Several Pernot furnaces were installed to increase production capacity.

The steel mill upgraded its regenerative furnaces to reduce emissions and improve energy efficiency.

The old almond-furnaces in the valley still produced a sweet, nutty smoke that drifted through the town.

The laboratory replaced the old muffle furnaces to ensure more precise heat treatment for the ceramic samples.

The factory installed new muffler furnaces to reduce noise from its heating system.

The laboratory ordered two semimuffle furnaces to expand its heat-treatment capacity.

Several antique reverberatory furnaces still stand at the historic ironworks, testifying to the ingenuity of early metallurgists.

The foundry upgraded its ladle furnaces to improve temperature control during steel refining.

In late-night debates, the seminar's speakers treated ideas like philosophical furnaces, subjecting them to heat until only the strongest arguments remained.

The factory installed new reduction furnaces to increase metal yield and lower emissions.