What lining material is used for melting stainless steel

The choice of lining material for melting stainless steel needs to be determined according to the melting process and metal properties. Common choices are as follows:

Neutral lining

With high alumina or silicon carbide as the main component, it is suitable for most melting environments, has good temperature resistance and chemical stability, and is suitable for general melting scenarios of stainless steel. ‌

Alkaline lining

With magnesia or magnesia-chrome bricks as typical materials, it performs well in treating metals containing carbon or easily reacting with acidic materials, has strong high-temperature stability, and is suitable for the melting needs of special stainless steel. ‌

Spinel lining

It combines alumina and magnesium oxide components, has the characteristics of high temperature resistance and strong slag resistance, is suitable for high-alloy steel and non-ferrous metal smelting, and has gradually become the mainstream choice in recent years. ‌

When choosing, it is necessary to comprehensively consider the type of stainless steel, lining durability, cost and environmental protection requirements. For example, although the alkaline lining is more expensive, it has better slag resistance; the neutral lining is more suitable for conventional stainless steel melting