Method for improving oil absorption value by treating white carbon black through alcohols

A technology of white carbon black and oil absorption value, applied in the field of white carbon black preparation, can solve problems such as increasing production energy consumption, and achieve the effects of reducing energy and simplifying the production operation process.

Inactive Publication Date: 2017-05-10
冷水江三Ａ新材料科技有限公司
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned patents can obtain products with high DBP oil absorption value, during the synthesis process, it is necessary to mix the wet filter cake of silica with alcohols and then heat it, which increases the production energy consumption

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 for improving oil absorption value by treating white carbon black through alcohols
  • Method for improving oil absorption value by treating white carbon black through alcohols
  • Method for improving oil absorption value by treating white carbon black through alcohols

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1000 grams of pure water were injected into the reaction vessel. Get silicon dioxide concentration and be 700 grams of water glass solutions of 15 wt%, concentration is 300 grams of sulfuric acid of 20 wt%, add reaction vessel simultaneously; to 90°C. After co-current was completed, the reaction mixture was aged at 80° C. for 2 hours, the pH value of the system was adjusted to 2, and aged for another 3 hours. The obtained slurry is washed, and press-filtered into a wet filter cake with a solid content of 40%. According to the weight ratio of isobutanol: water is 1:1, add isobutanol and mix with the wet filter cake. The mixture is dispersed with an emulsifier for 30 minutes, and the speed of the emulsifier is 4000 rpm. After the dispersion is completed, the resulting slurry is spray-dried, and then pulverized by airflow to obtain a product with a particle size of 3-5 microns.

[0019] The physical and chemical properties of seven parallel samples are shown in Table 1:...

Embodiment 2

[0023] 1000 grams of pure water were injected into the reaction vessel. Get silicon dioxide concentration and be 525 grams of water glass solution of 20 wt%, concentration is 600 grams of sulfuric acid of 10 wt%, add reaction vessel simultaneously; to 90°C. After co-current was completed, the reaction mixture was aged at 80° C. for 5 hours, the pH value of the system was adjusted to 3, and aged for another 1 hour. Wash the obtained slurry, press filter to form a wet filter cake with a solid content of 30%. According to the weight ratio n-butanol: water 0.5:1, add n-butanol and mix with the wet filter cake. The mixture is dispersed with an emulsifier for 30 minutes, and the speed of the emulsifier is 9000 rpm. After the dispersion is completed, the resulting slurry is spray-dried, and then pulverized by airflow to obtain a product with a particle size of 3-5 microns.

[0024] The physical and chemical properties of seven parallel samples are shown in Table 2:

[0025] Table...

Embodiment 3

[0028] 1000 grams of pure water were injected into the reaction vessel. Get silicon dioxide concentration and be that 10 wt% water glass solution 1050 grams, concentration is 200 grams of sulfuric acid of 30 wt%, add reaction vessel simultaneously; The co-current pH value is 10, and the co-current reaction time is 1 hour, and the co-current reaction temperature to 70°C. After co-current was completed, the reaction mixture was aged at 60° C. for 4 hours, the pH value of the system was adjusted to 4, and aged for another 1 hour. The obtained slurry is washed, and press-filtered into a wet filter cake with a solid content of 40%. According to the weight ratio of isopropanol: water is 2:1, add isopropanol and mix with the wet filter cake. The mixture is dispersed with an emulsifier for 30 minutes, and the speed of the emulsifier is 8000 rpm. After the dispersion is completed, the resulting slurry is spray-dried, and then pulverized by airflow to obtain a product with a particle ...

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 relates to the technical field of preparation of white carbon black and in particular relates to a method for improving an oil absorption value DBP (Di-n-butyl Phthalate) of the white carbon black. The method comprises the following steps: after obtaining a white carbon black wet filter cake by a sodium silicate sulfuric acid precipitation method, adding one or more of n-butanol, isobutyl alcohol and isopropyl alcohol into the white carbon black wet filter cake at the weight ratio of an alcohol to water of (0.5 to 2) to 1 and treating; dispersing an obtained mixture through an emulsifying machine. Slurry obtained by dispersion is dried and crushed to obtain a white carbon black product with the DBP oil absorption value reaching 3.50g / g. According to the method provided by the invention, heating refluxing is not needed in the process; energy sources are extremely reduced and a production and operation process is simplified.

Description

technical field [0001] The invention relates to the technical field of white carbon black preparation, in particular to a method for increasing the oil absorption value DBP of white carbon black. [0002] technical background [0003] The void volume of silica depends on the degree of aggregation of its own silica primary particles, secondary particles and even tertiary particles. The larger the void volume of white carbon black, that is, the higher the structure degree, the higher the DBP oil absorption value. [0004] Chinese patent CN103466638A discloses a method for synthesizing white carbon black with high DBP oil absorption value. After the white carbon black wet filter cake is obtained by precipitation with glass sulfuric acid, it is dispersed in absolute ethanol, heated at 50-70°C for 1-5 hours while stirring, then suction filtered and dried to obtain a DBP oil absorption value of 3.00 g / g of silica products. [0005] Chinese patent CN104909373A also obtained the w...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/193
CPCC01B33/193C01P2004/61C01P2006/12C01P2006/14C01P2006/19
Inventor 胡颖妮胡湘仲胡伟民黄水波喻宁亚苏胜培
Owner 冷水江三Ａ新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap