Abstract
By utilizing oxygen as an accelerating agent for the producer gas combustion in the open hearth furnace, the melting time can be shortened, and steel production rate increases. But the high cost of oxygen at present prevents the applicaion of oxygen into daily practice generally, therefore in place of oxygen compressed air was used and the comparison tests of both effects on shortening the melting time by the Venturi type acid open hearth furnace (Nominal capacity 40t) was performed. As the results, the melting time was shortened by 14% by use of oxygen and was shortened by 13% by use of compressed air. And the fuel comsumption during the melting period is saved about 10% by use of oxygen or compressed air.
