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Sinter Pure

SinterPure is a high grade lime and calcium carbonate flux developed for application in iron and steel sintering and other metallurgical processes. It is extensively used in base metal smelting, non ferrous refining, ladle metallurgy and secondary steelmaking. The product helps optimise slag composition, improve slag fluidity and promote the removal of impurities. By maintaining consistent calcium levels, it contributes to stable slag chemistry and supports the production of cleaner and higher quality metal across industrial operations.

SinterPure is known for its reliability in demanding metallurgical environments, where precise reactions and chemical balance are critical. Its engineered formulation ensures strong sinter performance and efficient fluxing action during process stages. With its controlled particle size and purity, the product delivers predictable performance for large scale steelmaking and smelting facilities.

Benefits

SinterPure provides several key operational advantages across ferrous and non ferrous metallurgy.

  • Enhances slag fluidity and impurity removal efficiency.
  • Stabilises slag chemistry through consistent calcium composition.
  • Improves sinter strength and reaction uniformity in sintering operations.
  • Supports cleaner metal production with minimal residue generation.
  • Offers precise dosing through calibrated particle sizing.
  • Ensures uninterrupted process reliability as a dependable fluxing material.

Each of these benefits contributes to higher metallurgical efficiency, reducing production losses while improving the final metal’s physical and chemical quality. The use of high purity lime ensures smooth reactions and minimal impurities entering the molten phase, enabling steady furnace performance.

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Uses

Iron ore sintering to enhance strength and metallurgical bonding.

  • pH correction in effluent treatment plants
  • Smelting of base metals where impurity control and slag quality are vital.
  • Non ferrous metal refining operations such as copper and nickel processing.
  • Ladle metallurgy and secondary steelmaking for refining molten steel and removing sulphur or phosphorus.

Custom particle sizes allow adaptability across different furnace designs and feed systems. This flexibility supports both large integrated steel plants and smaller speciality foundries with efficient flux handling and use.

Production

SinterPure is produced from high quality calcium carbonate sources with strict monitoring of chemical purity. The raw material undergoes refinement to achieve a CaCO₃ concentration between 90 and 92 percent with low silica content not exceeding 1.8 percent. It is processed into calibrated grain sizes designed for different sinter and fluxing requirements.

Through consistent production control and reliable distribution, SinterPure ensures optimal performance in every metallurgical environment, supporting process stability and sustained metal quality.

Sinter Pure Specifications

Chemical Composition

  • CaCO₃ ≥90–92%
  • Silica ≤1.8%

Particle Size

  • 0–3 mm (fine sinter mix)
  • 3–8 mm (standard sinter flux)
  • >Custom sizes between 0–8 mm on request
  • Custom PSD available

Packaging & Handling

  • Supplied loose by open-body truck/tipper
  • Bulk supply by rail in open wagons
  • Available in 1 MT jumbo bags or 25/50 kg HDPE bags

FAQs

How does SinterPure improve the sintering process?
In iron ore sintering, SinterPure acts as a flux that binds fine particles, lowers melting temperatures and promotes uniform slag formation, resulting in stronger, more reactive sinter for blast furnace use.
Can SinterPure be used in non-ferrous metallurgy?
Yes. SinterPure is also used as a flux in copper, lead and other non-ferrous smelting and refining, where it adjusts slag basicity and improves impurity capture and removal.

Other Industries

Learn more about the industries Dr. Lime supports


Cement & Construction
Cement & Construction
Construction and AAC

High-grade lime sweetener corrects marginal lime, 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, lime optimizes slag formation, reduces impurities and improves overall melt quality. In sintering, high-grade lime 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 lime 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, lime FGD is a proven path to compliance. High-reactivity lime 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 lime injection/FGD for SO₂ capture. High-reactivity lime 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 lime 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, lime 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/lime 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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