CalFill

CalFill is a versatile calcium carbonate filler designed for consistent performance in construction materials, rubber, plastics, PVC, tiles, adhesives, paints, putties, sealants, paper, and board applications. Its controlled particle size between 100 and 400 mesh ensures excellent dispersion, reliable bulk density, and uniform workability. CalFill improves dimensional stability and process efficiency across a broad range of industrial uses.

Industries Served

  • Industrial Fillers and Additives

Chemical Composition

  • Calcium Carbonate (CaCO₃): ≥95%

Particle Size

  • D50: ~30–100 microns (grade-dependent)
  • Top Cut: 150–38 microns (as specified)
  • Bottom Cut: ~20 microns (fines limit)
  • Custom PSD and D-values available

Packaging & Handling

  • 25/50 kg HDPE bags
  • 1 MT moisture-proof jumbo bags
  • Custom packing on request

Product Benefits

  • Paints, Coatings & Putties: Improves bulk and smooth application
  • Adhesives & Sealants: Supports rheology and reduces shrinkage
  • Construction Fillers: Adds stability to mortars and grouts
  • Rubber & Plastics: Increases filler loading efficiency
  • Paper, Pulp & Cardboard: Provides bulk and printability enhancement
  • Ceramics & Tiles: Improves body strength and smooth finish

FAQs

How does Cal Fill improve rheology and processing?
Its controlled particle sizing and low moisture content ensure smooth flow properties, stable rheology, and reliable dosing in high-speed mixing, extrusion, and compounding operations.
How is moisture controlled for optimal performance?
Cal Fill is thoroughly dried, stored in moisture-protected environments, and packed in sealed bags to maintain low residual moisture, preventing clumping and ensuring consistent dispersion.
How is Cal Fill suitable as a versatile filler?
Cal Fill offers customizable D90–D95 distributions and mesh ranges tailored to your process. It performs reliably in fully automated segregation and mixing systems across diverse formulations, supporting predictable flow and uniform blending.

Other Industries

Learn more about the industries Dr. Lime supports


Cement & Construction
Cement & Construction
Construction and AAC

High-grade limestone sweetener corrects marginal limestone, balances high-silica mixes, improves nodulization and kiln throughput, and supports consistent strength development at grinding—stabilizing clinker and cement performance across plants.

Products used:

Steel & Metallurgy
Steel & Metallurgy
Steel and metallurgy

As a fluxing agent, limestone optimizes slag formation, reduces impurities, and improves overall melt quality. In sintering, high-grade limestone binds fines and lowers melt temperature for strong, reactive sinter—supporting efficient blast furnace and cleaner steel in secondary metallurgy.

Products used:

Chemical & Industrial Processes
Chemical & Industrial Processes
Chemical industry

Chemical-grade limestone is a critical raw material for producing high-purity lime and calcium derivatives. Its consistent CaCO₃ content, low silica, and minimal iron ensure predictable reactivity and clean conversion in calcination, hydration, and chemical reaction processes. Whether in rotary kilns, PFR kilns, or shaft kilns, it supports reactive lime, PCC, and specialty calcium compounds.

Products used:

Environmental & Water Treatment
Environmental & Water Treatment
Water treatment

For SO₂ control in thermal power, limestone FGD is a proven path to compliance. High-reactivity limestone works in wet scrubbers and spray dryers; in water treatment, lime neutralizes acidity, precipitates metals, and polishes effluent for safer discharge.

Products used:

Power & Energy
Power & Energy
Power and environmental applications

CFB and coal-based units rely on limestone injection/FGD for SO₂ capture. High-reactivity limestone improves capture efficiency in both retrofit and new builds—helping plants meet stringent air-quality norms.

Products used:

Glass & Solar Panel Glass
Glass & Solar Panel Glass
Glass and solar glass

High-calcium, low-iron limestone lowers melting temperatures and stabilizes batch chemistry. Tight sizing ensures uniform melt flow; ultra-low iron is critical for solar, optical, and premium architectural glass clarity.

Products used:

Poultry & Animal Feed
Poultry & Animal Feed
Poultry and animal feed

High-purity CaCO₃ provides bioavailable calcium for bone mineralization, muscle function, and eggshell formation. Controlled particle sizes enable uniform mixing, predictable release, and consistent feed performance across growth stages.

Products used:

Fertilizer and Agriculture
Fertilizer and Agriculture
Agriculture

To manage soil acidity, limestone supplies calcium (and magnesium where dolomitic), improving structure, microbial activity, and nutrient availability. Result: better root development, balanced uptake, and improved yields.

Products used:

Industrial Fillers & Additives
Industrial Fillers & Additives
Industrial fillers and additives

GCC/limestone powder is a cost-effective mineral extender for plastics, paints, rubber, and more—improving bulk density, workability, rheology, dimensional stability, and throughput with consistent sizing and low moisture.

Products used:

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