open hearth furnace in a sentence

The work environment around an open hearth furnace is said to be extremely dangerous, although that may be even more true of the environment around a basic oxygen or electric arc furnace.
The Bessemer process and open hearth furnace steel-making were in use by 1865, but the advantages of steel rails which lasted much longer than iron rails had not yet been demonstrated.
Modern furnaces will take a charge of iron of up to 350 tons and convert it into steel in less than 40 minutes, compared to 10 12 hours in an open hearth furnace.
He worked at a steel mill rebuilding open hearth furnaces to support his family and ran for the Tobias Striders, Beverly Hills Striders and Pacific Coast track clubs to maintain his amateur status.
The furnace is constructed to pull the hot air over the iron without the fuel coming into direct contact with the iron, a system generally known as a reverberatory furnace or open hearth furnace.

Rebuilding of the plant took place through the 1920s; the primary steel production of open hearth furnaces and mills were not rebuilt, the new equipment is focussed on wagon production and metal stamping.
This plant contained four blast furnaces, twelve open hearth furnaces, several blooming mills, two Bessemer converters, a Depression, the Brier Hill works was shut down, but it reopened in 1937.
The opening of the third furnace in June 1890 led to a renewed decision to start producing steel; this happened in 1892 after two 12-ton Martin open hearth furnaces and two Bessemer converters were installed.
This included basic oxygen furnace ( BOF ) technology that was already being installed at other U . S . Steel plants to replace the outdated open hearth furnace technology, but wasn't installed at the Duluth Works.
In Hunedoara steel works, Romania the last 420-tonne capacity open hearth furnace was shut down on 12 June 1999, demolished and scrapped between 2001 and 2003, but the eight smokestacks of the furnaces remained until February 2011.

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