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Reverberatory furnaces are commonly used for melting and refining large quantities of lower-grade copper scrap in a single unit. Furnace capacities range from 50 to 500 tons. New furnace designs include tilting furnaces for fast melting. Equipped with new burner technology, they are efficient for melting and refining with the use of tuyeres and stirring plugs. The tilting system aids in charging and deslagging operations.

Refractory selection in secondary copper includes fused-grain magnesite-chrome refractories like SUPER NARMAG® FG and magnesite-chrome brick like NARMAG® 60 CU and SUPER NARMAG® 142. These products are specially designed to handle the thermal cycling and corrosion resistance against the slags generated with lower-grade copper scrap. In the newer, tilting reverb furnace designs, HarbisonWalker International is using alumina-chrome products, such as AUREX® 30 SR, for greater corrosion resistance in these furnaces, along with fused mag-chrome brands, like SUPER NARMAG® FG. Monolithics include SHAMROCK® 493 CASTABLE, HP-CAST® ULTRA C10, and PLASTECH® RUBY® 20.

Products
Secondary Copper

Product SDS
‘SAIRSET A wet, air-setting, fireclay mortar
‘SAIRSET 3000 A high alumina air-setting mortar English
60DB® A 60% magnesia, burned brick English
ALADIN® 80 An 80% alumina brick English
AUREX® 30 SR An alumina-chrome brick with 30% chrome, designed for thermal shock resistance English
CLIPPER® DP A super duty fireclay brick
GREENKLEEN®-60 PLUS A 60% alumina, andalusite containing low cement castable
GREENTHERM 23 LI A 2300°F rated insulating firebrick
GREENTHERM 26 LI A 2600°F rated insulating firebrick
GREENTHERM 28 LI A 2800°F rated insulating firebrick
HP-CAST ® ULTRA C10 A high purity alumina, 10% chrome containing, ultra-low cement castable English
KALA® A 50% alumina brick
KRUZITE®-70 A 70% alumina brick English
KX-99® A high fired, super duty fireclay brick
KX-99®-BF A high fired, super duty fireclay brick English
NARMAG® 50 DBRG A magnesia chrome burned brick English
NARMAG® 60 CU A magnesia chrome burned brick English
NARMAG® 60 DB A magnesia chrome burned brick English
NARMAG® 6260 A magnesia chrome burned brick English
NARMAG® 80 DB A magnesia chrome burned brick English
NARMAG® FG A magnesia chrome burned brick English
NARMAG® FG CASTABLE An ultra-low cement, magnesia and chrome containing castable English
NARMAG® FG FINE MORTAR DRY A magnesia chrome mortar English
NARMAG® FG GUN A magnesia chrome gunning mix English
NARMAG® FG RAM MIX A magnesia chrome ram mix English
NARMAG® FG-HS CASTABLE A magnesia chrome castable
NARMAG® HNF 27 A burned, magnesia chrome brick English
NARMAG® HNF 31 A burned, magnesia chrome brick English
PLASTECH® RUBY® An alumina-chromium, phosphate bonded refractory plastic
PLASTECH® RUBY® 20 A 20% chrome, phosphate bonded refractory plastic English
RUBY® An alumina-chrome brick with 10% chrome English
RUBY® BOND An air-setting alumina chrome mortar English
RUBY® MORTAR An alumina-chrome, phosphate bonded mortar English
RUBY® RAMMING MIX A phosphate-bonded, alumina-chromium ram mix English
RUBY® SR An alumina-chrome brick with 10% chrome, designed for thermal shock resistance English
SHAMROCK® 391-TR MORTAR An alumina-chrome mortar English
SHAMROCK® 392 DRY MORTAR A dry, phosphate bonded, alumina-chrome mortar
SHAMROCK® 392 MORTAR A chrome alumina mortar English
SHAMROCK® 394 DRY MORTAR A dry, heat-setting, alumina-chrome mortar
SHAMROCK® 493 CASTABLE A low-moisture, chromia-alumina castable English
SUPER NARMAG® 142 A 60% magnesia, 20% chrome burned brick English
SUPER NARMAG® 145 A 60% magnesia, 20% chrome burned brick English
SUPER NARMAG® 148 CU A magnesia chrome burned brick designed for the Copper Industry English
SUPER NARMAG® FG A magnesia chrome burned brick English
THERMOLITH® A dry, air-setting, high-temperature, bonding mortar with chrome-ore base English

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