Our factory is located in Haicheng City, Liaoning Province, specializing in producing Liaoning Dolomite Powder: 200 mesh, 325 mesh, 400 mesh, 600 mesh, 800 mesh, 1250 mesh, 1500 mesh, and 2000 mesh. The product features good brightness and uniform particle fineness.

Heavy calcium carbonate powder, commonly referred to as "heavy calcium," is a white powder produced by processing calcite, which is primarily composed of calcium carbonate, or raw materials such as marble and dolomite, through large ultra-fine grinding equipment. Depending on the product's purpose and its role within the product, today, I will discuss the uses and general functions of heavy calcium powder.

1. Calcium Carbonate Powder for Rubber Industry - 400 Mesh, Whitening: 93%, Calcium Carbonate Content: 96%. When used as a filler in rubber, it enhances product volume, allowing for a reduction in the amount of natural rubber needed, thereby lowering production costs. Calcium carbonate-filled rubber exhibits higher tensile strength, tear resistance, and wear resistance compared to pure rubber vulcanizates.

2. Plastic industry uses heavy calcium powder plastic masterbatch and color masterbatch with heavy calcium carbonate powder (heavy calcium powder) at 400 mesh. It requires that the whiteness remains unchanged after high-temperature heating, with the ore structure being large crystal calcite. The calcium carbonate content is 98%, and the whiteness is 95%. Calcium carbonate can act as a skeletal role in plastic products, contributing to dimensional stability and improving the hardness of the products. It also enhances the surface luster and flatness. Moreover, due to the high whiteness of calcium carbonate above 90%, it can reduce the amount of certain white pigments used.

3. In the paint industry, heavy calcium powder is used in oil-based paints and latex paints with 800 or 1000 mesh heavy calcium carbonate (heavy calcium powder), with a whiteness of 95 and calcium carbonate content of 96. The usage of calcium carbonate is also significant in the paint industry, such as in thick paints where the amount exceeds 30, which can enhance the product's effects.

4. The heavy calcium powder used in the water-based paint industry is a high-purity calcium carbonate (heavy calcium powder) with a mesh size of 800 or 1000, featuring a whiteness of 95% and a calcium carbonate content of 96%. Its application in the water-based paint industry allows for slow sedimentation, easy dispersion, and a good luster, with an approximate usage of 20-60% in water-based paints.

5. The papermaking industry utilizes heavy calcium powder, a high-quality calcium carbonate (heavy calcium powder) with a mesh size of 325, with a brightness requirement of 95 and a calcium carbonate content of 98%. The crucial role of calcium carbonate in the papermaking industry is highlighted. It can effectively enhance the strength and brightness of paper while maintaining a low cost for the product.

6. In the construction industry (dry powder mortar, concrete), heavy calcium powder is used in dry powder mortar with a 325 mesh grade, with a whiteness requirement of 93% and a calcium carbonate content of 98%. Calcium carbonate plays a crucial role in concrete within the construction industry, as it not only reduces production costs but also enhances the product's toughness and strength.

7. The fire-resistant ceiling industry utilizes heavy calcium carbonate (heavy calcium powder) with a 600-mesh particle size for fire-resistant ceilings. The required purity is 95% for whiteness and 98.5% for calcium carbonate content. Calcium carbonate is essential in the production process of fire-resistant ceilings, enhancing the product's brightness and white appearance, while also improving its fire resistance.

8. In the artificial marble industry, the use of heavy calcium powder in artificial marble involves a 325 mesh heavy calcium carbonate (heavy calcium powder). The required whiteness is 95, with a calcium carbonate content of 98.5. The product must be free of obvious impurities, and the whiteness and fineness must be uniformly controlled without particles. The use of calcium carbonate in the production of artificial marble is very common at present.

9. In the tile industry, heavy calcium powder is used for tiles, requiring a 400 mesh heavy calcium carbonate (heavy calcium powder) with a whiteness of 95% and a calcium carbonate content of 98.5%. It must be pure and free of impurities. Calcium carbonate can be applied in the tile industry to enhance product whiteness and tensile strength, improve certain toughness, and appropriately reduce production costs.

10. The feed industry utilizes heavy calcium powder, specifically heavy calcium carbonate (heavy calcium powder) with a 325 mesh size, requiring a whiteness of 95 and a calcium carbonate content of 99. The product must be free of noticeable impurities. The appropriate addition of calcium carbonate can boost the calcium content in feed, enhance certain performance attributes of feed products, and can also moderately reduce production costs.