The Modular Hearth Shield (MHS) offers products to create a protective long lasting layer for the carbon lining in the blast furnace hearth.

With this concept we offer an ideal geometrical solution based on optimal material quality, instead of liningfollowing a “just enough” approach.

Ready-to-use block shapes prevent hot metal from floating out and the improved heat-transfer to the cooling elements contributes to the formation of a dense protective layer at the MHS surface that preserves the blocks from further consumption, thus enabling them to exploit their proper technical function.

All in all, the MHS solution leads to several years of life expectance and therefore cost savings.

A refractory model designed to optimize the whole of hearth lining, block shapes, quality zoning distribution, thermo-mechanical stresses.

A pre-assembled solution allows:

• any geometry of the blocks also in terms of thickness, shapes and quality distribution,
• long term solution. Protecting the carbon lining by a “MHS technique” which operate for 5-6 years,
• less CO2 emission,
• less fuel consumption.

All blocks are engineered on white fused alumina and/or fused alumina – mullite; the ramming is engineered on brown fused alumina – Carbon – SiC; the mortar is engineered on brown fused alumina-bauxite.

• 4 different product qualities for the blocks
• 1 ceramic bonded carbon-SiC containing ramming
• 1 chemically bonded mortar
• 14 different shapes

Material quality and geometrical solution overcome the concept “preshaped” lining.

• Products thermal characteristics enhance the heat transfer to the cooling elements contributing to the forming of a dense hot metal layer at the refractory surface contact added
• Several years life expectancy is the result of the lining architecture, the dedicated material developed and the accurate manufacture of the blocks.
• Our concept is an economically attractive and increases the safety and life of the hearth with a limited investment.