The crystalline form of talc is in layer structure, and tends to split into scales. In addition, talc has the properties of lubrication, viscosity resistance and so on. Ultra-fine talcum powder is made from natural minerals by mining. In addition, the talc stone has to go through coarse separation, fine separation, crushing, coarse grinding, air grinding and other processes.

Talcum powder is a white, flaky, natural mineral with high aspect ratio and inorganic inertness. It is widely used in engineering plastics such as polypropylene, polyamide and polycarbonate. Both talcum powder and calcium carbonate can be used as fillers to increase the stiffness, heat resistance and reduce the cost of materials. So what’s the difference between these two materials?

Talcum is flaky and has a higher stiffness, dimensional stability and heat resistance. Calcium carbonate is granular, and its performance in these areas is not as good as talcum powder. But the price of calcium carbonate is lower than talcum powder.

Talcum powder can be processed into different fineness. Here we take 325 mesh talcum powder and 1250 mesh talcum powder as an example. The difference between the talc with these two fineness is mainly reflected in particle size and distribution. Among them, 325 mesh talcum powder has larger particle size, 1250 mesh talc powder has smaller particle size and higher aggregation degree.

The influence of filler on the mechanical properties of filler system varies with the particle size and aggregation morphology of filler. The filler with smaller particle size will bring higher tensile strength, while the filler with larger particle size will give the material higher elongation at break.

As for 325 mesh talcum powder, we suggest the Raymond mill for you. Talc Raymond mill can completely make the powder reach such fineness while guarantee the relatively low cost during the production process. Some customers may want to get the 1250 mesh talcum powder. This also can be achieved by using our talc ultra-fine grinding machine. This talc grinding machine is very popular in the market now.

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