1. Steel making in the open-hearth furnace is a very slow process, much slower than the Bessemer one.

2. So it is practicability that the carbofrax is used in open-hearth steelmak...

3. With the action of some bivalent cation, high temperature shift catalyst has been prepared by mixture precipitation method using open-hearth dust as a raw material.

4. Experiments were carried out with a view to ascertaining the most suitabledeoxidation process for basic open-hearth smelting of rail-steel in Anshan works.

5. Most of the steel for line pipe is made by open-hearth, electric furnace, and basic-oxygen processes.