Epic Powder Machinery Co., Ltd. is a leading Chinese manufacturer specializing in vertical roller mills (SRM series) and high-precision turbine air classifiers (HTS series). With over 20 years of experience and many successful installations worldwide, Epic Powder delivers industry-leading particle size control, narrow distribution, high throughput, and outstanding energy efficiency. Our flagship SRM series roller mills covering wide capacities. All systems feature high-precision classifiers, fully wear-resistant lining options for contamination-free calcium carbonate grinding. They are also equipped with PLC-controlled automation for 24/7 stable operation.
Typical Capacity & Fineness of SG, Roller Mills (Calcium Carbonate Examples)
Real Customer Case – Silica (SiO₂) with SRM125 Roller Mill
A major Asian producer of high-purity precipitated and fumed silica achieved the following results using one set of Epic Powder SRM125 roller mill:
- Feed material: Precipitated silica, D50 ≈ 18 µm
- Target: D90 ≤ 10 µm
- Achieved: D10 = 1.8 µm | D50 = 4.5 µm | D90 = 9.8 µm | D97 = 12.5 µm
- Stable production capacity: 360 kg/h
- Specific energy consumption: 185–195 kWh/t
The customer reported 20–25% lower energy consumption and far superior particle size consistency compared to their previous imported mechanical mills.
Why Ultra-Fine and Nano Calcium Carbonate Matter in Plastics
Calcium carbonate is the most widely used mineral filler in the plastics industry due to its low cost, wide availability, low density, and excellent whiteness and reinforcement properties. When ground to micron or sub-micron levels using Epic Powder roller mills, calcium carbonate delivers dramatic improvements in mechanical performance, surface finish, and functionality.
Key Advantages of Different Calcium Carbonate Types in Plastics
Light Calcium Carbonate (PCC): Superior reinforcement, significantly improves impact strength and toughness.
Heavy Calcium Carbonate (GCC): Excellent cost reduction, high dispersion, similar refractive index to resins → easy coloring, high brightness.
Nano Calcium Carbonate (<100 nm): Highest reinforcement, used in premium automotive, wire & cable, and film applications.
Major Plastic Applications of Ultra-Fine Calcium Carbonate Produced by Epic Powder Roller Mills
Polyvinyl Chloride (PVC)
Ultra-fine CaCO₃ (D97 6–10 µm or finer) is widely filled in rigid PVC profiles, pipes, window frames, siding, and soft PVC films, artificial leather, wire & cable sheathing.
Benefits:
- Improves dimensional stability and surface smoothness
- Enhances flame retardancy and chemical resistance
- Acts as viscosity regulator in PVC paste
- Reduces surface scratching and bending-whitening compared with coarse grades
Polyethylene (PE)
50–90 wt% ultra-fine heavy calcium carbonate is compounded with HDPE/LDPE to produce “calcium-plastic” corrugated sheets, pallets, and foamed wood-plastic substitutes.
Benefits:
- Higher rigidity, compressive strength, and heat deformation temperature than pure PE
- Excellent cold resistance to water, shock, and sound
- Lower cost and easier secondary processing (sawing, nailing, screwing)
Polypropylene (PP)
Nano and active calcium carbonate (surface-treated) significantly improves tensile strength, flexural modulus, impact resistance, and heat resistance of PP.
Common applications: automotive bumpers dashboards, home appliance housings, IC trays, microwave oven parts, flame-retardant electrical components (TV high-voltage packs, coil bobbins, switch housings).
Self-extinguishing grades achieve UL94 V-0 with excellent electrical insulation that is minimally affected by temperature and humidity.
Epic Powder
Epic Powder provides the most reliable and energy-efficient roller mill and classifier systems for producing high-performance calcium carbonate and other mineral powders.
Let us help you unlock the full potential of ultra-fine fillers in your plastic compounds — higher strength, better processing, lower cost, and superior final product quality.
Contact Epic Powder today for free material testing and customized grinding solutions.
Website: https://www.nonmetallic-ore.com | [email protected]
“Thanks for reading. I hope my article helps. Please leave a comment down below. You may also contact EPIC Powder online customer representative Zelda for any further inquiries.”
— Jason Wang, Senior Engineer