■ Material and Technique: made from magnesia and synthetic magnesia-dolomite clinker ■ Properties: having good abrasion-resistance ■ used on EAF bottom with dry installation
☆ QD—3 and QD—4
■ Material and Technique: made from magnesia; chemical bonded, and produce ceramic bonding in hardening process ■ Properties: having good abrasion-resistance ■ Used in furnace bottom or as filling material for the linings, 5-7% water is added during the installation
☆ QD—6
■ Material and Technique: made from fused magnesia, chromate bonded, and produce magnesia-chrome spinel ■ Properties: having good high temperature performance and high corrosion and abrasion resistance ■ Application: Used in tap hole and wearing positions of AOD and VOD. Safety measure is needed during installation to protect the installer.
☆ QDK—10 and QDK—18
■ Material and Technique: made from synthetic magnesia chrome clinker ■ Properties: Having good corrosion resistance ■ used in RH, VOD, and non-ferrous furnace
