What is light calcium carbonate
Among the hot topics on the Internet in the past 10 days, discussions related to environmentally friendly materials, chemical products and industrial additives have remained hot. Among them, light calcium carbonate, as an important industrial raw material, has become the focus of many industries due to its wide range of applications and environmental protection properties. This article will introduce in detail the definition, characteristics, production process, application fields and market data of light calcium carbonate to help readers fully understand this material.
1. Definition and characteristics of light calcium carbonate
Light Calcium Carbonate, also known as precipitated calcium carbonate, is a white powdery inorganic compound synthesized by chemical methods. Its chemical formula is CaCO₃, which has the same chemical composition as natural calcium carbonate, but there are significant differences in physical properties and production processes. Light calcium carbonate has the following main properties:
| characteristic | describe |
|---|---|
| Appearance | White powder, tasteless and odorless |
| density | 2.6-2.9 g/cm³ |
| particle size | 0.5-15 micron |
| Solubility | Almost insoluble in water, soluble in acid |
| pH value | 8-10 (neutral to alkaline) |
2. Production process of light calcium carbonate
The production of light calcium carbonate is mainly completed by carbonization method. The specific steps are as follows:
1.limestone calcined: Limestone (CaCO₃) is calcined at high temperature to produce quicklime (CaO) and carbon dioxide (CO₂).
2.digestive reaction: React quicklime with water to generate calcium hydroxide (Ca(OH)₂) slurry.
3.carbonization reaction: Pour carbon dioxide into the calcium hydroxide slurry to generate calcium carbonate precipitation.
4.Dehydration and drying: Dehydrate, dry and pulverize the sediment to obtain the finished product of light calcium carbonate.
3. Application fields of light calcium carbonate
Light calcium carbonate is widely used in the following industries due to its excellent physical and chemical properties:
| Application areas | Specific use |
|---|---|
| plastic industry | As a filler to improve the hardness and heat resistance of plastic products |
| Rubber industry | Enhance the tensile strength and wear resistance of rubber |
| paper industry | As a filler and coating material to improve paper whiteness and smoothness |
| Paint industry | Increase the hiding power and leveling of paint |
| Building materials industry | Used in the production of ceramic tiles, sealants, etc. |
| food industry | As a food additive (E170), used to supplement calcium or adjust pH value |
4. Market data of light calcium carbonate
According to recent market research data, the global light calcium carbonate market shows a stable growth trend:
| index | data |
|---|---|
| Global Market Size (2023) | Approximately US$8.5 billion |
| Estimated annual growth rate (2024-2030) | 5.2% |
| Main production areas | China, United States, Europe |
| China market share | Approximately 35% of the world’s |
| Proportion of main application areas | Plastic (35%), paper (25%), rubber (20%) |
5. The difference between light calcium carbonate and heavy calcium carbonate
Although light calcium carbonate and heavy calcium carbonate have the same chemical composition, they differ significantly in several aspects:
| Compare items | Light calcium carbonate | heavy calcium carbonate |
|---|---|---|
| production method | chemical synthesis | Mechanical crushing |
| particle shape | Regular, mostly spindle-shaped | Irregular, many edges and corners |
| Particle size | 0.5-15 micron | 1-45 micron |
| Oil absorption value | higher | lower |
| price | higher | lower |
6. Development Trend of Light Calcium Carbonate
With the improvement of environmental protection requirements and technological advancement, the light calcium carbonate industry has shown the following development trends:
1.Nanoscale product development: Nano-calcium carbonate with finer particle size has better reinforcing effect and has become the focus of research and development.
2.Surface modification technology: Improve compatibility with various substrates through surface treatment.
3.Green production process: Reduce energy consumption and emissions and improve resource utilization.
4.Expansion of application fields: Application exploration in new energy batteries, biomedicine and other emerging fields.
In short, as an important industrial raw material, light calcium carbonate has broad application prospects. With technological advancement and changes in market demand, light calcium carbonate products will continue to be upgraded to provide better solutions for various industries.
check the details
check the details
en
