CN109775754A - The preparation method of high-purity titanium sesquioxide - Google Patents
The preparation method of high-purity titanium sesquioxide Download PDFInfo
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- CN109775754A CN109775754A CN201711105615.0A CN201711105615A CN109775754A CN 109775754 A CN109775754 A CN 109775754A CN 201711105615 A CN201711105615 A CN 201711105615A CN 109775754 A CN109775754 A CN 109775754A
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- titanium sesquioxide
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- sulfuric acid
- titanium
- sesquioxide
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Abstract
The preparation method of high-purity titanium sesquioxide, including titanium sesquioxide raw material is mixed with water, stirring, it crushes, precipitating, it is dry, dry powder crushing is carried out again, the concentration of titanium sesquioxide raw material and the mixed solution of water is 10-30%, the pH value that titanium sesquioxide raw material and dilution heat of sulfuric acid are adjusted when stirring is 6.5-7.5, after agitation, crushing before precipitating is crushed using wet process disintegrator, it further include at least secondary classification separating treatment to titanium sesquioxide raw material and dilution heat of sulfuric acid, the particle diameter of titanium sesquioxide after carrying out scalping separating treatment to titanium sesquioxide raw material and dilution heat of sulfuric acid is between 0.35-0.5 μm, the particle diameter of titanium sesquioxide after secondary grading separating treatment is between 0.2-0.35 μm, to after precipitation process titanium sesquioxide raw material with it is dilute Sulfuric acid solution is surface-treated, and surface treating agent is dimethicone, and the present invention uses thick, thin the second-order separation, and separating effect is ideal, and the yield of titanium sesquioxide is up to 98%, the top standard in the domestic and international same industry, stable product quality.
Description
Technical field
The present invention relates to the preparation methods of titanium sesquioxide, the especially preparation method of high-purity titanium sesquioxide.
Background technique
High-purity titanium sesquioxide is for the delustring auxiliary agent in chemical fibre industry production, and since the sixties, China is high-purity
Degree titanium sesquioxide is all relied on from external Japan, German import, and every annual requirement develops to 35000 tons from a few kiloton.In recent years
Come, domestic many titanium sesquioxide manufacturers and R&D institution's all research to the production of high-purity titanium sesquioxide one after another take
Obtained some research achievements.Currently, the method for domestic production high-purity titanium sesquioxide, in Patent No. 00119513.1
State's patent of invention " a kind of method for preparing chemical fiber grade titanium sesquioxide ", the side of the production high-purity titanium sesquioxide disclosed in it
Method is: using common titanium sesquioxide for raw material, by ingredient, crushes, separates the works such as thick, coating, precipitating, drying, milling
Skill process prepares high-purity titanium sesquioxide product；It is the specific process steps are as follows: by ordinary titanium dioxide and nonionic water
It is added in reactor and is stirred with 1: 6~8 ratio, is sufficiently mixed in the state of PH=7；Subsequently into milling apparatus,
It is fully ground at 60 DEG C~70 DEG C, length of time is depending on material quality, and terminal point control is in 0.1 μm~0.3 μ of partial size
The particle of m accounts for 92%~94%, stops grinding；Mixture after grinding separate slightly using self weight sedimentation, and the time 2~
3 hours, remove partial size and be greater than 1 μm of coarse grain, enter back into coating process, be added at 50 DEG C~60 DEG C potassium, aluminium, arsenic, silicon, zirconium,
Any one of phosphorus or several compounds carry out coating；Then flocculating agent is added to be precipitated；Moisture is removed, to sediment
It is dried；Dried object is crushed with ultrafine crusher, obtains high-purity titanium sesquioxide product.This production high-purity
The method of titanium sesquioxide since separating effect is bad, so, the particle for the high-purity titanium sesquioxide produced is less than 0.2
μm specific gravity it is relatively high, user be easy to cause fracture of wire during carrying out spinning operation.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of particle separating effect of titanium sesquioxide reasons
Think, the preparation method of the high high-purity titanium sesquioxide of yield.
