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The average primary particle size of superfine calcium carbonate should be 0.02–0.1 μm. This is a basic requirement. Otherwise, it cannot be called “ultrafine.” However, this is only half the task. If surface treatment and dispersion technology are insufficient, the primary particles will agglomerate into secondary particles hundreds of nanometers in diameter. Transmission electron microscopy

In the vast world of chemical raw materials, there is a seemingly ordinary yet highly powerful material that is quietly transforming the manufacturing processes and product performance of multiple industries. This material is modified calcium carbonate. After surface activation treatment, modified calcium carbonate is no longer just a simple filler but has become a key

Active calcium carbonate, through surface activation and modification, has evolved from a basic filler into a multifunctional material. It significantly enhances the performance and efficiency of industries such as rubber, plastics, papermaking, coatings, and building materials, while drastically reducing costs. It has become a secret weapon for the green development of manufacturing industries. In the

Calcium carbonate is the most commonly used inorganic powder fillers. It is inexpensive, abundant, non-toxic, and odorless. It has a whiteness of up to 96%, can be easily colored, and has excellent chemical stability. It is easy to dry and widely used in many plastics. Calcium Carbonate There are three kinds of powder fillers of

Limestone is a key raw material for the production of cement, concrete aggregates, and lime. Its crushing and grinding generally follow a dry process. The process varies based on the specific application. For limestone used in metallurgy and road construction, the material is typically crushed and screened. For limestone used as a feed additive or

Currently, the amount of fillers and pigments used in papermaking ranks second only to fiber as one of the most important raw materials. Common papermaking fillers include calcium carbonate, talc, kaolin, wollastonite, bentonite, and others. As the acidic papermaking process gradually shifts towards neutral and alkaline processes, calcium carbonate, as an important raw material in

The limestone grinding process involves mining, crushing, and processing natural limestone ore into industrial raw materials of various specifications. It is widely applied in construction, building materials, chemicals, and metallurgy. Limestone Characteristics and Applications Chemical composition: Mainly calcium carbonate (CaCO₃), with small amounts of magnesium oxide, silica, and other impurities. Main applications: Limestone Mining Process