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Ramming paste

Ramming paste is produced from calcined petroleum coke, calcined anthracite and other binder materials.

Ramming paste is intended for a tamping of seams both between bottom cathode blocks and between sidewall cathode carbon blocks in aluminium reduction cells. It is also used for hearth construction in foundry furnaces as well as iron and steel-making furnaces, and for electric arc furnaces tap hole closing.

Product form:

Ramming paste consistency - loose or plastic materials.


  • product are packed in big bags
  • in metal containers

Technical specification:

Ash content % (max)2,05,06,0-
Sting mm---10-18
Compressive strength MPa (min)202024,5-
Resistivity µΩm (max)6090--
Porosity % (max)3023,022,0-
Tamped bulk density kg/m31600 - 17001580 - 17001580 - 1700-
Ramming temperature ºC20-40120-13040-5040-70

If required, other values of parameters might be agreed upon.

Calcined materials



Company VUM, a.s. has since 2005 certified Quality Managements System, system of occupational safety and environment.