CN216512905U - Acidolysis continuous reduction system - Google Patents
Acidolysis continuous reduction system Download PDFInfo
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- CN216512905U CN216512905U CN202123298863.6U CN202123298863U CN216512905U CN 216512905 U CN216512905 U CN 216512905U CN 202123298863 U CN202123298863 U CN 202123298863U CN 216512905 U CN216512905 U CN 216512905U
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- trivalent titanium
- acidolysis
- preparation tank
- reduction system
- continuous reduction
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Abstract
The utility model discloses an acidolysis continuous reduction system, which comprises a trivalent titanium preparation tank and an iron powder hopper arranged above the trivalent titanium preparation tank, wherein a feed opening of the iron powder hopper is communicated with the trivalent titanium preparation tank, a discharge opening at the lower part of the trivalent titanium preparation tank is connected with a discharge pipeline of an acidolysis pot through a reducing agent pipeline, and a trivalent titanium delivery pump is arranged in the reducing agent pipeline. And the iron powder in the iron powder hopper enters the trivalent titanium preparation tank to react with the materials in the trivalent titanium preparation tank, so that all tetravalent titanium in the materials is reduced into trivalent titanium. Trivalent titanium has reducing property, and can reduce iron ions into ferrous ions. The material solution with the trivalent titanium is mixed with the discharge of the acidolysis pot, and the trivalent titanium can rapidly react with ferric ions to generate tetravalent titanium and ferrous ions. In addition, the excessive material solution and the discharge of the acidolysis pot are mixed, so that iron ions can be completely removed, and the problem that the content of the trivalent titanium in the sedimentation tank fluctuates after the material solution enters the sedimentation tank can be avoided.
Description
Technical Field
The utility model relates to the technical field of titanium dioxide production, in particular to an acidolysis continuous reduction system.
Background
In the production process of titanium dioxide by a sulfuric acid method, acidolysis of ilmenite is the first step of chemical reaction in the production of titanium dioxide by the sulfuric acid method, crushed ilmenite powder is added into sulfuric acid, titanium dioxide and other reaction components in the ilmenite can react with sulfuric acid to form sulfate, and insoluble impurities are removed by sedimentation and other means. While the solution impurities are mainly ferrous sulfate and ferric sulfate, and when the pH is higher than 2, the ferric sulfate can be hydrolyzed to generate ferric hydroxide precipitate. The hydroxide of iron can be precipitated together with metatitanic acid during hydrolysis to remain in the metatitanic acid, thereby seriously affecting the quality of titanium dioxide. In order to remove iron ions, the prior art needs to add iron powder into an acidolysis pot, and reduce the iron ions into ferrous ions through the iron powder. However, the reaction speed of iron powder and solution is slow, which affects the production efficiency. In addition, in order to ensure complete removal of iron ions, an excess of iron powder is added. And the rest unreacted iron powder enters the sedimentation tank along with the materials and reacts with the tetravalent titanium in the sedimentation tank to reduce the tetravalent titanium into trivalent titanium, so that the content of the trivalent titanium fluctuates.
Therefore, how to solve the technical problem is a technical problem which needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an acidolysis continuous reduction system, which is characterized in that trivalent titanium is prepared firstly, a material solution of the trivalent titanium is mixed with a discharged material of an acidolysis pot, iron ions in the discharged material of the acidolysis pot are reduced into ferrous ions, the reaction speed is accelerated, and the stable content of the trivalent titanium in the mixed solution is ensured.
In order to achieve the aim, the utility model provides an acidolysis continuous reduction system which comprises a trivalent titanium preparation tank and an iron powder hopper arranged above the trivalent titanium preparation tank, wherein a feed opening of the iron powder hopper is communicated with the trivalent titanium preparation tank, a discharge opening at the lower part of the trivalent titanium preparation tank is connected with a discharge pipeline of an acidolysis pot through a reducing agent pipeline, and a trivalent titanium delivery pump is arranged in the reducing agent pipeline.
Preferably, an electromagnetic flow meter for detecting the flow of the reducing agent and an electric regulating valve for regulating the flow of the reducing agent are arranged in the reducing agent pipeline.
Preferably, the device also comprises a detection port which is connected with a discharge pipeline of the acidolysis pot and is used for detecting the trivalent titanium.
Preferably, a stirrer is also arranged in the trivalent titanium preparation tank.
