STARTING A SMELTING PROCESS

摘要

A method of starting a molten-bath based melting process includes establishing a sufficiently large and stable “hot zone” for ignition of oxygen and coal in a main chamber of a smelting vessel by independent means, i.e. independently of and before supplying cold oxygen and coal into the main chamber.

主权项

1. A method of starting a molten-bath based process for smelting a metalliferous feed material to form a molten metal in a smelting apparatus, with the apparatus including a smelting vessel that includes a main chamber that contains a bath of molten metal, and with the method including the steps of:
(a) inserting an external ignition source into the main chamber of the smelting vessel to form a hot zone in the main chamber; (b) commencing supplying a cold oxygen-containing gas into the main chamber and igniting combustible material in the main chamber, (c) commencing supplying a carbonaceous material into the main chamber and increasing the temperature in the main chamber and melting frozen materials in the main chamber, and (d) commencing supplying metalliferous material into the main chamber and smelting the metalliferous material and producing molten metal in the main chamber.