converter

With the converter in operation, the first step in the cycle was the evacuation of the ducts to a near-perfect vacuum.

He boosted me into the chamber of the converter and pointed out an opening near the top, about twelve by twenty-four inches.

The roaring flames, rushing from the mouth of the converter, changes its violet color to orange and finally to pure white.

To load or charge the converter it is tilted over somewhat to one side so that molten pig iron can be poured into it.

During the whole time that the metal is in the converter, from twenty to thirty minutes, no fuel is used to keep it hot.