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Acidic Ramming Mass, also known as Silica Ramming Mass or Mix, is used in Coreless Induction Furnaces, for melting of scrap. It is a dry lining refractory that can be used for all types of iron and steel and in both mini steel plants as well as foundries.

Our VINRAM® series of high performance, dry Ramming Masses are manufactured by our mother company. The entire marketing of Ramming Masses abroad is being done by RSP Corporation. Our product quality can be adjudged by the fact that VINRAM® is being now sold in 9 countries under our own brand name and competing with all European and American manufacturers.

Ramming mix is characterized by thermal stability, corrosion resistance and wear resistance because it contains less binders, fire clay and moisture compared to plastic refractories.

  • Recommended for lining the iron melting coreless induction furnace
  • Premixed with binder to customer's specifications
  • Maximum recommended use limit - 3092°F (1700°C)

VINRAM®, Ramming mass, is manufactured under completely controlled conditions and the formulation is prepared with consultations of major furnace manufacturers. It is best suited to control:

  • Reactivity of the refractory
  • Temperature in which reactivity takes place
  • Sintering characteristics of the lining
  • Density and strength of the lining

Silica or Acidic Ramming mix is used in all types of induction furnaces as a refractory and furnace lining for coreless induction furnace, as insulation material to prevent the coil from the metal. VINRAM®

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VINRAM® is available in 2 grades


  This is the mass used product, especially in the low cost segment in India and has a Silica content in the range of 98.50 – 99%.


  This is the highest purity material available from India and is an enhanced silica lining for severe conditions. The Silica content here is in the range of 99.70 – 99.80 %.



Both the above grades are available in premixed versions also, denoted by P. We have been the leaders in promoting premixed use in big capacity induction furnaces. Premixed gives the following benefits to the user:

  • Proper mixing of binder leading to optimum mixture
  • Less wastage, as mixing is done by machines
  • Only use imported Boric Acid is used to give best results
  • Consistent and longer lining and patching life
  • One less item in inventory


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FURNACE SPECIFIC BENEFITS : We are the only manufacturer to give material as per the furnace capacity and make of the user. The granulations of the mix are optimized keeping in view the furnace make and capacity, thus giving maximum and best results.

Product Data Sheets are available on request.



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