Preferably, the discharge hole is separated from the bottom of the trivalent titanium preparation tank by a preset distance.
Preferably, a feeding pipeline connected with a discharging pipeline of the acidolysis pot is arranged at the top of the trivalent titanium preparation tank, and a feeding valve is arranged in the feeding pipeline.
Preferably, the trivalent titanium preparation tank is provided with a liquid level meter for detecting the liquid level height.
Preferably, the level gauge is a radar level gauge.
The acidolysis continuous reduction system provided by the utility model comprises a trivalent titanium preparation tank and an iron powder hopper arranged above the trivalent titanium preparation tank, wherein a feed opening of the iron powder hopper is communicated with the trivalent titanium preparation tank, a discharge opening at the lower part of the trivalent titanium preparation tank is connected with a discharge pipeline of an acidolysis pot through a reducing agent pipeline, and a trivalent titanium delivery pump is arranged in the reducing agent pipeline.
And the iron powder in the iron powder hopper enters the trivalent titanium preparation tank to react with the materials in the trivalent titanium preparation tank, so that all tetravalent titanium in the materials is reduced into trivalent titanium. The trivalent titanium has reducing property, and can reduce iron ions into ferrous ions. The material solution with the trivalent titanium is mixed with the discharged material of the acidolysis pot, and the trivalent titanium can rapidly react with the ferric ions to generate tetravalent titanium and ferrous ions. In addition, the excessive material solution and the discharge of the acidolysis pot are mixed, so that iron ions can be completely removed, and the problem that the content of the trivalent titanium in the sedimentation tank fluctuates after the material solution enters the sedimentation tank can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an acidolysis continuous reduction system provided by the present invention.
Wherein the reference numerals in fig. 1 are:
the iron powder preparation device comprises an iron powder hopper 1, a trivalent titanium preparation tank 2, a trivalent titanium conveying pump 3, an acidolysis pot 4, an electromagnetic flow meter 5 and an electric regulating valve 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an acidolysis continuous reduction system provided by the present invention.
The acidolysis continuous reduction system provided by the utility model comprises a trivalent titanium preparation tank 2 and an iron powder hopper 1. As shown in fig. 1, an iron powder hopper 1 is fixed above a trivalent titanium preparation tank 2, a feed opening of the iron powder hopper 1 is communicated with the trivalent titanium preparation tank 2, and the feed opening is connected with a switch valve. And opening the switch valve to enable excessive iron powder to enter the trivalent titanium preparation tank 2 and react with the materials to completely reduce iron ions and tetravalent titanium in the materials into trivalent titanium. The reducing agent pipeline connects the discharge port at the lower part of the trivalent titanium preparation tank 2 with the discharge pipeline of the acidolysis pot 4, and a trivalent titanium delivery pump 3 is arranged in the reducing agent pipeline. The trivalent titanium delivery pump 3 sends the material solution of trivalent titanium into the discharge pipeline, and mixes with the discharge of the acidolysis pot 4 in the discharge pipeline. The trivalent titanium reacts with the iron ions in the discharge of the acidolysis pot 4 in the discharge pipeline, so as to achieve the purpose of removing the iron ions.
Optionally, a feeding pipeline used for being connected with a discharging pipeline of the acidolysis pot 4 is arranged at the top of the trivalent titanium preparation tank 2, and the discharged material of the acidolysis pot 4 enters the trivalent titanium preparation tank 2 through the feeding pipeline. A feed valve is arranged in the feed pipeline and is used for controlling the materials entering the trivalent titanium preparation tank 2. The tetravalent titanium in the acidolysis product is completely reduced into trivalent titanium, and then the trivalent titanium is used as a reducing agent for reacting with other batches of acidolysis products, so that not only can iron ions in the trivalent titanium be removed, but also other impurities can be prevented from being introduced. Meanwhile, the reaction rate can be improved by mixing the liquids to react. In addition, the discharge port is separated from the bottom of the trivalent titanium preparation tank 2 by a preset distance. When the trivalent titanium is prepared, excessive iron powder is often required to be added into the trivalent titanium preparation tank 2, and the iron powder can be prevented from entering the discharge of the acidolysis pot 4 after the discharge port is increased.
