Three major trends in the development of heavy calcium carbonate industrial technology
Heavy calcium carbonate is ground from natural carbonate minerals such as calcite, marble, limestone, etc. It is an important non-metallic mineral material that is environmentally friendly, energy-saving and emission-reducing, and conforms to the country’s sustainable development. It has obvious reinforcing and whitening effects. And the advantages of impact resistance, easy processing, non-toxic, harmless and low cost.
The heavy calcium carbonate industry has developed rapidly in China and has become an important industry in the non-metallic mining industry. In the past 10 years, the world’s annual production capacity of heavy calcium carbonate has grown at an average growth rate of 5% to 8%, while the average annual growth rate of China’s heavy calcium carbonate can reach 10%.
On the whole, the main development trend of heavy calcium carbonate industrial technology is large-scale, functional and intelligent. This is the intensification, stabilization, structural optimization or specialization of heavy calcium carbonate production, as well as improving production efficiency and reducing energy consumption. , Abrasion and the inevitable requirements of reducing production costs are also inevitable requirements for the development of production technology for the significant increase in market demand and the saving of the amount of resin in polymer-based composite materials.
- Large-scale
Large-scale production mainly means that the production capacity of a single production line will continue to increase. The large-scale production line will drive the development of large-scale crushing equipment, large-scale classification equipment (especially dry fine classification equipment), surface modification equipment (especially continuous surface modification equipment) and corresponding drying and packaging equipment. Starting from the end of the “Twelfth Five-Year Plan”, China will build more and more single heavy calcium carbonate and superfine heavy calcium carbonate production lines with an annual output of more than 200,000 tons, and a single dry surface modification with an annual output of more than 50,000 tons. Sexually activated heavy calcium carbonate and superfine heavy calcium carbonate production line.
- Functionalization
Functionalization means that the application performance of the product will be continuously optimized to meet the needs of the market, and it is a value-added technology that enhances the application performance and value of heavy calcium carbonate. The main processing technology to improve the functionality of heavy calcium carbonate products is surface modification and fine grading.
Surface modification reduces the oil absorption value of the product, improves the compatibility of heavy calcium carbonate with organic resin and the dispersibility in the resin, can increase the filling amount of heavy calcium carbonate and reduce or save the filling of polymer materials The amount of resin has huge market demand and is one of the main production technologies for special heavy calcium carbonate products.
Fine grading technology can improve the application performance of heavy calcium carbonate in inks, coatings and other fields. It is one of the important production technologies for special heavy calcium carbonate products.
- Intelligent
Intelligentization refers to the optimization of production management and control. The intelligentization of production line control will be one of the main development trends of calcium carbonate production technology in the future. Large-scale production and increased requirements for reliable and stable product quality, rising labor costs and scarcity of skilled workers will promote the continuous development of intelligent control of heavy calcium carbonate production lines.