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Preparation method of oyster shell superfine powder

A technology of oyster shells and superfine powder, which is applied in grain processing, etc., can solve the problems of immature micropowder technology, achieve broad industrial, agricultural and medical value, simple operation, excellent adsorption and chemical activity

Active Publication Date: 2018-07-03
HAINAN MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology of deeply processing oyster shells into fine powders that can be easily absorbed by the human body is not yet mature.
In particular, there is no report on crushing oyster shells into superfine powders with a particle size of less than 10 μm by jet milling technology.

Method used

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  • Preparation method of oyster shell superfine powder
  • Preparation method of oyster shell superfine powder
  • Preparation method of oyster shell superfine powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] 1, a kind of preparation method of oyster shell superfine powder, it comprises the following steps:

[0061] (1) Pretreatment of oyster shells

[0062] Rinse the oyster shells with water, then select oyster shells with regular shapes and less dirt on the surface, rinse the selected oyster shells with water again, and after drying naturally, polish the outer layer of impurities, then dry naturally, and set aside;

[0063] (2) Processing of oyster shell fine powder

[0064] First crush the oyster shells pretreated in step (1) into fine pieces, then pulverize them into coarse powder with a pulverizer, dry them in a drying box, take them out and sieve them, then pulverize them in a universal pulverizer, and pass through 60, 80 , 100-mesh sieve, save for later use;

[0065] (3) Superfine grinding

[0066] Get step (2) and pass the oyster shell fine powder of 100 mesh sieves, adopt jet milling technology to carry out superfine pulverization, concrete process parameter is: ...

Embodiment 2

[0068] 1, a kind of preparation method of oyster shell superfine powder, it comprises the following steps:

[0069] (1) Pretreatment of oyster shells

[0070] Rinse the oyster shells with water, then select oyster shells with regular shapes and less dirt on the surface, rinse the selected oyster shells with water again, and after drying naturally, polish the outer layer of impurities, then dry naturally, and set aside;

[0071] (2) Processing of oyster shell fine powder

[0072] First crush the oyster shells pretreated in step (1) into fine pieces, then pulverize them into coarse powder with a pulverizer, dry them in a drying box, take them out and sieve them, then pulverize them in a universal pulverizer, and pass through 60, 80 , 100-mesh sieve, save for later use;

[0073] (3) Superfine grinding

[0074] Get step (2) and pass the oyster shell fine powder of 80 mesh sieves, adopt jet milling technology to carry out superfine pulverization, concrete process parameter is: f...

Embodiment 3

[0075] Embodiment 3 performance measurement

[0076] 1. Determination of powder specific surface area and porosity

[0077] Get respectively the oyster shell superfine powder 0.1g that embodiment 1 and embodiment 2 prepare, pack into measuring bottle respectively, be placed in the pretreatment system, under 150 ℃ of heating conditions, use N 2 Blow to a constant mass, put the sample in the ASAP2460 specific surface area and pore size analyzer, use the static adsorption equilibrium volume method to measure the gas adsorption isotherm of the powder, and then according to the determined adsorption isotherm data, according to BET, Langmuir, BJH, Multiple models such as HK, t-plot, MP and NLDFT are used to analyze the specific surface area, pore size distribution and pore volume of the powder. The BET specific surface area and the Langmuir specific surface area are based on N 2 Adsorption method is the core index to characterize the specific surface area of ​​a material. The larg...

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Abstract

The invention discloses a preparation method of oyster shell superfine powder. The preparation method comprises the steps of oyster shell pretreatment, oyster shell fine powder processing and superfine smashing carried out through the gas flow smashing technology. Through screening of a large number of experiments, the optimal gas flow smashing technology is screened out by adopting a matrix analysis method, technological parameters affecting the smashing effect are researched, and according to the preferentially-obtained optimal technology, the feeding granularity is 100 meshes, the feeding speed is 210 V, smashing pressure is 0.6 MPa, and the smashing number of times is 6. By means of the preparation method, oyster shells are deeply processed, waste is turned into wealth, the superficialarea and porosity of the processed oyster shell superfine powder are greatly improved, and the processed oyster shell superfine powder is better in solubility, dispersity, adsorbability and chemicalactivity and has the high industrial, agricultural and medical value.

Description

technical field [0001] The invention relates to a method for processing oysters, in particular to a method for preparing superfine powder of oyster shells, and belongs to the technical field of deep processing of marine products. Background technique [0002] Oyster is a delicious and nutritious seafood with a huge market consumption. The resulting oyster shells are piled up as waste in tidal flats and other places. The organic matter in them breeds a large number of pathogenic microorganisms after oxidation and corruption, which endangers the lives of residents and affects the environment. Cause serious pollution, so how to turn waste into wealth and effectively develop and utilize cheap oyster shell resources is an urgent problem to be solved. At present, many experts and scholars at home and abroad have conducted in-depth research and discussion on the special physical structure and material composition of oyster shells, and found that oyster shells are rich in calcium an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C19/06B02C23/14
CPCB02C19/0056B02C19/06B02C21/00B02C23/14B02C2201/06
Inventor 秦贞苗张俊清李海龙赖伟勇陈峰
Owner HAINAN MEDICAL COLLEGE