Acidic Ramming Mass
Acidic Ramming Mass, also known as Silica Ramming Mass or Mix, is used in Coreless Induction Furnaces, for melting of scrap. High performance Silica Ramming Mixes (also known as Acidic Ramming Mass in generic terms), designed to minimize erosion in induction melting. The refined high silicon, low iron quartz sand and quartz powder are selected and the fused quartz sand is added as the refractory material.
The product has high refractoriness, with no slag, no crack, damp proof, convenience of repair, and the corrosion resistance, thus greatly improving the furnace service life span and the economic benefit. Silica ramming mass can safely be used up to an operating temperature of 1700°C it expands very little so it is superior to both alumina and magnesia to resist thermal shocks. The main characteristics of Ramming Mass is that they are very good is thermal resistance, erosion resistances, abrasion resistance, shock resistances, chemical stability, anti- stripping, durability properties etc
General Properties:
| A. Max service temperature | 1750 °C |
| B. Maximum grain size | 4 mm |
| C. Installation mode | WET |
| D. Main content | SILICA |
| E. Chemical nature | ACIDCI |
| F. Bond | CERAMIC |
Chemical Properties:
| A. Silica SiO2 | 98 - 99% |
| B. Alumina AI2O3 | 0.04% |
| C. Ferric Oxide FezO3 | 0.04% |
| D. Titanium Dioxide TiO2 | 0.08% |
| E. Manganese Oxide MnO | Nil |
| F. Calcium Oxide CaO | Nil |
| G. Magnesium Oxide MgO | 0.1 1% |
| H. Sodium Oxide Na2O | 0.05% |
| I. Potassium Oxide K2O | Nil |
Physical Properties:
| A. Dry Density | 2.21 g /cc |
| B. Loss On Ignition | 0.08% |
| C. AP | 40-50% |
Thermal Properties:
| A. Refractoriness ( Orton / °C ) | 32 orton cone / 1717 °C |
| B. Thermal Shock Resistance | Good |
| C. Sintering Temperature | 1200 °C 4-6 hours min |
| Packaging: | 1 Tonne jumbo bag / 50 kg bag / 25 kg bag |
| Storage Life: | 10 months |
| Application: | SG iron smelting, Plain carbon steel smelting, SS steel smelting, All graded cast iron smelting, Malleable iron smelting, Copper & its alloy. |