CN214514247U

CN214514247U - Continuous inorganic cladding device of titanium white powder

Info

Publication number: CN214514247U
Application number: CN202120059678.2U
Authority: CN
Inventors: 陈建立; 赵丁; 侯廉杰; 王二军
Original assignee: Henan Billions Advanced Material Co Ltd
Current assignee: Henan Billions Advanced Material Co Ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-10-29
Anticipated expiration: 2031-01-11

Abstract

The utility model discloses a continuous inorganic cladding device of titanium white powder, including first ground paste storage tank, first premixing jar, second premixing jar and the second ground paste storage tank that loop through the pipeline intercommunication, set gradually first ground paste pump, deionized water addition pipe, steam pipe, coating agent interpolation pipe on the pipeline between first ground paste storage tank and the first premixing jar, be provided with first PH gauge on the pipeline between first premixing jar and the second premixing jar, the pipeline between second premixing jar and the second ground paste storage tank is the heat preservation pipeline, be provided with second PH gauge on the heat preservation pipeline, the discharge end of second ground paste storage tank is provided with the second ground paste pump; use the utility model discloses a continuous inorganic cladding device of titanium white powder can save the diolame time, raises the efficiency, can guarantee the serialization production of inorganic cladding.

Description

Continuous inorganic cladding device of titanium white powder

Technical Field

The utility model relates to a titanium white powder preparation technical field, especially a continuous inorganic cladding device of titanium white powder.

Background

Titanium dioxide is non-toxic, high in refractive index and strong in covering power, is used as a preferred white pigment, and is widely applied to the industries of coatings, plastics, papermaking, printing ink and the like.

At present, the titanium dioxide at home and abroad has two production methods: the chlorination process and the sulfuric acid process are relatively early in development and relatively mature in China, but the processes are complex and have high requirements on environmental protection, the chlorination process is mainly industrialized at abroad, and the chlorination process is favored by people due to short process, strong linkage and less three wastes. The two processes can be divided into two major parts, namely a base material production process and a post-treatment production process. The surface treatment of titanium dioxide is divided into inorganic surface treatment and organic surface treatment (referred to as inorganic coating and organic coating in the titanium dioxide industry). Conventional inorganic coatings are achieved by electrochemical deposition of various metal salts in the liquid phase. The specific process is as follows: titanium dioxide powder falls into a kiln material → a crushing station → a pre-dispersing station (feeding station) → a sanding station → an inorganic coating station → a washing station → a filter pressing station; the inorganic coating process is from a pre-dispersion post to a washing post, firstly, in the pre-dispersion post, deionized water is used for diluting the titanium dioxide crushed in the crushing post to a certain proportion, then dispersing agents made of inorganic and organic substances such as sodium hexametaphosphate, monoisopropanolamine, NaOH (flake caustic soda) and the like are added, and the mechanical stirring is carried out for 1 to 2 hours to prepare titanium dioxide slurry; then, the titanium dioxide slurry is uniformly dispersed by a sand mill at a sand grinding position, various electrolyte inorganic coating materials and auxiliary materials (mainly comprising sodium hexametaphosphate, ammonium dihydrogen phosphate, zirconium sulfate, zirconium oxide, aluminum sulfate, sodium metaaluminate, sodium silicate, sodium metasilicate and the like) are sequentially added at an inorganic coating position, and finally, a large amount of electrolytes contained in the inorganic coated titanium dioxide slurry are fully washed by hot water at a washing position.

Disclosure of Invention

In order to overcome the defects, the utility model discloses an aim at provides a continuous inorganic cladding device of titanium white powder, not only improves production efficiency, realizes the serialization production of titanium white powder full flow, has guaranteed inorganic cladding's homogeneity moreover, improves the quality of product.

In order to achieve the purpose, the utility model is implemented according to the following technical scheme:

a continuous inorganic coating device for titanium dioxide comprises a first slurry storage tank, a first premixing tank, a second premixing tank and a second slurry storage tank which are sequentially communicated through a pipeline, wherein a first slurry pump, a deionized water adding pipe, a steam pipe and a coating agent adding pipe are sequentially arranged on the pipeline between the first slurry storage tank and the first premixing tank, a first PH detector is arranged on the pipeline between the first premixing tank and the second premixing tank, the pipeline between the second premixing tank and the second slurry storage tank is a heat insulation pipeline, a second PH detector is arranged on the heat insulation pipeline, and a second slurry pump is arranged at the discharge end of the second slurry storage tank;

further, the volumes of the first premixing tank and the second premixing tank are the same, the volumes of the first slurry storage tank and the second slurry storage tank are the same, and the volume of the first premixing tank is 1/40-1/30 of the volume of the first slurry storage tank; the volume of the first premixing tank is smaller than that of the first slurry storage tank, so that homogenization can be completed in the process of entering the first slurry pipe or the second slurry tank;

furthermore, the first premixing tank and the second premixing tank both adopt a tank body structure with lower inlet and upper outlet, and the feeding at the lower end and the feeding at the upper port can ensure that the material pumped out of the premixing tank is not instant slurry;

furthermore, the first slurry pump and the second slurry pump have the same pumping power and the same pumping flow, so that the continuity of the coating is ensured.

