ripening tank 6 by pipeline again, and described one-level ripening tank 6 is connected with described two stage cooking groove 7 by pipeline again.Slurry transport lines 2 can be arranged a temperature test point 5.Sand mill 9 outlet arranges pH value test point 4 and another temperature test point 5.
According to practical situation, after two stage cooking groove 7, three grades of ripening tanks, level Four ripening tank etc. also can be set.
The use procedure of above device is: titania slurry in slurry transport lines 2 by steam heating after enter sand mill 9, slurry is in sand grinding process, in sand mill 9, coating agent is added by corresponding filling tube, after the later slurry of coating leaves sand mill 9, sieve through vibratory screening apparatus 8, the lower slurry of sieve enters one-level ripening tank 6 successively and two stage cooking groove 7 stirs insulation.
When titania slurry temperature is inadequate, only need opens or steam regulation flow, can in the duct slurry is heated to require temperature.When slurry grinds in sand mill 9, titanium dioxide granule is pulverized further, and granularity is more tiny, also more easily reunites.Now in sand mill 9, introduce coating agent, coating layer can be formed on these fine particles, prevent these fine particles to reunite.After slurry leaves sand mill 9, other rete coated can be continued in the ripening tank of postorder.Visible, this inorganic surface treatment device utilizes coating layer to prevent the reunion of fine particle after sand milling in time, make TiO 2 particles coated evenly, thus greatly can improve the effect of inorganic surface treatment.
Steam-pipe 1 is mainly used for the heating to titania slurry, reaches inorganic surface treatment requirement to make slurry temperature.Heating temperature regulates by steam flow.
Coating agent on sand mill 9 adds tight-lipped by the setting of titania slurry entrance.Obtain coated after TiO 2 particles can be made like this to grind fragmentation in time, thus effectively prevent the further reunion of broken particles.
Test macro is mainly used in the tests such as slurry temperature, pH value, flow.Slurry temperature and flow testing system are arranged on sand mill gating location, and pH value test setting is in sand mill outlet position.
Sand milling disposed slurry is through vibrosieve, and amputation coarse particles, undersize material enters in postorder ripening tank can be needed to proceed inorganic surface treatment according to technique.
A method for titanium dioxide inorganic surface treatment, it comprises:
I) open sand mill 9, supply titania slurry by slurry transport lines 2 to sand mill 9;
II) open steam heating valve on steam-pipe 1, pass into steam heating titania slurry;
III) open coating agent on sand mill 9 and add valve, in sand mill 9, add coating agent;
IV) titania slurry after coating leaves sand mill 9, sieves through vibratory screening apparatus 8, and the lower slurry of sieve enters one-level ripening tank 6 and stirs and be incubated;
V) after one-level ripening tank 6, slurry overflow enters two stage cooking groove 7 and stirs insulation, and then slurry overflows and enters lower operation, and coating terminates.
VI) as required, in two stage cooking groove, continue other material coated, set up three grades of ripening tanks simultaneously.
Embodiment 1
Be in the sand mill (useful volume 7.92L, filling ratio 80%, sand milling slurry volume 1.6L) of 10L to volume, by the flow of 10L/h to sand mill charging, titania slurry concentration is 500g/L.Open steam heating, make slurry temperature in sand mill be 55 DEG C.Add entrance by coating agent and add Al simultaneously
2o
3concentration is Tai-Ace S 150 and the sodium aluminate solution of 100gl/L, and maintenance slurry pH value is 9.5 ~ 10.0, Al
2o
3coating quantity counts TiO
23.0% of quality.Coating disposed slurry is through bolting, and the lower slurry of sieve enters the one-level ripening tank that volume is 10L, stirs and is incubated; Slurry overflow enters the two stage cooking groove that volume is 10L, stirs and is incubated; Two stage cooking groove overflow slurry after filtration, washing, dry, pulverize and obtain sample.
Embodiment 2
Be in the sand mill (useful volume 7.92L, filling ratio 80%, sand milling slurry volume 1.6L) of 10L to volume, by the flow of 20L/h to sand mill charging, titania slurry concentration is 500g/L.Open steam heating, make slurry temperature in sand mill be 62 DEG C.Add entrance by coating agent and add SiO simultaneously
2concentration is the sodium silicate solution of 100gl/L and the sulphuric acid soln of 10%, and maintenance slurry pH value is 9.5 ~ 10.0, SiO
2coating quantity counts TiO
24.0% of quality.Coating disposed slurry is through bolting, and the lower slurry of sieve enters the one-level ripening tank that volume is 10L, stirs and is incubated; Slurry overflow enters the two stage cooking groove that volume is 10L, adds Al simultaneously
2o
3concentration is Tai-Ace S 150 and the sodium aluminate solution of 100gl/L, and maintenance slurry pH value is 9.5 ~ 10.0, Al
2o
3coating quantity counts TiO
23.0% of quality; The overflow of two stage cooking groove slurry enters three grades of ripening tanks, is incubated and stirs.Overflow slurry after filtration, washing, dry, pulverize and obtain sample.
