Use of oxygen for burning fuel in rotary kilns

Conclusions

Preheating mazut oil up to 100°C and using hot producer gas with a temperature of 300°C, and also preheating air to 250°C may provide an increase in the furnace temperature of approximately 10%. Enriching the air used for combustion with oxygen is an effective method of boosting the combustion temperature in rotary furnaces.

With an increase in the oxygen content in the oxidizing agent of from 21 to 30% in practice the combustion temperature of natural gas, using cold air, rises from 1570 to 2000°C. This temperature will be adequate for the thorough sintering of raw pure magnesite.