Compared with the prior art, the titanium dioxide continuous inorganic coating device has the following beneficial effects;

the utility model discloses a jar volume is less than first ground paste storage tank or second ground paste storage tank in advance of jar, second in advance to first to can realize having accomplished the homogenization at the in-process that gets into first ground paste pipe or second ground paste jar, save the diolame time, raise the efficiency. In addition, the slurry entering and exiting the first premixing tank or the second premixing tank is kept consistent, and the continuous production of inorganic coating can be ensured; simultaneously the utility model discloses a jar and the second mixes jar in advance and all adopt the tank body structure of going into from top to bottom in advance to guarantee that the pump mixes jar material in advance not instantaneous ground paste in advance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a TEM analysis using a conventional silicon-aluminum coating film as an example of the present invention;

FIG. 3 is a TEM analysis of a conventional inorganic envelope.

Detailed Description

The invention will be further described with reference to the drawings and specific embodiments, illustrative embodiments and description of which are provided herein to explain the invention, but not as a limitation thereof.

The continuous inorganic coating device of titanium dioxide as shown in fig. 1, the qualified slurry of titanium dioxide without inorganic coating enters a first slurry storage tank 1 through a pipeline, then is pumped into a first premixing tank 6 through a first slurry pump 2 at a certain flow rate, during which deionized water is added through a deionized water adding pipe 3 to dilute the slurry concentration (the flow rate of deionized water is controlled according to the required concentration), a steam pipe 4 is used to heat the slurry, and at the same time, a coating agent inorganic acid (alkali) is added through a coating agent adding pipe 5, a pH value is detected through a first pH detection device 7, so that the addition amount of the coating agent inorganic acid (alkali) is adjusted according to the pH value, then a second layer coating is performed, the flow rate of the coating agent is calculated according to the ratio of the slurry to the coating agent, and the slurry in the first tank 6 is simultaneously pumped into a second tank 8, and the flow rate of the coating agent is adjusted according to a second pH detection device 9, directly enters the inorganic coated second slurry storage tank 11 through the heat insulation pipeline 10 without homogenization, and finally enters the titanium dioxide washing procedure through the second slurry pump 12.

As shown in fig. 1, in the present embodiment, the volumes of the first premix tank 6 and the second premix tank 8 are 1/40-1/30 of the first slurry storage tank 1 and the second slurry storage tank 11, so as to ensure that the coating agent and the slurry can be uniformly mixed in the first premix tank 6 and the second premix tank 8.

As shown in fig. 1, in this embodiment, the first premix tank 6 and the second premix tank 8 both adopt a bottom-in and top-out mode, and the bottom-end feeding and the top-end feeding can ensure that the material pumped out of the premix tanks is not instant slurry.

In this embodiment, the first premixing tank 6 and the second premixing tank 8 are equipped with strong stirring devices for stirring

As shown in fig. 1, in the present embodiment, the slurry is transported while being kept warm by using the warm-keeping piping 10, and in the present embodiment, the pumping rates of the first slurry pump 2 and the second slurry pump 12 are uniform, thereby ensuring the continuity of the coating.

Taking a conventional silicon-aluminum coating as an example, the method is implemented according to the continuous inorganic coating structure diagram, the proportion of the coating agent and the slurry is controlled, the flow rate of slurry entering and exiting the tank is controlled to be consistent, and the slurry storage tank 11 after inorganic coating is sampled and analyzed.

Inorganic coating method	Coating time/min	Oil absorption g/100g	BETm²/g
				Conventional wet coating	350	20.5	24.1588
Continuous inorganic coating	150	17.8	18.2450

As can be seen from the data in the table, the continuous inorganic coating greatly shortens the inorganic coating time and has lower oil absorption and BET.

FIG. 2 is a TEM analysis diagram of a conventional silicon-aluminum coating film as an example using the titanium dioxide continuous inorganic coating device of the present invention; FIG. 3 is a TEM analysis of a conventional inorganic envelope.

As can be seen from the figures 2-3, when the titanium dioxide continuous inorganic coating device of the utility model is used, the coating agent is coated more uniformly, and the conventional inorganic coating agent has no coating or the coating agent is accumulated.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims

1. The utility model provides a continuous inorganic cladding device of titanium white powder, its characterized in that, includes that first ground paste storage tank, first jar, second premix and the second ground paste storage tank are premixed to first ground paste storage tank, first ground paste storage tank and first have set gradually on premixing the pipeline between the jar first ground paste thick liquid pump, deionized water add pipe, steam pipe, coating agent add the pipe, first premix is provided with first PH and detects the meter on premixing the pipeline between the jar with the second, the pipeline between jar and the second ground paste storage tank is the heat preservation pipeline in advance to the second, be provided with second PH on the heat preservation pipeline and detect the meter, the discharge end of second ground paste storage tank is provided with the second ground paste pump.

2. The continuous inorganic cladding device of titanium white according to claim 1, wherein the first premixing tank and the second premixing tank have the same volume, the first slurry storage tank and the second slurry storage tank have the same volume, and the volume of the first premixing tank is 1/40-1/30 of the volume of the first slurry storage tank.

3. The continuous inorganic cladding device of titanium white according to claim 1, wherein the first premixing tank and the second premixing tank both adopt a tank structure of lower inlet and upper outlet.

4. A continuous inorganic coating device of titanium dioxide according to any one of claims 1 to 3, wherein the pumping power of the first slurry pump is the same as that of the second slurry pump.