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Ramming mass

Boric Acid Premix

Silica ramming mass with an H₃BO₃ binder, available in standard and custom specifications.

Boric Acid Premix bag mockup with the supplied red and green print, 50 kg
Boric Acid Premix · 50 kg

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1.2% Boric Acid Premix

Large furnace · Above 8T capacity

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1.4% Boric Acid Premix Foundry Grade

SIL-RAM 1514 · Below 8T capacity

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1.6% Boric Acid Premix Foundry Grade

SIL-RAM 1516 · Below 8T capacity

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An economical chemical binder

Boric acid provides effective, economical binding. Its chemically bonded water is released during sintering, so appropriate lining and sintering practices are important to prevent moisture-related deterioration.

Standard premix specifications

Foundry-grade specifications differ. Open the selected SIL-RAM specification sheet for its grain size, temperature rating and shelf life.

Specifications and application information
Boric acid premix1.2%
Silica content98.5% minimum
Grain size0–7 mm
Maximum operating temperature1700 °C
Bulk density2.20 g/cm³
Standard packing50 kg ± 0.1 kg, HDPE bags with PP liner
Shelf life6 months; store in cool, dry conditions
Best lining practices ↗Discuss custom specifications ↗