Silica Ramming Mass for Induction Furnaces

SILICA (INDUCTION )RAMMING MASS

High Silica (Acidic) Ramming Mass for induction furnaces.

Introduction:

The Silica Ramming Mass is a monolithic lining material for All type.  Induction furnaces it is. Manufacture out of high purity silica grains with controlled grading the Silica Ramming Mass has a service temperature 1650 °C and are used with boric acid the sintering agent.

Technical Data:

• Silica ( SiO₂ )….   +99%
• Grading ….   0-10 mm
• Sintering Temp. ….    800° C
• Service Temp….   1650° C
• Sintering agent ….   Boric Acid

(The material is supplied without Boric acid)

Method of Application:

The Silica Ramming Mass is use with the mixing of requisite amount of sintering agent the boric acid. the addition of sintering agent   is necessary because the lining crucible sinter during heating up and develop strength before molten metal and or scrap is charged. Proper care should be taken during mixing of the sintering agent with the mass. Most important of which are removal of traces of moisture from the mass by drying and through uniform mixing,  Ramming of the crucible starts after laying the insulation around the coil. For this purpose, at first, the bottom of the crucible is formed by ramping the Silica Ramming Mass is layers with the help of round and flat hammers.

After the bottom is stamped. a former consisting of mield steel shell is placed centrally On the bottom and ramming of the annular space between the coil and the shell wall is carried out. The Ramming of the crucible wall is a trick job and the proper care has to be observed by the experienced persons. In larger furnaces, the formation of the crucible wall can be done by the pneumatic rammer.