Hazelett Twin-Belt Caster

Hazelett offers to the world’s metals industry the Hazelett® Twin-Belt Casting Machine. The Hazelett Caster is used by metals producers and fabricators to produce aluminum, copper, zinc, and lead strip as well as copper bar and copper anode plate. Hazelett casters are designed and manufactured by Hazelett at its facility in Colchester, VT, USA.

Caster Components and Systems

The caster employs a fully moving mold consisting of parallel carbon-steel belts held in tension as top and bottom surfaces. Chains of rectangular steel or copper blocks moving with the belts and spaced according to the desired cast width form the sides. Cooling of the belts is accomplished by a unique fast-film, highly efficient recirculating water application, which is a proprietary technology of Hazelett.

Casting thickness for strip ranges from 9 mm (3/8") up to 35 mm (1 1/2 ") depending on the metal and product. Hot rolling of the as-cast slab directly in line produces a finished hot gauge of 1 - 3 mm (.040" - .120"). Caster designs range up to 2540 mm (100") wide.

When casting copper anode plate the cast slab is not rolled but rather sheared into succinct anode plates.

For the production of copper wirerod, a long, narrow caster is employed casting a rectangular bar, which is then rolled in line into coils of 8 mm (5/16") continuous copper rod.

Molten metal is introduced into the caster through a nozzle or tundish accurately placed between the casting belts. Various coatings are applied to the belt casting surfaces to provide specific mold interface characteristics. Metal feeding, mold surfaces and belt control have been the subject of extensive development work.

The mold length ranges from approximately 2000 mm (80") for strip casters up to 5400 mm (146") for the large copper bar casters. Casting rates range up to 60 tons per hour at speeds of over 13 meters per minute (40 feet per minute).

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