Contrast embodiment 1
Be in 2L beaker, add the 1L slurry that titanium dioxide concentration is 500g/L to volume, open and stir, and be heated to 55 DEG C; Add Al simultaneously
2o
3concentration is Tai-Ace S 150 and the sodium aluminate solution of 100gl/L, and maintenance slurry pH value is 9.5 ~ 10.0, Al
2o
3coating quantity counts TiO
23.0% of quality, Tai-Ace S 150 and sodium aluminate solution joining day are 10min; After reinforced end, insulation 2h; The slurry obtained through sieved through sieve, more after filtration, washing, dry, pulverize and obtain sample.
Contrast embodiment 2
Be in 2L beaker, add the 1L slurry that titanium dioxide concentration is 280g/L to volume, open and stir, and be heated to 55 DEG C; Add Al simultaneously
2o
3concentration is Tai-Ace S 150 and the sodium aluminate solution of 100gl/L, and maintenance slurry pH value is 9.5 ~ 10.0, Al
2o
3coating quantity counts TiO
23.0% of quality, Tai-Ace S 150 and sodium aluminate solution joining day are 45min; After reinforced end, insulation 2h; The slurry obtained through sieved through sieve, more after filtration, washing, dry, pulverize and obtain sample.
Table 1 is the Comparative result analysis of example 1 ~ 2 and comparative examples 1 ~ 2.
The Comparative result analysis of table 1 example 1 ~ 2 and comparative examples 1 ~ 2
From table 1, compared with comparative example, after adopting the technology of the present invention, improve the oil-dispersing property of titanium dioxide, improve product degree of cleaning, decrease the reunion of particle.
In sum, coating layer of the present invention prevents the reunion of fine particle after sand milling in time, make TiO 2 particles coated evenly, thus greatly can improve the effect of inorganic surface treatment.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, identical similar portion cross-reference between each embodiment.
Spoken of in this manual " embodiment ", " another embodiment ", " embodiment ", etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and be included at least one embodiment of the application's generality description.Multiple place occurs that statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, when describing specific features, structure or a feature in conjunction with any embodiment, what advocate is also fall within the scope of the invention to realize this feature, structure or feature in conjunction with other embodiments.
Although with reference to multiple explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of and claim open in the application, multiple modification and improvement can be carried out to the building block of subject combination layout and/or layout.Except the modification of carrying out building block and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (8)
1. a titanium dioxide inorganic surface treatment device, it is characterized in that it comprises steam-pipe (1), slurry transport lines (2), sand mill (9), vibratory screening apparatus (8), one-level ripening tank (6) and two stage cooking groove (7), described steam-pipe (1) is connected with described slurry transport lines (2), described slurry transport lines (2) is connected with described sand mill (9) again, described sand mill (9) outlet arranges vibratory screening apparatus (8), described vibratory screening apparatus (8) is connected with described one-level ripening tank (6) by pipeline again, described one-level ripening tank (6) is connected with described two stage cooking groove (7) by pipeline again.
2. titanium dioxide inorganic surface treatment device according to claim 1, is characterized in that described slurry transport lines (2) being arranged a temperature test point (5).
3. titanium dioxide inorganic surface treatment device according to claim 1, is characterized in that described sand mill (9) outlet arranges pH value test point (4) and another temperature test point (5).
4. titanium dioxide inorganic surface treatment device according to claim 1, also arranges three grades of ripening tanks after it is characterized in that described two stage cooking groove (7).
5. a method for titanium dioxide inorganic surface treatment, is characterized in that it comprises:
I) open sand mill (9), supply titania slurry by slurry transport lines (2) to sand mill (9);
II) open steam heating valve on steam-pipe (1), pass into steam heating titania slurry;
III) open the upper coating agent of sand mill (9) and add valve, in sand mill (9), add coating agent;
IV) titania slurry after coating leaves sand mill (9), and through vibratory screening apparatus (8) screening, the lower slurry of sieve enters one-level ripening tank (6) and stirs and be incubated;
V) after one-level ripening tank (6), slurry overflow enters two stage cooking groove (7) and stirs insulation, and then slurry overflows and enters lower operation, and coating terminates.
6. titanium dioxide inorganic surface treatment device according to claim 5, is characterized in that it also comprises:
VI) as required, in two stage cooking groove, continue other material coated, set up three grades of ripening tanks simultaneously.
7. the titanium dioxide inorganic surface treatment device according to claim 5 or 6, is characterized in that by steam heating, makes the slurry temperature in described sand mill (9) be positioned at 55 DEG C ~ 62 DEG C.
8. the titanium dioxide inorganic surface treatment device according to claim 5 or 6, is characterized in that the slurry pH value in sand mill (9) is 9.5 ~ 10.0.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| CN2923024Y (en) * | 2006-05-19 | 2007-07-18 | 比亚迪股份有限公司 | Covering ball mill |
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| 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 |
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