Calcium Carbonate Plant
Turnkey solution
From basic filler-grade GCC to high-end nano PCC
Production capacity: customized
Powder Fineness: customized based on final product usage
Application of final product: construction, paper, paint, plastics, rubber, adhesives, food and pharmaceuticals, agriculture and industry
GCC & PCC Production line
Precipitated calcium carbonate plant
We build complete calcium carbonate production plants, handling both Ground Calcium Carbonate (GCC) and Precipitated Calcium Carbonate (PCC) systems from start to finish.
You don’t just get equipment—we guide you through everything. We start with in-depth consultations and process design. From there, we handle manufacturing, installation, getting the lines up and running, and hands-on operator training. All the steps are covered, so your plant can begin operating efficiently and reliably.
Every project is different; we tailor our solutions around what you need. Whether you’re after a specific fineness—anything from coarse to ultra-fine grades—building a small facility or a massive industrial plant, or serving industries like plastics, paper, coatings, rubber, or construction, we make sure everything fits.
When it comes to GCC, we supply advanced grinding systems: crushing, milling, classification, and even surface coating if you need it. We achieve consistent particle sizes and strong productivity. For PCC, we design full chemical processing lines, from limestone calcination and lime slaking to carbonation, filtration, drying, and packaging. It all adds up to high-purity, precisely controlled calcium carbonate.
We also integrate PLC automation, smart plant layouts, and strict quality checks. This means stable product quality, smooth operations, and lower labor and running costs.
Whether you’re starting a new plant or upgrading an old one, we can deliver a reliable, scalable, and cost-effective calcium carbonate solution—built around your business goals.
Rich experience in the lime industry
Our deep understanding and practical experience in the lime industry allow us to provide dependable GCC and PCC plants that create calcium carbonate with the right particle size, chemical purity, and color.
Strong technical support
Our design and engineering team is backed up by the Tianjin Cement Industry Design and Research Institute, which shares a reputation for proficiency. The designed process is scientific and suits the very demands of production.
Customized service
The solutions for calcium carbonate production are highly customized, from the capacity, finished particle fineness, and the use of key manufacturing machines to the manufacturing process, installation and debugging, and after-sales services.
Worldwide successful cases
We have completed numerous projects from domestic and abroad. The intensive turnkey service saves valuable time for the customers, and their feedback inspires us to go further in innovative and effective solutions.
Ground calcium carbonate plant (GCC plant)
Manufacturing process
The GCC production process primarily consists of crushing, grinding, classifying, dust collection, transportation, and storage.
- Raw material processing: raw materials such as calcite, limestone, marble, and chalk are crushed to get a small size of feed that can be sent into grinding machines.
- Grinding: materials are uniformly conveyed to the grinding machine for grinding following the crushing process. Grinding machines have many options such as a ball mill, a vertical mill, a Raymond mill, etc.
- Classifying: the air flow carries ground materials entering the jet pulse filter or cyclone separator to be separated. The qualified materials are kept for collecting, and the unqualified materials drop to the grinding machines for regrinding.
- Powder collecting: the fine materials are collected following separation from air and discharged for the next step.
- Transportation and storage: finished products are unloaded from the separator and transported in bulk to the construction site directly or stored via conveying systems.
Key equipment for the GCC plant
Finished product features
Ultrafine Ground Calcium Carbonate (325–2500 Mesh): Used in plastics and rubber to enhance gloss and tensile strength.
Nanoscale Ground Calcium Carbonate (>2500 Mesh): Used in coatings and cosmetics to improve opacity and spreadability.
High-Whiteness Ground Calcium Carbonate (Whiteness ≥95%): Suitable for demanding applications such as food and pharmaceutical packaging.
Standard-Whiteness Ground Calcium Carbonate (85%–94%): Primarily used in cost-sensitive applications, such as construction putties and standard plastic piping.
Activated Ground Calcium Carbonate: Surface-treated with coupling agents; offers excellent compatibility with polymer materials and allows for a reduction in the required amount of vulcanizing agents.
Precipitated calcium carbonate plant (PCC plant
Manufacturing process
The precipitated calcium carbonate is produced in a flow of raw material selection, calcination, slaking, carbonization, dehydration, drying, and crushing.
- Raw material preparation: high-quality limestone with a CaCO₃ content of ≥95% is selected and crushed to a particle size of 10–20 mm.
- Calcination: limestones are calcined in the lime kiln with anthracite under high temperatures (990-1100℃) and decomposed to quick lime and carbon dioxide.
- Slaking: Mix the quicklime with water at a certain ratio and let it react in the slaker to produce hydrated lime.
- Carbonation: Pump up the hydrated lime in the carbonizer to react with carbon dioxide and get the precipitated calcium carbonate.
- Dehydration and drying: The carbonized slurry undergoes centrifugal dewatering and filtration to remove moisture, yielding wet calcium carbonate with a moisture content of approximately 30%. It is subsequently subjected to drying at 120-200 ℃.
- Grinding and grading: Dried material is crushed by the grinding mills and graded by an airflow sieve or a vibrating screening machine to get particles at a controllable size, generally between 0.1 and 10 μm.
Key equipment for the pcc plant
Finished product features
High purity: Typically ≥99%, with low impurity content, making it suitable for applications with stringent safety requirements such as food, pharmaceuticals, and cosmetics.
Fine and uniform particle size: The average particle size ranges from 0.1 to 2 microns; certain nanoscale products can reach 0.01 to 0.1 microns. It features a narrow particle size distribution and excellent filling uniformity.
High whiteness: Whiteness generally exceeds 95%, with some high-end products reaching 98%, making it ideal for white or light-colored products.
Large setting volume: Ranging from 2.4 to 2.8 mL/g—significantly higher than that of heavy calcium carbonate (1.1 to 1.4 mL/g)—hence its designation as “light” calcium carbonate.
Large specific surface area: Due to its ultrafine particles, it possesses a large specific surface area, which enhances its interaction with matrix materials.
Controllable crystalline morphology: Through process adjustments, various crystal forms—such as calcite (hexagonal system), aragonite (orthorhombic system), or spherical structures—can be obtained to meet specific performance requirements.