Optionally, a radar level gauge may be disposed on the top of the trivalent titanium preparation tank 2. The radar liquid level meter can detect the height of the materials in the trivalent titanium preparation tank 2 in the feeding process, and the feeding valve is closed when the materials reach the preset height. Of course, the user may also use other types of level meters according to the need and set the installation position of the level meter by himself, which is not limited herein.
Optionally, an electromagnetic flow meter 5 and an electric regulating valve 6 are arranged in the reducing agent pipeline. The electromagnetic flow meter 5 can detect the flow of the reducing agent, and an operator can adjust the electric adjusting valve 6 according to the flow of the reducing agent, so that the flow of the reducing agent can be controlled within a proper range. The electromagnetic flow meter 5 and the electric regulating valve 6 form the feedback control of the flow of the reducing agent, and the accuracy of the flow control is improved.
Optionally, the continuous reduction system of acidolysis still includes the detection mouth, and the detection mouth sets up on the discharging pipe line of acidolysis pot 4, and through detecting whether contain trivalent titanium in the acidolysis product after mouthful sampling detectable and reductant mixes, if contain trivalent titanium then explain that iron ion clears away completely. In addition, the acidolysis continuous reduction system can also comprise a controller, and the electromagnetic flow meter 5 and the electric regulating valve 6 are connected with the controller. If the detection port does not detect trivalent titanium, the controller may increase the opening of the electric regulator valve 6.
In addition, a stirrer is provided in the trivalent titanium preparation tank 2. The stirrer is disposed in the trivalent titanium preparation tank 2, and the stirring paddle is inserted into the material. The stirring paddle can accelerate the reaction between the materials and the iron powder, and ensure that the trivalent titanium solution is prepared before the acidolysis product of the next batch is discharged.
In this embodiment, the continuous acidolysis reduction system is provided with the trivalent titanium preparation tank 2, and the acidolysis product is reacted with excessive iron powder in the trivalent titanium preparation tank 2, so that all tetravalent titanium in the acidolysis product is reduced to trivalent titanium. And then trivalent titanium is used as a reducing agent to react with other batches of acidolysis products, so that the ferric ions in the acidolysis products are reduced into ferrous ions.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The acid hydrolysis continuous reduction system provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides an acidolysis continuous reduction system, its characterized in that is in including trivalent titanium preparation groove (2) and setting iron powder hopper (1) of trivalent titanium preparation groove (2) top, the feed opening of iron powder hopper (1) with trivalent titanium preparation groove (2) intercommunication, the discharge gate of trivalent titanium preparation groove (2) lower part passes through the reductant pipeline and links to each other with the discharging line of acidolysis pot (4), be equipped with trivalent titanium delivery pump (3) in the reductant pipeline.
2. The acid hydrolysis continuous reduction system according to claim 1, wherein an electromagnetic flow meter (5) for detecting a flow rate of the reducing agent and an electric control valve (6) for adjusting the flow rate of the reducing agent are provided in the reducing agent line.
3. The acid hydrolysis continuous reduction system as claimed in claim 2, further comprising a detection port for detecting trivalent titanium in connection with a discharge line of the acid hydrolysis pot (4).
4. An acidolysis continuous reduction system according to claim 3, wherein an agitator is further provided in the trivalent titanium preparation tank (2).
5. The acidolysis continuous reduction system according to claim 4, wherein the discharge port is spaced a predetermined distance from the bottom of the trivalent titanium preparation tank (2).
6. The acidolysis continuous reduction system according to any one of claims 1 to 5, wherein a feed line for connecting with a discharge line of the acidolysis pot (4) is provided at the top of the trivalent titanium preparation tank (2), and a feed valve is provided in the feed line.
7. The acidolysis continuous reduction system according to claim 6, wherein the trivalent titanium preparation tank (2) is provided with a level gauge for detecting a level of liquid.
8. The acid hydrolysis continuous reduction system of claim 7, wherein the level gauge is a radar level gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298863.6U CN216512905U (en) | 2021-12-24 | 2021-12-24 | Acidolysis continuous reduction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298863.6U CN216512905U (en) | 2021-12-24 | 2021-12-24 | Acidolysis continuous reduction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216512905U true CN216512905U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123298863.6U Active CN216512905U (en) | 2021-12-24 | 2021-12-24 | Acidolysis continuous reduction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216512905U (en) |
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2021
- 2021-12-24 CN CN202123298863.6U patent/CN216512905U/en active Active
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