Preparation method of acid-modified superfine shell powder and product

A shell powder, acid modification technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problems of complex production process, few applications, high cost, and achieve the effects of good surface activity, simple process and sufficient raw materials

Inactive Publication Date: 2013-05-01
ZHEJIANG UNIV
View PDF6 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical synthesis method is a powder prepared from ions, atoms and molecules through the formation of crystal nuclei and crystal growth through chemical reactions and phase transitions. Due to the complex production process, high cost, and low yield, the chemical synthesis method There are not many applications in the preparation of ultrafine powders

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
  • Preparation method of acid-modified superfine shell powder and product
  • Preparation method of acid-modified superfine shell powder and product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Soak the mussel shell raw material in 4% alkali hydroxide for 24 hours at a temperature of 80° C. to remove the cuticle, and wash it with water until neutral to obtain the shell with the cuticle, and then divide the weight of the shell equivalent to the cuticle 80% of the water was added into the ball mill, and the ball mill was stirred for 48 hours to obtain a slurry;

[0032] 2) Slowly add 10% concentrated hydrochloric acid, which is equivalent to 25% of the exfoliated shell weight, to the slurry several times, stirring constantly, and the reaction time is 6 hours;

[0033] 3) Washing the acid-modified shell micropowder slurry, press filtering, drying and pulverizing to obtain modified shell powder with a particle size of 0.5-5 μm;

[0034] 4) Add 20% pure water equivalent to the weight of the modified shell powder to the modified shell powder, and adjust it into a paste, and then use the planetary ball mill to grind it, dry and grind it to obtain superfine powder ...

Embodiment 2

[0036] 1) Soak the mussel shell raw material in 0.1% alkali hydroxide for 24 hours at a temperature of 20° C. to remove the cuticle, and wash with water until neutral to obtain a shell with the cuticle, and then put the shell equivalent to the cuticle by 20 % of water was added to the ball mill, and the ball mill was stirred for 6 hours to obtain a slurry;

[0037] 2) Slowly add sulfuric acid of 1% concentration, which is equivalent to 5% of the exfoliated shell weight, to the slurry several times, stir constantly, and the reaction time is 0.5h;

[0038] 3) Washing the acid-modified shell micropowder slurry, press filtering, drying and pulverizing to obtain modified shell powder with a particle size of 0.5-5 μm;

[0039] 4) Add 5% pure water equivalent to the weight of the modified shell powder into the modified shell powder, and adjust it into a paste, and then use the planetary ball mill to process it, dry and grind it to obtain superfine powder with a particle size of 0.01-...

Embodiment 3

[0041] 1) Soak the scallop shell raw material in 10% alkali hydroxide for 24 hours at a temperature of 20° C. to remove the cuticle, and wash with water until neutral to obtain a shell with the cuticle, and then 80 % of water was added to the ball mill, and the ball mill was stirred for 48 hours to obtain a slurry;

[0042] 2) Slowly add 10% formic acid with a concentration of 25% to the weight of exfoliated shells into the slurry several times, stir constantly, and the reaction time is 6 hours;

[0043] 3) Washing the acid-modified shell micropowder slurry, press filtering, drying and pulverizing to obtain modified shell powder with a particle size of 0.5-5 μm;

[0044] 4) Add 10% pure water equivalent to the weight of the modified shell powder to the modified shell powder, and adjust it into a paste, and then use the planetary ball milling method to process, dry and pulverize to obtain superfine powder with a particle size of 0.01-5 μm shell powder.

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of acid-modified superfine shell powder. The preparation method is characterized by comprising the following steps: 1) removing the cuticle of a shell raw material, and then adding water accounting for 20-80% of the weight of the shell subjected to cuticle removal, and stirring for 6 to 48 h to prepare slurry; 2), adding acid liquor accounting for 5-25% of the weight of the shell subjected to cuticle removal in the slurry, and stirring to obtain acid-modified shell micro powder slurry; 3), carrying out washing, filter pressing, drying and grinding on the acid-modified shell micro powder slurry to obtain modified shell powder with the particle size of 0.5-5 microns; and 4), adding purified water in the modified shell powder obtained from the steps 3), mixing into paste, and then adopting a planetary ball milling and grinding method to process, dry and crush to obtain the superfine shell powder with the particle size of 0.01-5 microns. The invention further discloses acid-modified superfine shell powder prepared by the method. The preparation method and the product are simple in process, small in equipment investment and low in energy consumption. Besides, the prepared modified shell micro powder is good in surface activity.

Description

technical field [0001] The invention relates to the field of shell utilization, in particular to a preparation method and product of acid-modified superfine shell powder. Background technique [0002] Shell powder is the powder of crushed shells. It can be used as a high-grade material for food, cosmetics, and interior decoration. It is widely used in animal feed and food calcium source additives, high-grade decorative coatings, jewelry processing, and desiccants. [0003] There are many methods for the preparation of ultrafine powder, but there are mainly two types of preparation methods: one is chemical synthesis, and the other is physical pulverization. The chemical synthesis method is a powder prepared from ions, atoms and molecules through the formation of crystal nuclei and crystal growth through chemical reactions and phase transitions. Due to the complex production process, high cost, and low yield, the chemical synthesis method There are not many applications in th...

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): C01F11/18
Inventor 陈涛夏枚生朱振宏金诗迪殷天雅
Owner ZHEJIANG UNIV
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