High Quality Dust Free White and Colored Calcium Carbonate Chalk for Kids

As an ancient writing tool, chalk has become an indispensable presence in education, conferences, and public speeches due to its unique material, writing style, and cultural heritage. It witnesses the transmission of knowledge and the collision of wisdom, and also carries the emotions and culture of generation after generation. In the future, no matter how technology develops, chalk will continue to play its unique charm and value, contributing its own strength to the progress of human civilization.

Chalk has become a powerful assistant in the field of education due to its unique material and texture. It is made of limestone and after fine processing, it presents a smooth and hard surface. This material allows chalk to maintain stable friction and clarity during writing, with smooth and less blurry handwriting. At the same time, the writing effect of chalk also has a certain degree of durability, and can remain relatively clear even in damp or friction environments.

Dust free chalk adds trace amounts of chemical raw materials to the main ingredients, increasing the proportion. The chalk is written on the blackboard, without dust flying phenomenon, and is hygienic and clean, avoiding occupational diseases caused by chalk foam entering the internal organs through breathing. Add a small amount of smoothing agent and adhesive, the chalk should not touch hands and clothes, and the teacher should have no white marks on their fingers after a class, so there is no need to wash hands. Add a small amount of moisture-proof agent, which will not spoil when stored for a long time.

Dust free chalk is an improved product of ordinary chalk, aimed at eliminating classroom chalk dust pollution. It only adds oil or polyol substances as binders to ordinary chalk, and then adds fillers with higher density, such as clay, mudstone, cement, etc. This can increase the density and volume of chalk dust, making it difficult to fly away. However, in practical applications, its effect on reducing chalk dust pollution is not very obvious.

Chalk is a widely used stationery in daily life, usually used for writing on a blackboard. In ancient times, chalk was usually made from natural chalk, but nowadays it is often replaced with other substances. The main component of chalk is calcium sulfate, a white precipitate that is not easily decomposed and has larger particles than dust.