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All Right Reserved
|
HS Code |
490314 |
| Chemical Formula | CaCO3 |
| Appearance | White, fine powder |
| Molecular Weight | 100.09 g/mol |
| Purity | Typically > 98% |
| Particle Size | 0.1 – 10 microns |
| Bulk Density | 0.5 – 0.7 g/cm³ |
| Ph Value | 8.5 – 9.5 (10% slurry) |
| Moisture Content | < 0.5% |
| Solubility In Water | Insoluble |
| Specific Surface Area | 5 – 20 m²/g |
As an accredited Industrial Precipitated Calcium Carbonate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in 25 kg multi-layered kraft paper bags, clearly labeled with product name, manufacturer, batch number, and safety instructions. |
| Container Loading (20′ FCL) | Industrial Precipitated Calcium Carbonate is loaded in 20′ FCLs, typically packed in 25kg bags, totaling about 24-25 metric tons. |
| Shipping | Industrial Precipitated Calcium Carbonate is typically shipped in multi-layer paper or polypropylene bags (25 kg or 50 lb), jumbo bags, or bulk via tanker trucks. Packaging ensures protection from moisture and contamination. Shipping complies with safety regulations, with clear labeling and handling instructions. Store in dry, well-ventilated environments upon receipt. |
| Storage | Industrial Precipitated Calcium Carbonate should be stored in a cool, dry, well-ventilated area, away from moisture and incompatible substances such as acids. It should be kept in tightly sealed containers or bags to prevent contamination and caking. Storage areas must be clearly labeled and protected from physical damage to ensure chemical stability and safe handling. |
| Shelf Life | Industrial Precipitated Calcium Carbonate typically has an indefinite shelf life if stored in a dry, cool, and well-sealed container. |
Competitive Industrial Precipitated Calcium Carbonate prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615365186327 or mail to sales3@liwei-chem.com.
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Tel: +8615365186327
Email: sales3@liwei-chem.com
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Behind every reliable batch of preciptated calcium carbonate, there’s careful control over process and purity. In our years running reactors and monitoring every stage, key differences show themselves in the texture, color, and reactivity of the finished product. Unlike ground calcium carbonate, the precipitated form starts with a chemical reaction—calcium hydroxide and carbon dioxide—giving a fine, bright white powder with a steady structure. Many customers who need uncompromised whiteness in their paper or precise particle size for their plastics trust this product because it delivers beyond average mineral fillers.
We’ve learned the line between a functional loading agent and a liability runs through the quality control lab. When churned out via an uncontrolled process, calcium carbonate commonly brings in coarse particles or weak brightness that frustrates both the end user and the technicians who watch for clumping. Precipitated calcium carbonate, on the other hand, grows within a reaction vessel. This gives our technical crew much more room to adjust the particle size, from several microns down almost to nanometer scale. For example, we often make grades around D50 = 1.5 microns for high-gloss papers, or finer for specialty coatings where the pigment’s smoothness must remain flawless. Throughout production, lab technicians pull samples, observe through a laser diffraction analyzer, and maintain the predicted particle profile. If fineness drops or a batch’s scattering power trails off, line managers know quickly—and have records to show where things shifted.
Some people look at PCC and think only of chalky residue or a filler. Working at scale changes your opinion. In papermaking, this mineral does more than just bulk up the web. At the right size and distribution, it boosts brightness, opacity, and gloss, letting mills cut back on expensive titanium dioxide. We keep close relationships with engineers at the big paper mills who measure retention rates and run scanners over new sheets. The feedback comes clear: lines that use carefully screened PCC grades see fewer pinholes, more color uniformity, and better print acceptance. For paints and coatings, qualified grades of PCC build the hiding power and improve smooth laydown, reducing the total expensive pigments needed. Rubber plants notice that the right PCC grade sharpens the tensile strength in their white vulcanizates without bringing in silica’s higher costs or abrasiveness. Plastic compounders aiming for FDA compliance or better surface finish also count on the predictable structure of precipitated calcium carbonate to ensure mold flow and keep heat distortion in check.