Solution of the invention are as follows: including mixing, stirring with water by titanium sesquioxide raw material, crush, precipitate, dry,
Dry powder crushing is carried out again, further includes at least secondary classification separating treatment to titanium sesquioxide raw material and dilution heat of sulfuric acid.
Further include to after precipitation process titanium sesquioxide raw material and water solution surface treatment.
The pH value that titanium sesquioxide raw material and dilution heat of sulfuric acid are adjusted when stirring is 6.5-7.5.
After agitation, the crushing before determining of sinking is crushed using wet process disintegrator.
The concentration of titanium sesquioxide raw material and the mixed solution of water is 10-30%.
The particle of titanium sesquioxide after carrying out scalping separating treatment to titanium sesquioxide raw material and dilution heat of sulfuric acid
Diameter between 0.35-0.5 μm, the particle diameter of the titanium sesquioxide after secondary grading separating treatment 0.2-0.35 μm it
Between.
The titanium sesquioxide raw material after precipitation process is surface-treated with dilution heat of sulfuric acid using surface treating agent.
Surface treating agent is dimethicone.
The present invention uses thick, thin the second-order separation, and separating effect is ideal, and the yield of titanium sesquioxide is high, up to 98%, is in state
The top standard of the inside and outside same industry, stable product quality.
Specific embodiment
Embodiment: 800 kilograms and 3200 kilograms of second level pure water of raw material titanium sesquioxide are added in stirred tank, is prepared
At the solution of 25% concentration, half an hour is stirred, while while stirring then adjustment pH value is crushed to 6.5 by GSF efficient wet
Machine is crushed, is stirred, is crushed again, is crushed 1.5 hours repeatedly, then once divided by being pumped into the ultra-fine split pole machine of GSDF25J
Grade separates, and the particle diameter of the titanium sesquioxide after scalping separating treatment is 0.4 μm, then by being pumped into ultra-fine point of GSDF10
Pole machine carries out secondary grading separation, and the particle diameter of the titanium sesquioxide after secondary grading separating treatment is 0.3 μm.Through secondary point
Titanium sesquioxide raw material and dilution heat of sulfuric acid after grade separation are sent into settling tank, and 80 kilograms of ammonium hydrogencarbonate precipitating reagents are added, carry out
Clear water is discharged after 8 hours in stirring, precipitating, and the titanium sesquioxide raw material and dilution heat of sulfuric acid that the concentration to precipitate is 33% are by pumping
It send to surface processing trough, 4 kilograms of dimethicone surface treating agents is added into surface processing trough, stir 1 hour progress surface
Processing, then be pumped into 1000 type spray drying towers and be dried, being dried temperature is 360 DEG C, is dried 3 minutes
Afterwards, titanium dioxide raw material and dilution heat of sulfuric acid become 784 kilograms of titanium sesquioxide dry powder, and titanium sesquioxide dry powder is sent to material
Storehouse is sent to pulverizer through mechanical oscillation and is crushed, and smashed titanium sesquioxide dry powder is sent to finished product bin, automatic to count
Amount, packaging.
Claims (2)
1. the preparation method of high-purity titanium sesquioxide, including titanium sesquioxide raw material mixed with water, stirs, crush, precipitating,
Drying carries out dry powder crushing again, it is characterised in that further includes at least secondary classification to titanium dioxide raw material and dilution heat of sulfuric acid
Separating treatment.
2. the preparation method of high-purity titanium sesquioxide according to claim 1, it is characterised in that further include to place of settling
The surface treatment of titanium sesquioxide raw material and dilution heat of sulfuric acid after reason.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711105615.0A CN109775754A (en) | 2017-11-10 | 2017-11-10 | The preparation method of high-purity titanium sesquioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711105615.0A CN109775754A (en) | 2017-11-10 | 2017-11-10 | The preparation method of high-purity titanium sesquioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109775754A true CN109775754A (en) | 2019-05-21 |
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ID=66484443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711105615.0A Pending CN109775754A (en) | 2017-11-10 | 2017-11-10 | The preparation method of high-purity titanium sesquioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109775754A (en) |
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2017
- 2017-11-10 CN CN201711105615.0A patent/CN109775754A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190521 |