What is the difference between different specifications of calcium carbonate

Release time:

2024-01-29 09:34

Calcium carbonate is one of the most commonly used non-metallic minerals in the chemical industry. There are many kinds of calcium carbonate, common calcium carbonate and nano calcium carbonate. Different calcium carbonate has different specifications, so what is the difference between different mesh calcium carbonate.



1. From the name:

There are different names for ordinary grade calcium carbonate and nanoscale calcium carbonate.

2. From the appearance:

When rubbing nano-calcium carbonate by hand, the hand-feeling particles are fine and smooth, with strong adhesion, and the powder on the hand is difficult to rinse clean, while ordinary active calcium carbonate does not have this situation.

3, from the bulk density:

The bulk density of nano-active calcium carbonate is less than that of ordinary active calcium carbonate, the former is generally 0.3~0.5g/cm3, and the latter is generally 0.5~0.7g/cm3.

4. From the point of view of particle size:

When the particle size range is> 1000nm, it is ordinary grade calcium carbonate; when the particle size is between 100 ~ 1000nm, it is fine calcium carbonate; when the particle size range is 20 ~ 100nm, it is ultrafine calcium carbonate; when the particle size of calcium carbonate is <20nm, it is ultra fine calcium carbonate. In general, superfine calcium carbonate and superfine calcium carbonate are also known as nano calcium carbonate.



5. From the perspective of crystal form:

The crystal shape of nano-scale calcium carbonate products is mainly cube, which can produce chain shape when the particle size is small, while the ordinary active light calcium carbonate is mainly spindle-shaped, or agglomerated into chrysanthemum-like crystals;

6, from the use point of view:

400 mesh to 800 mesh: used for toothpaste, soap, rubber, plastic, cable, PVC, whiteness above 94 degrees.

1250 items: PVC, PE, paint, coating grade products, paper primer, paper surface coating, whiteness above 95 degrees. With high purity, high whiteness, non-toxic, odorless, fine oil low, low hardness.

Nano calcium carbonate: 80-100nm: pigment filler, calcium supplement agent, high purity, good whiteness, fine particle size, can replace titanium dioxide.

7, from the price point of view

Different mesh prices are different, the finer the powder, the higher the whiteness, the more expensive the price, and the price will be affected by the market situation, there is a certain fluctuation.

8, from the point of view of processing technology

Ordinary calcium carbonate: calcite, etc.-crushing-powder (fineness according to customer needs)-finished products

Nano calcium carbonate: The production process is divided into five sections: raw material preparation section-calcination-gas washing section-digestion-pulping section-carbonization-activation section-dehydration-drying-packaging section.

Calcium carbonate, particle size, look, ordinary, workshop section, different, nano, price, activity

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