Most technical buyers pay special attention to color and brightness. Any factory producing high-quality fine paper or delicate food packaging knows that a slight yellow tint in the calcium carbonate can throw off their product or require expensive color correction. This is not a detail that originates at the distribution warehouse—color control starts deep in the reactor. Our teams select raw materials with high screening standards and rinse mother liquors to remove iron and trace metal ions before carbonation even begins. Experience has taught us that controlling the reaction’s temperature and pH down to fine margins cuts down on impurities that eat away at brightness. Finished PCC batches often reach ISO brightness upwards of 96%, with L* color ratings that meet the strictest paper mill demands. At inspection, both side-by-side color panels and advanced spectrophotometers confirm that each tonne meets contract thresholds.
Real production teams know that every customer comes with a legacy process—and no two mixing lines behave exactly the same. Early on, we faced clients complaining about unexpected sediment, poor dispersibility, or foaming at high pH. Solving those needed both on-site visits and ongoing lab effort. Many compounders benefit most from grades that disperse rapidly in water, which often means surface-modified PCCs with controlled surface energies. Our factory added a surface treatment step using proprietary fatty acids and organosilanes, which keeps Powder-A grades from clumping in latex mixes. On the plastics end, some lines need stearate-coated products for easier compatibility with polyolefins and less dusting during transfer. These grades resist absorption of plasticizers, allow higher loadings in masterbatches, and cut down on melt flow reduction. Tire makers experimenting with new formulations inside summer or winter compounds often specify a particle shape or absorption number only matched by our controlled precipitation process, not mined alternatives.
Big buyers don’t look kindly on batch-to-batch surprises, and quality disputes cost everyone time. Having run regular shipments to dozens of factories, we understand what it takes to keep a client’s process stable. Daily practice at our plant involves running statistical control on key traits: particle size distribution, moisture level, surface area (often BET-measured), and phase purity by XRD. Production systems rely on a closed-loop setup, using automated CO2 and Ca(OH)2 dosing, regularly calibrated. Any deviation shows up on a real-time dashboard, and seasoned operators have the green light to halt a batch if numbers fall outside control bands. This discipline traces back to complaints from years ago, where a single loose valve triggered a chain of rejections. Now, every bag’s origin and properties are logged; we pull retain samples from every lot so our lab can answer any claim with original data—not excuses.
Every chemical manufacturer faces utility bills that tell the hidden story of process efficiency. PCC production draws heavily on both energy and water. Our plant crews spend time finding places where steam or pressurized CO2 can be recaptured or recycled between reactor cycles, saving not only on costs but reducing environmental impacts. Multi-stage filtration units recover nearly all water used in the washing of PCC cake, routing it back upstream or through on-site treatment. Having walked the shop floor during both peak and off-hour operations, process engineers identify high-draw points—such as the drying chamber running on old technology—and plan upgrades to improve kWh per finished tonne. These savings let us remain cost-competitive, especially when power costs fluctuate or environmental rules grow tougher. Unlike secondary traders, true manufacturers keep these production realities at hand when promising price stability to our long-standing customers.
A lot of buyers look only for an average particle size, but that tells only half the story. Factory settings dealing with tough films or critical printing paper want to know the full size distribution—including any oversized particles that may scratch or dull rollers. Every lot shipped from our warehouses comes with a full particle analysis curve, not just a D50 number, plus chemical purity checks covering MgO, Fe2O3, and other trace elements. We have invested in X-ray diffraction and infrared spectroscopy tools; not every label makes a difference, but when a customer’s batch fails a downstream QC test, having detailed origin data helps us catch and fix recurring issues before they become costly shutdowns. Oversized grains, excess moisture, or trace metal contamination show up long before a batch leaves our finishing plant.
People new to raw materials often ask why not use ground calcium carbonate. The answer becomes clear in use. GCC supplies volume at low cost, mined by crushing and milling limestone directly. It brings larger, less regular particles, moderate brightness, and limited control over shape, which sometimes results in a rougher surface or potential for yellowing over time. Precipitated calcium carbonate from our reactors, by contrast, brings rounder particles, purer color, and finer size distribution. In our experience with paint formulators, those differences mean less scattering loss and a silkier finish in high-end coatings. Plastics processors see easier dispersion and improved impact properties. Paper machines report fewer paper breaks from uneven filler retention. When the product must perform under exacting standards, the extra step of chemical synthesis pays off over the basic crushed material.
