Precipitated Calcium Carbonate Plant
Customize your PCC plants with cutting-edge engineering designs.
Production Capacity: customized based on your needs
Powder Fineness: general grade, food grade, pharmaceutical grade, or nano grade
Raw Material: Calcite, marble, limestone and other natural carbonate minerals
The precipitated calcium carbonate plant, often called the PCC plant, is designed to manufacture precipitated calcium carbonate with highly efficient, energy-saving, environmentally friendly, and extremely intelligent solutions. The final product is a useful additive widely used in the fields of plastics, papermaking, rubber, coatings, medicine, food, etc. It is an inorganic chemical product made from materials like calcite, marble, limestone, and chalk through a series of chemical reactions.
PCC plant with high-end final particles
Our PCC plant can manufacture precipitated calcium carbonate with a high grade of whiteness and ultra-fine particles, enabling outstanding performance in intense market competition.
Since precipitated calcium carbonate is used for different purposes, it needs to be made in various particle sizes. Correspondingly, the demand for PCC plants is different. Interested in building a calcium carbonate plant? Our team can lend a hand in every aspect of the project to deliver the solution you require.
Energy saving
Highly efficient
environmentally friendly
highly intelligent
Technical support
CNBM
SINOMA-Zibo is a subsidiary company of Tianjin Cement Design & Research Institute Co., Ltd., which belongs to the parent company CNBM (China National Building Material Group Co., Ltd.), a top 500 company in the world. The one-stop solution for PCC plants covers free consulting, free design, solution delivery, installation guides, and after-sales services. Customers worldwide have long recognized our turnkey solutions in the cement and lime industries.
Free Consulting
Free Design
Solution Delivery
Installation Guide
After-Sale Service
optimized PCC production solutions
We design the PCC plants using carefully selected machines and an optimized manufacturing process, ensuring energy-saving effects and exceptional final products. We focus on improving the automation degree of the production, as well as the environmentally friendly solutions.
rich engineering experience
We have gained valuable experience from numerous successful cases in the past. Our engineering team provides tailor-made plans to meet specific production requirements. Integrated solutions cover not only PCC plants but also GCC plants (ground calcium carbonate plants).
Core advantages of the PCC plant from CNBM
capacity compatibility and process matching Capabilities
Our design for the production capacity is compatible with the raw material property, end-use of product, and production scenarios. The distinguished production process meets the varied production capacity.
precise carbonation reaction system
Particle size, crystal shape, and specific surface area can be adjusted by controlling CO₂ concentration, reaction temperature, pH level, and reaction duration. The carbonization system can produce products meeting the needs of different applications.
Improvements of core production equipment
The inner wall of the slaker is coated with a ceramic wear-resistant layer, which extends the equipment’s lifespan to over five years. The grinding mills, especially the vertical mill, have been upgraded and have demonstrated their leading position in China in terms of energy savings.
Intelligent automated control
Mechanical automatic control, PLC automatic control, and online monitoring intelligent control—three modes are available. The production process is in control and stable. The end product is homogeneous and can save long-term running costs.
Low-energy and environmentally friendly design
The production equipment has an advanced structure, taking less space, requiring less maintenance, producing low noise, and being environmentally friendly. The optimization of the water cycle can reduce steam consumption by 20–30% during the drying process.
Consistent and controllable product indicators
Important metrics, such as moisture content, whiteness, and particle size distribution, are well controlled in the reaction and classification process. It guarantees that the product has constant quality and homogeneous particle size for applications such as coatings, plastics, and papermaking.
precipitated calcium carbonate manufacturing process
calcination
Limestone is heated in a lime kiln at temperatures above 900°C. It breaks down into calcium oxide and carbon dioxide. The reaction equation: CaCO₃ → CaO + CO₂↑
slaking
Add water to the calcium oxide (quicklime) to generate calcium hydroxide, also known as “slaked lime.” Reaction equation: CaO + H₂O → Ca(OH)₂ + heat
carbonation
Carbonation is the core step of precipitation. Introduce carbon dioxide gas into lime milk. The calcium hydroxide reacts with CO₂ to form a solid calcium carbonate precipitate. The reaction equation: Ca(OH)₂ + CO₂ → CaCO₃↓ + H₂O
filtration
The calcium carbonate slurry is dewatered using a filter press to obtain a wet filter cake, which is washed several times to remove the impurities.
Drying
The calcium carbonate cake is dried to remove as much moisture as possible.
Griding and grading
The dried calcium carbonate powder is usually too coarse, which needs to be ground by ball mills or similar machines to get finer particles, such as micrometers or even submicrometers.
Finally, the powder needs to be graded. Using airflow or centrifugal grading tools to sort the particles by size. The desired precipitated calcium carbonate has a consistent size distribution and greater activity.
Key Equipment in PCC Plants
- Stone Crushers: Crushing limestone to the proper particle size.
- Lime kiln: Calcine the limestone to obtain calcium oxide.
- Slaking Machine: Reacting quicklime with water to produce a calcium hydroxide slurry.
- Carbonator: Control the particle size and morphology of calcium carbonate by adjusting the carbon dioxide quantity and lime milk concentration.
- Drying Equipment: Eliminates moisture and lowers the water content to satisfy application and storage needs.
- Grinding Machine: Grinding precipitated calcium carbonate to a finer particle size. Ensures that the final product satisfies target fineness requirements.
Recent Cases
Equipment Selection Guide based on PCC application
In plastic products, the use of precipitated calcium carbonate can enhance the surface smoothness and color brightness of the products. In inks and coatings, it improves the covering power and the uniformity of application. In papermaking, it not only improves the whiteness of the paper but also enhances the ink absorption and printing adaptability.
The Plastics Industry
PCC with high dispersion is required in the plastic industry. It is suggested to use a dynamic grading system, ensuring the particle size deviation is below 20%.
The Rubber Industry
The rubber industry focuses on the reinforcement of PCC. We recommend that you set up equipment that applies surface modification in the monitoring system.
coating Industry
A low oil absorption is necessary in the coating industry. You can add a surface treatment link following the ultrafine grinding process.
Precipitated calcium plant cost
The initial investment for a PCC plant with an annual output of 50,000 tons is about 15,000,000 to 20,000,000 RMB. To make the most out of your investment, you’d better pay attention to daily maintenance.
- Regularly clean the scale formation inside the carbonator. Citric acid cleaning is a beneficial method that is recommended.
- The bearing of grinding mills needs to be controlled at a temperature below 75℃, avoiding impact on the fineness because of overheating.
- The system for adding surface modifiers must be kept clean to prevent cross-contamination.