The relationship between gray calcium powder, light calcium and nano calcium carbonate
Speaking of decoration, what do you think of? Is it a simple and atmospheric layout? A magnificent chandelier? Or is it high-end and atmospheric furniture? I don’t know if anyone is like me, thinking of all kinds of walls. From rough and dim cement to smooth and beautiful walls, it can be said to turn decay into magic.
Those who have renovated should know that putty powder is indispensable for wall treatment. It is a kind of base material used for wall repair and leveling, and can lay a good foundation for the next step of decoration (painting and pasting wallpaper), and putty The main ingredients in the powder include gray calcium powder and calcium carbonate. Today, we will talk about three materials that are inseparable from calcium carbonate, gray calcium powder, light calcium, and nano-calcium carbonate.
About raw materials
CaCO3 is commonly known as graystone, limestone, stone powder, marble, etc., and its scientific name is calcium carbonate. It is an inorganic compound, the main component is calcite, which is white solid, tasteless and odorless, and has two forms: amorphous and crystalline.
CaO, commonly known as quicklime, scientific name calcium oxide, is an inorganic compound. The surface is white powder, the impure ones are off-white, when it contains impurities, it will be light yellow or gray, and it is hygroscopic.
Ca(OH)2 is commonly known as slaked lime, slaked lime, scientific name calcium hydroxide, is a white powdery solid. After adding water, there are two upper and lower layers. The upper aqueous solution is called clarified lime water, and the lower suspension is called lime milk or lime slurry. It has alkali properties and is corrosive to skin and fabrics.
About the production area of calcium carbonate
The main production areas of calcium carbonate in China are Baoxing Heavy Calcium, Wenchuan Jiangyou Heavy Calcium, Dujiangyan Mianzhu Light Calcium, Chizhou City in Anhui Province, Quzhou City in Zhejiang Province, Lianzhou City in Guangdong Province, and Hezhou City in Guangxi Province.
About comparison
| Gray calcium powder | Light calcium | Nano calcium carbonate | |
| Alias | – | Light calcium carbonate, precipitated calcium carbonate | Ultra (fine) calcium carbonate |
| Main ingredients | Mixture of Ca(OH)2, CaO and a small amount of CaCO3 | CaCO3 and a small amount of Fe, Mn | CaCO3 |
| Raw materials | CaCO3 | CaCO3 | CaCO3 |
| Apparent | White and delicate | Fully dispersed into a jujube core shape | Exquisite and bright appearance |
| The main purpose | Putty powder has a bonding effect, and can achieve the effect of waterproof and water resistance. | Filler, as a filler, can increase the volume of the product and reduce the production cost. | Pigment filler, calcium supplement, high purity, good whiteness, fine particle size, can replace titanium dioxide. |
About the relationship between the three
The raw materials of gray calcium powder, light calcium and nano calcium carbonate are limestone (CaCO3), which are prepared through different processes. The preparation process is complicated: nano calcium carbonate> light calcium> gray calcium powder
About the application
- Gray calcium powder is often used in putty powder, architectural coatings, latex paint, thermal insulation mortar, wires and cables, plastic steel doors and windows, flue gas desulfurization, and sewage treatment.
- Light calcium is often used in rubber, plastics, papermaking, metallurgy, glass production, and asbestos production.
- Nano calcium carbonate is often used in chemical building materials, inks, coatings, sealants, and adhesives.
About development
- Gray calcium powder
Gray calcium powder is easy to cause white pollution in the production process, but the green products produced are a contradiction. To solve this contradiction, improve equipment, and work hard to eliminate white pollution, gray calcium products will have long-term development.
- Light calcium
Light calcium is artificially synthesized, and its crystal form and composition are easy to control, so it can endow light calcium with a variety of functions. The relatively high specific surface makes the powder better in the coating. Mainly used for anti-corrosion coatings. In addition to being used as fillers, ultra-fine light calcium also has a certain degree of water resistance and corrosion inhibition.
- Nano calcium carbonate
Industrialization has been achieved in China, with increasing scale, increasing output, and expanding application fields, from rubber, ink and other industries to plastics, coatings, adhesives, paper and other industries, and the demand is increasing at an annual rate of 20%. , High-end products continue to be put on the market, meeting the increasing demands of the two major markets at home and abroad.
Summary
Nowadays, functional calcium carbonate has become a major demand point in the calcium carbonate application market. In the face of market demand, different users have different requirements for products. In addition to the product’s calcium carbonate particle size, but also product performance and quality, a variety of functionalized special calcium products can have stronger market competitiveness. Therefore, more efforts can be made on the application performance of nano-scale calcium carbonate, and more functional and special-purpose nano-calcium carbonate can be developed. The same is true for the functional development of other inorganic powder materials.
Article source: China Powder Network