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Method for preparing nanometer level pearli powder

A pearl powder and nano-scale technology, which is applied in the field of ultrafine preparation of pearl powder, can solve the problems of high energy consumption, undeveloped ultramicro production technology, and high production cost, and achieve low energy consumption, low production cost, and high utilization rate. Effect

Inactive Publication Date: 2002-06-05
ZHEJIANG UNIV +1
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Problems solved by technology

However, the average particle size of these ultrafine pearl powders is still in the micron range, generally around 3-8 μm, and the energy consumption in the processing process is very large, and the production cost is relatively high.
However, the ultra-micro production technology that the average particle size of pearl powder reaches the nanometer level has not yet been developed.

Method used

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  • Method for preparing nanometer level pearli powder
  • Method for preparing nanometer level pearli powder

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Experimental program
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Embodiment

[0018] With the lactic acid aqueous solution of concentration (by weight) 2.5%, pearl is stirred and dissolved, and the pearl powder solution that obtains concentration (by weight) is 2.5%, and sodium bicarbonate (NaHCO 3 ) adjust the above solution to pH = 7, and after standing at 5°C for 24 hours, the pearl powder colloid is obtained, so that the size of the pearl powder reaches nanoscale. The pearl powder colloid is sprayed in a drying room at a temperature of 100° C. by adopting a centrifugal spray drying method, so that the pearl colloid is rapidly dried and granulated to produce pearl powder with a particle size of 90-100 nm. Adopt the nano-scale pearl powder that the inventive method makes as shown in Figure 1, outward appearance is spherical and ellipsoid.

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Abstract

A preparation process of nanometer level pearl powder includes dissolving pearl in aqueous lactic acid solution, regulating the solution pH value to neutrlity, making the aqueous lactic acid solution into colloid with pearl powder in nanometer level, spray-drying the colloid, and solidifying and pellectizing to produce spherical pearl powder with average size of 90-100 nm. The prepared pearl powder has various amino acids, trace elements and other nutritive components in pearl maintained and calcium carbonate in pearl is converted into active calcium easy to be absorbed by human body. The method has high efficiency, low power consumption and low production cost, and is suitable for industrial production of medicines and health products.

Description

technical field [0001] The invention relates to an ultrafine preparation method of pearl powder. Background technique [0002] Modern scientific analysis shows that pearls contain more than 20 kinds of amino acids, trace elements, protein and a large amount of calcium needed by the human body. However, pearls have a hard concentric lamination structure, and it is quite difficult to process them into powder. The traditional processing method is usually to boil the pearls in water for several times until it softens, and then grind them in water; or directly add water to the pearls and crush them with a general coarse crusher, then use a ball mill to crush them with water and then dry them. . Because pearls are boiled in water for a long time, the nutrients in pearls are destroyed or dissolved. After testing, there are generally only 3 to 6 kinds of amino acids. At the same time, the average particle size of the product is large, mostly above 15 microns. The absorption rate ...

Claims

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Application Information

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IPC IPC(8): A61K9/14A61K35/618
Inventor 涂江平沈志荣张文魁杨安全郑锦锤
Owner ZHEJIANG UNIV
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