Every plant engineer has their non-negotiables. Some worry about dusting in dry batch loading; others need faster dispersion for inline slurries. Our manufacturing experience highlighted the value of working hand-in-hand with technical teams, troubleshooting mixes on-site to tweak feeding rates or slurry densities. In one instance, a customer struggled with unexpected settling in a paper mill storage tank. Lab tests tracked the issue to minor changes in surface treatment chemistry, which our process team corrected on the next production run, restoring flow and sheet smoothness. This kind of close feedback loop, which comes only from years of hands-on work, helps us craft PCC grades that not only match a specification sheet but actually deliver results in our customers’ factories.
Modern industries expect suppliers to do their homework on compliance. Our plant operates under the strict eye of both local environmental authorities and industry sector audits. The process must cut waste at every stage; we maintain records showing that water discharges and air emissions remain far below regulatory thresholds. Our PCC naturally contains no hazardous substances under REACH and is often requested by food packaging users for compliance with FDA and EC guidelines. Auditors want evidence of traceability, right back to incoming lime and CO2; our internal digital logs and batch samples back that up. Long before a customer’s inspector steps onto the shop floor, we’ve confirmed that no added toxins, dangerous heavy metals, or process contaminants sneak into any PCC destined for regulated markets.
Resting on one formula never keeps pace with changes in industry demands. Over the years, customers in packaging, paints, and specialty films started asking for ever-finer grades with unique surface chemistry. Our R&D teams responded by bringing new reactor setups and surface modification agents into regular production, often in collaboration with leading application labs. Key process improvements include closed-loop carbonation for tighter particle control and novel dispersant blends to help the PCC slip into ever-more demanding polymer blends. Customer trials and feedback drive these shifts, as end-users cite what works and where problems arise. Regular workshops with papermakers and compounders pull back the curtain on application challenges, letting the manufacturing team tweak the product before issues stall a customer’s line.
No production environment exists without unexpected hurdles. We’ve faced slumping batches, where sudden power outages threw the carbonation stage off balance, and fixed the issue through investment in upgraded automated controls and backup systems. Field complaints about dusting in bagging inspired tighter humidity and temperature controls during final drying and packaging. Internal discussions after customer complaints led not to blame, but to sharing knowledge across the floor, so technicians new and old keep learning from both victories and mistakes. These day-by-day improvements move the needle, making for a better, more trusted product with each cycle.
Choosing a direct producer does more than cut out a middleman. It allows closer alignment between what the customer expects and the batch that leaves the plant. As a manufacturer, we keep core intellectual property in-house, giving us room to adjust grades, particle handling, and surface treatments to real problems. Our partnerships with users go beyond paperwork—application specialists walk through customer lines, troubleshoot with production staff, and bring insights back to our R&D team. This cycle of closed communication makes each shipment more reliable, helping customers avoid costly production delays, curling paper, separating paint, or streaks in films.
Large automated systems handle most of the output, but skills passed through generations of plant operators rarely show up in data sheets. On the floor, an experienced hand sees moisture shifts in the cake or spots a pH drift in a reaction batch by sight and smell before sensors catch up. These details stop many issues before they start and reinforce why factory ownership, not paperwork, builds trust with every customer. In training, we make sure new technicians know not just how to run systems, but why each variable matters, weaving pride and vigilance into every bag and bulk container shipped.
As pressure builds for more sustainable chemical production, real improvements depend on efficient, closed-loop systems. Our teams push for higher CO2 capture from industrial sources, reducing overall emissions. Innovations in continuous filtration and water recycling cut waste and shrink our environmental footprint further. Seeking out industrial partners to use spent lime or process offcuts creates new value streams, instead of sending by-products to landfill. These efforts grow from a front-line understanding of daily operations—not as a sales pitch, but as a shared commitment to efficiency and responsibility that earns respect from regulators and customers alike.
Industrial precipitated calcium carbonate could look similar across suppliers, yet every nuance in particle size, whiteness, dispersibility, and safety matters more to those who actually run the reactors and handle the powders. By keeping production under our control and improving from the feedback that comes off customer lines, our teams offer not just a product, but a working partnership that helps customers meet tighter specs, deliver brighter products, and stay ahead in demanding markets. It’s an approach born out of real-world manufacturing—grounded in daily checks, collaboration with industry partners, and a history of constant technical refinement.
