I. The Micron World of Ultrafine Powder 

The fineness of calcium carbonate ultrafine powder usually ranges from 1 to 10 micrometers, which is equivalent to 1/70 to 1/7 of the diameter of a hair. This level of fineness gives the powder unique physical properties: 

The texture is as smooth as silk, without any obvious graininess. 

A slight suspension phenomenon can be observed under natural light. 

The specific surface area can be more than 50 times that of ordinary powders. 

II. Industry-specific detailed encryption 

Different fields have different requirements for the fineness of calcium carbonate: 

Plastics industry: Prefer 3-5 microns, which can be evenly dispersed without affecting strength 

Coating field: Require 1-3 microns, ensuring the coating is smooth without any particles. 

Food additives: Strictly controlled within the range of 5-8 micrometers, taking into account both solubility and taste. 

III. The Magical Effects Caused by Fineness 

When calcium carbonate reaches an ultra-fine state, it undergoes three remarkable transformations: 

Chemical reaction: Activity increases, becoming raw material for environmentally friendly desulfurization agents 

Bioavailability: The absorption rate in the human body has been enhanced, making it more effective for use in calcium supplements.