Special Calcium Carbonate Powder for Papermaking High Purity

Product Overview
High-solids ground calcium carbonate (GCC) represents a technologically advanced mineral filler specifically engineered for modern paper manufacturing processes. This optimized filler material delivers significant performance advantages in both papermaking and coating applications, addressing multiple critical production parameters simultaneously.

Key Technical Advantages

Process Efficiency Enhancement

• Superior Water Filtration Characteristics:

  • 30-40% faster drainage rates compared to conventional fillers

  • Reduces moisture retention by 15-20%

  • Enables higher machine speeds (up to 1200 m/min improvement potential)

Paper Machine Performance

• Improves wire section dewatering efficiency

• Reduces press section steam demand

• Minimizes dryer section energy consumption

• Decreases felt contamination issues

Paper Quality Improvement

Optical Properties

• Increases sheet brightness by 2-4 points (ISO scale)

• Enhances opacity by 10-15%

• Improves surface gloss uniformity

• Delivers superior print contrast ratio

Physical Characteristics

• Boosts tensile strength by 8-12%

• Improves Z-directional strength

• Enhases surface smoothness (PPS reduction of 0.2-0.5μm)

• Optimizes ink receptivity and setting time

Particle Engineering Benefits

Optimal Particle Morphology

• Precisely controlled particle size distribution:

  • D50: 1.5-2.5μm

  • D90: <6μm

  • Top cut: <15μm

Crystal Structure Advantages

• Rhombohedral crystal form promotes:

  • Better fiber bonding

  • Improved light scattering

  • Enhanced coating structure

Coating Performance

Rheological Benefits

• Reduces coating color viscosity by 20-30%

• Improves high-shear rheology

• Enhances runnability at high speeds

Structural Advantages

• Increases coated paper stiffness

• Improves fold endurance

• Reduces dusting tendencies

Technical Comparison with Alternative Fillers

Production Process Benefits

Energy Efficiency

• Reduces drying energy requirements by 12-15%

• Lowers overall steam consumption

• Decreases thermal load on dryer section

Environmental Advantages

• 10-15% reduction in water usage

• Lower BOD in whitewater systems

• Reduced sludge volume

Recommended Application Parameters

Filler Applications

• Optimal loading: 12-28% by weight

• Preferred addition point: Thin stock

• Retention aid requirements: Standard dosage

Coating Applications

• Recommended inclusion: 30-60% of pigment blend

• Binder demand: 12-14 parts per 100 parts pigment

• Coating weight: 8-12 gsm per side

Quality Control Specifications

• CaCO₃ content: ≥98%

• Brightness: ≥92% ISO

• 325 mesh residue: ≤0.01%

• Moisture content: ≤0.5%

• Abrasion value: ≤5mg/2000 rev

Economic Benefits

• Reduces pulp requirements by 15-20%

• Lowers overall production costs

• Increases machine productivity

• Reduces downtime for cleaning

Sustainability Profile

• Carbon footprint: 0.15 kg CO₂/kg

• Fully recyclable in paper systems

• REACH compliant

• Food contact approved grades available

Technical Support Services

• Machine trial supervision

• Optimization of filler strategies

• Coating color formulation assistance

• Quality troubleshooting

This advanced high-solids GCC product has become an essential component for paper manufacturers seeking to optimize both quality and production efficiency. Its unique combination of physical characteristics and process benefits makes it particularly valuable in today's competitive paper markets where operational efficiency and product quality are paramount. Ongoing technical support ensures optimal implementation for each specific production environment.