Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for controlling morphology of boehmite

A boehmite and morphology technology, applied in the direction of alumina/hydroxide, etc., can solve problems such as increased production costs, inability to convert into products, and environmental pollution

Active Publication Date: 2012-10-03
TAISHAN MEDICAL UNIV
View PDF0 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method and device for regulating the morphology of boehmite, aiming at solving the deficiency of the method for regulating the morphology of boehmite provided by the prior art, and currently researchers generally use an aluminum salt as a raw material, and additionally add The additive method introduces irrelevant cations while regulating the morphology of boehmite. These irrelevant cationic elements cannot be converted into products and can only be discharged as waste, which brings environmental pollution and increased production costs.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for controlling morphology of boehmite
  • Method and device for controlling morphology of boehmite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0048] Example 2: First, analytically pure Al 2 (SO 4 ) 3 18H 2 O, Al(NO 3 ) 3 9H 2 O was added to two containers respectively, deionized water was added, stirred on a magnetic stirrer 11 to dissolve it, and Al 3+ Transparent solutions with equal or different concentrations are marked as solution A and solution B respectively; secondly, according to the anion molar ratio of 1:4.5, that is, SO 4 2- : NO 3 - =1: 4.5, add in hydrothermal reactor 121 liner and mix, then add a certain amount of urea as precipitating agent, the addition of urea is to precipitate all Al 3+ 150% of the required theoretical demand, continue to stir for half an hour, and make a transparent solution C; then, control the filling degree of solution C in the hydrothermal reaction kettle 121 at 75%, seal the hydrothermal reaction kettle 121, and place it In the electrothermal constant temperature blast drying oven 122, control the hydrothermal temperature at 150°C, react for 24 hours, and cool to r...

Embodiment 3

[0049] Example 3: First, analytically pure Al 2 (SO 4 ) 3 18H 2 O, Al(NO 3 ) 3 9H 2 O was added to two containers respectively, deionized water was added, stirred on a magnetic stirrer 11 to dissolve it, and Al 3+ Transparent solutions with equal or different concentrations are marked as solution A and solution B respectively; secondly, according to the anion molar ratio of 1:3, that is, SO 4 2- : NO 3 - =1: 3, add in hydrothermal reactor 121 liner and mix, then add a certain amount of urea as precipitating agent, the addition of urea is to precipitate all Al 3+ 100% of the required theoretical demand, continue to stir for half an hour, and make a transparent solution C; then, control the filling degree of solution C in the hydrothermal reaction kettle 121 at 70%, seal the hydrothermal reaction kettle 121, and place it In the electrothermal constant temperature blast drying oven 122, control the hydrothermal temperature at 180°C, react for 12 hours, and naturally coo...

Embodiment 4

[0050] Example 4: First, the analytically pure Al 2 (SO 4 ) 3 18H 2 O, AlCl 3 9H 2 O was added to two containers respectively, deionized water was added, stirred on a magnetic stirrer 11 to dissolve it, and Al 3+ Transparent solutions with equal or different concentrations are marked as solution A and solution B respectively; secondly, according to the anion molar ratio of 1:18, that is, SO 4 2- :Cl - =1:18, add in hydrothermal reactor 121 liner and mix, then add a certain amount of urea as precipitating agent, the addition of urea is to precipitate all Al 3+ 125% of the required theoretical demand, continue to stir for half an hour, and make a transparent solution C; then, control the filling degree of solution C in the hydrothermal reaction kettle 121 at 80%, seal the hydrothermal reaction kettle 121, and place it In the electrothermal constant temperature blast drying oven 122, control the hydrothermal temperature at 120°C, react for 24 hours, and cool to room tempe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of chemical production, and provides a method and a device for controlling the morphology of boehmite. The method comprises the following steps of: respectively dissolving two analytically pure aluminum salts in deionized water to prepare solutions; adding the two aluminum salt solutions into a hydrothermal reaction kettle according to a certain anion mole ratio, adding a certain amount of precipitant and controlling the filling factor of the mixed liquor in the hydrothermal reaction kettle within 67-80%; sealing the hydrothermal reaction kettle, controlling the hydrothermal temperature within 120-200 DEG C and reacting for 4-24h; centrifugally separating sediment products at a revolving speed of 4000rpm; respectively washing the sediment products by using deionized water and absolute ethyl alcohol; and placing in a vacuum drying oven of 80-100 DEG C to dry for 4-8h, so as to obtain boehmite superfine powder with different morphologies. The preparation of the boehmite superfine powder is finished in liquid phase at once, the raw materials are inexpensive and easy to get, no additive is needed, the morphology control method is simpler and more convenient, the after-treatment process is simple, and the product dispersion is even and the morphology change is rich.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a method and a device for regulating the morphology of boehmite. Background technique [0002] Boehmite is also called boehmite, its English name is boehmite, its appearance is white powder, and its molecular formula is γ-AlOOH. The important application value of boehmite is to prepare alumina powder which is widely used in industry after calcination. alumina products. Second, due to the comparison of molecular structure, boehmite can be regarded as aluminum hydroxide (Al(OH) 3 ) loses a molecule of water, so starting from boehmite, calcined to prepare alumina, the energy consumption is significantly lower than that of calcined aluminum hydroxide. To sum up, the first preparation of boehmite with different shapes is a shortcut to finally obtain alumina powders with corresponding shapes. Therefore, boehmite is also called the precursor of alumina. [0...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01F7/02
Inventor 吴秀勇
Owner TAISHAN MEDICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com